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Patch "arm-ccn: perf: Prevent module unload while PMU is in use" has been added to the 4.14-stable tree

PATCH [email protected] 1 participant 1 message Dec 18, 2017 Stable branch

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This is a note to let you know that I've just added the patch titled

arm-ccn: perf: Prevent module unload while PMU is in use

to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
arm-ccn-perf-prevent-module-unload-while-pmu-is-in-use.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From foo@baz Mon Dec 18 13:28:59 CET 2017

From: Suzuki K Poulose <[email protected]>
Date: Fri, 3 Nov 2017 11:45:18 +0000
Subject: arm-ccn: perf: Prevent module unload while PMU is in use

From: Suzuki K Poulose <[email protected]>

[ Upstream commit c7f5828bf77dcbd61d51f4736c1d5aa35663fbb4 ]

When the PMU driver is built as a module, the perf expects the pmu->module to be valid, so that the driver is prevented from being unloaded while it is in use. Fix the CCN pmu driver to fill in this field.

Fixes a33b0daab73a0 ("bus: ARM CCN PMU driver")
Cc Pawel Moll <[email protected]>
Cc Will Deacon <[email protected]>
---
 drivers/bus/arm-ccn.c |    1 +
 1 file changed, 1 insertion(+)
drivers/bus/arm-ccn.c +1 -0
@@ -1280,6 +1280,7 @@ static int arm_ccn_pmu_init(struct arm_c
 
 	/* Perf driver registration */
 	ccn->dt.pmu = (struct pmu) {
+		.module = THIS_MODULE,
 		.attr_groups = arm_ccn_pmu_attr_groups,
 		.task_ctx_nr = perf_invalid_context,
 		.event_init = arm_ccn_pmu_event_init,

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/arm-ccn-perf-prevent-module-unload-while-pmu-is-in-use.patch