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authorArnaldo Carvalho de Melo <acme@redhat.com>2010-02-20 16:53:13 -0500
committerIngo Molnar <mingo@elte.hu>2010-02-21 11:48:24 -0500
commit10fe12ef631a7e85022ed26304a37f033a6a95b8 (patch)
tree1317aa1a7a293df85158005299adcde107736cb4 /tools/perf
parentf7e7ee36757f68778700cde1aaed89e1d23e59fd (diff)
perf symbols: Fix up map end too on modular kernels with no modules installed
In 2161db9 we stopped failing when not finding modules when asked too, but then the kernel maps (just one, for vmlinux) wasn't having its ->end field correctly set up, so symbols were not being found for the vmlinux map because its range was 0-0. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1266702793-29434-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/util/event.c6
-rw-r--r--tools/perf/util/symbol.c2
2 files changed, 7 insertions, 1 deletions
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index c3831f633dec..9eb7005bc6d6 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -379,6 +379,12 @@ int event__process_mmap(event_t *self, struct perf_session *session)
379 379
380 session->vmlinux_maps[MAP__FUNCTION]->start = self->mmap.start; 380 session->vmlinux_maps[MAP__FUNCTION]->start = self->mmap.start;
381 session->vmlinux_maps[MAP__FUNCTION]->end = self->mmap.start + self->mmap.len; 381 session->vmlinux_maps[MAP__FUNCTION]->end = self->mmap.start + self->mmap.len;
382 /*
383 * Be a bit paranoid here, some perf.data file came with
384 * a zero sized synthesized MMAP event for the kernel.
385 */
386 if (session->vmlinux_maps[MAP__FUNCTION]->end == 0)
387 session->vmlinux_maps[MAP__FUNCTION]->end = ~0UL;
382 388
383 perf_session__set_kallsyms_ref_reloc_sym(session, symbol_name, 389 perf_session__set_kallsyms_ref_reloc_sym(session, symbol_name,
384 self->mmap.pgoff); 390 self->mmap.pgoff);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 6882e9fec2d6..ee9c37efdd36 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1937,7 +1937,7 @@ int map_groups__create_kernel_maps(struct map_groups *self,
1937 return -1; 1937 return -1;
1938 1938
1939 if (symbol_conf.use_modules && map_groups__create_modules(self) < 0) 1939 if (symbol_conf.use_modules && map_groups__create_modules(self) < 0)
1940 return 0; 1940 pr_debug("Problems creating module maps, continuing anyway...\n");
1941 /* 1941 /*
1942 * Now that we have all the maps created, just set the ->end of them: 1942 * Now that we have all the maps created, just set the ->end of them:
1943 */ 1943 */