lkml.org 
[lkml]   [2019]   [Jun]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 1/5] perf pmu: Fix uncore PMU alias list for ARM64
Date
In commit 292c34c10249 ("perf pmu: Fix core PMU alias list for X86
platform"), we fixed the issue of CPU events being aliased to uncore
events.

Fix this same issue for ARM64, since the said commit left the (broken)
behaviour untouched for ARM64.

Signed-off-by: John Garry <john.garry@huawei.com>
---
tools/perf/util/pmu.c | 28 ++++++++++++----------------
1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index f2eff272279b..7e7299fee550 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -709,9 +709,7 @@ static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu)
{
int i;
struct pmu_events_map *map;
- struct pmu_event *pe;
const char *name = pmu->name;
- const char *pname;

map = perf_pmu__find_map(pmu);
if (!map)
@@ -722,28 +720,26 @@ static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu)
*/
i = 0;
while (1) {
+ const char *cpu_name = is_arm_pmu_core(name) ? name : "cpu";
+ struct pmu_event *pe = &map->table[i++];
+ const char *pname = pe->pmu ? pe->pmu : cpu_name;

- pe = &map->table[i++];
if (!pe->name) {
if (pe->metric_group || pe->metric_name)
continue;
break;
}

- if (!is_arm_pmu_core(name)) {
- pname = pe->pmu ? pe->pmu : "cpu";
-
- /*
- * uncore alias may be from different PMU
- * with common prefix
- */
- if (pmu_is_uncore(name) &&
- !strncmp(pname, name, strlen(pname)))
- goto new_alias;
+ /*
+ * uncore alias may be from different PMU
+ * with common prefix
+ */
+ if (pmu_is_uncore(name) &&
+ !strncmp(pname, name, strlen(pname)))
+ goto new_alias;

- if (strcmp(pname, name))
- continue;
- }
+ if (strcmp(pname, name))
+ continue;

new_alias:
pr_err("%s new_alias name=%s pe->name=%s\n", __func__, name, pe->name);
--
2.17.1
\
 
 \ /
  Last update: 2019-06-14 16:10    [W:0.166 / U:0.076 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site