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authorMasami Hiramatsu <mhiramat@redhat.com>2009-12-15 10:31:35 -0500
committerIngo Molnar <mingo@elte.hu>2009-12-15 20:22:01 +0100
commit411edfe5c1ef02a62ec3be56d3e234dbed71ba20 (patch)
treed18c74915fad63f8e5fbbb300ae6e596fcb677b1 /tools/perf
parentce11a603ae40e0ad32aeb378cff81e3fdaec390d (diff)
downloadblackbird-op-linux-411edfe5c1ef02a62ec3be56d3e234dbed71ba20.tar.gz
blackbird-op-linux-411edfe5c1ef02a62ec3be56d3e234dbed71ba20.zip
perf probe: Show need-dwarf message only if it is really needed
Show need-dwarf message only if the probe is really requires debuginfo analysis. This also use pr_debug for debugging message instead of pr_warning. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@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: 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> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091215153135.17436.99052.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/builtin-probe.c18
-rw-r--r--tools/perf/util/probe-finder.c4
2 files changed, 12 insertions, 10 deletions
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index 919037bc9808..438a7bb101d3 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -261,15 +261,19 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
lseek(fd, SEEK_SET, 0);
ret = find_probepoint(fd, pp);
- if (ret < 0) {
- if (session.need_dwarf)
- die("Could not analyze debuginfo.");
-
- pr_warning("An error occurred in debuginfo analysis. Try to use symbols.\n");
- break;
- }
+ if (ret > 0)
+ continue;
if (ret == 0) /* No error but failed to find probe point. */
die("No probe point found.");
+ /* Error path */
+ if (session.need_dwarf) {
+ if (ret == -ENOENT)
+ pr_warning("No dwarf info found in the vmlinux - please rebuild with CONFIG_DEBUG_INFO=y.\n");
+ die("Could not analyze debuginfo.");
+ }
+ pr_debug("An error occurred in debuginfo analysis."
+ " Try to use symbols.\n");
+ break;
}
close(fd);
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 4585f1d86792..4b852c0d16a5 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -687,10 +687,8 @@ int find_probepoint(int fd, struct probe_point *pp)
struct probe_finder pf = {.pp = pp};
ret = dwarf_init(fd, DW_DLC_READ, 0, 0, &__dw_debug, &__dw_error);
- if (ret != DW_DLV_OK) {
- pr_warning("No dwarf info found in the vmlinux - please rebuild with CONFIG_DEBUG_INFO.\n");
+ if (ret != DW_DLV_OK)
return -ENOENT;
- }
pp->found = 0;
while (++cu_number) {
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