Here's the first cut at the Template things Matt Porter mentioned
originally and I've been talking about too.
The basic idea is that yes, you should not ask about $(large number) of
things to tweak the kernel to some specific application but by that same
token you shouldn't have to change the code directly (as when the next
update happens, it will conflict and maybe you'll miss the new place
that value is used, etc).
So what this does is try and provide a happy medium. If something is
tweakable, say so when you write the code, provide a default and let
people tune it if they need to. And while we're at it, lets make it
easy to change any number of these for a specific use and let the user
pick a new profile.
The following is vs current 2.5 BK and has been lightly tested on PPC
(and compiled on i386). This creates the default files for all current
arches, and adapts ARM and ia64 as well to show how to override a
generic param with an arch-specific one (and removes
CONFIG_FORCE_MAX_ZONEORDER).
It also doesn't currently modify every arch/$(ARCH)/Kconfig right now.
I fully except that there would be additional arch-specific profiles
added, so I don't think this should be asked in a more common file like
lib/Kconfig or something.
I don't yet do CFLAG changes as that will require a bit more work
(CONFIG_xxx works now since we can directly include .config. For
TWEAK_XXX to work some sed'ing will be required to generate a new file
for scripts/Makefile.build to include), and there's no doubt many other
things which can / could be tweaked.
Comments?
--
Tom Rini (TR1265)
http://gate.crashing.org/~trini/
===== arch/arm/Kconfig 1.3 vs edited =====
--- 1.3/arch/arm/Kconfig Sat Nov 2 11:35:13 2002
+++ edited/arch/arm/Kconfig Thu Nov 7 09:42:32 2002
@@ -220,11 +220,6 @@
depends on ASSABET_NEPONSET || SA1100_ADSBITSY || SA1100_BADGE4 || SA1100_CONSUS || SA1100_GRAPHICSMASTER || SA1100_JORNADA720 || ARCH_LUBBOCK || SA1100_PFS168 || SA1100_PT_SYSTEM3 || SA1100_XP860
default y
-config FORCE_MAX_ZONEORDER
- int
- depends on ASSABET_NEPONSET || SA1100_ADSBITSY || SA1100_BADGE4 || SA1100_CONSUS || SA1100_GRAPHICSMASTER || SA1100_JORNADA720 || ARCH_LUBBOCK || SA1100_PFS168 || SA1100_PT_SYSTEM3 || SA1100_XP860
- default "9"
-
comment "Processor Type"
# Figure out whether this system uses 26-bit or 32-bit CPUs.
===== arch/i386/Kconfig 1.5 vs edited =====
--- 1.5/arch/i386/Kconfig Mon Nov 4 12:24:42 2002
+++ edited/arch/i386/Kconfig Thu Nov 7 09:42:32 2002
@@ -720,6 +720,38 @@
low memory. Setting this option will put user-space page table
entries in high memory.
+config TWEAK_PROFILES
+ bool "Pick a different set of defaults"
+ default n
+ help
+ In the kernel, it is possible to easily change a number of
+ parameters in the kernel. Normally, defaults are picked which
+ are the best for most machines. There are times where one would
+ want to change these values. If you select this option, you can
+ then pick a new set of defaults, and then further tweak that.
+
+ For more details see <file:Documentation/tweak.txt>
+
+ If in doubt, say N.
+
+choice
+ prompt "Type of kernel"
+ default TINY
+ depends on TWEAK_PROFILES
+ help
+ It is possible to choose different sets of default values for
+ different parts of the kernel, and to change these to better
+ fit specific situations.
+
+config TINY
+ bool "Tiny"
+ help
+ This option will select values for all parts of the kernel
+ which allow parts of the subsystem to be tweaked which will
+ result in a smaller kernel image.
+
+endchoice
+
config MATH_EMULATION
bool "Math emulation"
---help---
===== arch/ia64/Kconfig 1.3 vs edited =====
--- 1.3/arch/ia64/Kconfig Sat Nov 2 11:35:28 2002
+++ edited/arch/ia64/Kconfig Thu Nov 7 09:42:32 2002
@@ -333,10 +333,6 @@
don't understand what this means or are not a kernel hacker, just
leave it at its default value ELF.
-config FORCE_MAX_ZONEORDER
- int
- default "18"
-
config HUGETLB_PAGE
bool "IA-64 Huge TLB Page Support"
===== arch/ppc/Kconfig 1.7 vs edited =====
--- 1.7/arch/ppc/Kconfig Thu Nov 7 09:32:09 2002
+++ edited/arch/ppc/Kconfig Thu Nov 7 09:42:33 2002
@@ -656,6 +656,38 @@
If in doubt, say N here.
+config TWEAK_PROFILES
+ bool "Pick a different set of defaults"
+ default n
+ help
+ In the kernel, it is possible to easily change a number of
+ parameters in the kernel. Normally, defaults are picked which
+ are the best for most machines. There are times where one would
+ want to change these values. If you select this option, you can
+ then pick a new set of defaults, and then further tweak that.
+
+ For more details see <file:Documentation/tweak.txt>
+
+ If in doubt, say N.
+
+choice
+ prompt "Type of kernel"
+ default TINY
+ depends on TWEAK_PROFILES
+ help
+ It is possible to choose different sets of default values for
+ different parts of the kernel, and to change these to better
+ fit specific situations.
+
+config TINY
+ bool "Tiny"
+ help
+ This option will select values for all parts of the kernel
+ which allow parts of the subsystem to be tweaked which will
+ result in a smaller kernel image.
+
+endchoice
+
config MATH_EMULATION
bool "Math emulation"
depends on 4xx || 8xx
===== include/linux/mmzone.h 1.31 vs edited =====
--- 1.31/include/linux/mmzone.h Thu Oct 31 15:48:19 2002
+++ edited/include/linux/mmzone.h Thu Nov 7 09:42:33 2002
@@ -10,6 +10,7 @@
#include <linux/wait.h>
#include <linux/cache.h>
#include <linux/threads.h>
+#include <asm/tweaks.h>
#include <asm/atomic.h>
#ifdef CONFIG_DISCONTIGMEM
#include <asm/numnodes.h>
@@ -19,11 +20,7 @@
#endif
/* Free memory management - zoned buddy allocator. */
-#ifndef CONFIG_FORCE_MAX_ZONEORDER
-#define MAX_ORDER 11
-#else
-#define MAX_ORDER CONFIG_FORCE_MAX_ZONEORDER
-#endif
+#define MAX_ORDER TWEAK_MAX_ORDER
struct free_area {
struct list_head free_list;
===== include/net/af_unix.h 1.2 vs edited =====
--- 1.2/include/net/af_unix.h Mon Feb 11 00:06:52 2002
+++ edited/include/net/af_unix.h Thu Nov 7 09:42:33 2002
@@ -1,12 +1,15 @@
#ifndef __LINUX_NET_AFUNIX_H
#define __LINUX_NET_AFUNIX_H
+
+#include <asm/tweaks.h>
+
extern void unix_proto_init(struct net_proto *pro);
extern void unix_inflight(struct file *fp);
extern void unix_notinflight(struct file *fp);
typedef struct sock unix_socket;
extern void unix_gc(void);
-#define UNIX_HASH_SIZE 256
+#define UNIX_HASH_SIZE TWEAK_UNIX_HASH_SIZE
extern unix_socket *unix_socket_table[UNIX_HASH_SIZE+1];
extern rwlock_t unix_table_lock;
===== include/net/udp.h 1.7 vs edited =====
--- 1.7/include/net/udp.h Sun Oct 20 09:15:38 2002
+++ edited/include/net/udp.h Thu Nov 7 09:42:33 2002
@@ -25,8 +25,9 @@
#include <linux/udp.h>
#include <linux/ip.h>
#include <net/sock.h>
+#include <asm/tweaks.h>
-#define UDP_HTABLE_SIZE 128
+#define UDP_HTABLE_SIZE TWEAK_UDP_HTABLE_SIZE
/* udp.c: This needs to be shared by v4 and v6 because the lookup
* and hashing code needs to work with different AF's yet
===== init/main.c 1.77 vs edited =====
--- 1.77/init/main.c Tue Nov 5 08:34:37 2002
+++ edited/init/main.c Thu Nov 7 09:42:33 2002
@@ -34,6 +34,7 @@
#include <linux/profile.h>
#include <linux/rcupdate.h>
+#include <asm/tweaks.h>
#include <asm/io.h>
#include <asm/bugs.h>
@@ -431,7 +432,7 @@
proc_caches_init();
security_scaffolding_startup();
buffer_init();
- vfs_caches_init(num_physpages);
+ vfs_caches_init(TWEAK_VFS_CACHE_AVAILMEM);
radix_tree_init();
signals_init();
populate_rootfs();
===== net/ipv4/route.c 1.29 vs edited =====
--- 1.29/net/ipv4/route.c Tue Nov 5 14:56:09 2002
+++ edited/net/ipv4/route.c Thu Nov 7 09:42:33 2002
@@ -94,6 +94,7 @@
#include <net/arp.h>
#include <net/tcp.h>
#include <net/icmp.h>
+#include <asm/tweaks.h>
#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
#endif
@@ -2499,7 +2500,7 @@
if (!ipv4_dst_ops.kmem_cachep)
panic("IP: failed to allocate ip_dst_cache\n");
- goal = num_physpages >> (26 - PAGE_SHIFT);
+ goal = num_physpages >> ((26 + TWEAK_IPV4_NETHASH_MOD) - PAGE_SHIFT);
for (order = 0; (1UL << order) < goal; order++)
/* NOTHING */;
===== net/ipv4/tcp.c 1.31 vs edited =====
--- 1.31/net/ipv4/tcp.c Fri Nov 1 05:15:17 2002
+++ edited/net/ipv4/tcp.c Thu Nov 7 09:42:33 2002
@@ -260,6 +260,7 @@
#include <asm/uaccess.h>
#include <asm/ioctls.h>
+#include <asm/tweaks.h>
int sysctl_tcp_fin_timeout = TCP_FIN_TIMEOUT;
@@ -2611,9 +2612,11 @@
* The methodology is similar to that of the buffer cache.
*/
if (num_physpages >= (128 * 1024))
- goal = num_physpages >> (21 - PAGE_SHIFT);
+ goal = num_physpages >> ((21 + TWEAK_IPV4_NETHASH_MOD)
+ - PAGE_SHIFT);
else
- goal = num_physpages >> (23 - PAGE_SHIFT);
+ goal = num_physpages >> ((23 + TWEAK_IPV4_NETHASH_MOD)
+ - PAGE_SHIFT);
for (order = 0; (1UL << order) < goal; order++)
;
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-alpha/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-alpha/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-alpha/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-alpha/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-arm/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-arm/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,18 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-arm/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-arm/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,39 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+
+/* This is the number of free areas per zone to manage, but the max
+ * number determines the maximum order of a page allocation request
+ * as well. */
+/* Default: 11 */
+#if defined(ASSABET_NEPONSET0) || defined(SA1100_ADSBITSY) || \
+ defined(SA1100_BADGE4) || defined(SA1100_CONSUS) || \
+ defined(SA1100_GRAPHICSMASTER) || defined(SA1100_JORNADA720) || \
+ defined(ARCH_LUBBOCK) || defined(SA1100_PFS168) || \
+ defined(SA1100_PT_SYSTEM3) || defined(SA1100_XP860)
+#undef TWEAK_MAX_ORDER
+#define TWEAK_MAX_ORDER 9
+#endif
+
+#include <asm/custom_tweaks.h>
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-cris/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-cris/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-cris/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-cris/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-generic/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-generic/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,31 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This files provides 'tweaked' values for various parts of the kernel
+ * which represent the default values for that particular section of code.
+ *
+ * < minimal GPL v2 notice here >
+ */
+
+/* The size the each of the VFS hash tables. */
+/* Default: num_physpages */
+#define TWEAK_VFS_CACHE_AVAILMEM num_physpages
+
+/* The size of the UNIX socket hash table. */
+/* Default: 256 */
+#define TWEAK_UNIX_HASH_SIZE 256
+
+/* The size of the UDP socket hash table. */
+/* Default: 128 */
+#define TWEAK_UDP_HTABLE_SIZE 128
+
+/* Various parts of the IPv4 code allocate hash tables of a various sizes.
+ * We do not want to tweak their size in any way. */
+/* Default: 0 */
+#define TWEAK_IPV4_NETHASH_MOD 0
+
+/* This is the number of free areas per zone to manage, but the max
+ * number determines the maximum order of a page allocation request
+ * as well. */
+/* Default: 11 */
+#define TWEAK_MAX_ORDER 11
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-generic/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,30 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This files provides 'tweaked' values for various parts of the kernel
+ * which represent values which would produce a smaller kernel image.
+ *
+ * < minimal GPL v2 notice here >
+ */
+
+/* The size the each of the VFS hash tables. */
+/* Default: num_physpages */
+#undef TWEAK_VFS_CACHE_AVAILMEM
+#define TWEAK_VFS_CACHE_AVAILMEM 1
+
+/* The size of the UNIX socket hash table. */
+/* Default: 256 */
+#undef TWEAK_UNIX_HASH_SIZE
+#define TWEAK_UNIX_HASH_SIZE 16
+
+/* The size of the UDP socket hash table. */
+/* Default: 128 */
+#undef TWEAK_UDP_HTABLE_SIZE
+#define TWEAK_UDP_HTABLE_SIZE 8
+
+/* Various parts of the IPv4 code allocate hash tables of a various sizes.
+ * This value is always used with a shift, and we want to reduce the size
+ * by 16. */
+/* Default: 0 */
+#undef TWEAK_IPV4_NETHASH_MOD
+#define TWEAK_IPV4_NETHASH_MOD 4
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-i386/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-i386/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-i386/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-i386/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-ia64/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-ia64/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,18 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-ia64/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-ia64/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,33 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+
+/* This is the number of free areas per zone to manage, but the max
+ * number determines the maximum order of a page allocation request
+ * as well. */
+/* Default: 11 */
+#undef TWEAK_MAX_ORDER
+#define TWEAK_MAX_ORDER 18
+
+#include <asm/custom_tweaks.h>
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-m68k/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-m68k/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-m68k/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-m68k/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-m68knommu/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-m68knommu/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-m68knommu/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-m68knommu/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-mips/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-mips/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-mips/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-mips/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-mips64/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-mips64/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-mips64/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-mips64/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-parisc/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-parisc/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-parisc/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-parisc/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-ppc/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-ppc/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-ppc/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-ppc/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-ppc64/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-ppc64/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-ppc64/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-ppc64/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-s390/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-s390/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-s390/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-s390/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-s390x/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-s390x/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-s390x/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-s390x/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-sh/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-sh/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-sh/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-sh/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-sparc/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-sparc/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-sparc/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-sparc/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-sparc64/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-sparc64/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-sparc64/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-sparc64/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-um/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-um/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-um/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-um/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-v850/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-v850/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-v850/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-v850/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-x86_64/custom_tweaks.h 2002-11-07 09:44:49.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * This file is the included last in <asm/tweaks.h> and contains the
+ * authorative value for any TWEAK value. If you wish to change any
+ * TWEAK value, do so here.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_CUSTOM_TWEAKS_H__
+#define __ASM_CUSTOM_TWEAKS_H__
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-x86_64/default_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,17 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the default values for the various parts of
+ * the kernel which can be tweaked at compile time.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_DEFAULT_TWEAKS_H__
+#define __ASM_DEFAULT_TWEAKS_H__
+
+/* Get the generic defines. */
+#include <asm-generic/default_tweaks.h>
+
+/* Now define arch-specific defaults. */
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-x86_64/tiny_tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,19 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * This file represents the values for the various parts of
+ * the kernel which can be tweaked at compile time which result
+ * in a smaller kernel image.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TINY_TWEAKS_H__
+#define __ASM_TINY_TWEAKS_H__
+
+/* Get the default values. */
+#include <asm-generic/tiny_tweaks.h>
+
+/* Now, redefine things as needed. */
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/include/asm-x86_64/tweaks.h 2002-11-07 09:42:33.000000000 -0700
@@ -0,0 +1,26 @@
+/*
+ * Tom Rini <[email protected]>
+ *
+ * Inside the kernel, there are numerous values which can be tweaked
+ * at compile time to get a kernel which is smaller, performs better,
+ * or otherwise fits into a specific problem better. Depending on what
+ * the user selects, we get a different set of values, which can be further
+ * tweaked as the user sees fit.
+ *
+ * < minimal GPL v2 notice goes here >
+ */
+
+#ifndef __ASM_TWEAKS_H__
+#define __ASM_TWEAKS_H__
+
+/* By default, we pick the defines in the default_tweaks.h file. We also
+ * always include custom_tweaks.h. We conditionally pick other files as
+ * well to better make the kernel fit the situation.
+ */
+#include <asm/default_tweaks.h>
+#if defined(CONFIG_TINY)
+#include <asm/tiny_tweaks.h>
+#endif
+#include <asm/custom_tweaks.h>
+
+#endif
--- /dev/null 1969-12-31 17:00:00.000000000 -0700
+++ linuxppc-2.5/Documentation/tweak.txt 2002-11-07 08:26:18.000000000 -0700
@@ -0,0 +1,43 @@
+How to tweak the kernel, using the TWEAK infrastructure.
+ Tom Rini <[email protected]>
+
+This document is divided into two sections. The first section is for
+how users can use the TWEAK infrastructure to make the kernel better fit
+their custom application. The second section is aimed at coders to
+suggest how to make use of this when writing new code, or reviewing
+existing code.
+
+ The TWEAK system was designed to be easy to use, and hopefully it is.
+There are two types of tweakable parameters, generic ones and arch-specific
+ones. Everything which can be tweaked, and is in common code is initially
+defined in include/asm-generic/default_tweaks.h. There is currently another
+file, include/asm-generic/tiny_tweaks.h which re-defines values found in
+include/asm-generic/tiny_tweaks.h so that a smaller kernel image is produced.
+ It is possible that specific archs will provide additional,
+arch-specific configurations. Which brings us to the arch specific portion.
+Every arch has an include/asm-$(ARCH)/tweaks.h, which includes
+<asm/default_tweaks.h>, possibly other arch-specific tweak headers, and
+<asm/custom_tweaks.h>. This file is also where arches can re-tweak
+common tweaks if needed. For example, ARM and ia64 will redefine
+TWEAK_MAX_ORDER as they, on a platform or arch-specific basis need a different
+value.
+ The <asm/custom_tweaks.h> file is very important, as this is where
+the per-user tweaking happens. This file is always included at the end of
+<asm/tweaks.h>, so regardless of what is in any other of the tweak headers
+included, any value can still be overridden by the user.
+
+ The TWEAK system should also be easy to use for the coders as well.
+If some subsystem is using a constant somewhere, ask yourself if you could
+see any reason that someone might have to want to change it. If you can think
+of one, and this is common code, add something akin to the following to
+include/asm-generic/default_tweaks.h:
+/* In the foo subsystem, we use BAR to do baz. */
+/* Default: 16 */
+#define TWEAK_BAR 16
+/* Or even TWEAK_FOO_BAR, whichever makes sense */
+And that's it. If you know that it could impact size, or one of the other
+existing set of generic templates, you can also change those templates:
+in include/asm-generic/tiny_tweaks.h:
+/* In the foo subsystem, we use BAR to do baz. */
+/* Default: 16 */
+#define TWEAK_BAR 4
Tom Rini wrote:
>
> Comments?
You missed this little fella:
text data bss dec hex filename
1735 1120 131104 133959 20b47 kernel/pid.o
Have a controversial patch which takes it to:
text data bss dec hex filename
1614 1120 2080 4814 12ce kernel/pid.o
include/linux/pid.h | 1 +
kernel/pid.c | 24 +++++++++++++-----------
2 files changed, 14 insertions(+), 11 deletions(-)
--- 25/kernel/pid.c~unbloat-pid Sun Oct 27 23:43:15 2002
+++ 25-akpm/kernel/pid.c Sun Oct 27 23:43:15 2002
@@ -22,11 +22,13 @@
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/init.h>
+#include <linux/hash.h>
#include <linux/bootmem.h>
-#define PIDHASH_SIZE 4096
-#define pid_hashfn(nr) ((nr >> 8) ^ nr) & (PIDHASH_SIZE - 1)
-static struct list_head pid_hash[PIDTYPE_MAX][PIDHASH_SIZE];
+#define PIDHASH_SHIFT 8
+#define PIDHASH_SIZE (1 << PIDHASH_SHIFT)
+#define pid_hashfn(nr, type) hash_long(nr * PIDTYPE_MAX + type, PIDHASH_SHIFT)
+static struct list_head pid_hash[PIDHASH_SIZE];
int pid_max = PID_MAX_DEFAULT;
int last_pid;
@@ -146,12 +148,12 @@ failure:
inline struct pid *find_pid(enum pid_type type, int nr)
{
- struct list_head *elem, *bucket = &pid_hash[type][pid_hashfn(nr)];
+ struct list_head *elem, *bucket = &pid_hash[pid_hashfn(nr, type)];
struct pid *pid;
__list_for_each(elem, bucket) {
pid = list_entry(elem, struct pid, hash_chain);
- if (pid->nr == nr)
+ if (pid->nr == nr && pid->type == type)
return pid;
}
return NULL;
@@ -173,11 +175,12 @@ int attach_pid(task_t *task, enum pid_ty
else {
pid = &task->pids[type].pid;
pid->nr = nr;
+ pid->type = type;
atomic_set(&pid->count, 1);
INIT_LIST_HEAD(&pid->task_list);
pid->task = task;
get_task_struct(task);
- list_add(&pid->hash_chain, &pid_hash[type][pid_hashfn(nr)]);
+ list_add(&pid->hash_chain, &pid_hash[pid_hashfn(nr, type)]);
}
list_add_tail(&task->pids[type].pid_chain, &pid->task_list);
task->pids[type].pidptr = pid;
@@ -260,7 +263,7 @@ void switch_exec_pids(task_t *leader, ta
void __init pidhash_init(void)
{
- int i, j;
+ int i;
/*
* Allocate PID 0, and hash it via all PID types:
@@ -269,9 +272,8 @@ void __init pidhash_init(void)
set_bit(0, pidmap_array->page);
atomic_dec(&pidmap_array->nr_free);
- for (i = 0; i < PIDTYPE_MAX; i++) {
- for (j = 0; j < PIDHASH_SIZE; j++)
- INIT_LIST_HEAD(&pid_hash[i][j]);
+ for (i = 0; i < ARRAY_SIZE(pid_hash); i++)
+ INIT_LIST_HEAD(&pid_hash[i]);
+ for (i = 0; i < PIDTYPE_MAX; i++)
attach_pid(current, i, 0);
- }
}
--- 25/include/linux/pid.h~unbloat-pid Sun Oct 27 23:43:15 2002
+++ 25-akpm/include/linux/pid.h Sun Oct 27 23:43:15 2002
@@ -13,6 +13,7 @@ enum pid_type
struct pid
{
int nr;
+ enum pid_type type;
atomic_t count;
struct task_struct *task;
struct list_head task_list;
.
On Thu, Nov 07, 2002 at 11:27:25AM -0800, Andrew Morton wrote:
> Tom Rini wrote:
> >
> > Comments?
>
> You missed this little fella:
>
> text data bss dec hex filename
> 1735 1120 131104 133959 20b47 kernel/pid.o
>
>
> Have a controversial patch which takes it to:
>
> text data bss dec hex filename
> 1614 1120 2080 4814 12ce kernel/pid.o
My patch isn't about size per-se, it's about tweaking the kernel and
making it easier to do things like get a small kernel. Or work on boxes
with large amounts of memory and not use HIGHMEM, or otherwise have
tweakable params with N different config options.
--
Tom Rini (TR1265)
http://gate.crashing.org/~trini/
Tom Rini wrote:
>
> On Thu, Nov 07, 2002 at 11:27:25AM -0800, Andrew Morton wrote:
> > Tom Rini wrote:
> > >
> > > Comments?
> >
> > You missed this little fella:
> >
> > text data bss dec hex filename
> > 1735 1120 131104 133959 20b47 kernel/pid.o
> >
> >
> > Have a controversial patch which takes it to:
> >
> > text data bss dec hex filename
> > 1614 1120 2080 4814 12ce kernel/pid.o
>
> My patch isn't about size per-se, it's about tweaking the kernel and
> making it easier to do things like get a small kernel. Or work on boxes
> with large amounts of memory and not use HIGHMEM, or otherwise have
> tweakable params with N different config options.
>
Yes. Replace PIDHASH_SHIFT (in that patch) with TWEAK_PIDHASH_SHIFT.
It must be a power of two.
Those tables are currently 128k even on the teeniest little
uniprocessor build.
On Thu, Nov 07, 2002 at 11:44:56AM -0800, Andrew Morton wrote:
> Tom Rini wrote:
> >
> > On Thu, Nov 07, 2002 at 11:27:25AM -0800, Andrew Morton wrote:
> > > Tom Rini wrote:
> > > >
> > > > Comments?
> > >
> > > You missed this little fella:
> > >
> > > text data bss dec hex filename
> > > 1735 1120 131104 133959 20b47 kernel/pid.o
> > >
> > >
> > > Have a controversial patch which takes it to:
> > >
> > > text data bss dec hex filename
> > > 1614 1120 2080 4814 12ce kernel/pid.o
> >
> > My patch isn't about size per-se, it's about tweaking the kernel and
> > making it easier to do things like get a small kernel. Or work on boxes
> > with large amounts of memory and not use HIGHMEM, or otherwise have
> > tweakable params with N different config options.
> >
>
> Yes. Replace PIDHASH_SHIFT (in that patch) with TWEAK_PIDHASH_SHIFT.
> It must be a power of two.
>
> Those tables are currently 128k even on the teeniest little
> uniprocessor build.
Ah, I see now. In the next version I'll add that as an additional
patch. Any comments on the idea itself or how I implemented it or
anything?
--
Tom Rini (TR1265)
http://gate.crashing.org/~trini/
On Thu, Nov 07, 2002 at 12:09:10PM -0700, Tom Rini wrote:
> The following is vs current 2.5 BK and has been lightly tested on PPC
> (and compiled on i386). This creates the default files for all current
> arches, and adapts ARM and ia64 as well to show how to override a
> generic param with an arch-specific one (and removes
> CONFIG_FORCE_MAX_ZONEORDER).
This isn't a "tweak" on ARM as in a user-adjustable value. It needs to
specifically be reduced to prevent things from blowing up.
So, when SA1111-type machines are selected, the max zone order _must_
(no ifs or buts) be set to 9 or below.
> +/* This is the number of free areas per zone to manage, but the max
> + * number determines the maximum order of a page allocation request
> + * as well. */
> +/* Default: 11 */
> +#if defined(ASSABET_NEPONSET0) || defined(SA1100_ADSBITSY) || \
> + defined(SA1100_BADGE4) || defined(SA1100_CONSUS) || \
> + defined(SA1100_GRAPHICSMASTER) || defined(SA1100_JORNADA720) || \
> + defined(ARCH_LUBBOCK) || defined(SA1100_PFS168) || \
> + defined(SA1100_PT_SYSTEM3) || defined(SA1100_XP860)
> +#undef TWEAK_MAX_ORDER
> +#define TWEAK_MAX_ORDER 9
> +#endif
And the reason we have it in the configuration rather than the code is
to get rid of crap like the above.
--
Russell King ([email protected]) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html
Oh, there's another problem built into this method as well.
Instead of one "tweak" depending on one configuration option, it suddenly
depends on a whole load of configuration options. You change one of these
options, and you rebuild everything that uses the asm/tweaks.h (or whatever
the filename was.)
IMHO this is a backward step. ;(
--
Russell King ([email protected]) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html
On Thu, Nov 07, 2002 at 09:03:04PM +0000, Russell King wrote:
> On Thu, Nov 07, 2002 at 12:09:10PM -0700, Tom Rini wrote:
> > The following is vs current 2.5 BK and has been lightly tested on PPC
> > (and compiled on i386). This creates the default files for all current
> > arches, and adapts ARM and ia64 as well to show how to override a
> > generic param with an arch-specific one (and removes
> > CONFIG_FORCE_MAX_ZONEORDER).
>
> This isn't a "tweak" on ARM as in a user-adjustable value. It needs to
> specifically be reduced to prevent things from blowing up.
It is however, a "tweak" of the default value of 11. I'll add a comment
about this for the next version. And if it can be less than 9, it is
user-adjustable, it just has to be adjusted between 1 and 9.
> > +/* This is the number of free areas per zone to manage, but the max
> > + * number determines the maximum order of a page allocation request
> > + * as well. */
> > +/* Default: 11 */
> > +#if defined(ASSABET_NEPONSET0) || defined(SA1100_ADSBITSY) || \
> > + defined(SA1100_BADGE4) || defined(SA1100_CONSUS) || \
> > + defined(SA1100_GRAPHICSMASTER) || defined(SA1100_JORNADA720) || \
> > + defined(ARCH_LUBBOCK) || defined(SA1100_PFS168) || \
> > + defined(SA1100_PT_SYSTEM3) || defined(SA1100_XP860)
> > +#undef TWEAK_MAX_ORDER
> > +#define TWEAK_MAX_ORDER 9
> > +#endif
>
> And the reason we have it in the configuration rather than the code is
> to get rid of crap like the above.
But having that as one line in arch/arm/Kconfig looks any better?
--
Tom Rini (TR1265)
http://gate.crashing.org/~trini/
On Thu, Nov 07, 2002 at 09:08:08PM +0000, Russell King wrote:
> Oh, there's another problem built into this method as well.
>
> Instead of one "tweak" depending on one configuration option, it suddenly
> depends on a whole load of configuration options. You change one of these
> options, and you rebuild everything that uses the asm/tweaks.h (or whatever
> the filename was.)
>
> IMHO this is a backward step. ;(
That is annoying. But I'm not quite sure how this doesn't happen for
<linux/config.h>. Is it just the <linux/config.h> -> <linux/autoconf.h>
which is what is actually changed? Or is there more magic to it?
--
Tom Rini (TR1265)
http://gate.crashing.org/~trini/
On Thu, Nov 07, 2002 at 03:10:17PM -0700, Tom Rini wrote:
> On Thu, Nov 07, 2002 at 09:08:08PM +0000, Russell King wrote:
> > Oh, there's another problem built into this method as well.
> >
> > Instead of one "tweak" depending on one configuration option, it suddenly
> > depends on a whole load of configuration options. You change one of these
> > options, and you rebuild everything that uses the asm/tweaks.h (or whatever
> > the filename was.)
> >
> > IMHO this is a backward step. ;(
>
> That is annoying. But I'm not quite sure how this doesn't happen for
> <linux/config.h>. Is it just the <linux/config.h> -> <linux/autoconf.h>
> which is what is actually changed? Or is there more magic to it?
I've found fixdep and split-include (Thanks Kai!) and I'm going to try
and figure out a clean way to do this.
--
Tom Rini (TR1265)
http://gate.crashing.org/~trini/
On Thu, Nov 07, 2002 at 03:06:29PM -0700, Tom Rini wrote:
> But having that as one line in arch/arm/Kconfig looks any better?
Actually its supposed to depend on CONFIG_SA1111, not that random
collection of other symbols. The following just happened to be a nice
way to specify it under CML1:
if [ "$CONFIG_ASSABET_NEPONSET" = "y" -o \
"$CONFIG_SA1100_ACCELENT" = "y" -o \
"$CONFIG_SA1100_ADSBITSY" = "y" -o \
"$CONFIG_SA1100_BADGE4" = "y" -o \
"$CONFIG_SA1100_CONSUS" = "y" -o \
"$CONFIG_SA1100_GRAPHICSMASTER" = "y" -o \
"$CONFIG_SA1100_JORNADA720" = "y" -o \
"$CONFIG_SA1100_PFS168" = "y" -o \
"$CONFIG_SA1100_PT_SYSTEM3" = "y" -o \
"$CONFIG_SA1100_XP860" = "y" ]; then
define_bool CONFIG_SA1111 y
define_int CONFIG_FORCE_MAX_ZONEORDER 9
fi
The conversion should've been:
config FORCE_MAX_ZONEORDER
int
depends on SA1111
default "9"
Even so, my original point remains about the dependency between config
symbols concentrating in one "tweaks" header file leading to the situation
where you change one symbol and everything rebuilds.
--
Russell King ([email protected]) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html
On Fri, Nov 08, 2002 at 12:29:05AM +0000, Russell King wrote:
> On Thu, Nov 07, 2002 at 03:06:29PM -0700, Tom Rini wrote:
> > But having that as one line in arch/arm/Kconfig looks any better?
>
> Actually its supposed to depend on CONFIG_SA1111, not that random
> collection of other symbols. The following just happened to be a nice
> way to specify it under CML1:
>
> if [ "$CONFIG_ASSABET_NEPONSET" = "y" -o \
> "$CONFIG_SA1100_ACCELENT" = "y" -o \
> "$CONFIG_SA1100_ADSBITSY" = "y" -o \
> "$CONFIG_SA1100_BADGE4" = "y" -o \
> "$CONFIG_SA1100_CONSUS" = "y" -o \
> "$CONFIG_SA1100_GRAPHICSMASTER" = "y" -o \
> "$CONFIG_SA1100_JORNADA720" = "y" -o \
> "$CONFIG_SA1100_PFS168" = "y" -o \
> "$CONFIG_SA1100_PT_SYSTEM3" = "y" -o \
> "$CONFIG_SA1100_XP860" = "y" ]; then
> define_bool CONFIG_SA1111 y
> define_int CONFIG_FORCE_MAX_ZONEORDER 9
> fi
>
> The conversion should've been:
>
> config FORCE_MAX_ZONEORDER
> int
> depends on SA1111
> default "9"
Ah. I should have guessed :) I've seen a few similar ones on PPC.
I'll update the patch.
> Even so, my original point remains about the dependency between config
> symbols concentrating in one "tweaks" header file leading to the situation
> where you change one symbol and everything rebuilds.
Yes, this is an annoyance. I'm trying to figure out how to adapt
split-include to work with the tweak headers, and I don't think it will
be too painful. It'll just require something in the middle to take
<asm/tweaks.h> and spit out something akin to <linux/autoconf.h>.
So aside from that, any other comments about the idea or implementation?
--
Tom Rini (TR1265)
http://gate.crashing.org/~trini/