path: root/tools/perf/Documentation/perf-sched.txt
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authorIngo Molnar <>2009-09-13 17:33:44 +0200
committerIngo Molnar <>2009-09-13 17:33:44 +0200
commit459ec28ab404d7afcd512ce9b855959ad301605a (patch)
tree5c17a0f919242bafffd29cea65a62139a34c2aeb /tools/perf/Documentation/perf-sched.txt
parent1fc35b29b4098aa3bf9fc9acb4c1615d0b5dd95d (diff)
perf_counter: Allow mmap if paranoid checks are turned off
Before: $ perf sched record -f sleep 1 Error: failed to mmap with 1 (Operation not permitted) After: $ perf sched record -f sleep 1 [ perf record: Captured and wrote 0.095 MB (~4161 samples) ] Note, this is only allowed if perfcounter_paranoid is set to the most permissive (non-default) value of -1. Cc: Peter Zijlstra <> Cc: Mike Galbraith <> Cc: Paul Mackerras <> Cc: Arnaldo Carvalho de Melo <> Cc: Frederic Weisbecker <> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <>
Diffstat (limited to 'tools/perf/Documentation/perf-sched.txt')
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