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(parent: 4352346) | patch
ftrace: Only update the function code on write to filter files
authorSteven Rostedt <srostedt@redhat.com>
Sat, 30 Apr 2011 02:35:33 +0000 (22:35 -0400)
committerSteve Conklin <sconklin@canonical.com>
Fri, 15 Jul 2011 17:20:46 +0000 (12:20 -0500)
commit1c7cd8663fdfe757560364490e7b4029144f6f77
treebcfa1481c427dc8f2fc556d61867e16e56658b0etree | snapshot
parent435234656ca01ac6e0023cb5e7bcbebf4e54b17ccommit | diff
ftrace: Only update the function code on write to filter files

BugLink: http://bugs.launchpad.net/bugs/793702

commit 058e297d34a404caaa5ed277de15698d8dc43000 upstream.

If function tracing is enabled, a read of the filter files will
cause the call to stop_machine to update the function trace sites.
It should only call stop_machine on write.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
kernel/trace/ftrace.c diff | blob | history
Port of xen3.3 xenlinux code to Ubuntu Natty kernel