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[12/12] clocksource: Add some debug info about clocksources being registered

Message ID 1421971767-17707-13-git-send-email-john.stultz@linaro.org
State New
Headers show

Commit Message

John Stultz Jan. 23, 2015, 12:09 a.m. UTC 
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(+)
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Patch

diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index b56f4b9..ec7b552 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -773,6 +773,10 @@  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);