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%3Ba=su...

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@vger.kernel.org know about it.

From foo@baz Mon Dec 18 15:03:25 CET 2017

From: Suzuki K Poulose suzuki.poulose@arm.com 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@arm.com

[ 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@arm.com Cc: Will Deacon will.deacon@arm.com Acked-by: Mark Rutland mark.rutland@arm.com Signed-off-by: Suzuki K Poulose suzuki.poulose@arm.com Signed-off-by: Will Deacon will.deacon@arm.com Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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@arm.com are

queue-3.18/arm-ccn-perf-prevent-module-unload-while-pmu-is-in-use.patch