summaryrefslogtreecommitdiffstats
path: root/tools/perf/util/probe-finder.c
diff options
context:
space:
mode:
authorMasami Hiramatsu <mhiramat@redhat.com>2009-10-27 21:43:10 +0100
committerIngo Molnar <mingo@elte.hu>2009-10-29 08:47:49 +0100
commit253977b0d87fbb793f12b1661a763ae264028ccf (patch)
tree498b07b3eb9726d69d7495a523a1e3c81e74bc97 /tools/perf/util/probe-finder.c
parentperf/probes: Improve command-line option of perf-probe (diff)
downloadlinux-253977b0d87fbb793f12b1661a763ae264028ccf.tar.xz
linux-253977b0d87fbb793f12b1661a763ae264028ccf.zip
perf/probes: Improve probe point syntax of perf-probe
This changes probe point syntax of perf-probe as below <SRC>[:ABS_LN] [ARGS] or <FUNC>[+OFFS|%return][@SRC] [ARGS] And event name and event group name are automatically generated based on probe-symbol and offset as below. perfprobes/SYMBOL_OFFSET[_NUM] Where SYMBOL is the probing symbol and OFFSET is the byte offset from the symbol. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> LKML-Reference: <20091027204310.30545.84984.stgit@harusame> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/probe-finder.c')
-rw-r--r--tools/perf/util/probe-finder.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index b98d35ef7116..6d3bac9f9473 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -483,10 +483,20 @@ static void show_probepoint(Dwarf_Die sp_die, Dwarf_Signed offs,
if (ret == DW_DLV_OK) {
ret = snprintf(tmp, MAX_PROBE_BUFFER, "%s+%u", name,
(unsigned int)offs);
+ /* Copy the function name if possible */
+ if (!pp->function) {
+ pp->function = strdup(name);
+ pp->offset = offs;
+ }
dwarf_dealloc(__dw_debug, name, DW_DLA_STRING);
} else {
/* This function has no name. */
ret = snprintf(tmp, MAX_PROBE_BUFFER, "0x%llx", pf->addr);
+ if (!pp->function) {
+ /* TODO: Use _stext */
+ pp->function = strdup("");
+ pp->offset = (int)pf->addr;
+ }
}
DIE_IF(ret < 0);
DIE_IF(ret >= MAX_PROBE_BUFFER);