From: Wanpeng Li <liwanp@linux.vnet.ibm.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Dan Magenheimer <dan.magenheimer@oracle.com>,
Seth Jennings <sjenning@linux.vnet.ibm.com>,
Konrad Rzeszutek Wilk <konrad@darnok.org>,
Minchan Kim <minchan@kernel.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Wanpeng Li <liwanp@linux.vnet.ibm.com>
Subject: [PATCH v4 6/8] staging: zcache: fix static variables defined in debug.h but used in mutiple C files
Date: Tue, 19 Mar 2013 17:25:48 +0800 [thread overview]
Message-ID: <1363685150-18303-7-git-send-email-liwanp@linux.vnet.ibm.com> (raw)
In-Reply-To: <1363685150-18303-1-git-send-email-liwanp@linux.vnet.ibm.com>
After commit 95bdaee214 ("zcache: Move debugfs code out of zcache-main.c file")
be merged, most of knods in zcache debugfs just export zero since these variables
are defined in debug.h but use in multiple C files zcache-main.c and debug.c, in
this case variables can't be treated as shared variables.
Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
---
drivers/staging/zcache/debug.h | 62 +++++++++++++++++-----------------
drivers/staging/zcache/zcache-main.c | 31 +++++++++++++++++
2 files changed, 62 insertions(+), 31 deletions(-)
diff --git a/drivers/staging/zcache/debug.h b/drivers/staging/zcache/debug.h
index 4bbe49b..8ec82d4 100644
--- a/drivers/staging/zcache/debug.h
+++ b/drivers/staging/zcache/debug.h
@@ -3,9 +3,9 @@
#ifdef CONFIG_ZCACHE_DEBUG
/* we try to keep these statistics SMP-consistent */
-static ssize_t zcache_obj_count;
+extern ssize_t zcache_obj_count;
static atomic_t zcache_obj_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_obj_count_max;
+extern ssize_t zcache_obj_count_max;
static inline void inc_zcache_obj_count(void)
{
zcache_obj_count = atomic_inc_return(&zcache_obj_atomic);
@@ -17,9 +17,9 @@ static inline void dec_zcache_obj_count(void)
zcache_obj_count = atomic_dec_return(&zcache_obj_atomic);
BUG_ON(zcache_obj_count < 0);
};
-static ssize_t zcache_objnode_count;
+extern ssize_t zcache_objnode_count;
static atomic_t zcache_objnode_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_objnode_count_max;
+extern ssize_t zcache_objnode_count_max;
static inline void inc_zcache_objnode_count(void)
{
zcache_objnode_count = atomic_inc_return(&zcache_objnode_atomic);
@@ -31,9 +31,9 @@ static inline void dec_zcache_objnode_count(void)
zcache_objnode_count = atomic_dec_return(&zcache_objnode_atomic);
BUG_ON(zcache_objnode_count < 0);
};
-static u64 zcache_eph_zbytes;
+extern u64 zcache_eph_zbytes;
static atomic_long_t zcache_eph_zbytes_atomic = ATOMIC_INIT(0);
-static u64 zcache_eph_zbytes_max;
+extern u64 zcache_eph_zbytes_max;
static inline void inc_zcache_eph_zbytes(unsigned clen)
{
zcache_eph_zbytes = atomic_long_add_return(clen, &zcache_eph_zbytes_atomic);
@@ -46,7 +46,7 @@ static inline void dec_zcache_eph_zbytes(unsigned zsize)
};
extern u64 zcache_pers_zbytes;
static atomic_long_t zcache_pers_zbytes_atomic = ATOMIC_INIT(0);
-static u64 zcache_pers_zbytes_max;
+extern u64 zcache_pers_zbytes_max;
static inline void inc_zcache_pers_zbytes(unsigned clen)
{
zcache_pers_zbytes = atomic_long_add_return(clen, &zcache_pers_zbytes_atomic);
@@ -59,7 +59,7 @@ static inline void dec_zcache_pers_zbytes(unsigned zsize)
}
extern ssize_t zcache_eph_pageframes;
static atomic_t zcache_eph_pageframes_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_eph_pageframes_max;
+extern ssize_t zcache_eph_pageframes_max;
static inline void inc_zcache_eph_pageframes(void)
{
zcache_eph_pageframes = atomic_inc_return(&zcache_eph_pageframes_atomic);
@@ -72,7 +72,7 @@ static inline void dec_zcache_eph_pageframes(void)
};
extern ssize_t zcache_pers_pageframes;
static atomic_t zcache_pers_pageframes_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_pers_pageframes_max;
+extern ssize_t zcache_pers_pageframes_max;
static inline void inc_zcache_pers_pageframes(void)
{
zcache_pers_pageframes = atomic_inc_return(&zcache_pers_pageframes_atomic);
@@ -83,21 +83,21 @@ static inline void dec_zcache_pers_pageframes(void)
{
zcache_pers_pageframes = atomic_dec_return(&zcache_pers_pageframes_atomic);
}
-static ssize_t zcache_pageframes_alloced;
+extern ssize_t zcache_pageframes_alloced;
static atomic_t zcache_pageframes_alloced_atomic = ATOMIC_INIT(0);
static inline void inc_zcache_pageframes_alloced(void)
{
zcache_pageframes_alloced = atomic_inc_return(&zcache_pageframes_alloced_atomic);
};
-static ssize_t zcache_pageframes_freed;
+extern ssize_t zcache_pageframes_freed;
static atomic_t zcache_pageframes_freed_atomic = ATOMIC_INIT(0);
static inline void inc_zcache_pageframes_freed(void)
{
zcache_pageframes_freed = atomic_inc_return(&zcache_pageframes_freed_atomic);
}
-static ssize_t zcache_eph_zpages;
+extern ssize_t zcache_eph_zpages;
static atomic_t zcache_eph_zpages_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_eph_zpages_max;
+extern ssize_t zcache_eph_zpages_max;
static inline void inc_zcache_eph_zpages(void)
{
zcache_eph_zpages = atomic_inc_return(&zcache_eph_zpages_atomic);
@@ -110,7 +110,7 @@ static inline void dec_zcache_eph_zpages(unsigned zpages)
}
extern ssize_t zcache_pers_zpages;
static atomic_t zcache_pers_zpages_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_pers_zpages_max;
+extern ssize_t zcache_pers_zpages_max;
static inline void inc_zcache_pers_zpages(void)
{
zcache_pers_zpages = atomic_inc_return(&zcache_pers_zpages_atomic);
@@ -130,23 +130,23 @@ static inline unsigned long curr_pageframes_count(void)
atomic_read(&zcache_pers_pageframes_atomic);
};
/* but for the rest of these, counting races are ok */
-static ssize_t zcache_flush_total;
-static ssize_t zcache_flush_found;
-static ssize_t zcache_flobj_total;
-static ssize_t zcache_flobj_found;
-static ssize_t zcache_failed_eph_puts;
-static ssize_t zcache_failed_pers_puts;
-static ssize_t zcache_failed_getfreepages;
-static ssize_t zcache_failed_alloc;
-static ssize_t zcache_put_to_flush;
-static ssize_t zcache_compress_poor;
-static ssize_t zcache_mean_compress_poor;
-static ssize_t zcache_eph_ate_tail;
-static ssize_t zcache_eph_ate_tail_failed;
-static ssize_t zcache_pers_ate_eph;
-static ssize_t zcache_pers_ate_eph_failed;
-static ssize_t zcache_evicted_eph_zpages;
-static ssize_t zcache_evicted_eph_pageframes;
+extern ssize_t zcache_flush_total;
+extern ssize_t zcache_flush_found;
+extern ssize_t zcache_flobj_total;
+extern ssize_t zcache_flobj_found;
+extern ssize_t zcache_failed_eph_puts;
+extern ssize_t zcache_failed_pers_puts;
+extern ssize_t zcache_failed_getfreepages;
+extern ssize_t zcache_failed_alloc;
+extern ssize_t zcache_put_to_flush;
+extern ssize_t zcache_compress_poor;
+extern ssize_t zcache_mean_compress_poor;
+extern ssize_t zcache_eph_ate_tail;
+extern ssize_t zcache_eph_ate_tail_failed;
+extern ssize_t zcache_pers_ate_eph;
+extern ssize_t zcache_pers_ate_eph_failed;
+extern ssize_t zcache_evicted_eph_zpages;
+extern ssize_t zcache_evicted_eph_pageframes;
extern ssize_t zcache_last_active_file_pageframes;
extern ssize_t zcache_last_inactive_file_pageframes;
diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging/zcache/zcache-main.c
index 892e97e..d1118f0 100644
--- a/drivers/staging/zcache/zcache-main.c
+++ b/drivers/staging/zcache/zcache-main.c
@@ -145,6 +145,37 @@ ssize_t zcache_pers_zpages;
u64 zcache_pers_zbytes;
ssize_t zcache_eph_pageframes;
ssize_t zcache_pers_pageframes;
+ssize_t zcache_obj_count;
+ssize_t zcache_obj_count_max;
+ssize_t zcache_objnode_count;
+ssize_t zcache_objnode_count_max;
+u64 zcache_eph_zbytes;
+u64 zcache_eph_zbytes_max;
+u64 zcache_pers_zbytes_max;
+ssize_t zcache_eph_pageframes_max;
+ssize_t zcache_pers_pageframes_max;
+ssize_t zcache_pageframes_alloced;
+ssize_t zcache_pageframes_freed;
+ssize_t zcache_eph_zpages;
+ssize_t zcache_eph_zpages_max;
+ssize_t zcache_pers_zpages_max;
+ssize_t zcache_flush_total;
+ssize_t zcache_flush_found;
+ssize_t zcache_flobj_total;
+ssize_t zcache_flobj_found;
+ssize_t zcache_failed_eph_puts;
+ssize_t zcache_failed_pers_puts;
+ssize_t zcache_failed_getfreepages;
+ssize_t zcache_failed_alloc;
+ssize_t zcache_put_to_flush;
+ssize_t zcache_compress_poor;
+ssize_t zcache_mean_compress_poor;
+ssize_t zcache_eph_ate_tail;
+ssize_t zcache_eph_ate_tail_failed;
+ssize_t zcache_pers_ate_eph;
+ssize_t zcache_pers_ate_eph_failed;
+ssize_t zcache_evicted_eph_zpages;
+ssize_t zcache_evicted_eph_pageframes;
/* Used by this code. */
ssize_t zcache_last_active_file_pageframes;
--
1.7.7.6
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2013-03-19 9:26 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-19 9:25 [PATCH v4 0/8] staging: zcache: Support zero-filled pages more efficiently Wanpeng Li
2013-03-19 9:25 ` [PATCH v4 1/8] staging: zcache: introduce zero-filled pages handler Wanpeng Li
2013-03-23 19:31 ` Geert Uytterhoeven
2013-03-19 9:25 ` [PATCH v4 2/8] staging: zcache: zero-filled pages awareness Wanpeng Li
2013-03-20 10:30 ` Bob Liu
2013-03-20 10:43 ` Wanpeng Li
2013-03-20 10:43 ` Wanpeng Li
2013-03-19 9:25 ` [PATCH v4 3/8] staging: zcache: handle zcache_[eph|pers]_zpages for zero-filled page Wanpeng Li
2013-03-19 9:25 ` [PATCH v4 4/8] staging: zcache: fix pers_pageframes|_max aren't exported in debugfs Wanpeng Li
2013-03-19 9:25 ` [PATCH v4 5/8] staging: zcache: fix zcache writeback " Wanpeng Li
2013-03-19 9:25 ` Wanpeng Li [this message]
2013-03-19 9:25 ` [PATCH v4 7/8] staging: zcache: introduce zero-filled page stat count Wanpeng Li
2013-03-19 9:25 ` [PATCH v4 8/8] staging: zcache: clean TODO list Wanpeng Li
2013-03-19 23:34 ` [PATCH v4 0/8] staging: zcache: Support zero-filled pages more efficiently Ric Mason
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1363685150-18303-7-git-send-email-liwanp@linux.vnet.ibm.com \
--to=liwanp@linux.vnet.ibm.com \
--cc=akpm@linux-foundation.org \
--cc=dan.magenheimer@oracle.com \
--cc=gregkh@linuxfoundation.org \
--cc=konrad@darnok.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=minchan@kernel.org \
--cc=sjenning@linux.vnet.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).