perf_counter: per user mlock gift

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Instead of a per-process mlock gift for perf-counters, use a
per-user gift so that there is less of a DoS potential.

[ Impact: allow less worst-case unprivileged memory consumption ]

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20090515132018.496182835@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

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Peter Zijlstra 2009-05-15 15:19:27 +02:00 • committed by Ingo Molnar

parent 548e1ddf25

commit 789f90fcf6

2 changed files with 19 additions and 7 deletions

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4

include/linux/sched.h

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22

kernel/perf_counter.c

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