From: John Stultz <john.stultz@linaro.org>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: John Stultz <john.stultz@linaro.org>,
Dave Jones <davej@codemonkey.org.uk>,
Linus Torvalds <torvalds@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Richard Cochran <richardcochran@gmail.com>,
Prarit Bhargava <prarit@redhat.com>,
Stephen Boyd <sboyd@codeaurora.org>,
Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>
Subject: [PATCH 12/12] clocksource: Add some debug info about clocksources being registered
Date: Thu, 22 Jan 2015 16:09:27 -0800 [thread overview]
Message-ID: <1421971767-17707-13-git-send-email-john.stultz@linaro.org> (raw)
In-Reply-To: <1421971767-17707-1-git-send-email-john.stultz@linaro.org>
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(+)
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);
--
1.9.1
next prev parent reply other threads:[~2015-01-23 0:10 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-23 0:09 [PATCH 00/12][RFC] Increased clocksource validation and cleanups (v2) John Stultz
2015-01-23 0:09 ` [PATCH 01/12] clocksource: Simplify clocks_calc_max_nsecs logic John Stultz
2015-01-23 0:09 ` [PATCH 02/12] clocksource: Simplify logic around clocksource wrapping saftey margins John Stultz
2015-01-23 0:09 ` [PATCH 03/12] clocksource: Remove clocksource_max_deferment() John Stultz
2015-01-23 0:09 ` [PATCH 04/12] clocksource: Add max_cycles to clocksource structure John Stultz
2015-01-23 0:09 ` [PATCH 05/12] time: Add debugging checks to warn if we see delays John Stultz
2015-01-23 14:27 ` Peter Zijlstra
2015-01-23 0:09 ` [PATCH 06/12] time: Add infrastructure to cap clocksource reads to the max_cycles value John Stultz
2015-01-23 14:28 ` Peter Zijlstra
2015-01-24 17:35 ` Richard Cochran
2015-01-23 0:09 ` [PATCH 07/12] time: Try to catch clocksource delta underflows John Stultz
2015-01-23 0:09 ` [PATCH 08/12] time: Add warnings when overflows or underflows are observed John Stultz
2015-01-23 14:30 ` Peter Zijlstra
2015-01-23 0:09 ` [PATCH 09/12] clocksource: Improve clocksource watchdog reporting John Stultz
2015-01-23 0:09 ` [PATCH 10/12] clocksource: Mostly kill clocksource_register() John Stultz
2015-01-23 0:09 ` [PATCH 11/12] sparc: Convert to using clocksource_register_hz() John Stultz
2015-01-27 1:18 ` David Miller
2015-01-23 0:09 ` John Stultz [this message]
2015-03-07 2:49 [PATCH 00/12] Increased clocksource validation and cleanups (v3) John Stultz
2015-03-07 2:50 ` [PATCH 12/12] clocksource: Add some debug info about clocksources being registered John Stultz
2015-03-07 9:50 ` Ingo Molnar
2015-03-12 3:16 ` John Stultz
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