Merge tag 'perf-urgent-for-mingo-4.18-20180625' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

perf bench: (Jiri Olsa):

- Fix NUMA report output code handling of less than 1s runtimes.

perf script: (Ravi Bangoria)

- Add missing output fields in a 'perf script -h' hint.

- Fix crash because of missing evsel->priv.

- Fix crash caused by accessing feat_ops[HEADER_LAST_FEATURE], which
  is just a end of features header marker.

perf stat: (Thomas Richter)

- Remove duplicate event counting

perf test:

- Wire parsing error handling in 'parse events' test (Jiri Olsa)

- Fix 'session topology' test on s/390 (Thomas Richter)

eBPF: (Yonghong Song)

- Fix a clang 7.0 compilation error when building perf linking
  with libclang

intel-pt: (Adrian Hunter)

- Fix packet decoding of CYC packets.

Copies of kernel files: (Arnaldo Carvalho de Melo)

- Synchronize drm/drm.h UAPI

- Update x86's syscall_64.tbl, adding support for 'io_pgetevents' and 'rseq'
  in 'perf trace'.

- Update powerpc uapi/asm/unistd.h, adding support for the 'rseq' syscall.

- Update if_link.h and bpf.h, no effect on tool features.

PowerPC: (Sandipan Das)

- Fix crash if callchain is empty.

s/390: (Thomas Richter)

- Support random socked_id assignment in the perf header.

- Support s390 random socket_id assignment in perf.data file.

- Make PMU alias definitions taken from sysfs and JSON files comparable
  by normalizing them wrt spaces and newlines.

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

1 files changed, 10 insertions, 2 deletions

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 540cd2dcd3e7..653ff65aa2c3 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2129,6 +2129,7 @@ static int process_cpu_topology(struct feat_fd *ff, void *data __maybe_unused)
 	int cpu_nr = ff->ph->env.nr_cpus_avail;
 	u64 size = 0;
 	struct perf_header *ph = ff->ph;
+	bool do_core_id_test = true;
 
 	ph->env.cpu = calloc(cpu_nr, sizeof(*ph->env.cpu));
 	if (!ph->env.cpu)
@@ -2183,6 +2184,13 @@ static int process_cpu_topology(struct feat_fd *ff, void *data __maybe_unused)
 		return 0;
 	}
 
+	/* On s390 the socket_id number is not related to the numbers of cpus.
+	 * The socket_id number might be higher than the numbers of cpus.
+	 * This depends on the configuration.
+	 */
+	if (ph->env.arch && !strncmp(ph->env.arch, "s390", 4))
+		do_core_id_test = false;
+
 	for (i = 0; i < (u32)cpu_nr; i++) {
 		if (do_read_u32(ff, &nr))
 			goto free_cpu;
@@ -2192,7 +2200,7 @@ static int process_cpu_topology(struct feat_fd *ff, void *data __maybe_unused)
 		if (do_read_u32(ff, &nr))
 			goto free_cpu;
 
-		if (nr != (u32)-1 && nr > (u32)cpu_nr) {
+		if (do_core_id_test && nr != (u32)-1 && nr > (u32)cpu_nr) {
 			pr_debug("socket_id number is too big."
 				 "You may need to upgrade the perf tool.\n");
 			goto free_cpu;
@@ -3456,7 +3464,7 @@ int perf_event__process_feature(struct perf_tool *tool,
 		pr_warning("invalid record type %d in pipe-mode\n", type);
 		return 0;
 	}
-	if (feat == HEADER_RESERVED || feat > HEADER_LAST_FEATURE) {
+	if (feat == HEADER_RESERVED || feat >= HEADER_LAST_FEATURE) {
 		pr_warning("invalid record type %d in pipe-mode\n", type);
 		return -1;
 	}