diff options
Diffstat (limited to 'kernel/timer.c')
| -rw-r--r-- | kernel/timer.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/kernel/timer.c b/kernel/timer.c index 06f87498c7c7..56dfe4fc6be4 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -1109,7 +1109,6 @@ asmlinkage long sys_nanosleep(struct timespec *rqtp, struct timespec *rmtp) asmlinkage long sys_sysinfo(struct sysinfo __user *info) { struct sysinfo val; - u64 uptime; unsigned long mem_total, sav_total; unsigned int mem_unit, bitcount; unsigned long seq; @@ -1117,11 +1116,25 @@ asmlinkage long sys_sysinfo(struct sysinfo __user *info) memset((char *)&val, 0, sizeof(struct sysinfo)); do { + struct timespec tp; seq = read_seqbegin(&xtime_lock); - uptime = jiffies_64 - INITIAL_JIFFIES; - do_div(uptime, HZ); - val.uptime = (unsigned long) uptime; + /* + * This is annoying. The below is the same thing + * posix_get_clock_monotonic() does, but it wants to + * take the lock which we want to cover the loads stuff + * too. + */ + + do_gettimeofday((struct timeval *)&tp); + tp.tv_nsec *= NSEC_PER_USEC; + tp.tv_sec += wall_to_monotonic.tv_sec; + tp.tv_nsec += wall_to_monotonic.tv_nsec; + if (tp.tv_nsec - NSEC_PER_SEC >= 0) { + tp.tv_nsec = tp.tv_nsec - NSEC_PER_SEC; + tp.tv_sec++; + } + val.uptime = tp.tv_sec + (tp.tv_nsec ? 1 : 0); val.loads[0] = avenrun[0] << (SI_LOAD_SHIFT - FSHIFT); val.loads[1] = avenrun[1] << (SI_LOAD_SHIFT - FSHIFT); |