summaryrefslogtreecommitdiff
path: root/fs/proc/uptime.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-06 08:33:28 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-06 08:44:54 -0800
commit0db49b72bce26341274b74fd968501489a361ae3 (patch)
treecdb076827aefb38d719d4c42f8ef291c36072fa8 /fs/proc/uptime.c
parent35b740e4662ef386f0c60e1b60aaf5b44db9914c (diff)
parent1ac9bc6943edf7d181b4b1cc734981350d4f6bae (diff)
downloadlwn-0db49b72bce26341274b74fd968501489a361ae3.tar.gz
lwn-0db49b72bce26341274b74fd968501489a361ae3.zip
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits) sched/tracing: Add a new tracepoint for sleeptime sched: Disable scheduler warnings during oopses sched: Fix cgroup movement of waking process sched: Fix cgroup movement of newly created process sched: Fix cgroup movement of forking process sched: Remove cfs bandwidth period check in tg_set_cfs_period() sched: Fix load-balance lock-breaking sched: Replace all_pinned with a generic flags field sched: Only queue remote wakeups when crossing cache boundaries sched: Add missing rcu_dereference() around ->real_parent usage [S390] fix cputime overflow in uptime_proc_show [S390] cputime: add sparse checking and cleanup sched: Mark parent and real_parent as __rcu sched, nohz: Fix missing RCU read lock sched, nohz: Set the NOHZ_BALANCE_KICK flag for idle load balancer sched, nohz: Fix the idle cpu check in nohz_idle_balance sched: Use jump_labels for sched_feat sched/accounting: Fix parameter passing in task_group_account_field sched/accounting: Fix user/system tick double accounting sched/accounting: Re-use scheduler statistics for the root cgroup ... Fix up conflicts in - arch/ia64/include/asm/cputime.h, include/asm-generic/cputime.h usecs_to_cputime64() vs the sparse cleanups - kernel/sched/fair.c, kernel/time/tick-sched.c scheduler changes in multiple branches
Diffstat (limited to 'fs/proc/uptime.c')
-rw-r--r--fs/proc/uptime.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/proc/uptime.c b/fs/proc/uptime.c
index 766b1d456050..9610ac772d7e 100644
--- a/fs/proc/uptime.c
+++ b/fs/proc/uptime.c
@@ -11,15 +11,20 @@ static int uptime_proc_show(struct seq_file *m, void *v)
{
struct timespec uptime;
struct timespec idle;
+ u64 idletime;
+ u64 nsec;
+ u32 rem;
int i;
- cputime_t idletime = cputime_zero;
+ idletime = 0;
for_each_possible_cpu(i)
- idletime = cputime64_add(idletime, kstat_cpu(i).cpustat.idle);
+ idletime += (__force u64) kcpustat_cpu(i).cpustat[CPUTIME_IDLE];
do_posix_clock_monotonic_gettime(&uptime);
monotonic_to_bootbased(&uptime);
- cputime_to_timespec(idletime, &idle);
+ nsec = cputime64_to_jiffies64(idletime) * TICK_NSEC;
+ idle.tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &rem);
+ idle.tv_nsec = rem;
seq_printf(m, "%lu.%02lu %lu.%02lu\n",
(unsigned long) uptime.tv_sec,
(uptime.tv_nsec / (NSEC_PER_SEC / 100)),