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authorLi Bin <[email protected]>2015-12-06 10:02:57 +0800
committerSteven Rostedt <[email protected]>2015-12-23 14:27:24 -0500
commit5243238ad5c4a58a4d6c095c3318c36a7e18c08b (patch)
tree4de8294f9a782c8423356b08fa3d378a776ca960 /tools/perf/scripts/python/Perf-Trace-Util/lib
parentcbbe12c43d8208b531c7be4d28a69c8137d19f21 (diff)
sh: ftrace: Fix the comments for ftrace_modify_code()
There is no need to worry about module and __init text disappearing case, because that ftrace has a module notifier that is called when a module is being unloaded and before the text goes away and this code grabs the ftrace_lock mutex and removes the module functions from the ftrace list, such that it will no longer do any modifications to that module's text, the update to make functions be traced or not is done under the ftrace_lock mutex as well. And by now, __init section codes should not been modified by ftrace, because it is black listed in recordmcount.c and ignored by ftrace. Link: http://lkml.kernel.org/r/[email protected] Cc: [email protected] Suggested-by: Steven Rostedt <[email protected]> Signed-off-by: Li Bin <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib')
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