From af663d75a64d2cc3f18bdb8a29ff4650b9417c16 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Tue, 15 Dec 2009 10:32:18 -0500 Subject: perf probe: Support event name for --add option Support event name syntax for --add option. This allows users to specify event name for each new event. The --add syntax is: perf probe --add '[EVENT=]SRC:LINE ARGS' or perf probe --add '[EVENT=]FUNC[+OFFS|%return|:RLN][@SRC] ARGS' e.g. ./perf probe --add myprobe1=schedule Note: currently group name is not supported yet, because it can cause name-space confliction with other tracepoint/ hw-breakpoint events. Signed-off-by: Masami Hiramatsu Cc: Paul Mackerras Cc: Arnaldo Carvalho de Melo Cc: Steven Rostedt Cc: Jim Keniston Cc: Ananth N Mavinakayanahalli Cc: Christoph Hellwig Cc: Frank Ch. Eigler Cc: Jason Baron Cc: K.Prasad Cc: Peter Zijlstra Cc: Srikar Dronamraju Cc: systemtap Cc: DLE Cc: Frederic Weisbecker LKML-Reference: <20091215153218.17436.84675.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Ingo Molnar --- tools/perf/Documentation/perf-probe.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tools/perf/Documentation/perf-probe.txt') diff --git a/tools/perf/Documentation/perf-probe.txt b/tools/perf/Documentation/perf-probe.txt index 8fa6bf99fcb5..250e391b4bc8 100644 --- a/tools/perf/Documentation/perf-probe.txt +++ b/tools/perf/Documentation/perf-probe.txt @@ -49,8 +49,9 @@ PROBE SYNTAX ------------ Probe points are defined by following syntax. - "FUNC[+OFFS|:RLN|%return][@SRC]|SRC:ALN [ARG ...]" + "[EVENT=]FUNC[+OFFS|:RLN|%return][@SRC]|SRC:ALN [ARG ...]" +'EVENT' specifies the name of new event, if omitted, it will be set the name of the probed function. Currently, event group name is set as 'probe'. 'FUNC' specifies a probed function name, and it may have one of the following options; '+OFFS' is the offset from function entry address in bytes, 'RLN' is the relative-line number from function entry line, and '%return' means that it probes function return. In addition, 'SRC' specifies a source file which has that function. It is also possible to specify a probe point by the source line number by using 'SRC:ALN' syntax, where 'SRC' is the source file path and 'ALN' is the line number. 'ARG' specifies the arguments of this probe point. You can use the name of local variable, or kprobe-tracer argument format (e.g. $retval, %ax, etc). -- cgit v1.2.3