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authorJohn Stultz <john.stultz@linaro.org>2012-07-13 01:21:52 -0400
committerThomas Gleixner <tglx@linutronix.de>2012-07-15 10:39:05 +0200
commitfee84c43e6afc42295ae8058cbbef9ea5633926c (patch)
tree4cbc2c945aee74e15e1a08bc86a66c697169b55f /kernel
parent42e71e81f5bb5125ca7c194b5ccf1c93511ff8fb (diff)
downloadlinux-linaro-stable-fee84c43e6afc42295ae8058cbbef9ea5633926c.tar.gz
time: Explicitly use u32 instead of int for shift values
Ingo noted that using a u32 instead of int for shift values would be better to make sure the compiler doesn't unnecessarily use complex signed arithmetic. Signed-off-by: John Stultz <john.stultz@linaro.org> Reviewed-by: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Prarit Bhargava <prarit@redhat.com> Link: http://lkml.kernel.org/r/1342156917-25092-4-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/time/timekeeping.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index c2f12aa87fce..4fd83df0b14d 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -28,7 +28,7 @@ struct timekeeper {
/* NTP adjusted clock multiplier */
u32 mult;
/* The shift value of the current clocksource. */
- int shift;
+ u32 shift;
/* Number of clock cycles in one NTP interval. */
cycle_t cycle_interval;
/* Number of clock shifted nano seconds in one NTP interval. */
@@ -45,7 +45,7 @@ struct timekeeper {
s64 ntp_error;
/* Shift conversion between clock shifted nano seconds and
* ntp shifted nano seconds. */
- int ntp_error_shift;
+ u32 ntp_error_shift;
/* The current time */
struct timespec xtime;
@@ -960,7 +960,7 @@ static void timekeeping_adjust(s64 offset)
*
* Returns the unconsumed cycles.
*/
-static cycle_t logarithmic_accumulation(cycle_t offset, int shift)
+static cycle_t logarithmic_accumulation(cycle_t offset, u32 shift)
{
u64 nsecps = (u64)NSEC_PER_SEC << timekeeper.shift;
u64 raw_nsecs;