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authorPaul Menage <menage@google.com>2008-04-29 09:59:58 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-29 17:06:08 +0200
commit2c7eabf37647dd459d555e76954b4de87be2321f (patch)
tree553a080db29ad1d9724e6c7da30f64f5fe7cc12a /kernel
parentCGroup API files: rename read/write_uint methods to read_write_u64 (diff)
downloadlinux-2c7eabf37647dd459d555e76954b4de87be2321f.tar.xz
linux-2c7eabf37647dd459d555e76954b4de87be2321f.zip
CGroup API files: add res_counter_read_u64()
Adds a function for returning the value of a resource counter member, in a form suitable for use in a cgroup read_u64 control file method. Signed-off-by: Paul Menage <menage@google.com> Cc: "Li Zefan" <lizf@cn.fujitsu.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Paul Jackson <pj@sgi.com> Cc: Pavel Emelyanov <xemul@openvz.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: "YAMAMOTO Takashi" <yamamoto@valinux.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/res_counter.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/res_counter.c b/kernel/res_counter.c
index a508c2769463..70587657dda3 100644
--- a/kernel/res_counter.c
+++ b/kernel/res_counter.c
@@ -93,6 +93,11 @@ ssize_t res_counter_read(struct res_counter *counter, int member,
pos, buf, s - buf);
}
+u64 res_counter_read_u64(struct res_counter *counter, int member)
+{
+ return *res_counter_member(counter, member);
+}
+
ssize_t res_counter_write(struct res_counter *counter, int member,
const char __user *userbuf, size_t nbytes, loff_t *pos,
int (*write_strategy)(char *st_buf, unsigned long long *val))