coresight: tmc-etr: Introduce the notion of IDR to ETR devices (c5ff7344) · Commits · 戴 / test

drivers/hwtracing/coresight/coresight-tmc.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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;

+6 −0

Original line number	Diff line number	Diff line
		@@ -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;
		};