diff options
author | Clark Williams <williams@redhat.com> | 2012-04-15 23:24:46 -0500 |
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committer | Clark Williams <williams@redhat.com> | 2012-04-15 23:24:46 -0500 |
commit | 8e9c931b8e4150f3c5aaab7e4639cd507c30477c (patch) | |
tree | 4c77bef833db938a950c60095f628acc1ebff50a /fs/proc/stat.c | |
parent | 3524a83e5459ae4ba42f9bf098bb736b99b88695 (diff) | |
parent | e816b57a337ea3b755de72bec38c10c864f23015 (diff) |
Merge commit 'v3.4-rc3' into rt-3.4-rc3-rt4v3.4-rc3-rt4
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 6a0c62d6e442..64c3b3172367 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; |