[PATCH] cgroup: Use lld instead of ld when printing pids controller events_limit

[Kenny Yu]

The `events_limit` variable needs to be formatted with %lld and not %ld.
This fixes the following warning discovered by kbuild test robot:

   kernel/cgroup_pids.c: In function 'pids_events_show':
   kernel/cgroup_pids.c:313:24: warning: format '%ld' expects argument of type
   'long int', but argument 3 has type 'long long int' [-Wformat=]
        seq_printf(sf, "max %ld\n", atomic64_read(&pids->events_limit));
                                   ^

tj: Added explicit (s64) cast as atomic64 switches between long long
    and long depending on 32 or 64.

Signed-off-by: Kenny Yu <kennyyu@xxxxxx>
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
---
 kernel/cgroup_pids.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/cgroup_pids.c b/kernel/cgroup_pids.c
index 9740ea6..2bd6737 100644
--- a/kernel/cgroup_pids.c
+++ b/kernel/cgroup_pids.c
@@ -310,7 +310,7 @@ static int pids_events_show(struct seq_file *sf, void *v)
 {
 	struct pids_cgroup *pids = css_pids(seq_css(sf));
 
-	seq_printf(sf, "max %ld\n", atomic64_read(&pids->events_limit));
+	seq_printf(sf, "max %lld\n", (s64)atomic64_read(&pids->events_limit));
 	return 0;
 }
 
-- 
2.7.4