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| author | Steven Rostedt | 2008-05-12 21:20:43 +0200 |
|---|---|---|
| committer | Thomas Gleixner | 2008-05-23 20:33:19 +0200 |
| commit | b0fc494fae96a7089f3651cb451f461c7291244c (patch) | |
| tree | 586412b9ecbd8e3f04e8cd90a31644f94ff3a7d8 /arch | |
| parent | ftrace: dynamic enabling/disabling of function calls (diff) | |
| download | kernel-qcow2-linux-b0fc494fae96a7089f3651cb451f461c7291244c.tar.gz kernel-qcow2-linux-b0fc494fae96a7089f3651cb451f461c7291244c.tar.xz kernel-qcow2-linux-b0fc494fae96a7089f3651cb451f461c7291244c.zip | |
ftrace: add ftrace_enabled sysctl to disable mcount function
This patch adds back the sysctl ftrace_enabled. This time it is
defaulted to on, if DYNAMIC_FTRACE is configured. When ftrace_enabled
is disabled, the ftrace function is set to the stub return.
If DYNAMIC_FTRACE is also configured, on ftrace_enabled = 0,
the registered ftrace functions will all be set to jmps, but no more
new calls to ftrace recording (used to find the ftrace calling sites)
will be called.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions