[3/5] sched: make nr_iowait() return 32-bit value
diff mbox series

Message ID 20210206152229.GC487103@localhost.localdomain
State New, archived
Headers show
Series
  • [1/5] sched: make struct task_struct::state 32-bit
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Commit Message

Alexey Dobriyan Feb. 6, 2021, 3:22 p.m. UTC
Creating 2**32 tasks to wait in D-state is impossible and wasteful.

Return "unsigned int" and save on REX prefixes.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---

 fs/proc/stat.c             |    2 +-
 include/linux/sched/stat.h |    2 +-
 kernel/sched/core.c        |    4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

Patch
diff mbox series

--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -201,7 +201,7 @@  static int show_stat(struct seq_file *p, void *v)
 		"btime %llu\n"
 		"processes %lu\n"
 		"procs_running %u\n"
-		"procs_blocked %lu\n",
+		"procs_blocked %u\n",
 		nr_context_switches(),
 		(unsigned long long)boottime.tv_sec,
 		total_forks,
--- a/include/linux/sched/stat.h
+++ b/include/linux/sched/stat.h
@@ -18,7 +18,7 @@  DECLARE_PER_CPU(unsigned long, process_counts);
 extern int nr_processes(void);
 unsigned int nr_running(void);
 extern bool single_task_running(void);
-extern unsigned long nr_iowait(void);
+unsigned int nr_iowait(void);
 extern unsigned long nr_iowait_cpu(int cpu);
 
 static inline int sched_info_on(void)
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4418,9 +4418,9 @@  unsigned long nr_iowait_cpu(int cpu)
  * Task CPU affinities can make all that even more 'interesting'.
  */
 
-unsigned long nr_iowait(void)
+unsigned int nr_iowait(void)
 {
-	unsigned long i, sum = 0;
+	unsigned int i, sum = 0;
 
 	for_each_possible_cpu(i)
 		sum += nr_iowait_cpu(i);