diff options
| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-07-12 12:19:09 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-07-12 15:20:41 -0300 |
| commit | 1c1a3a4729aae712c55e001e151ef008d030d4a7 (patch) | |
| tree | 62fd90d09b08cf1a48eaa85ea8a21d7b2cc55b5d /tools/perf/util/symbol-elf.c | |
| parent | perf intel-pt-decoder: Avoid checking code drift on busibox's diff (diff) | |
| download | wireguard-linux-1c1a3a4729aae712c55e001e151ef008d030d4a7.tar.xz wireguard-linux-1c1a3a4729aae712c55e001e151ef008d030d4a7.zip | |
perf tools: Add feature detection for gelf_getnote()
That is not present on some libelf implementations, such as the one used
in Alpine Linux: libelf-0.8.13.
This ends up disabling the SDT code, that relies on this function.
One alternative would be to provide an weak fallback implementation or
the open coded variant used by the buildid sysfs notes reading code.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-82lh22ybedy9b9lych8xj12g@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/symbol-elf.c')
| -rw-r--r-- | tools/perf/util/symbol-elf.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 79a6a190f41d..cebf98ec27bc 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -1790,6 +1790,7 @@ void kcore_extract__delete(struct kcore_extract *kce) unlink(kce->extract_filename); } +#ifdef HAVE_GELF_GETNOTE_SUPPORT /** * populate_sdt_note : Parse raw data and identify SDT note * @elf: elf of the opened file @@ -2041,6 +2042,7 @@ int sdt_notes__get_count(struct list_head *start) count++; return count; } +#endif void symbol__elf_init(void) { |