From: Stephane Eranian Date: Wed, 3 Apr 2013 12:21:34 +0000 (+0200) Subject: perf: Add sysfs entry to adjust multiplexing interval per PMU X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~62^2~33 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=62b8563979273424d6ebe9201e34d1acc133ad4f;p=pandora-kernel.git perf: Add sysfs entry to adjust multiplexing interval per PMU This patch adds /sys/device/xxx/perf_event_mux_interval_ms to ajust the multiplexing interval per PMU. The unit is milliseconds. Value has to be >= 1. In the 4th version, we renamed the sysfs file to be more consistent with the other /proc/sys/kernel entries for perf_events. In the 5th version, we handle the reprogramming of the hrtimer using hrtimer_forward_now(). That way, we sync up to new timer value quickly (suggested by Jiri Olsa). Signed-off-by: Stephane Eranian Signed-off-by: Peter Zijlstra Cc: Frederic Weisbecker Cc: Arnaldo Carvalho de Melo Link: http://lkml.kernel.org/r/1364991694-5876-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar --- Reading git-diff-tree failed