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| author |   Adrian Hunter <adrian.hunter@intel.com> | 2020-05-12 15:19:19 +0300 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-07-10 08:30:25 -0300 |
| commit | 789e24199810dcd64106ac7b703ea463693e780c (patch) | |
| tree | 960d7ce3fca1dc681bdef4725b646eabe5617140 /tools/perf/util/dso.c | |
| parent | perf tools: Add support for PERF_RECORD_TEXT_POKE (diff) | |
| download | linux-dev-789e24199810dcd64106ac7b703ea463693e780c.tar.xz linux-dev-789e24199810dcd64106ac7b703ea463693e780c.zip | |
perf tools: Add support for PERF_RECORD_KSYMBOL_TYPE_OOL
PERF_RECORD_KSYMBOL_TYPE_OOL marks an executable page. Create a map
backed only by memory, which will be populated as necessary by text poke
events.
Committer notes:
From the patch:
OOL stands for "Out of line" code such as kprobe-replaced instructions
or optimized kprobes or ftrace trampolines.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: x86@kernel.org
Link: http://lore.kernel.org/lkml/20200512121922.8997-13-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/dso.c')
| -rw-r--r-- | tools/perf/util/dso.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 99f0a39c3c59..be991cbbe9f8 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -208,6 +208,7 @@ int dso__read_binary_type_filename(const struct dso *dso, case DSO_BINARY_TYPE__JAVA_JIT: case DSO_BINARY_TYPE__BPF_PROG_INFO: case DSO_BINARY_TYPE__BPF_IMAGE: + case DSO_BINARY_TYPE__OOL: case DSO_BINARY_TYPE__NOT_FOUND: ret = -1; break; @@ -898,6 +899,8 @@ static struct dso_cache *dso_cache__populate(struct dso *dso, if (dso->binary_type == DSO_BINARY_TYPE__BPF_PROG_INFO) *ret = bpf_read(dso, cache_offset, cache->data); + else if (dso->binary_type == DSO_BINARY_TYPE__OOL) + *ret = DSO__DATA_CACHE_SIZE; else *ret = file_read(dso, machine, cache_offset, cache->data); |