ftrace: freeze kprobe'd records

Browse source

Let records identified as being kprobe'd be marked as "frozen". The trouble
with records which have a kprobe installed on their mcount call-site is
that they don't get updated. So if such a function which is currently being
traced gets its tracing disabled due to a new filter rule (or because it
was added to the notrace list) then it won't be updated and continue being
traced. This patch allows scanning of all frozen records during tracing to
check if they should be traced.

Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Abhishek Sagar 2008-06-21 23:47:53 +05:30 • committed by Ingo Molnar

parent 785656a41f

commit ecea656d1d

3 changed files with 79 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

include/linux/ftrace.h

View file

72

kernel/trace/ftrace.c

View file

3

kernel/trace/trace.c

View file