summaryrefslogtreecommitdiffstats
path: root/drivers/cpuidle/sysfs.c
diff options
context:
space:
mode:
authorYi Yang <yi.y.yang@intel.com>2008-02-25 08:46:12 +0800
committerLen Brown <len.brown@intel.com>2008-03-26 00:45:26 -0400
commit8b78cf602fd3bd97c0080edd22fe8fd5d0fa7832 (patch)
treee5f8d7f74c0c1dbd03af793e0b7cb8fb1c06ccdf /drivers/cpuidle/sysfs.c
parent996520c1fdd2948addb629be56c9febf2967e02b (diff)
downloadop-kernel-dev-8b78cf602fd3bd97c0080edd22fe8fd5d0fa7832.zip
op-kernel-dev-8b78cf602fd3bd97c0080edd22fe8fd5d0fa7832.tar.gz
cpuidle: fix cpuidle time and usage overflow
cpuidle C-state sysfs node time and usage are very easy to overflow because they are all of unsigned int type, time will overflow within about two hours, usage will take longer time to overflow, but they are increasing for ever. This patch will convert them to unsigned long long. Signed-off-by: Yi Yang <yi.y.yang@intel.com> Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/cpuidle/sysfs.c')
-rw-r--r--drivers/cpuidle/sysfs.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index 69102ca..e949618 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers/cpuidle/sysfs.c
@@ -218,6 +218,12 @@ static ssize_t show_state_##_name(struct cpuidle_state *state, char *buf) \
return sprintf(buf, "%u\n", state->_name);\
}
+#define define_show_state_ull_function(_name) \
+static ssize_t show_state_##_name(struct cpuidle_state *state, char *buf) \
+{ \
+ return sprintf(buf, "%llu\n", state->_name);\
+}
+
#define define_show_state_str_function(_name) \
static ssize_t show_state_##_name(struct cpuidle_state *state, char *buf) \
{ \
@@ -228,8 +234,8 @@ static ssize_t show_state_##_name(struct cpuidle_state *state, char *buf) \
define_show_state_function(exit_latency)
define_show_state_function(power_usage)
-define_show_state_function(usage)
-define_show_state_function(time)
+define_show_state_ull_function(usage)
+define_show_state_ull_function(time)
define_show_state_str_function(name)
define_show_state_str_function(desc)
OpenPOWER on IntegriCloud