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| author |   Ingo Molnar <mingo@kernel.org> | 2017-11-07 10:30:18 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-11-07 10:30:18 +0100 |
| commit | 15bcdc9477b03eb035052412c3a087e11e855e76 (patch) | |
| tree | e1e3c1f2b89e3a705d1737d61a4d8a9394a1930e /tools/perf/util/annotate.c | |
| parent | Merge tag 'perf-core-for-mingo-4.15-20171103' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (diff) | |
| parent | Merge branch 'for-4.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq (diff) | |
| download | linux-dev-15bcdc9477b03eb035052412c3a087e11e855e76.tar.xz linux-dev-15bcdc9477b03eb035052412c3a087e11e855e76.zip | |
Merge branch 'linus' into perf/core, to fix conflicts
Conflicts:
tools/perf/arch/arm/annotate/instructions.c
tools/perf/arch/arm64/annotate/instructions.c
tools/perf/arch/powerpc/annotate/instructions.c
tools/perf/arch/s390/annotate/instructions.c
tools/perf/arch/x86/tests/intel-cqm.c
tools/perf/ui/tui/progress.c
tools/perf/util/zlib.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/util/annotate.c')
| -rw-r--r-- | tools/perf/util/annotate.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 08164162c345..da1c4c4a0dd8 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -605,9 +605,19 @@ static struct arch *arch__find(const char *name) int symbol__alloc_hist(struct symbol *sym) { struct annotation *notes = symbol__annotation(sym); - const size_t size = symbol__size(sym); + size_t size = symbol__size(sym); size_t sizeof_sym_hist; + /* + * Add buffer of one element for zero length symbol. + * When sample is taken from first instruction of + * zero length symbol, perf still resolves it and + * shows symbol name in perf report and allows to + * annotate it. + */ + if (size == 0) + size = 1; + /* Check for overflow when calculating sizeof_sym_hist */ if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry)) return -1; |