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| author |   Mathieu Poirier <mathieu.poirier@linaro.org> | 2019-04-25 13:53:01 -0600 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-25 22:00:17 +0200 |
| commit | a0f08a6a9fee0ce3f2d36e3e30799e4c1ec171f4 (patch) | |
| tree | 2857a8f2ca1f542ec1cc4b3453f9fb0a39025557 /drivers/hwtracing/coresight/coresight-tmc-etr.c | |
| parent | coresight: perf: Refactor function free_event_data() (diff) | |
| download | linux-dev-a0f08a6a9fee0ce3f2d36e3e30799e4c1ec171f4.tar.xz linux-dev-a0f08a6a9fee0ce3f2d36e3e30799e4c1ec171f4.zip | |
coresight: Communicate perf event to sink buffer allocation functions
Make struct perf_event available to sink buffer allocation functions in
order to use the pid they carry to allocate and free buffer memory along
with regimenting access to what source a sink can collect data for.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-tmc-etr.c')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc-etr.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index 9a0b346be58b..55ee0aca321c 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -1167,13 +1167,18 @@ out: * reaches a minimum limit (1M), beyond which we give up. */ static struct etr_perf_buffer * -tmc_etr_setup_perf_buf(struct tmc_drvdata *drvdata, int node, int nr_pages, - void **pages, bool snapshot) +tmc_etr_setup_perf_buf(struct tmc_drvdata *drvdata, struct perf_event *event, + int nr_pages, void **pages, bool snapshot) { + int node, cpu = event->cpu; struct etr_buf *etr_buf; struct etr_perf_buffer *etr_perf; unsigned long size; + if (cpu == -1) + cpu = smp_processor_id(); + node = cpu_to_node(cpu); + etr_perf = kzalloc_node(sizeof(*etr_perf), GFP_KERNEL, node); if (!etr_perf) return ERR_PTR(-ENOMEM); @@ -1211,16 +1216,13 @@ done: static void *tmc_alloc_etr_buffer(struct coresight_device *csdev, - int cpu, void **pages, int nr_pages, - bool snapshot) + struct perf_event *event, void **pages, + int nr_pages, bool snapshot) { struct etr_perf_buffer *etr_perf; struct tmc_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); - if (cpu == -1) - cpu = smp_processor_id(); - - etr_perf = tmc_etr_setup_perf_buf(drvdata, cpu_to_node(cpu), + etr_perf = tmc_etr_setup_perf_buf(drvdata, event, nr_pages, pages, snapshot); if (IS_ERR(etr_perf)) { dev_dbg(drvdata->dev, "Unable to allocate ETR buffer\n"); |