tree d89b59d4318eb5e37082f90880ac20b18f81a020
parent 354cc40e3b0981c38ba2ce2964954480e6c03c37
author Knut Petersen <Knut_Petersen@t-online.de> 1380112177 +0200
committer Ingo Molnar <mingo@kernel.org> 1380873967 +0200

perf: Enforce 1 as lower limit for perf_event_max_sample_rate

/proc/sys/kernel/perf_event_max_sample_rate will accept
negative values as well as 0.

Negative values are unreasonable, and 0 causes a
divide by zero exception in perf_proc_update_handler.

This patch enforces a lower limit of 1.

Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5242DB0C.4070005@t-online.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>