path: root/samples
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authorEric B Munson <emunson@mgebm.net>2011-06-24 12:26:26 -0400
committerIngo Molnar <mingo@elte.hu>2011-07-01 11:06:34 +0200
commit0d6412085b7ff58612af52e51ffa864f0df4b8fd (patch)
treeb0aa2622aa0262b1238b07fad38d76c9c61d6e32 /samples
parentc4794295917ebeda8013b6cb9c8d71ab4f74a1fa (diff)
events: Ensure that timers are updated without requiring read() call
The event tracing infrastructure exposes two timers which should be updated each time the value of the counter is updated. Currently, these counters are only updated when userspace calls read() on the fd associated with an event. This means that counters which are read via the mmap'd page exclusively never have their timers updated. This patch adds ensures that the timers are updated each time the values in the mmap'd page are updated. Signed-off-by: Eric B Munson <emunson@mgebm.net> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1308932786-5111-1-git-send-email-emunson@mgebm.net Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'samples')
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