iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sched: Make nr_iowait_cpu() return 32-bit value

Browse Source 
Runqueue ->nr_iowait counters are 32-bit anyway.

Propagate 32-bitness into other code, but don't try too hard.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210422200228.1423391-3-adobriyan@gmail.com
This commit is contained in:
Alexey Dobriyan 2021-04-22 23:02:27 +03:00 committed by Ingo Molnar
parent 9745516841
commit 8fc2858e57
3 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/cpuidle/governors/menu.c
View File

@ -117,7 +117,7 @@ struct menu_device {
int interval_ptr;
};
static inline int which_bucket(u64 duration_ns, unsigned long nr_iowaiters)
static inline int which_bucket(u64 duration_ns, unsigned int nr_iowaiters)
{
int bucket = 0;
@ -150,7 +150,7 @@ static inline int which_bucket(u64 duration_ns, unsigned long nr_iowaiters)
* to be, the higher this multiplier, and thus the higher
* the barrier to go to an expensive C state.
*/
static inline int performance_multiplier(unsigned long nr_iowaiters)
static inline int performance_multiplier(unsigned int nr_iowaiters)
{
/* for IO wait tasks (per cpu!) we add 10x each */
return 1 + 10 * nr_iowaiters;
@ -270,7 +270,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev,
unsigned int predicted_us;
u64 predicted_ns;
u64 interactivity_req;
unsigned long nr_iowaiters;
unsigned int nr_iowaiters;
ktime_t delta, delta_tick;
int i, idx;

2
include/linux/sched/stat.h
View File

@ -20,7 +20,7 @@ extern int nr_processes(void);
extern unsigned int nr_running(void);
extern bool single_task_running(void);
extern unsigned int nr_iowait(void);
extern unsigned long nr_iowait_cpu(int cpu);
extern unsigned int nr_iowait_cpu(int cpu);
static inline int sched_info_on(void)
{

2
kernel/sched/core.c
View File

@ -4739,7 +4739,7 @@ unsigned long long nr_context_switches(void)
* it does become runnable.
*/
unsigned long nr_iowait_cpu(int cpu)
unsigned int nr_iowait_cpu(int cpu)
{
return atomic_read(&cpu_rq(cpu)->nr_iowait);
}