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authorIan Munsie <imunsie@au1.ibm.com>2010-12-06 13:37:04 +1100
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-12-06 15:12:34 -0200
commit1437a30aae865d83c7d96e3401f503a73fffe14d (patch)
treea61ca4af883961b41a6e621668fcb029a308df9e /tools
parent9c90a61c7e4286aa5a38b314a2d8f5a1e70b5135 (diff)
downloadop-kernel-dev-1437a30aae865d83c7d96e3401f503a73fffe14d.zip
op-kernel-dev-1437a30aae865d83c7d96e3401f503a73fffe14d.tar.gz
perf hist: Better displaying of unresolved DSOs and symbols
In the event that a DSO has not been identified, just print out [unknown] instead of the instruction pointer as we previously were doing, which is pretty meaningless for a shared object (at least to the users perspective). The IP we print out is fairly meaningless in general anyway - it's just one (the first) of the many addresses that were lumped together as unidentified, and could span many shared objects and symbols. In reality if we see this [unknown] output then the report -D output is going to be more useful anyway as we can see all the different address that it represents. If we are printing the symbols we are still going to see this IP in that column anyway since they shouldn't resolve either. This patch also changes the symbol address printouts so that they print out 0x before the address, are left aligned, and changes the %L format string (which relies on a glibc bug) to %ll. Before: 74.11% :3259 4a6c [k] 4a6c After: 74.11% :3259 [unknown] [k] 0x4a6c Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <1291603026-11785-2-git-send-email-imunsie@au1.ibm.com> Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/sort.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index b62a553..f44fa54 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -170,7 +170,7 @@ static int hist_entry__dso_snprintf(struct hist_entry *self, char *bf,
return repsep_snprintf(bf, size, "%-*s", width, dso_name);
}
- return repsep_snprintf(bf, size, "%*Lx", width, self->ip);
+ return repsep_snprintf(bf, size, "%-*s", width, "[unknown]");
}
/* --sort symbol */
@@ -196,7 +196,7 @@ static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf,
if (verbose) {
char o = self->ms.map ? dso__symtab_origin(self->ms.map->dso) : '!';
- ret += repsep_snprintf(bf, size, "%*Lx %c ",
+ ret += repsep_snprintf(bf, size, "%-#*llx %c ",
BITS_PER_LONG / 4, self->ip, o);
}
@@ -205,7 +205,7 @@ static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf,
ret += repsep_snprintf(bf + ret, size - ret, "%s",
self->ms.sym->name);
else
- ret += repsep_snprintf(bf + ret, size - ret, "%*Lx",
+ ret += repsep_snprintf(bf + ret, size - ret, "%-#*llx",
BITS_PER_LONG / 4, self->ip);
return ret;
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