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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-03-04 13:18:20 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-03-05 16:43:10 +0800
commit67e2cba459a3780c283113808a07adea92762f86 (patch)
treeab4a71c1d2a2c9ecdc0ce91369c68777cac1221b
parent1dba904ca9893c9780748e8bda1c2423828faf40 (diff)
downloadlinux-67e2cba459a3780c283113808a07adea92762f86.tar.gz
zcache/debug: Coalesce all debug under CONFIG_ZCACHE_DEBUG
and also define this extra attribute in the Kconfig entry. Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/staging/zcache/Kconfig8
-rw-r--r--drivers/staging/zcache/debug.c2
-rw-r--r--drivers/staging/zcache/zcache-main.c6
3 files changed, 12 insertions, 4 deletions
diff --git a/drivers/staging/zcache/Kconfig b/drivers/staging/zcache/Kconfig
index 73582705e8c..2da6cc444c7 100644
--- a/drivers/staging/zcache/Kconfig
+++ b/drivers/staging/zcache/Kconfig
@@ -10,6 +10,14 @@ config ZCACHE
memory to store clean page cache pages and swap in RAM,
providing a noticeable reduction in disk I/O.
+config ZCACHE_DEBUG
+ bool "Enable debug statistics"
+ depends on DEBUG_FS && ZCACHE
+ default n
+ help
+ This is used to provide an debugfs directory with counters of
+ how zcache is doing. You probably want to set this to 'N'.
+
config RAMSTER
bool "Cross-machine RAM capacity sharing, aka peer-to-peer tmem"
depends on CONFIGFS_FS=y && SYSFS=y && !HIGHMEM && ZCACHE=y
diff --git a/drivers/staging/zcache/debug.c b/drivers/staging/zcache/debug.c
index cf19adc2332..e951c64a13d 100644
--- a/drivers/staging/zcache/debug.c
+++ b/drivers/staging/zcache/debug.c
@@ -1,7 +1,7 @@
#include <linux/atomic.h>
#include "debug.h"
-#ifdef CONFIG_DEBUG_FS
+#ifdef CONFIG_ZCACHE_DEBUG
#include <linux/debugfs.h>
#define ATTR(x) { .name = #x, .val = &zcache_##x, }
diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging/zcache/zcache-main.c
index 4b9ee7f0218..7c0fda4106a 100644
--- a/drivers/staging/zcache/zcache-main.c
+++ b/drivers/staging/zcache/zcache-main.c
@@ -306,7 +306,7 @@ static void zcache_free_page(struct page *page)
max_pageframes = curr_pageframes;
if (curr_pageframes < min_pageframes)
min_pageframes = curr_pageframes;
-#ifdef ZCACHE_DEBUG
+#ifdef CONFIG_ZCACHE_DEBUG
if (curr_pageframes > 2L || curr_pageframes < -2L) {
/* pr_info here */
}
@@ -1774,7 +1774,7 @@ static int __init zcache_init(void)
old_ops = zcache_cleancache_register_ops();
pr_info("%s: cleancache enabled using kernel transcendent "
"memory and compression buddies\n", namestr);
-#ifdef ZCACHE_DEBUG
+#ifdef CONFIG_ZCACHE_DEBUG
pr_info("%s: cleancache: ignorenonactive = %d\n",
namestr, !disable_cleancache_ignore_nonactive);
#endif
@@ -1789,7 +1789,7 @@ static int __init zcache_init(void)
frontswap_tmem_exclusive_gets(true);
pr_info("%s: frontswap enabled using kernel transcendent "
"memory and compression buddies\n", namestr);
-#ifdef ZCACHE_DEBUG
+#ifdef CONFIG_ZCACHE_DEBUG
pr_info("%s: frontswap: excl gets = %d active only = %d\n",
namestr, frontswap_has_exclusive_gets,
!disable_frontswap_ignore_nonactive);