diff options
| author | John Stultz <john.stultz@linaro.org> | 2012-07-13 01:21:52 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-07-15 10:39:05 +0200 |
| commit | fee84c43e6afc42295ae8058cbbef9ea5633926c (patch) | |
| tree | 4cbc2c945aee74e15e1a08bc86a66c697169b55f | |
| parent | 42e71e81f5bb5125ca7c194b5ccf1c93511ff8fb (diff) | |
| download | linux-fee84c43e6afc42295ae8058cbbef9ea5633926c.tar.bz2 | |
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>
| -rw-r--r-- | kernel/time/timekeeping.c | 6 |
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; |