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Date: Tue, 25 Oct 2011 18:35:18 +1100
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
"H. Peter Anvin" <hpa@...or.com>,
Peter Zijlstra <peterz@...radead.org>
Cc: linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
Martin Schwidefsky <schwidefsky@...ibm.com>,
Michal Hocko <mhocko@...e.cz>
Subject: linux-next: manual merge of the tip tree with the cputime tree
Hi all,
Today's linux-next merge of the tip tree got a conflict in fs/proc/stat.c
between commit f6116715d1ba ("[S390] cputime: add sparse checking and
cleanup") from the cputime tree and commit a25cac5198d4 ("proc: Consider
NO_HZ when printing idle and iowait times") from the tip tree.
I fixed it up (see below) and can carry the fix as necessary.
--
Cheers,
Stephen Rothwell sfr@...b.auug.org.au
diff --cc fs/proc/stat.c
index 566cd04,42b274d..0000000
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@@ -21,6 -22,35 +22,34 @@@
#define arch_idle_time(cpu) 0
#endif
+ static cputime64_t get_idle_time(int cpu)
+ {
+ u64 idle_time = get_cpu_idle_time_us(cpu, NULL);
+ cputime64_t idle;
+
+ if (idle_time == -1ULL) {
+ /* !NO_HZ so we can rely on cpustat.idle */
- idle = kstat_cpu(cpu).cpustat.idle;
- idle = cputime64_add(idle, arch_idle_time(cpu));
++ idle = kstat_cpu(cpu).cpustat.idle + arch_idle_time(cpu);
+ } else
+ idle = usecs_to_cputime(idle_time);
+
+ return idle;
+ }
+
+ static cputime64_t get_iowait_time(int cpu)
+ {
+ u64 iowait_time = get_cpu_iowait_time_us(cpu, NULL);
+ cputime64_t iowait;
+
+ if (iowait_time == -1ULL)
+ /* !NO_HZ so we can rely on cpustat.iowait */
+ iowait = kstat_cpu(cpu).cpustat.iowait;
+ else
+ iowait = usecs_to_cputime(iowait_time);
+
+ return iowait;
+ }
+
static int show_stat(struct seq_file *p, void *v)
{
int i, j;
@@@ -39,16 -69,17 +68,16 @@@
jif = boottime.tv_sec;
for_each_possible_cpu(i) {
- user = cputime64_add(user, kstat_cpu(i).cpustat.user);
- nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
- system = cputime64_add(system, kstat_cpu(i).cpustat.system);
- idle = cputime64_add(idle, get_idle_time(i));
- iowait = cputime64_add(iowait, get_iowait_time(i));
- irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
- softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
- steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
- guest = cputime64_add(guest, kstat_cpu(i).cpustat.guest);
- guest_nice = cputime64_add(guest_nice,
- kstat_cpu(i).cpustat.guest_nice);
+ user += kstat_cpu(i).cpustat.user;
+ nice += kstat_cpu(i).cpustat.nice;
+ system += kstat_cpu(i).cpustat.system;
- idle += kstat_cpu(i).cpustat.idle + arch_idle_time(i);
- iowait += kstat_cpu(i).cpustat.iowait;
++ idle += get_idle_time(i);
++ iowait += get_iowait_time(i);
+ irq += kstat_cpu(i).cpustat.irq;
+ softirq += kstat_cpu(i).cpustat.softirq;
+ steal += kstat_cpu(i).cpustat.steal;
+ guest += kstat_cpu(i).cpustat.guest;
+ guest_nice += kstat_cpu(i).cpustat.guest_nice;
sum += kstat_cpu_irqs_sum(i);
sum += arch_irq_stat_cpu(i);
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