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staging: ramster: Provide accessory functions for counter increase

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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>
This commit is contained in:
Wanpeng Li 2013-04-10 08:25:53 +08:00 committed by Greg Kroah-Hartman
parent 6706c721b2
commit 93cc39b64c
1 changed files with 23 additions and 11 deletions
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34
drivers/staging/zcache/ramster/ramster.c
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@ -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);