Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423379Ab2KNTNH (ORCPT ); Wed, 14 Nov 2012 14:13:07 -0500 Received: from userp1040.oracle.com ([156.151.31.81]:30638 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423200Ab2KNTNB (ORCPT ); Wed, 14 Nov 2012 14:13:01 -0500 From: Konrad Rzeszutek Wilk To: sjenning@linux.vnet.ibm.com, dan.magenheimer@oracle.com, devel@linuxdriverproject.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, ngupta@vflare.org, minchan@kernel.org, akpm@linux-foundation.org, mgorman@suse.de Cc: fschmaus@gmail.com, andor.daam@googlemail.com, ilendir@googlemail.com, Konrad Rzeszutek Wilk Subject: [PATCH 06/11] zcache: Move debugfs code out of zcache-main.c file. Date: Wed, 14 Nov 2012 14:12:14 -0500 Message-Id: <1352920339-10183-7-git-send-email-konrad.wilk@oracle.com> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: <1352920339-10183-1-git-send-email-konrad.wilk@oracle.com> References: <1352920339-10183-1-git-send-email-konrad.wilk@oracle.com> X-Source-IP: acsinet22.oracle.com [141.146.126.238] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 26076 Lines: 610 Reviewed-by: Dan Magenheimer Signed-off-by: Konrad Rzeszutek Wilk --- drivers/staging/ramster/Makefile | 1 + drivers/staging/ramster/debug.c | 113 +++++++++++++++ drivers/staging/ramster/debug.h | 183 ++++++++++++++++++++++++ drivers/staging/ramster/zcache-main.c | 247 +-------------------------------- 4 files changed, 304 insertions(+), 240 deletions(-) create mode 100644 drivers/staging/ramster/debug.c create mode 100644 drivers/staging/ramster/debug.h diff --git a/drivers/staging/ramster/Makefile b/drivers/staging/ramster/Makefile index fcb25cb..61f5050 100644 --- a/drivers/staging/ramster/Makefile +++ b/drivers/staging/ramster/Makefile @@ -4,4 +4,5 @@ zcache-y += ramster/ramster.o ramster/r2net.o zcache-y += ramster/nodemanager.o ramster/tcp.o zcache-y += ramster/heartbeat.o ramster/masklog.o endif +zcache-y-$(CONFIG_ZCACHE_DEBUG) += debug.o obj-$(CONFIG_MODULES) += zcache.o diff --git a/drivers/staging/ramster/debug.c b/drivers/staging/ramster/debug.c new file mode 100644 index 0000000..0d19715 --- /dev/null +++ b/drivers/staging/ramster/debug.c @@ -0,0 +1,113 @@ +#include +#include "debug.h" + +#ifdef CONFIG_DEBUG_FS +#include +#define zdfs debugfs_create_size_t +#define zdfs64 debugfs_create_u64 +int zcache_debugfs_init(void) +{ + struct dentry *root = debugfs_create_dir("zcache", NULL); + if (root == NULL) + return -ENXIO; + + zdfs("obj_count", S_IRUGO, root, &zcache_obj_count); + zdfs("obj_count_max", S_IRUGO, root, &zcache_obj_count_max); + zdfs("objnode_count", S_IRUGO, root, &zcache_objnode_count); + zdfs("objnode_count_max", S_IRUGO, root, &zcache_objnode_count_max); + zdfs("flush_total", S_IRUGO, root, &zcache_flush_total); + zdfs("flush_found", S_IRUGO, root, &zcache_flush_found); + zdfs("flobj_total", S_IRUGO, root, &zcache_flobj_total); + zdfs("flobj_found", S_IRUGO, root, &zcache_flobj_found); + zdfs("failed_eph_puts", S_IRUGO, root, &zcache_failed_eph_puts); + zdfs("failed_pers_puts", S_IRUGO, root, &zcache_failed_pers_puts); + zdfs("failed_get_free_pages", S_IRUGO, root, + &zcache_failed_getfreepages); + zdfs("failed_alloc", S_IRUGO, root, &zcache_failed_alloc); + zdfs("put_to_flush", S_IRUGO, root, &zcache_put_to_flush); + zdfs("compress_poor", S_IRUGO, root, &zcache_compress_poor); + zdfs("mean_compress_poor", S_IRUGO, root, &zcache_mean_compress_poor); + zdfs("eph_ate_tail", S_IRUGO, root, &zcache_eph_ate_tail); + zdfs("eph_ate_tail_failed", S_IRUGO, root, &zcache_eph_ate_tail_failed); + zdfs("pers_ate_eph", S_IRUGO, root, &zcache_pers_ate_eph); + zdfs("pers_ate_eph_failed", S_IRUGO, root, &zcache_pers_ate_eph_failed); + zdfs("evicted_eph_zpages", S_IRUGO, root, &zcache_evicted_eph_zpages); + zdfs("evicted_eph_pageframes", S_IRUGO, root, + &zcache_evicted_eph_pageframes); + zdfs("eph_pageframes", S_IRUGO, root, &zcache_eph_pageframes); + zdfs("eph_pageframes_max", S_IRUGO, root, &zcache_eph_pageframes_max); + zdfs("pers_pageframes", S_IRUGO, root, &zcache_pers_pageframes); + zdfs("pers_pageframes_max", S_IRUGO, root, &zcache_pers_pageframes_max); + zdfs("eph_zpages", S_IRUGO, root, &zcache_eph_zpages); + zdfs("eph_zpages_max", S_IRUGO, root, &zcache_eph_zpages_max); + zdfs("pers_zpages", S_IRUGO, root, &zcache_pers_zpages); + zdfs("pers_zpages_max", S_IRUGO, root, &zcache_pers_zpages_max); + zdfs("last_active_file_pageframes", S_IRUGO, root, + &zcache_last_active_file_pageframes); + zdfs("last_inactive_file_pageframes", S_IRUGO, root, + &zcache_last_inactive_file_pageframes); + zdfs("last_active_anon_pageframes", S_IRUGO, root, + &zcache_last_active_anon_pageframes); + zdfs("last_inactive_anon_pageframes", S_IRUGO, root, + &zcache_last_inactive_anon_pageframes); + zdfs("eph_nonactive_puts_ignored", S_IRUGO, root, + &zcache_eph_nonactive_puts_ignored); + zdfs("pers_nonactive_puts_ignored", S_IRUGO, root, + &zcache_pers_nonactive_puts_ignored); + zdfs64("eph_zbytes", S_IRUGO, root, &zcache_eph_zbytes); + zdfs64("eph_zbytes_max", S_IRUGO, root, &zcache_eph_zbytes_max); + zdfs64("pers_zbytes", S_IRUGO, root, &zcache_pers_zbytes); + zdfs64("pers_zbytes_max", S_IRUGO, root, &zcache_pers_zbytes_max); + return 0; +} +#undef zdebugfs +#undef zdfs64 + +/* developers can call this in case of ooms, e.g. to find memory leaks */ +void zcache_dump(void) +{ + pr_debug("zcache: obj_count=%u\n", zcache_obj_count); + pr_debug("zcache: obj_count_max=%u\n", zcache_obj_count_max); + pr_debug("zcache: objnode_count=%u\n", zcache_objnode_count); + pr_debug("zcache: objnode_count_max=%u\n", zcache_objnode_count_max); + pr_debug("zcache: flush_total=%u\n", zcache_flush_total); + pr_debug("zcache: flush_found=%u\n", zcache_flush_found); + pr_debug("zcache: flobj_total=%u\n", zcache_flobj_total); + pr_debug("zcache: flobj_found=%u\n", zcache_flobj_found); + pr_debug("zcache: failed_eph_puts=%u\n", zcache_failed_eph_puts); + pr_debug("zcache: failed_pers_puts=%u\n", zcache_failed_pers_puts); + pr_debug("zcache: failed_get_free_pages=%u\n", + zcache_failed_getfreepages); + pr_debug("zcache: failed_alloc=%u\n", zcache_failed_alloc); + pr_debug("zcache: put_to_flush=%u\n", zcache_put_to_flush); + pr_debug("zcache: compress_poor=%u\n", zcache_compress_poor); + pr_debug("zcache: mean_compress_poor=%u\n", + zcache_mean_compress_poor); + pr_debug("zcache: eph_ate_tail=%u\n", zcache_eph_ate_tail); + pr_debug("zcache: eph_ate_tail_failed=%u\n", + zcache_eph_ate_tail_failed); + pr_debug("zcache: pers_ate_eph=%u\n", zcache_pers_ate_eph); + pr_debug("zcache: pers_ate_eph_failed=%u\n", + zcache_pers_ate_eph_failed); + pr_debug("zcache: evicted_eph_zpages=%u\n", zcache_evicted_eph_zpages); + pr_debug("zcache: evicted_eph_pageframes=%u\n", + zcache_evicted_eph_pageframes); + pr_debug("zcache: eph_pageframes=%u\n", zcache_eph_pageframes); + pr_debug("zcache: eph_pageframes_max=%u\n", zcache_eph_pageframes_max); + pr_debug("zcache: pers_pageframes=%u\n", zcache_pers_pageframes); + pr_debug("zcache: pers_pageframes_max=%u\n", + zcache_pers_pageframes_max); + pr_debug("zcache: eph_zpages=%u\n", zcache_eph_zpages); + pr_debug("zcache: eph_zpages_max=%u\n", zcache_eph_zpages_max); + pr_debug("zcache: pers_zpages=%u\n", zcache_pers_zpages); + pr_debug("zcache: pers_zpages_max=%u\n", zcache_pers_zpages_max); + pr_debug("zcache: eph_zbytes=%llu\n", + (unsigned long long)zcache_eph_zbytes); + pr_debug("zcache: eph_zbytes_max=%llu\n", + (unsigned long long)zcache_eph_zbytes_max); + pr_debug("zcache: pers_zbytes=%llu\n", + (unsigned long long)zcache_pers_zbytes); + pr_debug("zcache: pers_zbytes_max=%llu\n", + (unsigned long long)zcache_pers_zbytes_max); +} +#endif diff --git a/drivers/staging/ramster/debug.h b/drivers/staging/ramster/debug.h new file mode 100644 index 0000000..496735b --- /dev/null +++ b/drivers/staging/ramster/debug.h @@ -0,0 +1,183 @@ +#ifdef CONFIG_ZCACHE_DEBUG + +/* we try to keep these statistics SMP-consistent */ +static ssize_t zcache_obj_count; +static atomic_t zcache_obj_atomic = ATOMIC_INIT(0); +static ssize_t zcache_obj_count_max; +static inline void inc_zcache_obj_count(void) +{ + zcache_obj_count = atomic_inc_return(&zcache_obj_atomic); + if (zcache_obj_count > zcache_obj_count_max) + zcache_obj_count_max = zcache_obj_count; +} +static inline void dec_zcache_obj_count(void) +{ + zcache_obj_count = atomic_dec_return(&zcache_obj_atomic); + BUG_ON(zcache_obj_count < 0); +}; +static ssize_t zcache_objnode_count; +static atomic_t zcache_objnode_atomic = ATOMIC_INIT(0); +static ssize_t zcache_objnode_count_max; +static inline void inc_zcache_objnode_count(void) +{ + zcache_objnode_count = atomic_inc_return(&zcache_objnode_atomic); + if (zcache_objnode_count > zcache_objnode_count_max) + zcache_objnode_count_max = zcache_objnode_count; +}; +static inline void dec_zcache_objnode_count(void) +{ + zcache_objnode_count = atomic_dec_return(&zcache_objnode_atomic); + BUG_ON(zcache_objnode_count < 0); +}; +static u64 zcache_eph_zbytes; +static atomic_long_t zcache_eph_zbytes_atomic = ATOMIC_INIT(0); +static u64 zcache_eph_zbytes_max; +static inline void inc_zcache_eph_zbytes(unsigned clen) +{ + zcache_eph_zbytes = atomic_long_add_return(clen, &zcache_eph_zbytes_atomic); + if (zcache_eph_zbytes > zcache_eph_zbytes_max) + zcache_eph_zbytes_max = zcache_eph_zbytes; +}; +static inline void dec_zcache_eph_zbytes(unsigned zsize) +{ + zcache_eph_zbytes = atomic_long_sub_return(zsize, &zcache_eph_zbytes_atomic); +}; +extern u64 zcache_pers_zbytes; +static atomic_long_t zcache_pers_zbytes_atomic = ATOMIC_INIT(0); +static u64 zcache_pers_zbytes_max; +static inline void inc_zcache_pers_zbytes(unsigned clen) +{ + zcache_pers_zbytes = atomic_long_add_return(clen, &zcache_pers_zbytes_atomic); + if (zcache_pers_zbytes > zcache_pers_zbytes_max) + zcache_pers_zbytes_max = zcache_pers_zbytes; +} +static inline void dec_zcache_pers_zbytes(unsigned zsize) +{ + zcache_pers_zbytes = atomic_long_sub_return(zsize, &zcache_pers_zbytes_atomic); +} +extern ssize_t zcache_eph_pageframes; +static atomic_t zcache_eph_pageframes_atomic = ATOMIC_INIT(0); +static ssize_t zcache_eph_pageframes_max; +static inline void inc_zcache_eph_pageframes(void) +{ + zcache_eph_pageframes = atomic_inc_return(&zcache_eph_pageframes_atomic); + if (zcache_eph_pageframes > zcache_eph_pageframes_max) + zcache_eph_pageframes_max = zcache_eph_pageframes; +}; +static inline void dec_zcache_eph_pageframes(void) +{ + zcache_eph_pageframes = atomic_dec_return(&zcache_eph_pageframes_atomic); +}; +extern ssize_t zcache_pers_pageframes; +static atomic_t zcache_pers_pageframes_atomic = ATOMIC_INIT(0); +static ssize_t zcache_pers_pageframes_max; +static inline void inc_zcache_pers_pageframes(void) +{ + zcache_pers_pageframes = atomic_inc_return(&zcache_pers_pageframes_atomic); + if (zcache_pers_pageframes > zcache_pers_pageframes_max) + zcache_pers_pageframes_max = zcache_pers_pageframes; +} +static inline void dec_zcache_pers_pageframes(void) +{ + zcache_pers_pageframes = atomic_dec_return(&zcache_pers_pageframes_atomic); +} +static ssize_t zcache_pageframes_alloced; +static atomic_t zcache_pageframes_alloced_atomic = ATOMIC_INIT(0); +static inline void inc_zcache_pageframes_alloced(void) +{ + zcache_pageframes_alloced = atomic_inc_return(&zcache_pageframes_alloced_atomic); +}; +static ssize_t zcache_pageframes_freed; +static atomic_t zcache_pageframes_freed_atomic = ATOMIC_INIT(0); +static inline void inc_zcache_pageframes_freed(void) +{ + zcache_pageframes_freed = atomic_inc_return(&zcache_pageframes_freed_atomic); +} +static ssize_t zcache_eph_zpages; +static atomic_t zcache_eph_zpages_atomic = ATOMIC_INIT(0); +static ssize_t zcache_eph_zpages_max; +static inline void inc_zcache_eph_zpages(void) +{ + zcache_eph_zpages = atomic_inc_return(&zcache_eph_zpages_atomic); + if (zcache_eph_zpages > zcache_eph_zpages_max) + zcache_eph_zpages_max = zcache_eph_zpages; +} +static inline void dec_zcache_eph_zpages(unsigned zpages) +{ + zcache_eph_zpages = atomic_sub_return(zpages, &zcache_eph_zpages_atomic); +} +extern ssize_t zcache_pers_zpages; +static atomic_t zcache_pers_zpages_atomic = ATOMIC_INIT(0); +static ssize_t zcache_pers_zpages_max; +static inline void inc_zcache_pers_zpages(void) +{ + zcache_pers_zpages = atomic_inc_return(&zcache_pers_zpages_atomic); + if (zcache_pers_zpages > zcache_pers_zpages_max) + zcache_pers_zpages_max = zcache_pers_zpages; +} +static inline void dec_zcache_pers_zpages(unsigned zpages) +{ + zcache_pers_zpages = atomic_sub_return(zpages, &zcache_pers_zpages_atomic); +} + +static inline unsigned long curr_pageframes_count(void) +{ + return zcache_pageframes_alloced - + atomic_read(&zcache_pageframes_freed_atomic) - + atomic_read(&zcache_eph_pageframes_atomic) - + atomic_read(&zcache_pers_pageframes_atomic); +}; +/* but for the rest of these, counting races are ok */ +extern ssize_t zcache_flush_total; +extern ssize_t zcache_flush_found; +extern ssize_t zcache_flobj_total; +extern ssize_t zcache_flobj_found; +extern ssize_t zcache_failed_eph_puts; +extern ssize_t zcache_failed_pers_puts; +extern ssize_t zcache_failed_getfreepages; +extern ssize_t zcache_failed_alloc; +extern ssize_t zcache_put_to_flush; +extern ssize_t zcache_compress_poor; +extern ssize_t zcache_mean_compress_poor; +extern ssize_t zcache_eph_ate_tail; +extern ssize_t zcache_eph_ate_tail_failed; +extern ssize_t zcache_pers_ate_eph; +extern ssize_t zcache_pers_ate_eph_failed; +extern ssize_t zcache_evicted_eph_zpages; +extern ssize_t zcache_evicted_eph_pageframes; +extern ssize_t zcache_last_active_file_pageframes; +extern ssize_t zcache_last_inactive_file_pageframes; +extern ssize_t zcache_last_active_anon_pageframes; +extern ssize_t zcache_last_inactive_anon_pageframes; +extern ssize_t zcache_eph_nonactive_puts_ignored; +extern ssize_t zcache_pers_nonactive_puts_ignored; + +int zcache_debugfs_init(void); +#else +static inline void inc_zcache_obj_count(void) { }; +static inline void dec_zcache_obj_count(void) { }; +static inline void inc_zcache_objnode_count(void) { }; +static inline void dec_zcache_objnode_count(void) { }; +static inline void inc_zcache_eph_zbytes(unsigned clen) { }; +static inline void dec_zcache_eph_zbytes(unsigned zsize) { }; +static inline void inc_zcache_pers_zbytes(unsigned clen) { }; +static inline void dec_zcache_pers_zbytes(unsigned zsize) { }; +static inline void inc_zcache_eph_pageframes(void) { }; +static inline void dec_zcache_eph_pageframes(void) { }; +static inline void inc_zcache_pers_pageframes(void) { }; +static inline void dec_zcache_pers_pageframes(void) { }; +static inline void inc_zcache_pageframes_alloced(void) { }; +static inline void inc_zcache_pageframes_freed(void) { }; +static inline void inc_zcache_eph_zpages(void) { }; +static inline void dec_zcache_eph_zpages(unsigned zpages) { }; +static inline void inc_zcache_pers_zpages(void) { }; +static inline void dec_zcache_pers_zpages(unsigned zpages) { }; +static inline unsigned long curr_pageframes_count(void) +{ + return 0; +}; +static inline int zcache_debugfs_init(void) +{ + return 0; +}; +#endif diff --git a/drivers/staging/ramster/zcache-main.c b/drivers/staging/ramster/zcache-main.c index a43c3b0..52c29de 100644 --- a/drivers/staging/ramster/zcache-main.c +++ b/drivers/staging/ramster/zcache-main.c @@ -29,6 +29,7 @@ #include "zcache.h" #include "zbud.h" #include "ramster.h" +#include "debug.h" #ifdef CONFIG_RAMSTER static bool ramster_enabled __read_mostly; static bool disable_frontswap_selfshrink __read_mostly; @@ -133,135 +134,13 @@ static struct kmem_cache *zcache_obj_cache; static DEFINE_PER_CPU(struct zcache_preload, zcache_preloads) = { 0, }; -/* we try to keep these statistics SMP-consistent */ -static ssize_t zcache_obj_count; -static atomic_t zcache_obj_atomic = ATOMIC_INIT(0); -static ssize_t zcache_obj_count_max; -static inline void inc_zcache_obj_count(void) -{ - zcache_obj_count = atomic_inc_return(&zcache_obj_atomic); - if (zcache_obj_count > zcache_obj_count_max) - zcache_obj_count_max = zcache_obj_count; -} -static ssize_t zcache_objnode_count; -static inline void dec_zcache_obj_count(void) -{ - zcache_obj_count = atomic_dec_return(&zcache_obj_atomic); - BUG_ON(zcache_obj_count < 0); -}; -static atomic_t zcache_objnode_atomic = ATOMIC_INIT(0); -static ssize_t zcache_objnode_count_max; -static inline void inc_zcache_objnode_count(void) -{ - zcache_objnode_count = atomic_inc_return(&zcache_objnode_atomic); - if (zcache_objnode_count > zcache_objnode_count_max) - zcache_objnode_count_max = zcache_objnode_count; -}; -static inline void dec_zcache_objnode_count(void) -{ - zcache_objnode_count = atomic_dec_return(&zcache_objnode_atomic); - BUG_ON(zcache_objnode_count < 0); -}; -static u64 zcache_eph_zbytes; -static atomic_long_t zcache_eph_zbytes_atomic = ATOMIC_INIT(0); -static u64 zcache_eph_zbytes_max; -static inline void inc_zcache_eph_zbytes(unsigned clen) -{ - zcache_eph_zbytes = atomic_long_add_return(clen, &zcache_eph_zbytes_atomic); - if (zcache_eph_zbytes > zcache_eph_zbytes_max) - zcache_eph_zbytes_max = zcache_eph_zbytes; -}; -static inline void dec_zcache_eph_zbytes(unsigned zsize) -{ - zcache_eph_zbytes = atomic_long_sub_return(zsize, &zcache_eph_zbytes_atomic); -}; -static u64 zcache_pers_zbytes; -static atomic_long_t zcache_pers_zbytes_atomic = ATOMIC_INIT(0); -static u64 zcache_pers_zbytes_max; -static inline void inc_zcache_pers_zbytes(unsigned clen) -{ - zcache_pers_zbytes = atomic_long_add_return(clen, &zcache_pers_zbytes_atomic); - if (zcache_pers_zbytes > zcache_pers_zbytes_max) - zcache_pers_zbytes_max = zcache_pers_zbytes; -} -static ssize_t zcache_eph_pageframes; -static inline void dec_zcache_pers_zbytes(unsigned zsize) -{ - zcache_pers_zbytes = atomic_long_sub_return(zsize, &zcache_pers_zbytes_atomic); -} -static atomic_t zcache_eph_pageframes_atomic = ATOMIC_INIT(0); -static ssize_t zcache_eph_pageframes_max; -static inline void inc_zcache_eph_pageframes(void) -{ - zcache_eph_pageframes = atomic_inc_return(&zcache_eph_pageframes_atomic); - if (zcache_eph_pageframes > zcache_eph_pageframes_max) - zcache_eph_pageframes_max = zcache_eph_pageframes; -}; -static ssize_t zcache_pers_pageframes; -static inline void dec_zcache_eph_pageframes(void) -{ - zcache_eph_pageframes = atomic_dec_return(&zcache_eph_pageframes_atomic); -}; -static atomic_t zcache_pers_pageframes_atomic = ATOMIC_INIT(0); -static ssize_t zcache_pers_pageframes_max; -static inline void inc_zcache_pers_pageframes(void) -{ - zcache_pers_pageframes = atomic_inc_return(&zcache_pers_pageframes_atomic); - if (zcache_pers_pageframes > zcache_pers_pageframes_max) - zcache_pers_pageframes_max = zcache_pers_pageframes; -} -static ssize_t zcache_pageframes_alloced; -static inline void dec_zcache_pers_pageframes(void) -{ - zcache_pers_pageframes = atomic_dec_return(&zcache_pers_pageframes_atomic); -} -static atomic_t zcache_pageframes_alloced_atomic = ATOMIC_INIT(0); -static ssize_t zcache_pageframes_freed; -static atomic_t zcache_pageframes_freed_atomic = ATOMIC_INIT(0); -static ssize_t zcache_eph_zpages; -static inline void inc_zcache_pageframes_alloced(void) -{ - zcache_pageframes_alloced = atomic_inc_return(&zcache_pageframes_alloced_atomic); -}; -static inline void inc_zcache_pageframes_freed(void) -{ - zcache_pageframes_freed = atomic_inc_return(&zcache_pageframes_freed_atomic); -} -static ssize_t zcache_eph_zpages; -static atomic_t zcache_eph_zpages_atomic = ATOMIC_INIT(0); -static ssize_t zcache_eph_zpages_max; -static inline void inc_zcache_eph_zpages(void) -{ - zcache_eph_zpages = atomic_inc_return(&zcache_eph_zpages_atomic); - if (zcache_eph_zpages > zcache_eph_zpages_max) - zcache_eph_zpages_max = zcache_eph_zpages; -} -static ssize_t zcache_pers_zpages; -static inline void dec_zcache_eph_zpages(unsigned zpages) -{ - zcache_eph_zpages = atomic_sub_return(zpages, &zcache_eph_zpages_atomic); -} -static atomic_t zcache_pers_zpages_atomic = ATOMIC_INIT(0); -static ssize_t zcache_pers_zpages_max; -static inline void inc_zcache_pers_zpages(void) -{ - zcache_pers_zpages = atomic_inc_return(&zcache_pers_zpages_atomic); - if (zcache_pers_zpages > zcache_pers_zpages_max) - zcache_pers_zpages_max = zcache_pers_zpages; -} -static inline void dec_zcache_pers_zpages(unsigned zpages) -{ - zcache_pers_zpages = atomic_sub_return(zpages, &zcache_pers_zpages_atomic); -} +/* Used by debug.c */ +ssize_t zcache_pers_zpages; +u64 zcache_pers_zbytes; +ssize_t zcache_eph_pageframes; +ssize_t zcache_pers_pageframes; -static inline unsigned long curr_pageframes_count(void) -{ - return zcache_pageframes_alloced - - atomic_read(&zcache_pageframes_freed_atomic) - - atomic_read(&zcache_eph_pageframes_atomic) - - atomic_read(&zcache_pers_pageframes_atomic); -}; -/* but for the rest of these, counting races are ok */ +/* Used by this code. */ static ssize_t zcache_flush_total; static ssize_t zcache_flush_found; static ssize_t zcache_flobj_total; @@ -285,118 +164,6 @@ static ssize_t zcache_last_active_anon_pageframes; static ssize_t zcache_last_inactive_anon_pageframes; static ssize_t zcache_eph_nonactive_puts_ignored; static ssize_t zcache_pers_nonactive_puts_ignored; - -#ifdef CONFIG_DEBUG_FS -#include -#define zdfs debugfs_create_size_t -#define zdfs64 debugfs_create_u64 -static int zcache_debugfs_init(void) -{ - struct dentry *root = debugfs_create_dir("zcache", NULL); - if (root == NULL) - return -ENXIO; - - zdfs("obj_count", S_IRUGO, root, &zcache_obj_count); - zdfs("obj_count_max", S_IRUGO, root, &zcache_obj_count_max); - zdfs("objnode_count", S_IRUGO, root, &zcache_objnode_count); - zdfs("objnode_count_max", S_IRUGO, root, &zcache_objnode_count_max); - zdfs("flush_total", S_IRUGO, root, &zcache_flush_total); - zdfs("flush_found", S_IRUGO, root, &zcache_flush_found); - zdfs("flobj_total", S_IRUGO, root, &zcache_flobj_total); - zdfs("flobj_found", S_IRUGO, root, &zcache_flobj_found); - zdfs("failed_eph_puts", S_IRUGO, root, &zcache_failed_eph_puts); - zdfs("failed_pers_puts", S_IRUGO, root, &zcache_failed_pers_puts); - zdfs("failed_get_free_pages", S_IRUGO, root, - &zcache_failed_getfreepages); - zdfs("failed_alloc", S_IRUGO, root, &zcache_failed_alloc); - zdfs("put_to_flush", S_IRUGO, root, &zcache_put_to_flush); - zdfs("compress_poor", S_IRUGO, root, &zcache_compress_poor); - zdfs("mean_compress_poor", S_IRUGO, root, &zcache_mean_compress_poor); - zdfs("eph_ate_tail", S_IRUGO, root, &zcache_eph_ate_tail); - zdfs("eph_ate_tail_failed", S_IRUGO, root, &zcache_eph_ate_tail_failed); - zdfs("pers_ate_eph", S_IRUGO, root, &zcache_pers_ate_eph); - zdfs("pers_ate_eph_failed", S_IRUGO, root, &zcache_pers_ate_eph_failed); - zdfs("evicted_eph_zpages", S_IRUGO, root, &zcache_evicted_eph_zpages); - zdfs("evicted_eph_pageframes", S_IRUGO, root, - &zcache_evicted_eph_pageframes); - zdfs("eph_pageframes", S_IRUGO, root, &zcache_eph_pageframes); - zdfs("eph_pageframes_max", S_IRUGO, root, &zcache_eph_pageframes_max); - zdfs("pers_pageframes", S_IRUGO, root, &zcache_pers_pageframes); - zdfs("pers_pageframes_max", S_IRUGO, root, &zcache_pers_pageframes_max); - zdfs("eph_zpages", S_IRUGO, root, &zcache_eph_zpages); - zdfs("eph_zpages_max", S_IRUGO, root, &zcache_eph_zpages_max); - zdfs("pers_zpages", S_IRUGO, root, &zcache_pers_zpages); - zdfs("pers_zpages_max", S_IRUGO, root, &zcache_pers_zpages_max); - zdfs("last_active_file_pageframes", S_IRUGO, root, - &zcache_last_active_file_pageframes); - zdfs("last_inactive_file_pageframes", S_IRUGO, root, - &zcache_last_inactive_file_pageframes); - zdfs("last_active_anon_pageframes", S_IRUGO, root, - &zcache_last_active_anon_pageframes); - zdfs("last_inactive_anon_pageframes", S_IRUGO, root, - &zcache_last_inactive_anon_pageframes); - zdfs("eph_nonactive_puts_ignored", S_IRUGO, root, - &zcache_eph_nonactive_puts_ignored); - zdfs("pers_nonactive_puts_ignored", S_IRUGO, root, - &zcache_pers_nonactive_puts_ignored); - zdfs64("eph_zbytes", S_IRUGO, root, &zcache_eph_zbytes); - zdfs64("eph_zbytes_max", S_IRUGO, root, &zcache_eph_zbytes_max); - zdfs64("pers_zbytes", S_IRUGO, root, &zcache_pers_zbytes); - zdfs64("pers_zbytes_max", S_IRUGO, root, &zcache_pers_zbytes_max); - return 0; -} -#undef zdebugfs -#undef zdfs64 -#endif - -/* developers can call this in case of ooms, e.g. to find memory leaks */ -void zcache_dump(void) -{ - pr_debug("zcache: obj_count=%u\n", zcache_obj_count); - pr_debug("zcache: obj_count_max=%u\n", zcache_obj_count_max); - pr_debug("zcache: objnode_count=%u\n", zcache_objnode_count); - pr_debug("zcache: objnode_count_max=%u\n", zcache_objnode_count_max); - pr_debug("zcache: flush_total=%u\n", zcache_flush_total); - pr_debug("zcache: flush_found=%u\n", zcache_flush_found); - pr_debug("zcache: flobj_total=%u\n", zcache_flobj_total); - pr_debug("zcache: flobj_found=%u\n", zcache_flobj_found); - pr_debug("zcache: failed_eph_puts=%u\n", zcache_failed_eph_puts); - pr_debug("zcache: failed_pers_puts=%u\n", zcache_failed_pers_puts); - pr_debug("zcache: failed_get_free_pages=%u\n", - zcache_failed_getfreepages); - pr_debug("zcache: failed_alloc=%u\n", zcache_failed_alloc); - pr_debug("zcache: put_to_flush=%u\n", zcache_put_to_flush); - pr_debug("zcache: compress_poor=%u\n", zcache_compress_poor); - pr_debug("zcache: mean_compress_poor=%u\n", - zcache_mean_compress_poor); - pr_debug("zcache: eph_ate_tail=%u\n", zcache_eph_ate_tail); - pr_debug("zcache: eph_ate_tail_failed=%u\n", - zcache_eph_ate_tail_failed); - pr_debug("zcache: pers_ate_eph=%u\n", zcache_pers_ate_eph); - pr_debug("zcache: pers_ate_eph_failed=%u\n", - zcache_pers_ate_eph_failed); - pr_debug("zcache: evicted_eph_zpages=%u\n", zcache_evicted_eph_zpages); - pr_debug("zcache: evicted_eph_pageframes=%u\n", - zcache_evicted_eph_pageframes); - pr_debug("zcache: eph_pageframes=%u\n", zcache_eph_pageframes); - pr_debug("zcache: eph_pageframes_max=%u\n", zcache_eph_pageframes_max); - pr_debug("zcache: pers_pageframes=%u\n", zcache_pers_pageframes); - pr_debug("zcache: pers_pageframes_max=%u\n", - zcache_pers_pageframes_max); - pr_debug("zcache: eph_zpages=%u\n", zcache_eph_zpages); - pr_debug("zcache: eph_zpages_max=%u\n", zcache_eph_zpages_max); - pr_debug("zcache: pers_zpages=%u\n", zcache_pers_zpages); - pr_debug("zcache: pers_zpages_max=%u\n", zcache_pers_zpages_max); - pr_debug("zcache: eph_zbytes=%llu\n", - (unsigned long long)zcache_eph_zbytes); - pr_debug("zcache: eph_zbytes_max=%llu\n", - (unsigned long long)zcache_eph_zbytes_max); - pr_debug("zcache: pers_zbytes=%llu\n", - (unsigned long long)zcache_pers_zbytes); - pr_debug("zcache: pers_zbytes_max=%llu\n", - (unsigned long long)zcache_pers_zbytes_max); -} - /* * zcache core code starts here */ -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/