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sched: Make nr_running() return 32-bit value 

Creating 2**32 tasks is impossible due to futex pid limits and wasteful
anyway. Nobody has done it.

Bring nr_running() into 32-bit world to save on REX prefixes.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210422200228.1423391-1-adobriyan@gmail.com
This commit is contained in:
Alexey Dobriyan 2021-04-22 23:02:25 +03:00 committed by Ingo Molnar
parent cc00c19888
commit 01aee8fd7f
4 changed files with 5 additions and 5 deletions
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2
fs/proc/loadavg.c
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@ -16,7 +16,7 @@ static int loadavg_proc_show(struct seq_file *m, void *v)
get_avenrun(avnrun, FIXED_1/200, 0); 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[0]), LOAD_FRAC(avnrun[0]),
LOAD_INT(avnrun[1]), LOAD_FRAC(avnrun[1]), LOAD_INT(avnrun[1]), LOAD_FRAC(avnrun[1]),
LOAD_INT(avnrun[2]), LOAD_FRAC(avnrun[2]), LOAD_INT(avnrun[2]), LOAD_FRAC(avnrun[2]),

2
fs/proc/stat.c
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@ -200,7 +200,7 @@ static int show_stat(struct seq_file *p, void *v)
"\nctxt %llu\n" "\nctxt %llu\n"
"btime %llu\n" "btime %llu\n"
"processes %lu\n" "processes %lu\n"
"procs_running %lu\n" "procs_running %u\n"
"procs_blocked %lu\n", "procs_blocked %lu\n",
nr_context_switches(), nr_context_switches(),
(unsigned long long)boottime.tv_sec, (unsigned long long)boottime.tv_sec,

2
include/linux/sched/stat.h
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@ -17,7 +17,7 @@ extern unsigned long total_forks;
extern int nr_threads; extern int nr_threads;
DECLARE_PER_CPU(unsigned long, process_counts); DECLARE_PER_CPU(unsigned long, process_counts);
extern int nr_processes(void); extern int nr_processes(void);
extern unsigned long nr_running(void); extern unsigned int nr_running(void);
extern bool single_task_running(void); extern bool single_task_running(void);
extern unsigned long nr_iowait(void); extern unsigned long nr_iowait(void);
extern unsigned long nr_iowait_cpu(int cpu); extern unsigned long nr_iowait_cpu(int cpu);

4
kernel/sched/core.c
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@ -4692,9 +4692,9 @@ context_switch(struct rq *rq, struct task_struct *prev,
* externally visible scheduler statistics: current number of runnable * externally visible scheduler statistics: current number of runnable
* threads, total number of context switches performed since bootup. * 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) for_each_online_cpu(i)
sum += cpu_rq(i)->nr_running; sum += cpu_rq(i)->nr_running;