and also define this extra attribute in the Kconfig entry.
Acked-by: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
drivers/staging/zcache/Kconfig | 8 ++++++++
drivers/staging/zcache/debug.c | 2 +-
drivers/staging/zcache/zcache-main.c | 6 +++---
3 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/zcache/Kconfig b/drivers/staging/zcache/Kconfig
index 7358270..2da6cc4 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 cf19adc..e951c64 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 4b9ee7f..7c0fda4 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);
--
1.8.0.2
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