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| author |   David Ahern <dsa@cumulusnetworks.com> | 2016-08-01 13:49:29 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-08-02 10:23:57 +0200 |
| commit | 0d87d7ec22a0879d3926faa4f4f4412a5dee1fba (patch) | |
| tree | 8ee6e51bc056e8e57dc3ffb920c854ac69099290 /tools/perf/tests/tests.h | |
| parent | perf/x86: Modify error message in virtualized environment (diff) | |
| download | linux-dev-0d87d7ec22a0879d3926faa4f4f4412a5dee1fba.tar.xz linux-dev-0d87d7ec22a0879d3926faa4f4f4412a5dee1fba.zip | |
perf/core: Change log level for duration warning to KERN_INFO
When the perf interrupt handler exceeds a threshold warning messages
are displayed on console:
[12739.31793] perf interrupt took too long (2504 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[71340.165065] perf interrupt took too long (5005 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
Many customers and users are confused by the message wondering if
something is wrong or they need to take action to fix a problem.
Since a user can not do anything to fix the issue, the message is really
more informational than a warning. Adjust the log level accordingly.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1470084569-438-1-git-send-email-dsa@cumulusnetworks.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/tests/tests.h')
0 files changed, 0 insertions, 0 deletions