* [PATCH] drivers/perf: Prevent forced unbinding of ARM_DMC620_PMU drivers
@ 2021-02-02 7:58 Qi Liu
2021-02-02 21:25 ` Will Deacon
0 siblings, 1 reply; 2+ messages in thread
From: Qi Liu @ 2021-02-02 7:58 UTC (permalink / raw)
To: will, mark.rutland; +Cc: linux-kernel, linux-arm-kernel, linuxarm
Set "suppress_bind_attrs" to true, so that bind/unbind can be
disabled via sysfs and prevent unbinding ARM_DMC620_PMU drivers
during perf sampling.
Signed-off-by: Qi Liu <liuqi115@huawei.com>
---
drivers/perf/arm_dmc620_pmu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/perf/arm_dmc620_pmu.c b/drivers/perf/arm_dmc620_pmu.c
index 27f54c0..66ad5b3 100644
--- a/drivers/perf/arm_dmc620_pmu.c
+++ b/drivers/perf/arm_dmc620_pmu.c
@@ -717,6 +717,7 @@ static struct platform_driver dmc620_pmu_driver = {
.driver = {
.name = DMC620_DRVNAME,
.acpi_match_table = dmc620_acpi_match,
+ .suppress_bind_attrs = true,
},
.probe = dmc620_pmu_device_probe,
.remove = dmc620_pmu_device_remove,
--
2.8.1
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] drivers/perf: Prevent forced unbinding of ARM_DMC620_PMU drivers
2021-02-02 7:58 [PATCH] drivers/perf: Prevent forced unbinding of ARM_DMC620_PMU drivers Qi Liu
@ 2021-02-02 21:25 ` Will Deacon
0 siblings, 0 replies; 2+ messages in thread
From: Will Deacon @ 2021-02-02 21:25 UTC (permalink / raw)
To: mark.rutland, Qi Liu
Cc: Will Deacon, catalin.marinas, linux-kernel, linuxarm,
kernel-team, linux-arm-kernel
On Tue, 2 Feb 2021 15:58:06 +0800, Qi Liu wrote:
> Set "suppress_bind_attrs" to true, so that bind/unbind can be
> disabled via sysfs and prevent unbinding ARM_DMC620_PMU drivers
> during perf sampling.
Applied to will (for-next/perf), thanks!
[1/1] drivers/perf: Prevent forced unbinding of ARM_DMC620_PMU drivers
https://git.kernel.org/will/c/20116dd93f4d
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
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2021-02-02 21:25 ` Will Deacon
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