diff options
| author | Wanpeng Li <liwanp@linux.vnet.ibm.com> | 2013-04-10 08:25:53 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-11 13:02:24 -0700 |
| commit | 93cc39b64c492cede5b45232387344f745c61686 (patch) | |
| tree | 63086ed4bcc8b1c7418f82ccd5ebf2dea7fd0282 /drivers/staging/zcache | |
| parent | 6706c721b22aadffbffec7550b81efedddd05cfb (diff) | |
staging: ramster: Provide accessory functions for counter increase
This patch enables these functions to be wrapped and can disable/enable
this with CONFIG_DEBUG_FS.
Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/zcache')
| -rw-r--r-- | drivers/staging/zcache/ramster/ramster.c | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/drivers/staging/zcache/ramster/ramster.c b/drivers/staging/zcache/ramster/ramster.c index 01fc672399f..b60e884d476 100644 --- a/drivers/staging/zcache/ramster/ramster.c +++ b/drivers/staging/zcache/ramster/ramster.c @@ -67,12 +67,32 @@ static int ramster_remote_target_nodenum __read_mostly = -1; static long ramster_flnodes; static atomic_t ramster_flnodes_atomic = ATOMIC_INIT(0); static unsigned long ramster_flnodes_max; +static inline void inc_ramster_flnodes(void) +{ + ramster_flnodes = atomic_inc_return(&ramster_flnodes_atomic); + if (ramster_flnodes > ramster_flnodes_max) + ramster_flnodes_max = ramster_flnodes; +} 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; +static inline void inc_ramster_foreign_eph_pages(void) +{ + ramster_foreign_eph_pages = atomic_inc_return( + &ramster_foreign_eph_pages_atomic); + if (ramster_foreign_eph_pages > ramster_foreign_eph_pages_max) + ramster_foreign_eph_pages_max = ramster_foreign_eph_pages; +} 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; +static inline void inc_ramster_foreign_pers_pages(void) +{ + ramster_foreign_pers_pages = atomic_inc_return( + &ramster_foreign_pers_pages_atomic); + if (ramster_foreign_pers_pages > ramster_foreign_pers_pages_max) + ramster_foreign_pers_pages_max = ramster_foreign_pers_pages; +} static ssize_t ramster_eph_pages_remoted; static ssize_t ramster_pers_pages_remoted; static ssize_t ramster_eph_pages_remote_failed; @@ -159,9 +179,7 @@ static struct flushlist_node *ramster_flnode_alloc(struct tmem_pool *pool) flnode = kp->flnode; BUG_ON(flnode == NULL); kp->flnode = NULL; - ramster_flnodes = atomic_inc_return(&ramster_flnodes_atomic); - if (ramster_flnodes > ramster_flnodes_max) - ramster_flnodes_max = ramster_flnodes; + inc_ramster_flnodes(); return flnode; } @@ -471,10 +489,7 @@ void ramster_count_foreign_pages(bool eph, int count) BUG_ON(count != 1 && count != -1); if (eph) { if (count > 0) { - c = atomic_inc_return( - &ramster_foreign_eph_pages_atomic); - if (c > ramster_foreign_eph_pages_max) - ramster_foreign_eph_pages_max = c; + inc_ramster_foreign_eph_pages(); } else { c = atomic_dec_return(&ramster_foreign_eph_pages_atomic); WARN_ON_ONCE(c < 0); @@ -482,10 +497,7 @@ void ramster_count_foreign_pages(bool eph, int count) ramster_foreign_eph_pages = c; } else { if (count > 0) { - c = atomic_inc_return( - &ramster_foreign_pers_pages_atomic); - if (c > ramster_foreign_pers_pages_max) - ramster_foreign_pers_pages_max = c; + inc_ramster_foreign_pers_pages(); } else { c = atomic_dec_return( &ramster_foreign_pers_pages_atomic); |