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authorAlex Shi <alex.shi@linaro.org>2016-09-20 15:18:54 +0800
committerAlex Shi <alex.shi@linaro.org>2016-09-20 15:18:54 +0800
commit5f87c475f82a75e10bc6e249b7471349f1ef1636 (patch)
treedf697b570c923c722b5ba24f502c6abdbb5e05f1 /kernel/time/timekeeping_debug.c
parentd3a1d035ef89cfb89cf6e2128d44b95771f2c7b4 (diff)
parentd2d693d1ba7d93ec7c5db8aca2da29a4c91f6782 (diff)
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
Conflicts: in fs/proc/task_mmu.c: looks like vma_get_anon_name() want have a name for anonymous vma when there is no name used in vma. commit: 586278d78bf The name show is after any other names, so it maybe covered. but anyway, it just a show here.
Diffstat (limited to 'kernel/time/timekeeping_debug.c')
-rw-r--r--kernel/time/timekeeping_debug.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/kernel/time/timekeeping_debug.c b/kernel/time/timekeeping_debug.c
index f6bd65236712..107310a6f36f 100644
--- a/kernel/time/timekeeping_debug.c
+++ b/kernel/time/timekeeping_debug.c
@@ -23,7 +23,9 @@
#include "timekeeping_internal.h"
-static unsigned int sleep_time_bin[32] = {0};
+#define NUM_BINS 32
+
+static unsigned int sleep_time_bin[NUM_BINS] = {0};
static int tk_debug_show_sleep_time(struct seq_file *s, void *data)
{
@@ -69,6 +71,9 @@ late_initcall(tk_debug_sleep_time_init);
void tk_debug_account_sleep_time(struct timespec64 *t)
{
- sleep_time_bin[fls(t->tv_sec)]++;
+ /* Cap bin index so we don't overflow the array */
+ int bin = min(fls(t->tv_sec), NUM_BINS-1);
+
+ sleep_time_bin[bin]++;
}