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Subject[PATCH 03/10] staging: ramster: Provide accessory functions for counter increase
Date
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>
---
drivers/staging/zcache/ramster/ramster.c | 34 ++++++++++++++++++++----------
1 file changed, 23 insertions(+), 11 deletions(-)

diff --git a/drivers/staging/zcache/ramster/ramster.c b/drivers/staging/zcache/ramster/ramster.c
index 01fc672..b60e884 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);
--
1.7.10.4


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