From 3f007ca44935b5b4a773bb0bdbb8bb3045bbd6cb Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Mon, 4 Mar 2013 13:18:12 -0500 Subject: zcache: Provide accessory functions for counter increase This is the first step in moving the debugfs code out of the main file in-to another file. And also allow the code to run without CONFIG_DEBUG_FS defined. Acked-by: Dan Magenheimer [v2: Rebase on top staging/zcache: Fix/improve zcache writeback code, tie to a config option] [v3: Rebase on top of zcache: Fix compile warnings due to usage of debugfs_create_size_t] Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Greg Kroah-Hartman --- drivers/staging/zcache/zcache-main.c | 109 +++++++++++++++++++++++------------ 1 file changed, 73 insertions(+), 36 deletions(-) (limited to 'drivers/staging/zcache') diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging/zcache/zcache-main.c index d7dd02cbf80e..a3c5b7dae981 100644 --- a/drivers/staging/zcache/zcache-main.c +++ b/drivers/staging/zcache/zcache-main.c @@ -139,32 +139,87 @@ 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 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 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 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 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 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 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 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 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; +} /* but for the rest of these, counting races are ok */ static ssize_t zcache_flush_total; static ssize_t zcache_flush_found; @@ -422,9 +477,7 @@ static struct tmem_objnode *zcache_objnode_alloc(struct tmem_pool *pool) } } BUG_ON(objnode == NULL); - zcache_objnode_count = atomic_inc_return(&zcache_objnode_atomic); - if (zcache_objnode_count > zcache_objnode_count_max) - zcache_objnode_count_max = zcache_objnode_count; + inc_zcache_objnode_count(); return objnode; } @@ -446,9 +499,7 @@ static struct tmem_obj *zcache_obj_alloc(struct tmem_pool *pool) obj = kp->obj; BUG_ON(obj == NULL); kp->obj = NULL; - zcache_obj_count = atomic_inc_return(&zcache_obj_atomic); - if (zcache_obj_count > zcache_obj_count_max) - zcache_obj_count_max = zcache_obj_count; + inc_zcache_obj_count(); return obj; } @@ -472,8 +523,7 @@ static struct page *zcache_alloc_page(void) struct page *page = alloc_page(ZCACHE_GFP_MASK); if (page != NULL) - zcache_pageframes_alloced = - atomic_inc_return(&zcache_pageframes_alloced_atomic); + inc_zcache_pageframes_alloced(); return page; } @@ -485,8 +535,7 @@ static void zcache_free_page(struct page *page) if (page == NULL) BUG(); __free_page(page); - zcache_pageframes_freed = - atomic_inc_return(&zcache_pageframes_freed_atomic); + inc_zcache_pageframes_freed(); curr_pageframes = zcache_pageframes_alloced - atomic_read(&zcache_pageframes_freed_atomic) - atomic_read(&zcache_eph_pageframes_atomic) - @@ -551,19 +600,11 @@ static void *zcache_pampd_eph_create(char *data, size_t size, bool raw, create_in_new_page: pampd = (void *)zbud_create_prep(th, true, cdata, clen, newpage); BUG_ON(pampd == NULL); - 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; + inc_zcache_eph_pageframes(); got_pampd: - 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; - 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; + inc_zcache_eph_zbytes(clen); + inc_zcache_eph_zpages(); if (ramster_enabled && raw) ramster_count_foreign_pages(true, 1); out: @@ -633,19 +674,11 @@ create_pampd: create_in_new_page: pampd = (void *)zbud_create_prep(th, false, cdata, clen, newpage); BUG_ON(pampd == NULL); - 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; + inc_zcache_pers_pageframes(); got_pampd: - 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; - 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; + inc_zcache_pers_zpages(); + inc_zcache_pers_zbytes(clen); if (ramster_enabled && raw) ramster_count_foreign_pages(false, 1); out: @@ -991,6 +1024,11 @@ out: static atomic_t zcache_outstanding_writeback_pages_atomic = ATOMIC_INIT(0); +static inline void inc_zcache_outstanding_writeback_pages(void) +{ + zcache_outstanding_writeback_pages = + atomic_inc_return(&zcache_outstanding_writeback_pages_atomic); +} static void unswiz(struct tmem_oid oid, u32 index, unsigned *type, pgoff_t *offset); @@ -1120,8 +1158,7 @@ static int zcache_frontswap_writeback_zpage(int type, pgoff_t offset, */ (void)__swap_writepage(page, &wbc, zcache_end_swap_write); page_cache_release(page); - zcache_outstanding_writeback_pages = - atomic_inc_return(&zcache_outstanding_writeback_pages_atomic); + inc_zcache_outstanding_writeback_pages(); return 0; } -- cgit v1.2.3-55-g7522