Commit c441e934 authored by Minchan Kim's avatar Minchan Kim Committed by Peter Zijlstra
Browse files

locking: Add missing __sched attributes 



This patch adds __sched attributes to a few missing places
to show blocked function rather than locking function
in get_wchan.

Signed-off-by: default avatarMinchan Kim <minchan@kernel.org>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220115231657.84828-1-minchan@kernel.org
parent 1dc01aba

kernel/locking/percpu-rwsem.c

+3 −2
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#include <linux/rcupdate.h>

#include <linux/sched.h>

#include <linux/sched/task.h>

#include <linux/sched/debug.h>

#include <linux/errno.h>



int __percpu_init_rwsem(struct percpu_rw_semaphore *sem,
@@ -162,7 +163,7 @@ static void percpu_rwsem_wait(struct percpu_rw_semaphore *sem, bool reader) 
	__set_current_state(TASK_RUNNING);

}



bool __percpu_down_read(struct percpu_rw_semaphore *sem, bool try)

bool __sched __percpu_down_read(struct percpu_rw_semaphore *sem, bool try)

{

	if (__percpu_down_read_trylock(sem))

		return true;
@@ -211,7 +212,7 @@ static bool readers_active_check(struct percpu_rw_semaphore *sem) 
	return true;

}



void percpu_down_write(struct percpu_rw_semaphore *sem)

void __sched percpu_down_write(struct percpu_rw_semaphore *sem)

{

	might_sleep();

	rwsem_acquire(&sem->dep_map, 0, 0, _RET_IP_);

kernel/locking/rwsem.c

+1 −1
Original line number Diff line number Diff line
@@ -1048,7 +1048,7 @@ rwsem_down_read_slowpath(struct rw_semaphore *sem, long count, unsigned int stat 
/*

 * Wait until we successfully acquire the write lock

 */

static struct rw_semaphore *

static struct rw_semaphore __sched *

rwsem_down_write_slowpath(struct rw_semaphore *sem, int state)

{

	long count;