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coresight: Remove function coresight_vpid_to_pid()

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Now that we prevent users from using contextID tracing when PID namespaces
are involved there is no client for function coresight_vpid_to_pid().  As
such simply remove it.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Kim Phillips <kim.phillips@arm.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathieu Poirier 2018-07-11 13:40:13 -06:00 committed by Greg Kroah-Hartman
parent 450367f06e
commit 25b4a2b909
1 changed files with 0 additions and 20 deletions
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20
include/linux/coresight.h
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@ -267,24 +267,4 @@ static inline struct coresight_platform_data *of_get_coresight_platform_data(
struct device *dev, const struct device_node *node) { return NULL; }
#endif
#ifdef CONFIG_PID_NS
static inline unsigned long
coresight_vpid_to_pid(unsigned long vpid)
{
struct task_struct *task = NULL;
unsigned long pid = 0;
rcu_read_lock();
task = find_task_by_vpid(vpid);
if (task)
pid = task_pid_nr(task);
rcu_read_unlock();
return pid;
}
#else
static inline unsigned long
coresight_vpid_to_pid(unsigned long vpid) { return vpid; }
#endif
#endif