diff options
| author | Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> | 2012-09-05 23:31:12 +0900 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2012-09-13 22:52:09 -0400 |
| commit | 4b036d54bf849a75d0103b33d92a53f89ecb9315 (patch) | |
| tree | a3951c4c6b585f15e02634993cde58986f848443 /tools/perf/util/scripting-engines/trace-event-perl.c | |
| parent | a5e37863ab31d78faddff15675c89979792bc0bd (diff) | |
kprobes/x86: Fix kprobes to collectly handle IP on ftrace
Current kprobe_ftrace_handler expects regs->ip == ip, but it is
incorrect (originally on x86-64). Actually, ftrace handler sets
regs->ip = ip + MCOUNT_INSN_SIZE.
kprobe_ftrace_handler must take care for that.
Link: http://lkml.kernel.org/r/20120905143112.10329.72069.stgit@localhost.localdomain
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-perl.c')
0 files changed, 0 insertions, 0 deletions