Merge tag 'perf-core-for-mingo-5.1-20190214' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

perf list:

  Jiri Olsa:

  - Display metric expressions for --details option

perf record:

  Alexey Budankov:

  - Implement --affinity=node|cpu option, leftover, the other patches
    in this kit were already applied.

perf trace:

  Arnaldo Carvalho de Melo:

  - Fix segfaults due to not properly handling negative file descriptor syscall args.

  - Fix segfault related to the 'waitid' 'options' prefix showing logic.

  - Filter out 'gnome-terminal*' if it is a parent of 'perf trace', to reduce the
    syscall feedback loop in system wide sessions.

BPF:

  Song Liu:

  - Silence "Couldn't synthesize bpf events" warning for EPERM.

Build system:

  Arnaldo Carvalho de Melo:

  - Fix the test-all.c feature detection fast path that was broken for
    quite a while leading to longer build times.

Event parsing:

  Jiri Olsa:

  - Fix legacy events symbol separator parsing

cs-etm:

  Mathieu Poirier:

  - Fix some error path return errors and plug some memory leaks.

  - Add proper header file for symbols

  - Remove unused structure fields.

  - Modularize auxtrace_buffer fetch, decoder and packet processing loop.

Vendor events:

  Paul Clarke:

  - Add assorted metrics for the Power8 and Power9 architectures.

perf report:

  Thomas Richter:

  - Add s390 diagnostic sampling descriptor size

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 3fdfbaebd95e..6c3719ac901d 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1656,6 +1656,21 @@ static int parse_clockid(const struct option *opt, const char *str, int unset)
 	return -1;
 }
 
+static int record__parse_affinity(const struct option *opt, const char *str, int unset)
+{
+	struct record_opts *opts = (struct record_opts *)opt->value;
+
+	if (unset || !str)
+		return 0;
+
+	if (!strcasecmp(str, "node"))
+		opts->affinity = PERF_AFFINITY_NODE;
+	else if (!strcasecmp(str, "cpu"))
+		opts->affinity = PERF_AFFINITY_CPU;
+
+	return 0;
+}
+
 static int record__parse_mmap_pages(const struct option *opt,
 				    const char *str,
 				    int unset __maybe_unused)
@@ -1964,6 +1979,9 @@ static struct option __record_options[] = {
 		     &nr_cblocks_default, "n", "Use <n> control blocks in asynchronous trace writing mode (default: 1, max: 4)",
 		     record__aio_parse),
 #endif
+	OPT_CALLBACK(0, "affinity", &record.opts, "node|cpu",
+		     "Set affinity mask of trace reading thread to NUMA node cpu mask or cpu of processed mmap buffer",
+		     record__parse_affinity),
 	OPT_END()
 };