Adds a function for returning the value of a resource counter member,
in a form suitable for use in a cgroup read_uint control file method.
Signed-off-by: Paul Menage <menage@google.com>
---
include/linux/res_counter.h | 1 +
kernel/res_counter.c | 5 +++++
2 files changed, 6 insertions(+)
Index: rescounter-2.6.25-rc2-mm1/include/linux/res_counter.h
===================================================================
--- rescounter-2.6.25-rc2-mm1.orig/include/linux/res_counter.h
+++ rescounter-2.6.25-rc2-mm1/include/linux/res_counter.h
@@ -54,6 +54,7 @@ struct res_counter {
ssize_t res_counter_read(struct res_counter *counter, int member,
const char __user *buf, size_t nbytes, loff_t *pos,
int (*read_strategy)(unsigned long long val, char *s));
+u64 res_counter_read_uint(struct res_counter *counter, int member);
ssize_t res_counter_write(struct res_counter *counter, int member,
const char __user *buf, size_t nbytes, loff_t *pos,
int (*write_strategy)(char *buf, unsigned long long *val));
Index: rescounter-2.6.25-rc2-mm1/kernel/res_counter.c
===================================================================
--- rescounter-2.6.25-rc2-mm1.orig/kernel/res_counter.c
+++ rescounter-2.6.25-rc2-mm1/kernel/res_counter.c
@@ -92,6 +92,11 @@ ssize_t res_counter_read(struct res_coun
pos, buf, s - buf);
}
+u64 res_counter_read_uint(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))
--
--
