Re: [PATCH 2/2] arm-ccn: perf: Prevent module unload while PMU is in use
On Fri, Nov 03, 2017 at 11:45:18AM +, Suzuki K Poulose wrote:
> 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: commit a33b0daab73a0 ("bus: ARM CCN PMU driver")
> Cc: Pawel Moll
> Cc: Will Deacon
> Cc: Mark Rutland
> Signed-off-by: Suzuki K Poulose
With Will's nit on the Fixes tag cleaned up:
Acked-by: Mark Rutland
Mark.
> ---
> drivers/bus/arm-ccn.c | 1 +
> 1 file changed, 1 insertion(+)
>
> 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,
> --
> 2.13.6
>
Re: [PATCH 2/2] arm-ccn: perf: Prevent module unload while PMU is in use
On Fri, Nov 03, 2017 at 11:45:18AM +, Suzuki K Poulose wrote:
> 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: commit a33b0daab73a0 ("bus: ARM CCN PMU driver")
> Cc: Pawel Moll
> Cc: Will Deacon
> Cc: Mark Rutland
> Signed-off-by: Suzuki K Poulose
With Will's nit on the Fixes tag cleaned up:
Acked-by: Mark Rutland
Mark.
> ---
> drivers/bus/arm-ccn.c | 1 +
> 1 file changed, 1 insertion(+)
>
> 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,
> --
> 2.13.6
>
Re: [PATCH 2/2] arm-ccn: perf: Prevent module unload while PMU is in use
On Fri, Nov 03, 2017 at 11:45:18AM +, Suzuki K Poulose wrote:
> 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: commit a33b0daab73a0 ("bus: ARM CCN PMU driver")
nit: don't need "commit" here.
> Cc: Pawel Moll
> Cc: Will Deacon
> Cc: Mark Rutland
> Signed-off-by: Suzuki K Poulose
> ---
> drivers/bus/arm-ccn.c | 1 +
> 1 file changed, 1 insertion(+)
>
> 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,
I'll pick this up since I'm taking the SPE fix via arm64 anyway.
Will
Re: [PATCH 2/2] arm-ccn: perf: Prevent module unload while PMU is in use
On Fri, Nov 03, 2017 at 11:45:18AM +, Suzuki K Poulose wrote:
> 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: commit a33b0daab73a0 ("bus: ARM CCN PMU driver")
nit: don't need "commit" here.
> Cc: Pawel Moll
> Cc: Will Deacon
> Cc: Mark Rutland
> Signed-off-by: Suzuki K Poulose
> ---
> drivers/bus/arm-ccn.c | 1 +
> 1 file changed, 1 insertion(+)
>
> 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,
I'll pick this up since I'm taking the SPE fix via arm64 anyway.
Will
