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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2010-08-27 20:39:06 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-09-08 11:47:19 -0300
commitaba91595cfcebd193425e20aabc407531526a1c5 (patch)
tree5473ed5aebc93bb0aea03a17d7ed968ca0e95dce /kernel/backtracetest.c
parent367e94c10092469c896a226a77ef13cf6da757e4 (diff)
downloadlinux-aba91595cfcebd193425e20aabc407531526a1c5.tar.bz2
tracing/kprobes: Fix handling of argument names
Set "argN" name for each argument automatically if it has no specified name. Since dynamic trace event(kprobe_events) accepts special characters for its argument, its format can show those special characters (e.g. '$', '%', '+'). However, perf can't parse those format because of the character (especially '%') mess up the format. This sets "argX" name for those arguments if user omitted the argument names. E.g. # echo 'p do_fork %ax IP=%ip $stack' > tracing/kprobe_events # cat tracing/kprobe_events p:kprobes/p_do_fork_0 do_fork arg1=%ax IP=%ip arg3=$stack Reported-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> LKML-Reference: <20100827113906.22882.59312.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'kernel/backtracetest.c')
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