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 3.18-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-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Dec 18 15:03:25 CET 2017
From: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
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 <suzuki.poulose@xxxxxxx>
[ 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 <pawel.moll@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Acked-by: Mark Rutland <mark.rutland@xxxxxxx>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/bus/arm-ccn.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/bus/arm-ccn.c
+++ b/drivers/bus/arm-ccn.c
@@ -1157,6 +1157,7 @@ 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 suzuki.poulose@xxxxxxx are
queue-3.18/arm-ccn-perf-prevent-module-unload-while-pmu-is-in-use.patch