Messages in this thread Patch in this message | | | From | Frederic Weisbecker <> | Subject | [PATCH 8/8] watchdog: Remove hack to make full dynticks working | Date | Tue, 23 Jul 2013 02:31:06 +0200 |
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A perf event can be used without forcing the tick to stay alive if it doesn't use a frequency but a sample period and if it doesn't throttle (raise storm of events).
Since the lockup detector neither use a perf event frequency nor should ever throttle due to its high period, it can now run concurrently with the full dynticks feature.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Cc: Anish Singh <anish198519851985@gmail.com> --- kernel/watchdog.c | 8 -------- 1 files changed, 0 insertions(+), 8 deletions(-)
diff --git a/kernel/watchdog.c b/kernel/watchdog.c index 1241d8c..51c4f34 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -553,14 +553,6 @@ void __init lockup_detector_init(void) { set_sample_period(); -#ifdef CONFIG_NO_HZ_FULL - if (watchdog_user_enabled) { - watchdog_user_enabled = 0; - pr_warning("Disabled lockup detectors by default for full dynticks\n"); - pr_warning("You can reactivate it with 'sysctl -w kernel.watchdog=1'\n"); - } -#endif - if (watchdog_user_enabled) watchdog_enable_all_cpus(); } -- 1.7.5.4
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