Messages in this thread | | | Subject | Re: [PATCH 2/2] tracing: syscall_regfunc() should not skip kernel threads | From | Steven Rostedt <> | Date | Tue, 19 Mar 2013 11:36:36 -0400 |
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On Tue, 2013-03-19 at 15:10 +0000, David Howells wrote: > Steven Rostedt <rostedt@goodmis.org> wrote: > > > Why? If we remove the tracepoint from the slowpath and use a table swap, > > then we wouldn't need to use the slowpath at all. > > How are you engineering a table swap? Do you patch the system call code to > change the immediate address loaded or do you put in a level of indirection?
Patching the call site would probably be the easiest method.
We've gotten pretty good at doing that ;-)
-- Steve
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