On Fri, Mar 04, 2005 at 08:51:53PM +0100, Rafael J. Wysocki wrote:
> From: Hu Gang <[email protected]>
>
> Subject: swsusp: use non-contiguous memory on resume - ppc support
>
> This patch contains the architecture-dependent changes for ppc
> required for using a linklist instead of an array of page backup entries
> during resume.
>
> Signed-off-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Hu Gang <[email protected]>
...
--
Hu Gang .-.
/v\
// \\
Linux User /( )\ [204016]
GPG Key ID ^^-^^ http://soulinfo.com/~hugang/hugang.asc
On Monday, 7 of March 2005 07:41, [email protected] wrote:
> On Fri, Mar 04, 2005 at 08:51:53PM +0100, Rafael J. Wysocki wrote:
> > From: Hu Gang <[email protected]>
> >
> > Subject: swsusp: use non-contiguous memory on resume - ppc support
> >
> > This patch contains the architecture-dependent changes for ppc
> > required for using a linklist instead of an array of page backup entries
> > during resume.
> >
> > Signed-off-by: Rafael J. Wysocki <[email protected]>
> Signed-off-by: Hu Gang <[email protected]>
Yes, the Signed-off-by line was missing from the original patch. Andrew,
should I resubmit it?
Rafael
--
- Would you tell me, please, which way I ought to go from here?
- That depends a good deal on where you want to get to.
-- Lewis Carroll "Alice's Adventures in Wonderland"
"Rafael J. Wysocki" <[email protected]> wrote:
>
> On Monday, 7 of March 2005 07:41, [email protected] wrote:
> > On Fri, Mar 04, 2005 at 08:51:53PM +0100, Rafael J. Wysocki wrote:
> > > From: Hu Gang <[email protected]>
> > >
> > > Subject: swsusp: use non-contiguous memory on resume - ppc support
> > >
> > > This patch contains the architecture-dependent changes for ppc
> > > required for using a linklist instead of an array of page backup entries
> > > during resume.
> > >
> > > Signed-off-by: Rafael J. Wysocki <[email protected]>
> > Signed-off-by: Hu Gang <[email protected]>
>
> Yes, the Signed-off-by line was missing from the original patch. Andrew,
> should I resubmit it?
>
I dropped lots of those swsusp patches due to various bit of breakage.
Pavel will be redoing all of them sometime, hopefully.
On Monday, 7 of March 2005 12:39, Andrew Morton wrote:
> "Rafael J. Wysocki" <[email protected]> wrote:
> >
> > On Monday, 7 of March 2005 07:41, [email protected] wrote:
> > > On Fri, Mar 04, 2005 at 08:51:53PM +0100, Rafael J. Wysocki wrote:
> > > > From: Hu Gang <[email protected]>
> > > >
> > > > Subject: swsusp: use non-contiguous memory on resume - ppc support
> > > >
> > > > This patch contains the architecture-dependent changes for ppc
> > > > required for using a linklist instead of an array of page backup entries
> > > > during resume.
> > > >
> > > > Signed-off-by: Rafael J. Wysocki <[email protected]>
> > > Signed-off-by: Hu Gang <[email protected]>
> >
> > Yes, the Signed-off-by line was missing from the original patch. Andrew,
> > should I resubmit it?
> >
>
> I dropped lots of those swsusp patches due to various bit of breakage.
> Pavel will be redoing all of them sometime, hopefully.
These patches are a "redone version" of the patch that Pavel submitted
before and Pavel has acked them already.
I did my best not to break them, but if they are broken, could you please tell
me what's wrong with them so that I can fix it?
Rafael
--
- Would you tell me, please, which way I ought to go from here?
- That depends a good deal on where you want to get to.
-- Lewis Carroll "Alice's Adventures in Wonderland"
On Po 07-03-05 13:13:07, Rafael J. Wysocki wrote:
> On Monday, 7 of March 2005 12:39, Andrew Morton wrote:
> > "Rafael J. Wysocki" <[email protected]> wrote:
> > >
> > > Yes, the Signed-off-by line was missing from the original patch. Andrew,
> > > should I resubmit it?
> > >
> >
> > I dropped lots of those swsusp patches due to various bit of breakage.
> > Pavel will be redoing all of them sometime, hopefully.
>
> These patches are a "redone version" of the patch that Pavel submitted
> before and Pavel has acked them already.
>
> I did my best not to break them, but if they are broken, could you please tell
> me what's wrong with them so that I can fix it?
Just bad timing, I guess. I sent wrong patches, and andrew reacted by
simply waiting for me to catch up with right tree (which is okay, it
was big and not critical).
Now, akpm sent all (?) swsusp updates to Linus, so it should appear in
bk tree later today. If you could regenerate the patches (1/3 will no
longer be needed) and send them to me & l-k. I'll then forward them to
akpm. [He seems to prefer patches to come from my email address :-)]
Pavel
--
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
Hi,
On Tuesday, 8 of March 2005 11:38, Pavel Machek wrote:
> On Po 07-03-05 13:13:07, Rafael J. Wysocki wrote:
> > On Monday, 7 of March 2005 12:39, Andrew Morton wrote:
> > > "Rafael J. Wysocki" <[email protected]> wrote:
> > > >
> > > > Yes, the Signed-off-by line was missing from the original patch. Andrew,
> > > > should I resubmit it?
> > > >
> > >
> > > I dropped lots of those swsusp patches due to various bit of breakage.
> > > Pavel will be redoing all of them sometime, hopefully.
> >
> > These patches are a "redone version" of the patch that Pavel submitted
> > before and Pavel has acked them already.
> >
> > I did my best not to break them, but if they are broken, could you please tell
> > me what's wrong with them so that I can fix it?
>
> Just bad timing, I guess. I sent wrong patches, and andrew reacted by
> simply waiting for me to catch up with right tree (which is okay, it
> was big and not critical).
>
> Now, akpm sent all (?) swsusp updates to Linus, so it should appear in
> bk tree later today. If you could regenerate the patches (1/3 will no
> longer be needed) and send them to me & l-k. I'll then forward them to
> akpm. [He seems to prefer patches to come from my email address :-)]
OK
Here's the 2/3 one (ie the main resume part). Do you need the summary?
Rafael
Signed-off-by: Rafael J. Wysocki <[email protected]>
diff -Nru linux-2.6.11-a/arch/i386/kernel/asm-offsets.c linux-2.6.11-b/arch/i386/kernel/asm-offsets.c
--- linux-2.6.11-a/arch/i386/kernel/asm-offsets.c 2005-03-02 08:38:00.000000000 +0100
+++ linux-2.6.11-b/arch/i386/kernel/asm-offsets.c 2005-03-04 20:14:01.000000000 +0100
@@ -7,6 +7,7 @@
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/personality.h>
+#include <linux/suspend.h>
#include <asm/ucontext.h>
#include "sigframe.h"
#include <asm/fixmap.h>
@@ -56,6 +57,11 @@
OFFSET(EXEC_DOMAIN_handler, exec_domain, handler);
OFFSET(RT_SIGFRAME_sigcontext, rt_sigframe, uc.uc_mcontext);
+ BLANK();
+
+ OFFSET(pbe_address, pbe, address);
+ OFFSET(pbe_orig_address, pbe, orig_address);
+ OFFSET(pbe_next, pbe, next);
/* Offset from the sysenter stack to tss.esp0 */
DEFINE(TSS_sysenter_esp0, offsetof(struct tss_struct, esp0) -
diff -Nru linux-2.6.11-a/arch/i386/power/swsusp.S linux-2.6.11-b/arch/i386/power/swsusp.S
--- linux-2.6.11-a/arch/i386/power/swsusp.S 2005-03-02 08:38:37.000000000 +0100
+++ linux-2.6.11-b/arch/i386/power/swsusp.S 2005-03-04 20:14:01.000000000 +0100
@@ -12,6 +12,7 @@
#include <linux/linkage.h>
#include <asm/segment.h>
#include <asm/page.h>
+#include <asm/asm_offsets.h>
.text
@@ -28,28 +29,28 @@
ret
ENTRY(swsusp_arch_resume)
- movl $swsusp_pg_dir-__PAGE_OFFSET,%ecx
- movl %ecx,%cr3
+ movl $swsusp_pg_dir-__PAGE_OFFSET, %ecx
+ movl %ecx, %cr3
- movl pagedir_nosave, %ebx
- xorl %eax, %eax
- xorl %edx, %edx
+ movl pagedir_nosave, %edx
.p2align 4,,7
copy_loop:
- movl 4(%ebx,%edx),%edi
- movl (%ebx,%edx),%esi
+ testl %edx, %edx
+ jz done
+
+ movl pbe_address(%edx), %esi
+ movl pbe_orig_address(%edx), %edi
movl $1024, %ecx
rep
movsl
- incl %eax
- addl $16, %edx
- cmpl nr_copy_pages,%eax
- jb copy_loop
+ movl pbe_next(%edx), %edx
+ jmp copy_loop
.p2align 4,,7
+done:
movl saved_context_esp, %esp
movl saved_context_ebp, %ebp
movl saved_context_ebx, %ebx
diff -Nru linux-2.6.11-a/arch/x86_64/kernel/asm-offsets.c linux-2.6.11-b/arch/x86_64/kernel/asm-offsets.c
--- linux-2.6.11-a/arch/x86_64/kernel/asm-offsets.c 2005-03-02 08:38:10.000000000 +0100
+++ linux-2.6.11-b/arch/x86_64/kernel/asm-offsets.c 2005-03-04 20:14:01.000000000 +0100
@@ -62,8 +62,8 @@
offsetof (struct rt_sigframe32, uc.uc_mcontext));
BLANK();
#endif
- DEFINE(SIZEOF_PBE, sizeof(struct pbe));
DEFINE(pbe_address, offsetof(struct pbe, address));
DEFINE(pbe_orig_address, offsetof(struct pbe, orig_address));
+ DEFINE(pbe_next, offsetof(struct pbe, next));
return 0;
}
diff -Nru linux-2.6.11-a/arch/x86_64/kernel/suspend_asm.S linux-2.6.11-b/arch/x86_64/kernel/suspend_asm.S
--- linux-2.6.11-a/arch/x86_64/kernel/suspend_asm.S 2005-03-02 08:38:26.000000000 +0100
+++ linux-2.6.11-b/arch/x86_64/kernel/suspend_asm.S 2005-03-04 20:14:01.000000000 +0100
@@ -54,16 +54,10 @@
movq %rax, %cr4; # turn PGE back on
movq pagedir_nosave(%rip), %rdx
- /* compute the limit */
- movl nr_copy_pages(%rip), %eax
- testl %eax, %eax
- jz done
- movq %rdx,%r8
- movl $SIZEOF_PBE,%r9d
- mul %r9 # with rax, clobbers rdx
- movq %r8, %rdx
- addq %r8, %rax
loop:
+ testq %rdx, %rdx
+ jz done
+
/* get addresses from the pbe and copy the page */
movq pbe_address(%rdx), %rsi
movq pbe_orig_address(%rdx), %rdi
@@ -72,9 +66,8 @@
movsq
/* progress to the next pbe */
- addq $SIZEOF_PBE, %rdx
- cmpq %rax, %rdx
- jb loop
+ movq pbe_next(%rdx), %rdx
+ jmp loop
done:
movl $24, %eax
movl %eax, %ds
diff -Nru linux-2.6.11-a/kernel/power/swsusp.c linux-2.6.11-b/kernel/power/swsusp.c
--- linux-2.6.11-a/kernel/power/swsusp.c 2005-03-04 20:05:49.000000000 +0100
+++ linux-2.6.11-b/kernel/power/swsusp.c 2005-03-04 20:14:01.000000000 +0100
@@ -621,6 +621,46 @@
}
/**
+ * fill_pb_page - Create a list of PBEs on a given memory page
+ */
+
+static inline void fill_pb_page(struct pbe *pbpage)
+{
+ struct pbe *p;
+
+ p = pbpage;
+ pbpage += PB_PAGE_SKIP;
+ do
+ p->next = p + 1;
+ while (++p < pbpage);
+}
+
+/**
+ * create_pbe_list - Create a list of PBEs on top of a given chain
+ * of memory pages allocated with alloc_pagedir()
+ */
+
+static void create_pbe_list(struct pbe *pblist, unsigned nr_pages)
+{
+ struct pbe *pbpage, *p;
+ unsigned num = PBES_PER_PAGE;
+
+ for_each_pb_page (pbpage, pblist) {
+ if (num >= nr_pages)
+ break;
+
+ fill_pb_page(pbpage);
+ num += PBES_PER_PAGE;
+ }
+ if (pbpage) {
+ for (num -= PBES_PER_PAGE - 1, p = pbpage; num < nr_pages; p++, num++)
+ p->next = p + 1;
+ p->next = NULL;
+ }
+ pr_debug("create_pbe_list(): initialized %d PBEs\n", num);
+}
+
+/**
* alloc_pagedir - Allocate the page directory.
*
* First, determine exactly how many pages we need and
@@ -636,7 +676,7 @@
static struct pbe * alloc_pagedir(unsigned nr_pages)
{
unsigned num;
- struct pbe *pblist, *pbe, *p;
+ struct pbe *pblist, *pbe;
if (!nr_pages)
return NULL;
@@ -645,21 +685,13 @@
pblist = (struct pbe *)get_zeroed_page(GFP_ATOMIC | __GFP_COLD);
for (pbe = pblist, num = PBES_PER_PAGE; pbe && num < nr_pages;
pbe = pbe->next, num += PBES_PER_PAGE) {
- p = pbe;
pbe += PB_PAGE_SKIP;
- do
- p->next = p + 1;
- while (p++ < pbe);
pbe->next = (struct pbe *)get_zeroed_page(GFP_ATOMIC | __GFP_COLD);
}
- if (pbe) {
- for (num -= PBES_PER_PAGE - 1, p = pbe; num < nr_pages; p++, num++)
- p->next = p + 1;
- } else { /* get_zeroed_page() failed */
+ if (!pbe) { /* get_zeroed_page() failed */
free_pagedir(pblist);
pblist = NULL;
}
- pr_debug("alloc_pagedir(): allocated %d PBEs\n", num);
return pblist;
}
@@ -766,6 +798,7 @@
printk(KERN_ERR "suspend: Allocating pagedir failed.\n");
return -ENOMEM;
}
+ create_pbe_list(pagedir_save, nr_copy_pages);
pagedir_nosave = pagedir_save;
if ((error = alloc_image_pages())) {
printk(KERN_ERR "suspend: Allocating image pages failed.\n");
@@ -917,44 +950,104 @@
return 0;
}
-/*
- * We check here that pagedir & pages it points to won't collide with pages
- * where we're going to restore from the loaded pages later
+/**
+ * On resume, for storing the PBE list and the image,
+ * we can only use memory pages that do not conflict with the pages
+ * which had been used before suspend.
+ *
+ * We don't know which pages are usable until we allocate them.
+ *
+ * Allocated but unusable (ie eaten) memory pages are linked together
+ * to create a list, so that we can free them easily
+ *
+ * We could have used a type other than (void *)
+ * for this purpose, but ...
*/
-static int __init check_pagedir(void)
+static void **eaten_memory = NULL;
+
+static inline void eat_page(void *page)
{
- int i;
+ void **c;
- for(i=0; i < nr_copy_pages; i++) {
- unsigned long addr;
+ c = eaten_memory;
+ eaten_memory = page;
+ *eaten_memory = c;
+}
- do {
- addr = get_zeroed_page(GFP_ATOMIC);
- if(!addr)
- return -ENOMEM;
- } while (does_collide_order(addr, 0));
+static unsigned long __init get_usable_page(unsigned gfp_mask)
+{
+ unsigned long m;
- (pagedir_nosave+i)->address = addr;
+ m = get_zeroed_page(gfp_mask);
+ while (does_collide_order(m, 0)) {
+ eat_page((void *)m);
+ m = get_zeroed_page(gfp_mask);
+ if (!m)
+ break;
}
- return 0;
+ return m;
}
-static int __init swsusp_pagedir_relocate(void)
+static void __init free_eaten_memory(void)
{
- /*
- * We have to avoid recursion (not to overflow kernel stack),
- * and that's why code looks pretty cryptic
+ unsigned long m;
+ void **c;
+ int i = 0;
+
+ c = eaten_memory;
+ while (c) {
+ m = (unsigned long)c;
+ c = *c;
+ free_page(m);
+ i++;
+ }
+ eaten_memory = NULL;
+ pr_debug("swsusp: %d unused pages freed\n", i);
+}
+
+/**
+ * check_pagedir - We ensure here that pages that the PBEs point to
+ * won't collide with pages where we're going to restore from the loaded
+ * pages later
+ */
+
+static int __init check_pagedir(struct pbe *pblist)
+{
+ struct pbe *p;
+
+ /* This is necessary, so that we can free allocated pages
+ * in case of failure
*/
- suspend_pagedir_t *old_pagedir = pagedir_nosave;
- void **eaten_memory = NULL;
- void **c = eaten_memory, *m, *f;
- int ret = 0;
+ for_each_pbe (p, pblist)
+ p->address = 0UL;
+
+ for_each_pbe (p, pblist) {
+ p->address = get_usable_page(GFP_ATOMIC);
+ if (!p->address)
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+/**
+ * swsusp_pagedir_relocate - It is possible, that some memory pages
+ * occupied by the list of PBEs collide with pages where we're going to
+ * restore from the loaded pages later. We relocate them here.
+ */
+
+static struct pbe * __init swsusp_pagedir_relocate(struct pbe *pblist)
+{
struct zone *zone;
- int i;
- struct pbe *p;
unsigned long zone_pfn;
+ struct pbe *pbpage, *tail, *p;
+ void *m;
+ int rel = 0, error = 0;
+
+ if (!pblist) /* a sanity check */
+ return NULL;
- printk("Relocating pagedir ");
+ pr_debug("swsusp: Relocating pagedir (%lu pages to check)\n",
+ swsusp_info.pagedir_pages);
/* Set page flags */
@@ -964,45 +1057,52 @@
zone->zone_start_pfn));
}
- /* Clear orig address */
+ /* Clear orig addresses */
- for(i = 0, p = pagedir_nosave; i < nr_copy_pages; i++, p++) {
+ for_each_pbe (p, pblist)
ClearPageNosaveFree(virt_to_page(p->orig_address));
- }
- if (!does_collide_order((unsigned long)old_pagedir, pagedir_order)) {
- printk("not necessary\n");
- return check_pagedir();
- }
+ tail = pblist + PB_PAGE_SKIP;
- while ((m = (void *) __get_free_pages(GFP_ATOMIC, pagedir_order)) != NULL) {
- if (!does_collide_order((unsigned long)m, pagedir_order))
- break;
- eaten_memory = m;
- printk( "." );
- *eaten_memory = c;
- c = eaten_memory;
- }
+ /* Relocate colliding pages */
- if (!m) {
- printk("out of memory\n");
- ret = -ENOMEM;
- } else {
- pagedir_nosave =
- memcpy(m, old_pagedir, PAGE_SIZE << pagedir_order);
+ for_each_pb_page (pbpage, pblist) {
+ if (does_collide_order((unsigned long)pbpage, 0)) {
+ m = (void *)get_usable_page(GFP_ATOMIC | __GFP_COLD);
+ if (!m) {
+ error = -ENOMEM;
+ break;
+ }
+ memcpy(m, (void *)pbpage, PAGE_SIZE);
+ if (pbpage == pblist)
+ pblist = (struct pbe *)m;
+ else
+ tail->next = (struct pbe *)m;
+
+ eat_page((void *)pbpage);
+ pbpage = (struct pbe *)m;
+
+ /* We have to link the PBEs again */
+
+ for (p = pbpage; p < pbpage + PB_PAGE_SKIP; p++)
+ if (p->next) /* needed to save the end */
+ p->next = p + 1;
+
+ rel++;
+ }
+ tail = pbpage + PB_PAGE_SKIP;
}
- c = eaten_memory;
- while (c) {
- printk(":");
- f = c;
- c = *c;
- free_pages((unsigned long)f, pagedir_order);
+ if (error) {
+ printk("\nswsusp: Out of memory\n\n");
+ free_pagedir(pblist);
+ free_eaten_memory();
+ pblist = NULL;
}
- if (ret)
- return ret;
- printk("|\n");
- return check_pagedir();
+ else
+ printk("swsusp: Relocated %d pages\n", rel);
+
+ return pblist;
}
/**
@@ -1147,76 +1247,117 @@
}
/**
- * swsusp_read_data - Read image pages from swap.
+ * data_read - Read image pages from swap.
*
* You do not need to check for overlaps, check_pagedir()
* already did that.
*/
-static int __init data_read(void)
+static int __init data_read(struct pbe *pblist)
{
struct pbe * p;
- int error;
- int i;
- int mod = nr_copy_pages / 100;
+ int error = 0;
+ int i = 0;
+ int mod = swsusp_info.image_pages / 100;
if (!mod)
mod = 1;
- if ((error = swsusp_pagedir_relocate()))
- return error;
+ printk("swsusp: Reading image data (%lu pages): ",
+ swsusp_info.image_pages);
+
+ for_each_pbe (p, pblist) {
+ if (!(i % mod))
+ printk("\b\b\b\b%3d%%", i / mod);
- printk( "Reading image data (%d pages): ", nr_copy_pages );
- for(i = 0, p = pagedir_nosave; i < nr_copy_pages && !error; i++, p++) {
- if (!(i%mod))
- printk( "\b\b\b\b%3d%%", i / mod );
error = bio_read_page(swp_offset(p->swap_address),
(void *)p->address);
+ if (error)
+ return error;
+
+ i++;
}
- printk(" %d done.\n",i);
+ printk("\b\b\b\bdone\n");
return error;
-
}
extern dev_t __init name_to_dev_t(const char *line);
-static int __init read_pagedir(void)
+/**
+ * read_pagedir - Read page backup list pages from swap
+ */
+
+static int __init read_pagedir(struct pbe *pblist)
{
- unsigned long addr;
- int i, n = swsusp_info.pagedir_pages;
- int error = 0;
+ struct pbe *pbpage, *p;
+ unsigned i = 0;
+ int error;
- addr = __get_free_pages(GFP_ATOMIC, pagedir_order);
- if (!addr)
- return -ENOMEM;
- pagedir_nosave = (struct pbe *)addr;
+ if (!pblist)
+ return -EFAULT;
+
+ printk("swsusp: Reading pagedir (%lu pages)\n",
+ swsusp_info.pagedir_pages);
- pr_debug("swsusp: Reading pagedir (%d Pages)\n",n);
+ for_each_pb_page (pbpage, pblist) {
+ unsigned long offset = swp_offset(swsusp_info.pagedir[i++]);
- for (i = 0; i < n && !error; i++, addr += PAGE_SIZE) {
- unsigned long offset = swp_offset(swsusp_info.pagedir[i]);
- if (offset)
- error = bio_read_page(offset, (void *)addr);
- else
- error = -EFAULT;
+ error = -EFAULT;
+ if (offset) {
+ p = (pbpage + PB_PAGE_SKIP)->next;
+ error = bio_read_page(offset, (void *)pbpage);
+ (pbpage + PB_PAGE_SKIP)->next = p;
+ }
+ if (error)
+ break;
}
+
if (error)
- free_pages((unsigned long)pagedir_nosave, pagedir_order);
+ free_page((unsigned long)pblist);
+
+ BUG_ON(i != swsusp_info.pagedir_pages);
+
return error;
}
+
static int __init read_suspend_image(void)
{
int error = 0;
+ struct pbe *p;
if ((error = check_sig()))
return error;
+
if ((error = check_header()))
return error;
- if ((error = read_pagedir()))
+
+ if (!(p = alloc_pagedir(nr_copy_pages)))
+ return -ENOMEM;
+
+ if ((error = read_pagedir(p)))
return error;
- if ((error = data_read()))
- free_pages((unsigned long)pagedir_nosave, pagedir_order);
+
+ create_pbe_list(p, nr_copy_pages);
+
+ if (!(pagedir_nosave = swsusp_pagedir_relocate(p)))
+ return -ENOMEM;
+
+ /* Allocate memory for the image and read the data from swap */
+
+ error = check_pagedir(pagedir_nosave);
+ free_eaten_memory();
+ if (!error)
+ error = data_read(pagedir_nosave);
+
+ if (error) { /* We fail cleanly */
+ for_each_pbe (p, pagedir_nosave)
+ if (p->address) {
+ free_page(p->address);
+ p->address = 0UL;
+ }
+ free_pagedir(pagedir_nosave);
+ }
return error;
}
--
- Would you tell me, please, which way I ought to go from here?
- That depends a good deal on where you want to get to.
-- Lewis Carroll "Alice's Adventures in Wonderland"
Hi,
On Tuesday, 8 of March 2005 12:47, Rafael J. Wysocki wrote:
> Hi,
>
[-- snip --]
> > Just bad timing, I guess. I sent wrong patches, and andrew reacted by
> > simply waiting for me to catch up with right tree (which is okay, it
> > was big and not critical).
> >
> > Now, akpm sent all (?) swsusp updates to Linus, so it should appear in
> > bk tree later today. If you could regenerate the patches (1/3 will no
> > longer be needed) and send them to me & l-k. I'll then forward them to
> > akpm. [He seems to prefer patches to come from my email address :-)]
>
> OK
>
> Here's the 2/3 one (ie the main resume part). Do you need the summary?
Here's the 3/3 one (ie the ppc support from hugang).
The patches are against 2.6.11 + 1/3 (ie suspend part), but they should
apply cleanly to the -bk w/ the suspend part as well.
Rafael
Signed-off-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Hu Gang <[email protected]>
diff -Nru linux-2.6.11-a/arch/ppc/Kconfig linux-2.6.11-b/arch/ppc/Kconfig
--- linux-2.6.11-a/arch/ppc/Kconfig 2005-03-02 08:38:33.000000000 +0100
+++ linux-2.6.11-b/arch/ppc/Kconfig 2005-03-04 18:42:16.000000000 +0100
@@ -1046,6 +1046,8 @@
source "drivers/zorro/Kconfig"
+source kernel/power/Kconfig
+
endmenu
menu "Bus options"
diff -Nru linux-2.6.11-a/arch/ppc/kernel/asm-offsets.c linux-2.6.11-b/arch/ppc/kernel/asm-offsets.c
--- linux-2.6.11-a/arch/ppc/kernel/asm-offsets.c 2005-03-02 08:38:09.000000000 +0100
+++ linux-2.6.11-b/arch/ppc/kernel/asm-offsets.c 2005-03-04 18:42:16.000000000 +0100
@@ -16,6 +16,7 @@
#include <linux/string.h>
#include <linux/types.h>
#include <linux/ptrace.h>
+#include <linux/suspend.h>
#include <linux/mman.h>
#include <linux/mm.h>
#include <asm/io.h>
@@ -136,6 +137,10 @@
DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
+ DEFINE(pbe_address, offsetof(struct pbe, address));
+ DEFINE(pbe_orig_address, offsetof(struct pbe, orig_address));
+ DEFINE(pbe_next, offsetof(struct pbe, next));
+
DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28);
return 0;
}
diff -Nru linux-2.6.11-a/arch/ppc/kernel/Makefile linux-2.6.11-b/arch/ppc/kernel/Makefile
--- linux-2.6.11-a/arch/ppc/kernel/Makefile 2005-03-02 08:38:25.000000000 +0100
+++ linux-2.6.11-b/arch/ppc/kernel/Makefile 2005-03-04 18:42:16.000000000 +0100
@@ -16,6 +16,7 @@
semaphore.o syscalls.o setup.o \
cputable.o ppc_htab.o perfmon.o
obj-$(CONFIG_6xx) += l2cr.o cpu_setup_6xx.o
+obj-$(CONFIG_SOFTWARE_SUSPEND) += swsusp.o
obj-$(CONFIG_POWER4) += cpu_setup_power4.o
obj-$(CONFIG_MODULES) += module.o ppc_ksyms.o
obj-$(CONFIG_NOT_COHERENT_CACHE) += dma-mapping.o
diff -Nru linux-2.6.11-a/arch/ppc/kernel/signal.c linux-2.6.11-b/arch/ppc/kernel/signal.c
--- linux-2.6.11-a/arch/ppc/kernel/signal.c 2005-03-02 08:38:33.000000000 +0100
+++ linux-2.6.11-b/arch/ppc/kernel/signal.c 2005-03-04 18:42:16.000000000 +0100
@@ -28,6 +28,7 @@
#include <linux/elf.h>
#include <linux/tty.h>
#include <linux/binfmts.h>
+#include <linux/suspend.h>
#include <asm/ucontext.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@@ -704,6 +705,14 @@
unsigned long frame, newsp;
int signr, ret;
+ if (current->flags & PF_FREEZE) {
+ refrigerator(PF_FREEZE);
+ signr = 0;
+ ret = regs->gpr[3];
+ if (!signal_pending(current))
+ goto no_signal;
+ }
+
if (!oldset)
oldset = ¤t->blocked;
@@ -726,6 +735,7 @@
regs->gpr[3] = EINTR;
/* note that the cr0.SO bit is already set */
} else {
+no_signal:
regs->nip -= 4; /* Back up & retry system call */
regs->result = 0;
regs->trap = 0;
diff -Nru linux-2.6.11-a/arch/ppc/kernel/swsusp.S linux-2.6.11-b/arch/ppc/kernel/swsusp.S
--- linux-2.6.11-a/arch/ppc/kernel/swsusp.S 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.11-b/arch/ppc/kernel/swsusp.S 2005-03-04 18:42:16.000000000 +0100
@@ -0,0 +1,349 @@
+#include <linux/config.h>
+#include <linux/threads.h>
+#include <asm/processor.h>
+#include <asm/page.h>
+#include <asm/cputable.h>
+#include <asm/thread_info.h>
+#include <asm/ppc_asm.h>
+#include <asm/offsets.h>
+
+
+/*
+ * Structure for storing CPU registers on the save area.
+ */
+#define SL_SP 0
+#define SL_PC 4
+#define SL_MSR 8
+#define SL_SDR1 0xc
+#define SL_SPRG0 0x10 /* 4 sprg's */
+#define SL_DBAT0 0x20
+#define SL_IBAT0 0x28
+#define SL_DBAT1 0x30
+#define SL_IBAT1 0x38
+#define SL_DBAT2 0x40
+#define SL_IBAT2 0x48
+#define SL_DBAT3 0x50
+#define SL_IBAT3 0x58
+#define SL_TB 0x60
+#define SL_R2 0x68
+#define SL_CR 0x6c
+#define SL_LR 0x70
+#define SL_R12 0x74 /* r12 to r31 */
+#define SL_SIZE (SL_R12 + 80)
+
+ .section .data
+ .align 5
+
+_GLOBAL(swsusp_save_area)
+ .space SL_SIZE
+
+
+ .section .text
+ .align 5
+
+_GLOBAL(swsusp_arch_suspend)
+
+ lis r11,swsusp_save_area@h
+ ori r11,r11,swsusp_save_area@l
+
+ mflr r0
+ stw r0,SL_LR(r11)
+ mfcr r0
+ stw r0,SL_CR(r11)
+ stw r1,SL_SP(r11)
+ stw r2,SL_R2(r11)
+ stmw r12,SL_R12(r11)
+
+ /* Save MSR & SDR1 */
+ mfmsr r4
+ stw r4,SL_MSR(r11)
+ mfsdr1 r4
+ stw r4,SL_SDR1(r11)
+
+ /* Get a stable timebase and save it */
+1: mftbu r4
+ stw r4,SL_TB(r11)
+ mftb r5
+ stw r5,SL_TB+4(r11)
+ mftbu r3
+ cmpw r3,r4
+ bne 1b
+
+ /* Save SPRGs */
+ mfsprg r4,0
+ stw r4,SL_SPRG0(r11)
+ mfsprg r4,1
+ stw r4,SL_SPRG0+4(r11)
+ mfsprg r4,2
+ stw r4,SL_SPRG0+8(r11)
+ mfsprg r4,3
+ stw r4,SL_SPRG0+12(r11)
+
+ /* Save BATs */
+ mfdbatu r4,0
+ stw r4,SL_DBAT0(r11)
+ mfdbatl r4,0
+ stw r4,SL_DBAT0+4(r11)
+ mfdbatu r4,1
+ stw r4,SL_DBAT1(r11)
+ mfdbatl r4,1
+ stw r4,SL_DBAT1+4(r11)
+ mfdbatu r4,2
+ stw r4,SL_DBAT2(r11)
+ mfdbatl r4,2
+ stw r4,SL_DBAT2+4(r11)
+ mfdbatu r4,3
+ stw r4,SL_DBAT3(r11)
+ mfdbatl r4,3
+ stw r4,SL_DBAT3+4(r11)
+ mfibatu r4,0
+ stw r4,SL_IBAT0(r11)
+ mfibatl r4,0
+ stw r4,SL_IBAT0+4(r11)
+ mfibatu r4,1
+ stw r4,SL_IBAT1(r11)
+ mfibatl r4,1
+ stw r4,SL_IBAT1+4(r11)
+ mfibatu r4,2
+ stw r4,SL_IBAT2(r11)
+ mfibatl r4,2
+ stw r4,SL_IBAT2+4(r11)
+ mfibatu r4,3
+ stw r4,SL_IBAT3(r11)
+ mfibatl r4,3
+ stw r4,SL_IBAT3+4(r11)
+
+#if 0
+ /* Backup various CPU config stuffs */
+ bl __save_cpu_setup
+#endif
+ /* Call the low level suspend stuff (we should probably have made
+ * a stackframe...
+ */
+ bl swsusp_save
+
+ /* Restore LR from the save area */
+ lis r11,swsusp_save_area@h
+ ori r11,r11,swsusp_save_area@l
+ lwz r0,SL_LR(r11)
+ mtlr r0
+
+ blr
+
+
+/* Resume code */
+_GLOBAL(swsusp_arch_resume)
+
+ /* Stop pending alitvec streams and memory accesses */
+BEGIN_FTR_SECTION
+ DSSALL
+END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
+ sync
+
+ /* Disable MSR:DR to make sure we don't take a TLB or
+ * hash miss during the copy, as our hash table will
+ * for a while be unuseable. For .text, we assume we are
+ * covered by a BAT. This works only for non-G5 at this
+ * point. G5 will need a better approach, possibly using
+ * a small temporary hash table filled with large mappings,
+ * disabling the MMU completely isn't a good option for
+ * performance reasons.
+ * (Note that 750's may have the same performance issue as
+ * the G5 in this case, we should investigate using moving
+ * BATs for these CPUs)
+ */
+ mfmsr r0
+ sync
+ rlwinm r0,r0,0,28,26 /* clear MSR_DR */
+ mtmsr r0
+ sync
+ isync
+
+ /* Load ptr the list of pages to copy in r3 */
+ lis r11,(pagedir_nosave - KERNELBASE)@h
+ ori r11,r11,pagedir_nosave@l
+ lwz r10,0(r11)
+
+ /* Copy the pages. This is a very basic implementation, to
+ * be replaced by something more cache efficient */
+1:
+ tophys(r3,r10)
+ li r0,256
+ mtctr r0
+ lwz r11,pbe_address(r3) /* source */
+ tophys(r5,r11)
+ lwz r10,pbe_orig_address(r3) /* destination */
+ tophys(r6,r10)
+2:
+ lwz r8,0(r5)
+ lwz r9,4(r5)
+ lwz r10,8(r5)
+ lwz r11,12(r5)
+ addi r5,r5,16
+ stw r8,0(r6)
+ stw r9,4(r6)
+ stw r10,8(r6)
+ stw r11,12(r6)
+ addi r6,r6,16
+ bdnz 2b
+ lwz r10,pbe_next(r3)
+ cmpwi 0,r10,0
+ bne 1b
+
+ /* Do a very simple cache flush/inval of the L1 to ensure
+ * coherency of the icache
+ */
+ lis r3,0x0002
+ mtctr r3
+ li r3, 0
+1:
+ lwz r0,0(r3)
+ addi r3,r3,0x0020
+ bdnz 1b
+ isync
+ sync
+
+ /* Now flush those cache lines */
+ lis r3,0x0002
+ mtctr r3
+ li r3, 0
+1:
+ dcbf 0,r3
+ addi r3,r3,0x0020
+ bdnz 1b
+ sync
+
+ /* Ok, we are now running with the kernel data of the old
+ * kernel fully restored. We can get to the save area
+ * easily now. As for the rest of the code, it assumes the
+ * loader kernel and the booted one are exactly identical
+ */
+ lis r11,swsusp_save_area@h
+ ori r11,r11,swsusp_save_area@l
+ tophys(r11,r11)
+
+#if 0
+ /* Restore various CPU config stuffs */
+ bl __restore_cpu_setup
+#endif
+ /* Restore the BATs, and SDR1. Then we can turn on the MMU.
+ * This is a bit hairy as we are running out of those BATs,
+ * but first, our code is probably in the icache, and we are
+ * writing the same value to the BAT, so that should be fine,
+ * though a better solution will have to be found long-term
+ */
+ lwz r4,SL_SDR1(r11)
+ mtsdr1 r4
+ lwz r4,SL_SPRG0(r11)
+ mtsprg 0,r4
+ lwz r4,SL_SPRG0+4(r11)
+ mtsprg 1,r4
+ lwz r4,SL_SPRG0+8(r11)
+ mtsprg 2,r4
+ lwz r4,SL_SPRG0+12(r11)
+ mtsprg 3,r4
+
+#if 0
+ lwz r4,SL_DBAT0(r11)
+ mtdbatu 0,r4
+ lwz r4,SL_DBAT0+4(r11)
+ mtdbatl 0,r4
+ lwz r4,SL_DBAT1(r11)
+ mtdbatu 1,r4
+ lwz r4,SL_DBAT1+4(r11)
+ mtdbatl 1,r4
+ lwz r4,SL_DBAT2(r11)
+ mtdbatu 2,r4
+ lwz r4,SL_DBAT2+4(r11)
+ mtdbatl 2,r4
+ lwz r4,SL_DBAT3(r11)
+ mtdbatu 3,r4
+ lwz r4,SL_DBAT3+4(r11)
+ mtdbatl 3,r4
+ lwz r4,SL_IBAT0(r11)
+ mtibatu 0,r4
+ lwz r4,SL_IBAT0+4(r11)
+ mtibatl 0,r4
+ lwz r4,SL_IBAT1(r11)
+ mtibatu 1,r4
+ lwz r4,SL_IBAT1+4(r11)
+ mtibatl 1,r4
+ lwz r4,SL_IBAT2(r11)
+ mtibatu 2,r4
+ lwz r4,SL_IBAT2+4(r11)
+ mtibatl 2,r4
+ lwz r4,SL_IBAT3(r11)
+ mtibatu 3,r4
+ lwz r4,SL_IBAT3+4(r11)
+ mtibatl 3,r4
+#endif
+
+BEGIN_FTR_SECTION
+ li r4,0
+ mtspr SPRN_DBAT4U,r4
+ mtspr SPRN_DBAT4L,r4
+ mtspr SPRN_DBAT5U,r4
+ mtspr SPRN_DBAT5L,r4
+ mtspr SPRN_DBAT6U,r4
+ mtspr SPRN_DBAT6L,r4
+ mtspr SPRN_DBAT7U,r4
+ mtspr SPRN_DBAT7L,r4
+ mtspr SPRN_IBAT4U,r4
+ mtspr SPRN_IBAT4L,r4
+ mtspr SPRN_IBAT5U,r4
+ mtspr SPRN_IBAT5L,r4
+ mtspr SPRN_IBAT6U,r4
+ mtspr SPRN_IBAT6L,r4
+ mtspr SPRN_IBAT7U,r4
+ mtspr SPRN_IBAT7L,r4
+END_FTR_SECTION_IFSET(CPU_FTR_HAS_HIGH_BATS)
+
+ /* Flush all TLBs */
+ lis r4,0x1000
+1: addic. r4,r4,-0x1000
+ tlbie r4
+ blt 1b
+ sync
+
+ /* restore the MSR and turn on the MMU */
+ lwz r3,SL_MSR(r11)
+ bl turn_on_mmu
+ tovirt(r11,r11)
+
+ /* Restore TB */
+ li r3,0
+ mttbl r3
+ lwz r3,SL_TB(r11)
+ lwz r4,SL_TB+4(r11)
+ mttbu r3
+ mttbl r4
+
+ /* Kick decrementer */
+ li r0,1
+ mtdec r0
+
+ /* Restore the callee-saved registers and return */
+ lwz r0,SL_CR(r11)
+ mtcr r0
+ lwz r2,SL_R2(r11)
+ lmw r12,SL_R12(r11)
+ lwz r1,SL_SP(r11)
+ lwz r0,SL_LR(r11)
+ mtlr r0
+
+ // XXX Note: we don't really need to call swsusp_resume
+
+ li r3,0
+ blr
+
+/* FIXME:This construct is actually not useful since we don't shut
+ * down the instruction MMU, we could just flip back MSR-DR on.
+ */
+turn_on_mmu:
+ mflr r4
+ mtsrr0 r4
+ mtsrr1 r3
+ sync
+ isync
+ rfi
+
diff -Nru linux-2.6.11-a/arch/ppc/kernel/vmlinux.lds.S linux-2.6.11-b/arch/ppc/kernel/vmlinux.lds.S
--- linux-2.6.11-a/arch/ppc/kernel/vmlinux.lds.S 2005-03-02 08:38:34.000000000 +0100
+++ linux-2.6.11-b/arch/ppc/kernel/vmlinux.lds.S 2005-03-04 18:42:16.000000000 +0100
@@ -74,6 +74,12 @@
CONSTRUCTORS
}
+ . = ALIGN(4096);
+ __nosave_begin = .;
+ .data_nosave : { *(.data.nosave) }
+ . = ALIGN(4096);
+ __nosave_end = .;
+
. = ALIGN(32);
.data.cacheline_aligned : { *(.data.cacheline_aligned) }
diff -Nru linux-2.6.11-a/arch/ppc/platforms/pmac_setup.c linux-2.6.11-b/arch/ppc/platforms/pmac_setup.c
--- linux-2.6.11-a/arch/ppc/platforms/pmac_setup.c 2005-03-02 08:38:13.000000000 +0100
+++ linux-2.6.11-b/arch/ppc/platforms/pmac_setup.c 2005-03-04 18:42:16.000000000 +0100
@@ -52,6 +52,7 @@
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/bitops.h>
+#include <linux/suspend.h>
#include <asm/reg.h>
#include <asm/sections.h>
@@ -70,6 +71,8 @@
#include <asm/pmac_feature.h>
#include <asm/time.h>
#include <asm/of_device.h>
+#include <asm/mmu_context.h>
+
#include "pmac_pic.h"
#include "mem_pieces.h"
@@ -421,10 +424,62 @@
}
static int initializing = 1;
+/* TODO: Merge the suspend-to-ram with the common code !!!
+ * currently, this is a stub implementation for suspend-to-disk
+ * only
+ */
+
+#ifdef CONFIG_SOFTWARE_SUSPEND
+
+static int pmac_pm_prepare(suspend_state_t state)
+{
+ printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
+
+ return 0;
+}
+
+static int pmac_pm_enter(suspend_state_t state)
+{
+ printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
+
+ /* Giveup the lazy FPU & vec so we don't have to back them
+ * up from the low level code
+ */
+ enable_kernel_fp();
+
+#ifdef CONFIG_ALTIVEC
+ if (cur_cpu_spec[0]->cpu_features & CPU_FTR_ALTIVEC)
+ enable_kernel_altivec();
+#endif /* CONFIG_ALTIVEC */
+
+ return 0;
+}
+
+static int pmac_pm_finish(suspend_state_t state)
+{
+ printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
+
+ /* Restore userland MMU context */
+ set_context(current->active_mm->context, current->active_mm->pgd);
+
+ return 0;
+}
+
+static struct pm_ops pmac_pm_ops = {
+ .pm_disk_mode = PM_DISK_SHUTDOWN,
+ .prepare = pmac_pm_prepare,
+ .enter = pmac_pm_enter,
+ .finish = pmac_pm_finish,
+};
+
+#endif /* CONFIG_SOFTWARE_SUSPEND */
static int pmac_late_init(void)
{
initializing = 0;
+#ifdef CONFIG_SOFTWARE_SUSPEND
+ pm_set_ops(&pmac_pm_ops);
+#endif /* CONFIG_SOFTWARE_SUSPEND */
return 0;
}
diff -Nru linux-2.6.11-a/drivers/macintosh/via-pmu.c linux-2.6.11-b/drivers/macintosh/via-pmu.c
--- linux-2.6.11-a/drivers/macintosh/via-pmu.c 2005-03-02 08:38:25.000000000 +0100
+++ linux-2.6.11-b/drivers/macintosh/via-pmu.c 2005-03-04 18:42:16.000000000 +0100
@@ -43,6 +43,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/device.h>
+#include <linux/sysdev.h>
#include <linux/suspend.h>
#include <linux/syscalls.h>
#include <linux/cpu.h>
@@ -2326,7 +2327,7 @@
/* Sync the disks. */
/* XXX It would be nice to have some way to ensure that
* nobody is dirtying any new buffers while we wait. That
- * could be acheived using the refrigerator for processes
+ * could be achieved using the refrigerator for processes
* that swsusp uses
*/
sys_sync();
@@ -2379,7 +2380,6 @@
/* Wait for completion of async backlight requests */
while (!bright_req_1.complete || !bright_req_2.complete ||
-
!batt_req.complete)
pmu_poll();
@@ -3040,6 +3040,88 @@
}
#endif /* DEBUG_SLEEP */
+
+/* FIXME: This is a temporary set of callbacks to enable us
+ * to do suspend-to-disk.
+ */
+
+#ifdef CONFIG_PM
+
+static int pmu_sys_suspended = 0;
+
+static int pmu_sys_suspend(struct sys_device *sysdev, u32 state)
+{
+ if (state != PM_SUSPEND_DISK || pmu_sys_suspended)
+ return 0;
+
+ /* Suspend PMU event interrupts */
+ pmu_suspend();
+
+ pmu_sys_suspended = 1;
+ return 0;
+}
+
+static int pmu_sys_resume(struct sys_device *sysdev)
+{
+ struct adb_request req;
+
+ if (!pmu_sys_suspended)
+ return 0;
+
+ /* Tell PMU we are ready */
+ pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
+ pmu_wait_complete(&req);
+
+ /* Resume PMU event interrupts */
+ pmu_resume();
+
+ pmu_sys_suspended = 0;
+
+ return 0;
+}
+
+#endif /* CONFIG_PM */
+
+static struct sysdev_class pmu_sysclass = {
+ set_kset_name("pmu"),
+};
+
+static struct sys_device device_pmu = {
+ .id = 0,
+ .cls = &pmu_sysclass,
+};
+
+static struct sysdev_driver driver_pmu = {
+#ifdef CONFIG_PM
+ .suspend = &pmu_sys_suspend,
+ .resume = &pmu_sys_resume,
+#endif /* CONFIG_PM */
+};
+
+static int __init init_pmu_sysfs(void)
+{
+ int rc;
+
+ rc = sysdev_class_register(&pmu_sysclass);
+ if (rc) {
+ printk(KERN_ERR "Failed registering PMU sys class\n");
+ return -ENODEV;
+ }
+ rc = sysdev_register(&device_pmu);
+ if (rc) {
+ printk(KERN_ERR "Failed registering PMU sys device\n");
+ return -ENODEV;
+ }
+ rc = sysdev_driver_register(&pmu_sysclass, &driver_pmu);
+ if (rc) {
+ printk(KERN_ERR "Failed registering PMU sys driver\n");
+ return -ENODEV;
+ }
+ return 0;
+}
+
+subsys_initcall(init_pmu_sysfs);
+
EXPORT_SYMBOL(pmu_request);
EXPORT_SYMBOL(pmu_poll);
EXPORT_SYMBOL(pmu_poll_adb);
diff -Nru linux-2.6.11-a/include/asm-ppc/suspend.h linux-2.6.11-b/include/asm-ppc/suspend.h
--- linux-2.6.11-a/include/asm-ppc/suspend.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.11-b/include/asm-ppc/suspend.h 2005-03-04 18:42:16.000000000 +0100
@@ -0,0 +1,12 @@
+static inline int arch_prepare_suspend(void)
+{
+ return 0;
+}
+
+static inline void save_processor_state(void)
+{
+}
+
+static inline void restore_processor_state(void)
+{
+}
diff -Nru linux-2.6.11-a/include/linux/suspend.h linux-2.6.11-b/include/linux/suspend.h
--- linux-2.6.11-a/include/linux/suspend.h 2005-03-02 08:37:50.000000000 +0100
+++ linux-2.6.11-b/include/linux/suspend.h 2005-03-04 18:42:16.000000000 +0100
@@ -1,7 +1,7 @@
#ifndef _LINUX_SWSUSP_H
#define _LINUX_SWSUSP_H
-#if defined(CONFIG_X86) || defined(CONFIG_FRV)
+#if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32)
#include <asm/suspend.h>
#endif
#include <linux/swap.h>
--
- Would you tell me, please, which way I ought to go from here?
- That depends a good deal on where you want to get to.
-- Lewis Carroll "Alice's Adventures in Wonderland"
Hi,
On Tuesday, 8 of March 2005 13:00, Rafael J. Wysocki wrote:
]-- snip --[
> > > Now, akpm sent all (?) swsusp updates to Linus, so it should appear in
> > > bk tree later today. If you could regenerate the patches (1/3 will no
> > > longer be needed) and send them to me & l-k. I'll then forward them to
> > > akpm. [He seems to prefer patches to come from my email address :-)]
> >
> > OK
> >
> > Here's the 2/3 one (ie the main resume part). Do you need the summary?
>
> Here's the 3/3 one (ie the ppc support from hugang).
>
> The patches are against 2.6.11 + 1/3 (ie suspend part), but they should
> apply cleanly to the -bk w/ the suspend part as well.
FYI, 2.6.11-kb5 is out and it contains the "suspend" patch. The patches that
I have sent you apply to it cleanly.
Greets,
Rafael
--
- Would you tell me, please, which way I ought to go from here?
- That depends a good deal on where you want to get to.
-- Lewis Carroll "Alice's Adventures in Wonderland"