From: Konrad Rzeszutek Wilk Date: Mon, 4 Mar 2013 18:18:16 +0000 (-0500) Subject: zcache: Move debugfs code out of zcache-main.c file. X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=95bdaee214;p=openwrt%2Fstaging%2Fblogic.git zcache: Move debugfs code out of zcache-main.c file. Note that at this point there is no CONFIG_ZCACHE_DEBUG option in the Kconfig. So in effect all of the counters are nop until that option gets re-introduced in: zcache/debug: Coalesce all debug under CONFIG_ZCACHE_DEBUG Acked-by: Dan Magenheimer [v1: Fixed conflicts due to rebase] Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/zcache/Makefile b/drivers/staging/zcache/Makefile index 471104957dad..24fd6aa23817 100644 --- a/drivers/staging/zcache/Makefile +++ b/drivers/staging/zcache/Makefile @@ -1,4 +1,5 @@ zcache-y := zcache-main.o tmem.o zbud.o +zcache-$(CONFIG_ZCACHE_DEBUG) += debug.o zcache-$(CONFIG_RAMSTER) += ramster/ramster.o ramster/r2net.o zcache-$(CONFIG_RAMSTER) += ramster/nodemanager.o ramster/tcp.o zcache-$(CONFIG_RAMSTER) += ramster/heartbeat.o ramster/masklog.o diff --git a/drivers/staging/zcache/debug.c b/drivers/staging/zcache/debug.c new file mode 100644 index 000000000000..622d5f371ff3 --- /dev/null +++ b/drivers/staging/zcache/debug.c @@ -0,0 +1,132 @@ +#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); + zdfs("outstanding_writeback_pages", S_IRUGO, root, + &zcache_outstanding_writeback_pages); + zdfs("writtenback_pages", S_IRUGO, root, &zcache_writtenback_pages); + + 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=%zd\n", zcache_obj_count); + pr_debug("zcache: obj_count_max=%zd\n", zcache_obj_count_max); + pr_debug("zcache: objnode_count=%zd\n", zcache_objnode_count); + pr_debug("zcache: objnode_count_max=%zd\n", zcache_objnode_count_max); + pr_debug("zcache: flush_total=%zd\n", zcache_flush_total); + pr_debug("zcache: flush_found=%zd\n", zcache_flush_found); + pr_debug("zcache: flobj_total=%zd\n", zcache_flobj_total); + pr_debug("zcache: flobj_found=%zd\n", zcache_flobj_found); + pr_debug("zcache: failed_eph_puts=%zd\n", zcache_failed_eph_puts); + pr_debug("zcache: failed_pers_puts=%zd\n", zcache_failed_pers_puts); + pr_debug("zcache: failed_get_free_pages=%zd\n", + zcache_failed_getfreepages); + pr_debug("zcache: failed_alloc=%zd\n", zcache_failed_alloc); + pr_debug("zcache: put_to_flush=%zd\n", zcache_put_to_flush); + pr_debug("zcache: compress_poor=%zd\n", zcache_compress_poor); + pr_debug("zcache: mean_compress_poor=%zd\n", + zcache_mean_compress_poor); + pr_debug("zcache: eph_ate_tail=%zd\n", zcache_eph_ate_tail); + pr_debug("zcache: eph_ate_tail_failed=%zd\n", + zcache_eph_ate_tail_failed); + pr_debug("zcache: pers_ate_eph=%zd\n", zcache_pers_ate_eph); + pr_debug("zcache: pers_ate_eph_failed=%zd\n", + zcache_pers_ate_eph_failed); + pr_debug("zcache: evicted_eph_zpages=%zd\n", zcache_evicted_eph_zpages); + pr_debug("zcache: evicted_eph_pageframes=%zd\n", + zcache_evicted_eph_pageframes); + pr_debug("zcache: eph_pageframes=%zd\n", zcache_eph_pageframes); + pr_debug("zcache: eph_pageframes_max=%zd\n", zcache_eph_pageframes_max); + pr_debug("zcache: pers_pageframes=%zd\n", zcache_pers_pageframes); + pr_debug("zcache: pers_pageframes_max=%zd\n", + zcache_pers_pageframes_max); + pr_debug("zcache: eph_zpages=%zd\n", zcache_eph_zpages); + pr_debug("zcache: eph_zpages_max=%zd\n", zcache_eph_zpages_max); + pr_debug("zcache: pers_zpages=%zd\n", zcache_pers_zpages); + pr_debug("zcache: pers_zpages_max=%zd\n", zcache_pers_zpages_max); + pr_debug("zcache: last_active_file_pageframes=%zd\n", + zcache_last_active_file_pageframes); + pr_debug("zcache: last_inactive_file_pageframes=%zd\n", + zcache_last_inactive_file_pageframes); + pr_debug("zcache: last_active_anon_pageframes=%zd\n", + zcache_last_active_anon_pageframes); + pr_debug("zcache: last_inactive_anon_pageframes=%zd\n", + zcache_last_inactive_anon_pageframes); + pr_debug("zcache: eph_nonactive_puts_ignored=%zd\n", + zcache_eph_nonactive_puts_ignored); + pr_debug("zcache: pers_nonactive_puts_ignored=%zd\n", + zcache_pers_nonactive_puts_ignored); + pr_debug("zcache: eph_zbytes=%llu\n", + zcache_eph_zbytes); + pr_debug("zcache: eph_zbytes_max=%llu\n", + zcache_eph_zbytes_max); + pr_debug("zcache: pers_zbytes=%llu\n", + zcache_pers_zbytes); + pr_debug("zcache: pers_zbytes_max=%llu\n", + zcache_pers_zbytes_max); + pr_debug("zcache: outstanding_writeback_pages=%zd\n", + zcache_outstanding_writeback_pages); + pr_debug("zcache: writtenback_pages=%zd\n", zcache_writtenback_pages); +} +#endif diff --git a/drivers/staging/zcache/debug.h b/drivers/staging/zcache/debug.h new file mode 100644 index 000000000000..98dc491021d0 --- /dev/null +++ b/drivers/staging/zcache/debug.h @@ -0,0 +1,187 @@ +#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; +#ifdef CONFIG_ZCACHE_WRITEBACK +extern ssize_t zcache_writtenback_pages; +extern ssize_t zcache_outstanding_writeback_pages; +#endif + +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/zcache/zcache-main.c b/drivers/staging/zcache/zcache-main.c index 366d457a6c7a..9d6cf968513e 100644 --- a/drivers/staging/zcache/zcache-main.c +++ b/drivers/staging/zcache/zcache-main.c @@ -33,6 +33,7 @@ #include "zcache.h" #include "zbud.h" #include "ramster.h" +#include "debug.h" #ifdef CONFIG_RAMSTER static bool ramster_enabled __read_mostly; #else @@ -134,134 +135,13 @@ 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 ssize_t zcache_objnode_count; -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 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 ssize_t zcache_eph_pageframes; -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); -} -static atomic_t zcache_eph_pageframes_atomic = ATOMIC_INIT(0); -static ssize_t zcache_eph_pageframes_max; -static ssize_t zcache_pers_pageframes; -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); -}; -static atomic_t zcache_pers_pageframes_atomic = ATOMIC_INIT(0); -static ssize_t zcache_pers_pageframes_max; -static ssize_t zcache_pageframes_alloced; -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 atomic_t zcache_pageframes_alloced_atomic = ATOMIC_INIT(0); -static ssize_t zcache_pageframes_freed; -static inline void inc_zcache_pageframes_alloced(void) -{ - zcache_pageframes_alloced = atomic_inc_return(&zcache_pageframes_alloced_atomic); -}; -static atomic_t zcache_pageframes_freed_atomic = ATOMIC_INIT(0); -static ssize_t zcache_eph_zpages; -static inline void inc_zcache_pageframes_freed(void) -{ - zcache_pageframes_freed = atomic_inc_return(&zcache_pageframes_freed_atomic); -} -static atomic_t zcache_eph_zpages_atomic = ATOMIC_INIT(0); -static ssize_t zcache_eph_zpages_max; -static ssize_t zcache_pers_zpages; -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); -} -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; @@ -285,138 +165,10 @@ 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_ZCACHE_WRITEBACK static ssize_t zcache_writtenback_pages; static ssize_t zcache_outstanding_writeback_pages; - -#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); - zdfs("outstanding_writeback_pages", S_IRUGO, root, - &zcache_outstanding_writeback_pages); - zdfs("writtenback_pages", S_IRUGO, root, &zcache_writtenback_pages); - 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=%zd\n", zcache_obj_count); - pr_debug("zcache: obj_count_max=%zd\n", zcache_obj_count_max); - pr_debug("zcache: objnode_count=%zd\n", zcache_objnode_count); - pr_debug("zcache: objnode_count_max=%zd\n", zcache_objnode_count_max); - pr_debug("zcache: flush_total=%zd\n", zcache_flush_total); - pr_debug("zcache: flush_found=%zd\n", zcache_flush_found); - pr_debug("zcache: flobj_total=%zd\n", zcache_flobj_total); - pr_debug("zcache: flobj_found=%zd\n", zcache_flobj_found); - pr_debug("zcache: failed_eph_puts=%zd\n", zcache_failed_eph_puts); - pr_debug("zcache: failed_pers_puts=%zd\n", zcache_failed_pers_puts); - pr_debug("zcache: failed_get_free_pages=%zd\n", - zcache_failed_getfreepages); - pr_debug("zcache: failed_alloc=%zd\n", zcache_failed_alloc); - pr_debug("zcache: put_to_flush=%zd\n", zcache_put_to_flush); - pr_debug("zcache: compress_poor=%zd\n", zcache_compress_poor); - pr_debug("zcache: mean_compress_poor=%zd\n", - zcache_mean_compress_poor); - pr_debug("zcache: eph_ate_tail=%zd\n", zcache_eph_ate_tail); - pr_debug("zcache: eph_ate_tail_failed=%zd\n", - zcache_eph_ate_tail_failed); - pr_debug("zcache: pers_ate_eph=%zd\n", zcache_pers_ate_eph); - pr_debug("zcache: pers_ate_eph_failed=%zd\n", - zcache_pers_ate_eph_failed); - pr_debug("zcache: evicted_eph_zpages=%zd\n", zcache_evicted_eph_zpages); - pr_debug("zcache: evicted_eph_pageframes=%zd\n", - zcache_evicted_eph_pageframes); - pr_debug("zcache: eph_pageframes=%zd\n", zcache_eph_pageframes); - pr_debug("zcache: eph_pageframes_max=%zd\n", zcache_eph_pageframes_max); - pr_debug("zcache: pers_pageframes=%zd\n", zcache_pers_pageframes); - pr_debug("zcache: pers_pageframes_max=%zd\n", - zcache_pers_pageframes_max); - pr_debug("zcache: eph_zpages=%zd\n", zcache_eph_zpages); - pr_debug("zcache: eph_zpages_max=%zd\n", zcache_eph_zpages_max); - pr_debug("zcache: pers_zpages=%zd\n", zcache_pers_zpages); - pr_debug("zcache: pers_zpages_max=%zd\n", zcache_pers_zpages_max); - pr_debug("zcache: last_active_file_pageframes=%zd\n", - zcache_last_active_file_pageframes); - pr_debug("zcache: last_inactive_file_pageframes=%zd\n", - zcache_last_inactive_file_pageframes); - pr_debug("zcache: last_active_anon_pageframes=%zd\n", - zcache_last_active_anon_pageframes); - pr_debug("zcache: last_inactive_anon_pageframes=%zd\n", - zcache_last_inactive_anon_pageframes); - pr_debug("zcache: eph_nonactive_puts_ignored=%zd\n", - zcache_eph_nonactive_puts_ignored); - pr_debug("zcache: pers_nonactive_puts_ignored=%zd\n", - zcache_pers_nonactive_puts_ignored); - pr_debug("zcache: eph_zbytes=%llu\n", - zcache_eph_zbytes); - pr_debug("zcache: eph_zbytes_max=%llu\n", - zcache_eph_zbytes_max); - pr_debug("zcache: pers_zbytes=%llu\n", - zcache_pers_zbytes); - pr_debug("zcache: pers_zbytes_max=%llu\n", - zcache_pers_zbytes_max); - pr_debug("zcache: outstanding_writeback_pages=%zd\n", - zcache_outstanding_writeback_pages); - pr_debug("zcache: writtenback_pages=%zd\n", zcache_writtenback_pages); -} - /* * zcache core code starts here */