/proc/stat shows (among lots of other things) the current boottime
(i.e. number of seconds since boot). While a 32-bit number is sufficient
for this particular case, we want to get rid of the 'struct timespec'
suffers from a 32-bit overflow in 2038.
This changes the code to use a struct timespec64, which is known to
be safe in all cases.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
fs/proc/stat.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index 510413eb25b8..7907e456ac4f 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -80,19 +80,17 @@ static u64 get_iowait_time(int cpu)
static int show_stat(struct seq_file *p, void *v)
{
int i, j;
- unsigned long jif;
u64 user, nice, system, idle, iowait, irq, softirq, steal;
u64 guest, guest_nice;
u64 sum = 0;
u64 sum_softirq = 0;
unsigned int per_softirq_sums[NR_SOFTIRQS] = {0};
- struct timespec boottime;
+ struct timespec64 boottime;
user = nice = system = idle = iowait =
irq = softirq = steal = 0;
guest = guest_nice = 0;
- getboottime(&boottime);
- jif = boottime.tv_sec;
+ getboottime64(&boottime);
for_each_possible_cpu(i) {
user += kcpustat_cpu(i).cpustat[CPUTIME_USER];
@@ -163,12 +161,12 @@ static int show_stat(struct seq_file *p, void *v)
seq_printf(p,
"\nctxt %llu\n"
- "btime %lu\n"
+ "btime %llu\n"
"processes %lu\n"
"procs_running %lu\n"
"procs_blocked %lu\n",
nr_context_switches(),
- (unsigned long)jif,
+ (unsigned long long)boottime.tv_sec,
total_forks,
nr_running(),
nr_iowait());
--
2.9.0
--
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