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| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2017-11-03 11:45:18 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-11-03 15:24:06 +0000 |
| commit | c7f5828bf77dcbd61d51f4736c1d5aa35663fbb4 (patch) | |
| tree | a2366e8c25bd2ce8d017d4432be84de665237751 /drivers/bus/arm-ccn.c | |
| parent | 19b4aff2025b4336392c30bb638b7d01c6263301 (diff) | |
| download | lwn-c7f5828bf77dcbd61d51f4736c1d5aa35663fbb4.tar.gz lwn-c7f5828bf77dcbd61d51f4736c1d5aa35663fbb4.zip | |
arm-ccn: perf: Prevent module unload while PMU is in use
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>
Diffstat (limited to 'drivers/bus/arm-ccn.c')
| -rw-r--r-- | drivers/bus/arm-ccn.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c index e8c6946fed9d..3063f5312397 100644 --- a/drivers/bus/arm-ccn.c +++ b/drivers/bus/arm-ccn.c @@ -1276,6 +1276,7 @@ static int arm_ccn_pmu_init(struct arm_ccn *ccn) /* 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, |