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perf buildid-cache: Support binary objects from other namespaces

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Teach buildid-cache how to add, remove, and update binary objects from
other mount namespaces.  Allow probe events tracing binaries in
different namespaces to add their objects to the probe and build-id
caches too.  As a handy side effect, this also lets us access SDT probes
in binaries from alternate mount namespaces.

Signed-off-by: Krister Johansen <kjlx@templeofstupid.com>
Tested-by: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas-Mich Richter <tmricht@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1499305693-1599-5-git-send-email-kjlx@templeofstupid.com
[ Add util/namespaces.c to tools/perf/util/python-ext-sources, to fix the python binding 'perf test' ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Krister Johansen
2017-07-05 18:48:11 -07:00
committed by Arnaldo Carvalho de Melo
parent 544abd44c7
commit f045b8c4b3
16 changed files with 160 additions and 63 deletions
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4
tools/perf/tests/sdt.c
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@@ -33,7 +33,7 @@ static int build_id_cache__add_file(const char *filename)
}
build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
err = build_id_cache__add_s(sbuild_id, filename, false, false);
err = build_id_cache__add_s(sbuild_id, filename, NULL, false, false);
if (err < 0)
pr_debug("Failed to add build id cache of %s\n", filename);
return err;
@@ -54,7 +54,7 @@ static char *get_self_path(void)
static int search_cached_probe(const char *target,
const char *group, const char *event)
{
struct probe_cache *cache = probe_cache__new(target);
struct probe_cache *cache = probe_cache__new(target, NULL);
int ret = 0;
if (!cache) {