From: James Clark <james.clark@linaro.org>
Date: Mon, 3 Mar 2025 03:29:24 +0000 (+0800)
Subject: Coresight: Use coresight_etm_get_trace_id() in traceid_show()
X-Git-Tag: v6.15-rc1~78^2^2~19
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=182e8c70791d68d332b33d5c6e849628f89cdf0d;p=thirdparty%2Fkernel%2Flinux.git

Coresight: Use coresight_etm_get_trace_id() in traceid_show()

Use the new API, coresight_etm_get_trace_id, to read the traceid of the ETM
device when call traceid_show via sysfs node.

Signed-off-by: James Clark <james.clark@linaro.org>
Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Jie Gan <quic_jiegan@quicinc.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20250303032931.2500935-4-quic_jiegan@quicinc.com
---

diff --git a/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c
index 68c644be9813b..b9006451f515f 100644
--- a/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c
+++ b/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c
@@ -1190,10 +1190,9 @@ static DEVICE_ATTR_RO(cpu);
 static ssize_t traceid_show(struct device *dev,
 			    struct device_attribute *attr, char *buf)
 {
-	int trace_id;
 	struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	int trace_id = coresight_etm_get_trace_id(drvdata->csdev, CS_MODE_SYSFS, NULL);
 
-	trace_id = etm_read_alloc_trace_id(drvdata);
 	if (trace_id < 0)
 		return trace_id;
 
diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
index c767f8ae4cf1d..e5216c0f60daf 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
@@ -4,6 +4,7 @@
  * Author: Mathieu Poirier <mathieu.poirier@linaro.org>
  */
 
+#include <linux/coresight.h>
 #include <linux/pid_namespace.h>
 #include <linux/pm_runtime.h>
 #include <linux/sysfs.h>
@@ -2402,10 +2403,9 @@ static ssize_t trctraceid_show(struct device *dev,
 			       struct device_attribute *attr,
 			       char *buf)
 {
-	int trace_id;
 	struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
+	int trace_id = coresight_etm_get_trace_id(drvdata->csdev, CS_MODE_SYSFS, NULL);
 
-	trace_id = etm4_read_alloc_trace_id(drvdata);
 	if (trace_id < 0)
 		return trace_id;