diff options
author | John Garry <john.garry@huawei.com> | 2020-03-17 19:02:14 +0800 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-03-24 10:35:59 -0300 |
commit | d84478088780acdecfcf50a0e52b71cc4ab7c520 (patch) | |
tree | 78e91db8873e7f6520f8f1d370f3df0af58bb985 /tools | |
parent | c52db67a74b3a9b834af4588489cfea22ec280a3 (diff) |
perf jevents: Support test events folder
With the goal of supporting pmu-events test case, introduce support for
a test events folder.
These test events can be used for testing generation of pmu-event tables
and alias creation for any arch.
When running the pmu-events test case, these test events will be used as
the platform-agnostic events, so aliases can be created per-PMU and
validated against known expected values.
To support the test events, add a "testcpu" entry in pmu_events_map[].
The pmu-events test will be able to lookup the events map for "testcpu",
to verify the generated tables against expected values.
The resultant generated pmu-events.c will now look like the following:
struct pmu_event pme_ampere_emag[] = {
{
.name = "ldrex_spec",
.event = "event=0x6c",
.desc = "Exclusive operation spe...",
.topic = "intrinsic",
.long_desc = "Exclusive operation ...",
},
...
};
struct pmu_event pme_test_cpu[] = {
{
.name = "uncore_hisi_ddrc.flux_wcmd",
.event = "event=0x2",
.desc = "DDRC write commands. Unit: hisi_sccl,ddrc ",
.topic = "uncore",
.long_desc = "DDRC write commands",
.pmu = "hisi_sccl,ddrc",
},
{
.name = "unc_cbo_xsnp_response.miss_eviction",
.event = "umask=0x81,event=0x22",
.desc = "Unit: uncore_cbox A cross-core snoop resulted ...",
.topic = "uncore",
.long_desc = "A cross-core snoop resulted from L3 ...",
.pmu = "uncore_cbox",
},
{
.name = "eist_trans",
.event = "umask=0x0,period=200000,event=0x3a",
.desc = "Number of Enhanced Intel SpeedStep(R) ...",
.topic = "other",
},
{
.name = 0,
},
};
struct pmu_events_map pmu_events_map[] = {
...
{
.cpuid = "0x00000000500f0000",
.version = "v1",
.type = "core",
.table = pme_ampere_emag
},
...
{
.cpuid = "testcpu",
.version = "v1",
.type = "core",
.table = pme_test_cpu,
},
{
.cpuid = 0,
.version = 0,
.type = 0,
.table = 0,
},
};
Signed-off-by: John Garry <john.garry@huawei.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: James Clark <james.clark@arm.com>
Cc: Joakim Zhang <qiangqing.zhang@nxp.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: linuxarm@huawei.com
Link: http://lore.kernel.org/lkml/1584442939-8911-3-git-send-email-john.garry@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/perf/pmu-events/jevents.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c index 3c4236a5bad8..fa86c5f997cc 100644 --- a/tools/perf/pmu-events/jevents.c +++ b/tools/perf/pmu-events/jevents.c @@ -771,6 +771,19 @@ static void print_mapping_table_suffix(FILE *outfp) fprintf(outfp, "};\n"); } +static void print_mapping_test_table(FILE *outfp) +{ + /* + * Print the terminating, NULL entry. + */ + fprintf(outfp, "{\n"); + fprintf(outfp, "\t.cpuid = \"testcpu\",\n"); + fprintf(outfp, "\t.version = \"v1\",\n"); + fprintf(outfp, "\t.type = \"core\",\n"); + fprintf(outfp, "\t.table = pme_test_cpu,\n"); + fprintf(outfp, "},\n"); +} + static int process_mapfile(FILE *outfp, char *fpath) { int n = 16384; @@ -848,6 +861,7 @@ static int process_mapfile(FILE *outfp, char *fpath) } out: + print_mapping_test_table(outfp); print_mapping_table_suffix(outfp); fclose(mapfp); free(line); @@ -1168,6 +1182,22 @@ int main(int argc, char *argv[]) goto empty_map; } + sprintf(ldirname, "%s/test", start_dirname); + + rc = nftw(ldirname, process_one_file, maxfds, 0); + if (rc && verbose) { + pr_info("%s: Error walking file tree %s rc=%d for test\n", + prog, ldirname, rc); + goto empty_map; + } else if (rc < 0) { + /* Make build fail */ + free_arch_std_events(); + ret = 1; + goto out_free_mapfile; + } else if (rc) { + goto empty_map; + } + if (close_table) print_events_table_suffix(eventsfp); |