diff options
| author | Stephen Boyd <sboyd@codeaurora.org> | 2014-01-10 12:40:46 +1100 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2014-01-10 12:40:46 +1100 |
| commit | 051750c9efa6bada9279e60163fea0657c6aa289 (patch) | |
| tree | 9f796401aef492f138c468b7e17ec29ad9d1fe8e | |
| parent | f81afd4d324c6cff7846dce5887ca09ddac29136 (diff) | |
sched_clock: document 4Mhz vs 1Mhz decision
Bo Shen sent a patch to change this to 1Mhz instead of 4Mhz but according
to Russell King the use of 4Mhz was intentional. Add a comment to this
effect so that others don't try to change the code as well.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Bo Shen <voice.shen@atmel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | kernel/time/sched_clock.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/time/sched_clock.c b/kernel/time/sched_clock.c index 68b799375981..6c1b5343b26c 100644 --- a/kernel/time/sched_clock.c +++ b/kernel/time/sched_clock.c @@ -132,6 +132,10 @@ void __init sched_clock_register(u64 (*read)(void), int bits, clocks_calc_mult_shift(&cd.mult, &cd.shift, rate, NSEC_PER_SEC, 3600); r = rate; + /* + * Use 4MHz instead of 1MHz so that things like 1.832Mhz show as + * 1832Khz + */ if (r >= 4000000) { r /= 1000000; r_unit = 'M'; |