diff mbox series

[v4,1/5] coresight: etm3x: Use task_is_in_init_pid_ns()

Message ID 20220204135051.60639-2-leo.yan@linaro.org (mailing list archive)
State New, archived
Headers show
Series pid: Use helper task_is_in_root_ns() | expand

Commit Message

Leo Yan Feb. 4, 2022, 1:50 p.m. UTC 
This patch replaces open code with task_is_in_init_pid_ns() to check if
a task is in root PID namespace.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
---
 drivers/hwtracing/coresight/coresight-etm3x-sysfs.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c
index e8c7649f123e..ff76cb56b727 100644
--- a/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c
+++ b/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c
@@ -1030,7 +1030,7 @@  static ssize_t ctxid_pid_show(struct device *dev,
 	 * Don't use contextID tracing if coming from a PID namespace.  See
 	 * comment in ctxid_pid_store().
 	 */
-	if (task_active_pid_ns(current) != &init_pid_ns)
+	if (!task_is_in_init_pid_ns(current))
 		return -EINVAL;
 
 	spin_lock(&drvdata->spinlock);
@@ -1058,7 +1058,7 @@  static ssize_t ctxid_pid_store(struct device *dev,
 	 * As such refuse to use the feature if @current is not in the initial
 	 * PID namespace.
 	 */
-	if (task_active_pid_ns(current) != &init_pid_ns)
+	if (!task_is_in_init_pid_ns(current))
 		return -EINVAL;
 
 	ret = kstrtoul(buf, 16, &pid);
@@ -1084,7 +1084,7 @@  static ssize_t ctxid_mask_show(struct device *dev,
 	 * Don't use contextID tracing if coming from a PID namespace.  See
 	 * comment in ctxid_pid_store().
 	 */
-	if (task_active_pid_ns(current) != &init_pid_ns)
+	if (!task_is_in_init_pid_ns(current))
 		return -EINVAL;
 
 	val = config->ctxid_mask;
@@ -1104,7 +1104,7 @@  static ssize_t ctxid_mask_store(struct device *dev,
 	 * Don't use contextID tracing if coming from a PID namespace.  See
 	 * comment in ctxid_pid_store().
 	 */
-	if (task_active_pid_ns(current) != &init_pid_ns)
+	if (!task_is_in_init_pid_ns(current))
 		return -EINVAL;
 
 	ret = kstrtoul(buf, 16, &val);