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| author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2012-05-21 21:39:42 +0200 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2012-05-21 21:39:42 +0200 |
| commit | 0ad8c6a22d03a1598f7cc6585c65354dadca62ad (patch) | |
| tree | 1507deef3d55d5f3c71b2f76924fe1f6c6211905 /fs/proc/stat.c | |
| parent | 8527f8e2934683e53405fbe876a4e6f4a0c46eb8 (diff) | |
| parent | 76e10d158efb6d4516018846f60c2ab5501900bc (diff) | |
Merge tag 'v3.4' with SCSI updates, needed for subsequent firewire-sbp2 changes
Linux 3.4
Diffstat (limited to 'fs/proc/stat.c')
| -rw-r--r-- | fs/proc/stat.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/fs/proc/stat.c b/fs/proc/stat.c index 6a0c62d6e44..64c3b317236 100644 --- a/fs/proc/stat.c +++ b/fs/proc/stat.c @@ -18,19 +18,39 @@ #ifndef arch_irq_stat #define arch_irq_stat() 0 #endif -#ifndef arch_idle_time -#define arch_idle_time(cpu) 0 -#endif + +#ifdef arch_idle_time + +static cputime64_t get_idle_time(int cpu) +{ + cputime64_t idle; + + idle = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE]; + if (cpu_online(cpu) && !nr_iowait_cpu(cpu)) + idle += arch_idle_time(cpu); + return idle; +} + +static cputime64_t get_iowait_time(int cpu) +{ + cputime64_t iowait; + + iowait = kcpustat_cpu(cpu).cpustat[CPUTIME_IOWAIT]; + if (cpu_online(cpu) && nr_iowait_cpu(cpu)) + iowait += arch_idle_time(cpu); + return iowait; +} + +#else static u64 get_idle_time(int cpu) { u64 idle, idle_time = get_cpu_idle_time_us(cpu, NULL); - if (idle_time == -1ULL) { + if (idle_time == -1ULL) /* !NO_HZ so we can rely on cpustat.idle */ idle = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE]; - idle += arch_idle_time(cpu); - } else + else idle = usecs_to_cputime64(idle_time); return idle; @@ -49,6 +69,8 @@ static u64 get_iowait_time(int cpu) return iowait; } +#endif + static int show_stat(struct seq_file *p, void *v) { int i, j; |