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* [PATCH 01/15] sched: make nr_running() return "unsigned int"
@ 2020-04-20 20:57 Alexey Dobriyan
  2020-04-20 20:57 ` [PATCH 02/15] sched: make nr_iowait_cpu() " Alexey Dobriyan
                   ` (14 more replies)
  0 siblings, 15 replies; 26+ messages in thread
From: Alexey Dobriyan @ 2020-04-20 20:57 UTC (permalink / raw)
  To: akpm
  Cc: adobriyan, linux-kernel, linux-fsdevel, pmladek, rostedt,
	sergey.senozhatsky, andriy.shevchenko, linux

I don't anyone have been crazy enough to spawn 2^32 threads.
It'd require absurd amounts of physical memory,  and bump into futex pid
limit anyway.

Meanwhile save few bits on REX prefixes and some stack space for upcoming
print_integer() stuff.

And remove "extern" from prototypes while I'm at it.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
 fs/proc/loadavg.c          | 2 +-
 fs/proc/stat.c             | 2 +-
 include/linux/sched/stat.h | 2 +-
 kernel/sched/core.c        | 4 ++--
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/proc/loadavg.c b/fs/proc/loadavg.c
index 8468baee951d..f32878d9a39f 100644
--- a/fs/proc/loadavg.c
+++ b/fs/proc/loadavg.c
@@ -16,7 +16,7 @@ static int loadavg_proc_show(struct seq_file *m, void *v)
 
 	get_avenrun(avnrun, FIXED_1/200, 0);
 
-	seq_printf(m, "%lu.%02lu %lu.%02lu %lu.%02lu %ld/%d %d\n",
+	seq_printf(m, "%lu.%02lu %lu.%02lu %lu.%02lu %u/%d %d\n",
 		LOAD_INT(avnrun[0]), LOAD_FRAC(avnrun[0]),
 		LOAD_INT(avnrun[1]), LOAD_FRAC(avnrun[1]),
 		LOAD_INT(avnrun[2]), LOAD_FRAC(avnrun[2]),
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index 46b3293015fe..93ce344f62a5 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -197,7 +197,7 @@ static int show_stat(struct seq_file *p, void *v)
 		"\nctxt %llu\n"
 		"btime %llu\n"
 		"processes %lu\n"
-		"procs_running %lu\n"
+		"procs_running %u\n"
 		"procs_blocked %lu\n",
 		nr_context_switches(),
 		(unsigned long long)boottime.tv_sec,
diff --git a/include/linux/sched/stat.h b/include/linux/sched/stat.h
index 568286411b43..f3b86515bafe 100644
--- a/include/linux/sched/stat.h
+++ b/include/linux/sched/stat.h
@@ -16,7 +16,7 @@ extern unsigned long total_forks;
 extern int nr_threads;
 DECLARE_PER_CPU(unsigned long, process_counts);
 extern int nr_processes(void);
-extern unsigned long nr_running(void);
+unsigned int nr_running(void);
 extern bool single_task_running(void);
 extern unsigned long nr_iowait(void);
 extern unsigned long nr_iowait_cpu(int cpu);
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 3a61a3b8eaa9..d9bae602966c 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3381,9 +3381,9 @@ context_switch(struct rq *rq, struct task_struct *prev,
  * externally visible scheduler statistics: current number of runnable
  * threads, total number of context switches performed since bootup.
  */
-unsigned long nr_running(void)
+unsigned int nr_running(void)
 {
-	unsigned long i, sum = 0;
+	unsigned int i, sum = 0;
 
 	for_each_online_cpu(i)
 		sum += cpu_rq(i)->nr_running;
-- 
2.24.1


^ permalink raw reply	[flat|nested] 26+ messages in thread

end of thread, other threads:[~2020-04-23  3:42 UTC | newest]

Thread overview: 26+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-04-20 20:57 [PATCH 01/15] sched: make nr_running() return "unsigned int" Alexey Dobriyan
2020-04-20 20:57 ` [PATCH 02/15] sched: make nr_iowait_cpu() " Alexey Dobriyan
2020-04-20 20:57 ` [PATCH 03/15] print_integer: new and improved way of printing integers Alexey Dobriyan
2020-04-20 21:19   ` Andy Shevchenko
2020-04-20 21:27     ` Andy Shevchenko
2020-04-21  1:54       ` Steven Rostedt
2020-04-21 16:49         ` Alexey Dobriyan
2020-04-21 21:08           ` Steven Rostedt
2020-04-23  3:42           ` Sergey Senozhatsky
2020-04-21 16:31     ` Alexey Dobriyan
2020-04-21 16:59   ` Matthew Wilcox
2020-04-20 20:57 ` [PATCH 04/15] print_integer, proc: rewrite /proc/self via print_integer() Alexey Dobriyan
2020-04-20 20:57 ` [PATCH 05/15] print_integer, proc: rewrite /proc/thread-self " Alexey Dobriyan
2020-04-20 20:57 ` [PATCH 06/15] print_integer, proc: rewrite /proc/loadavg " Alexey Dobriyan
2020-04-20 20:57 ` [PATCH 07/15] print_integer, proc: rewrite /proc/stat " Alexey Dobriyan
2020-04-20 20:57 ` [PATCH 08/15] print_integer, proc: rewrite /proc/uptime " Alexey Dobriyan
2020-04-20 20:57 ` [PATCH 09/15] proc: s/p/tsk/ Alexey Dobriyan
2020-04-20 20:57 ` [PATCH 10/15] print_integer, proc: rewrite /proc/*/fd via print_integer() Alexey Dobriyan
2020-04-20 20:57 ` [PATCH 11/15] print_integer, proc: rewrite /proc/*/stat " Alexey Dobriyan
2020-04-20 20:57 ` [PATCH 12/15] print_integer, proc: rewrite /proc/*/statm " Alexey Dobriyan
2020-04-20 20:57 ` [PATCH 13/15] print_integer, printf: rewrite num_to_str() " Alexey Dobriyan
2020-04-20 20:57 ` [PATCH 14/15] print_integer, printf: rewrite the rest of lib/vsprintf.c " Alexey Dobriyan
2020-04-21  2:01   ` Steven Rostedt
2020-04-20 20:57 ` [PATCH 15/15] print_integer, proc: rewrite /proc/meminfo " Alexey Dobriyan
2020-04-20 21:05 ` [PATCH 01/15] sched: make nr_running() return "unsigned int" Matthew Wilcox
2020-04-21 17:06   ` Alexey Dobriyan

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