This patch enables these functions to be wrapped and can disable/enable this with CONFIG_DEBUG_FS.
Signed-off-by: Wanpeng Li <[email protected]> --- drivers/staging/zcache/ramster/ramster.c | 32 ++++++++++++++++++------------ 1 file changed, 19 insertions(+), 13 deletions(-) diff --git a/drivers/staging/zcache/ramster/ramster.c b/drivers/staging/zcache/ramster/ramster.c index b60e884..c3d7f96 100644 --- a/drivers/staging/zcache/ramster/ramster.c +++ b/drivers/staging/zcache/ramster/ramster.c @@ -73,6 +73,10 @@ static inline void inc_ramster_flnodes(void) if (ramster_flnodes > ramster_flnodes_max) ramster_flnodes_max = ramster_flnodes; } +static inline void dec_ramster_flnodes(void) +{ + ramster_flnodes = atomic_dec_return(&ramster_flnodes_atomic); +} static ssize_t ramster_foreign_eph_pages; static atomic_t ramster_foreign_eph_pages_atomic = ATOMIC_INIT(0); static ssize_t ramster_foreign_eph_pages_max; @@ -83,6 +87,11 @@ static inline void inc_ramster_foreign_eph_pages(void) if (ramster_foreign_eph_pages > ramster_foreign_eph_pages_max) ramster_foreign_eph_pages_max = ramster_foreign_eph_pages; } +static inline void dec_ramster_foreign_eph_pages(void) +{ + ramster_foreign_eph_pages = atomic_dec_return( + &ramster_foreign_eph_pages_atomic); +} static ssize_t ramster_foreign_pers_pages; static atomic_t ramster_foreign_pers_pages_atomic = ATOMIC_INIT(0); static ssize_t ramster_foreign_pers_pages_max; @@ -93,6 +102,11 @@ static inline void inc_ramster_foreign_pers_pages(void) if (ramster_foreign_pers_pages > ramster_foreign_pers_pages_max) ramster_foreign_pers_pages_max = ramster_foreign_pers_pages; } +static inline void dec_ramster_foreign_pers_pages(void) +{ + ramster_foreign_pers_pages = atomic_dec_return( + &ramster_foreign_pers_pages_atomic); +} static ssize_t ramster_eph_pages_remoted; static ssize_t ramster_pers_pages_remoted; static ssize_t ramster_eph_pages_remote_failed; @@ -188,10 +202,8 @@ static struct flushlist_node *ramster_flnode_alloc(struct tmem_pool *pool) static void ramster_flnode_free(struct flushlist_node *flnode, struct tmem_pool *pool) { - int flnodes; - - flnodes = atomic_dec_return(&ramster_flnodes_atomic); - BUG_ON(flnodes < 0); + dec_ramster_flnodes(); + BUG_ON(ramster_flnodes < 0); kmem_cache_free(ramster_flnode_cache, flnode); } @@ -484,26 +496,20 @@ void *ramster_pampd_free(void *pampd, struct tmem_pool *pool, void ramster_count_foreign_pages(bool eph, int count) { - int c; - BUG_ON(count != 1 && count != -1); if (eph) { if (count > 0) { inc_ramster_foreign_eph_pages(); } else { - c = atomic_dec_return(&ramster_foreign_eph_pages_atomic); - WARN_ON_ONCE(c < 0); + dec_ramster_foreign_eph_pages(); + WARN_ON_ONCE(ramster_foreign_eph_pages < 0); } - ramster_foreign_eph_pages = c; } else { if (count > 0) { inc_ramster_foreign_pers_pages(); } else { - c = atomic_dec_return( - &ramster_foreign_pers_pages_atomic); - WARN_ON_ONCE(c < 0); + WARN_ON_ONCE(ramster_foreign_pers_pages < 0); } - ramster_foreign_pers_pages = c; } } -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
