| Message ID | 1420850068-27828-11-git-send-email-john.stultz@linaro.org |
|---|---|
| State | New |
| Headers | show |
On Fri, Jan 9, 2015 at 6:02 PM, Stephen Boyd <sboyd@codeaurora.org> wrote: > On 01/09/2015 04:34 PM, John Stultz wrote: >> diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c >> index 9a0b951..c641aa7 100644 >> --- a/kernel/time/clocksource.c >> +++ b/kernel/time/clocksource.c >> @@ -770,6 +770,10 @@ void __clocksource_updatefreq_scale(struct clocksource *cs, u32 scale, u32 freq) >> cs->max_idle_ns = clocks_calc_max_nsecs(cs->mult, cs->shift, >> cs->maxadj, cs->mask, >> &cs->max_cycles); >> + >> + pr_info("clocksource %s: mask: 0x%llx max_cycles: 0x%llx, max_idle_ns: %lld ns\n", >> + cs->name, cs->mask, cs->max_cycles, cs->max_idle_ns); > > Is this intentionally info level? Or was it supposed to be debug level > per $subject? Sorry for not getting back on this sooner. Since this is a one-time-at-bootup message, I think enabling the pr_debug output is a little too finicky for most folks to boot with. So I left it at pr_info. If folks object, I can change it, but it just seems less likely we'd get any useful data if it was so hidden by default. thanks -john -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c index 9a0b951..c641aa7 100644 --- a/kernel/time/clocksource.c +++ b/kernel/time/clocksource.c @@ -770,6 +770,10 @@ void __clocksource_updatefreq_scale(struct clocksource *cs, u32 scale, u32 freq) cs->max_idle_ns = clocks_calc_max_nsecs(cs->mult, cs->shift, cs->maxadj, cs->mask, &cs->max_cycles); + + pr_info("clocksource %s: mask: 0x%llx max_cycles: 0x%llx, max_idle_ns: %lld ns\n", + cs->name, cs->mask, cs->max_cycles, cs->max_idle_ns); + } EXPORT_SYMBOL_GPL(__clocksource_updatefreq_scale);
Print the mask, max_cycles, and max_idle_ns values for clocksources being registered. Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: John Stultz <john.stultz@linaro.org> --- kernel/time/clocksource.c | 4 ++++ 1 file changed, 4 insertions(+)