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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2009-11-20 20:51:27 -0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-21 14:11:33 +0100 |
| commit | c338aee853db197e1855b393e6d6cc667784537f (patch) | |
| tree | f97fea21c608a689144302b8dd78ef29bfaa5c88 /tools/perf/builtin-report.c | |
| parent | 78075caad99dc36ec6ef5826b7a5273ea14295fc (diff) | |
| download | linux-c338aee853db197e1855b393e6d6cc667784537f.tar.gz linux-c338aee853db197e1855b393e6d6cc667784537f.tar.bz2 linux-c338aee853db197e1855b393e6d6cc667784537f.zip | |
perf symbols: Do lazy symtab loading for the kernel & modules too
Just like we do with the other DSOs. This also simplifies the
kernel_maps setup process, now all that the tools need to do is
to call kernel_maps__init and the maps for the modules and
kernel will be created, then, later, when
kernel_maps__find_symbol() is used, it will also call
maps__find_symbol that already checks if the symtab was loaded,
loading it if needed.
Now if one does 'perf top --hide_kernel_symbols' we won't pay
the price of loading the (many) symbols in /proc/kallsyms or
vmlinux.
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: <1258757489-5978-4-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/builtin-report.c')
| -rw-r--r-- | tools/perf/builtin-report.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 0af48401f089..0d39e805be2d 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -449,7 +449,7 @@ got_map: * trick of looking in the whole kernel symbol list. */ if ((long long)ip < 0) - return kernel_maps__find_symbol(ip, mapp); + return kernel_maps__find_symbol(ip, mapp, NULL); } dump_printf(" ...... dso: %s\n", map ? map->dso->long_name : "<not found>"); @@ -496,7 +496,7 @@ static struct symbol **resolve_callchain(struct thread *thread, struct map *map, case PERF_CONTEXT_HV: break; case PERF_CONTEXT_KERNEL: - sym = kernel_maps__find_symbol(ip, &map); + sym = kernel_maps__find_symbol(ip, &map, NULL); break; default: sym = resolve_symbol(thread, &map, &ip); @@ -716,7 +716,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) if (cpumode == PERF_RECORD_MISC_KERNEL) { level = 'k'; - sym = kernel_maps__find_symbol(ip, &map); + sym = kernel_maps__find_symbol(ip, &map, NULL); dump_printf(" ...... dso: %s\n", map ? map->dso->long_name : "<not found>"); } else if (cpumode == PERF_RECORD_MISC_USER) { |