diff options
Diffstat (limited to 'drivers/hwtracing')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc.c | 4 | ||||
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc.h | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc.c b/drivers/hwtracing/coresight/coresight-tmc.c index c6a5462ebf27..9f9b2c514566 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.c +++ b/drivers/hwtracing/coresight/coresight-tmc.c @@ -8,10 +8,12 @@ #include <linux/init.h> #include <linux/types.h> #include <linux/device.h> +#include <linux/idr.h> #include <linux/io.h> #include <linux/err.h> #include <linux/fs.h> #include <linux/miscdevice.h> +#include <linux/mutex.h> #include <linux/property.h> #include <linux/uaccess.h> #include <linux/slab.h> @@ -450,6 +452,8 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id) coresight_get_uci_data(id)); if (ret) goto out; + idr_init(&drvdata->idr); + mutex_init(&drvdata->idr_mutex); break; case TMC_CONFIG_TYPE_ETF: desc.type = CORESIGHT_DEV_TYPE_LINKSINK; diff --git a/drivers/hwtracing/coresight/coresight-tmc.h b/drivers/hwtracing/coresight/coresight-tmc.h index ee44906dffe8..c1b1700b2df7 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.h +++ b/drivers/hwtracing/coresight/coresight-tmc.h @@ -8,7 +8,9 @@ #define _CORESIGHT_TMC_H #include <linux/dma-mapping.h> +#include <linux/idr.h> #include <linux/miscdevice.h> +#include <linux/mutex.h> #include <linux/refcount.h> #define TMC_RSZ 0x004 @@ -173,6 +175,8 @@ struct etr_buf { * @trigger_cntr: amount of words to store after a trigger. * @etr_caps: Bitmask of capabilities of the TMC ETR, inferred from the * device configuration register (DEVID) + * @idr: Holds etr_bufs allocated for this ETR. + * @idr_mutex: Access serialisation for idr. * @perf_data: PERF buffer for ETR. * @sysfs_data: SYSFS buffer for ETR. */ @@ -194,6 +198,8 @@ struct tmc_drvdata { enum tmc_mem_intf_width memwidth; u32 trigger_cntr; u32 etr_caps; + struct idr idr; + struct mutex idr_mutex; struct etr_buf *sysfs_buf; void *perf_data; }; |