linux-toradex.git/kernel/trace/latency_hist.c, branch v3.2.9-rt16 Linux kernel for Apalis and Colibri modules latency-hist.patch 2012-03-06T16:17:36+00:00 Carsten Emde C.Emde@osadl.org 2011-07-19T13:03:41+00:00 e0485ebf9f566985853f574fc748262440d0e0a6 This patch provides a recording mechanism to store data of potential sources of system latencies. The recordings separately determine the latency caused by a delayed timer expiration, by a delayed wakeup of the related user space program and by the sum of both. The histograms can be enabled and reset individually. The data are accessible via the debug filesystem. For details please consult Documentation/trace/histograms.txt. Signed-off-by: Carsten Emde <C.Emde@osadl.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 
This patch provides a recording mechanism to store data of potential
sources of system latencies. The recordings separately determine the
latency caused by a delayed timer expiration, by a delayed wakeup of the
related user space program and by the sum of both. The histograms can be
enabled and reset individually. The data are accessible via the debug
filesystem. For details please consult Documentation/trace/histograms.txt.

Signed-off-by: Carsten Emde <C.Emde@osadl.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>