diff options
| author | Robin Murphy <robin.murphy@arm.com> | 2024-04-09 18:15:17 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-04-10 16:48:17 +0100 |
| commit | 8f9f5041c64600b01b71f29fb8e2121e45bfb719 (patch) | |
| tree | 40d3353aa4360420c1b65d3b7f526382c85989d7 | |
| parent | 595275ca498485667039e8c190453a9a684687cb (diff) | |
| download | linux-8f9f5041c64600b01b71f29fb8e2121e45bfb719.tar.gz | |
perf/arm-cmn: Set PMU device parent
Now that perf supports giving the PMU device a parent, we can use our
platform device to make the relationship between CMN instances and PMU
IDs trivially discoverable, from either nominal direction:
root@crazy-taxi:~# ls /sys/devices/platform/ARMHC600:00 | grep cmn
arm_cmn_0
root@crazy-taxi:~# realpath /sys/bus/event_source/devices/arm_cmn_0/..
/sys/devices/platform/ARMHC600:00
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/25d4428df1ddad966c74a3ed60171cd3ca6c8b66.1712682917.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | drivers/perf/arm-cmn.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index 6bfb0c4a1287ec..e26ad1d3ed0bb7 100644 --- a/drivers/perf/arm-cmn.c +++ b/drivers/perf/arm-cmn.c @@ -2482,6 +2482,7 @@ static int arm_cmn_probe(struct platform_device *pdev) cmn->cpu = cpumask_local_spread(0, dev_to_node(cmn->dev)); cmn->pmu = (struct pmu) { .module = THIS_MODULE, + .parent = cmn->dev, .attr_groups = arm_cmn_attr_groups, .capabilities = PERF_PMU_CAP_NO_EXCLUDE, .task_ctx_nr = perf_invalid_context, |