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| author |   Adrian Hunter <adrian.hunter@intel.com> | 2018-05-22 13:54:37 +0300 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-05-23 10:26:39 -0300 |
| commit | a8ce99b0ee9ad32debad0a9f28d21451ba237cc1 (patch) | |
| tree | abf59e29e80959c9620ea8ecf88097fc59333375 /tools/perf/util/event.c | |
| parent | perf machine: Create maps for x86 PTI entry trampolines (diff) | |
| download | linux-dev-a8ce99b0ee9ad32debad0a9f28d21451ba237cc1.tar.xz linux-dev-a8ce99b0ee9ad32debad0a9f28d21451ba237cc1.zip | |
perf machine: Synthesize and process mmap events for x86 PTI entry trampolines
Like the kernel text, the location of x86 PTI entry trampolines must be
recorded in the perf.data file. Like the kernel, synthesize a mmap event
for that, and add processing for it.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/1526986485-6562-10-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/event.c')
| -rw-r--r-- | tools/perf/util/event.c | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index aafa9878465f..0c8ecf0c78a4 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -88,10 +88,10 @@ static const char *perf_ns__name(unsigned int id) return perf_ns__names[id]; } -static int perf_tool__process_synth_event(struct perf_tool *tool, - union perf_event *event, - struct machine *machine, - perf_event__handler_t process) +int perf_tool__process_synth_event(struct perf_tool *tool, + union perf_event *event, + struct machine *machine, + perf_event__handler_t process) { struct perf_sample synth_sample = { .pid = -1, @@ -888,9 +888,16 @@ int kallsyms__get_function_start(const char *kallsyms_filename, return 0; } -int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, - perf_event__handler_t process, - struct machine *machine) +int __weak perf_event__synthesize_extra_kmaps(struct perf_tool *tool __maybe_unused, + perf_event__handler_t process __maybe_unused, + struct machine *machine __maybe_unused) +{ + return 0; +} + +static int __perf_event__synthesize_kernel_mmap(struct perf_tool *tool, + perf_event__handler_t process, + struct machine *machine) { size_t size; struct map *map = machine__kernel_map(machine); @@ -943,6 +950,19 @@ int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, return err; } +int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, + perf_event__handler_t process, + struct machine *machine) +{ + int err; + + err = __perf_event__synthesize_kernel_mmap(tool, process, machine); + if (err < 0) + return err; + + return perf_event__synthesize_extra_kmaps(tool, process, machine); +} + int perf_event__synthesize_thread_map2(struct perf_tool *tool, struct thread_map *threads, perf_event__handler_t process, |