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Commit 93cc39b6 authored by Wanpeng Li's avatar Wanpeng Li Committed by Greg Kroah-Hartman
Browse files

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: default avatarWanpeng Li <liwanp@linux.vnet.ibm.com>
Acked-by: default avatarDan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6706c721

drivers/staging/zcache/ramster/ramster.c

+23 −11
Original line number Diff line number Diff line
@@ -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);