From: Alexander Kuleshov <kuleshovmail@gmail.com>
To: John Stultz <john.stultz@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org,
Alexander Kuleshov <kuleshovmail@gmail.com>
Subject: [PATCH] clocksource: use clocksource_freq2mult() helper
Date: Wed, 16 Mar 2016 16:21:15 +0600 [thread overview]
Message-ID: <1458123675-20001-1-git-send-email-kuleshovmail@gmail.com> (raw)
which is introduced in the 7aca0c072 commit to simplify calculation of
the mult and shift in the clocks_calc_mult_shift().
Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
---
kernel/time/clocksource.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 56ece14..de57923 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -80,9 +80,7 @@ clocks_calc_mult_shift(u32 *mult, u32 *shift, u32 from, u32 to, u32 maxsec)
* accuracy and fits the maxsec conversion range:
*/
for (sft = 32; sft > 0; sft--) {
- tmp = (u64) to << sft;
- tmp += from / 2;
- do_div(tmp, from);
+ tmp = clocksource_freq2mult(from, sft, to);
if ((tmp >> sftacc) == 0)
break;
}
--
2.8.0.rc2.216.g1477fb2.dirty
next reply other threads:[~2016-03-16 10:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-16 10:21 Alexander Kuleshov [this message]
2016-04-07 22:28 ` John Stultz
2016-04-08 4:55 ` John Stultz
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