tick-broadcast: Fix the printing of broadcast masks

Today the number of bits of the broadcast masks that is output into
/proc/timer_list is sizeof(unsigned long). This means that on machines
with a larger number of CPUs, the bitmasks of CPUs beyond this range do
not appear.

Fix this by using bitmap printing through "%*pb" instead, so as to
output the broadcast masks for the range of nr_cpu_ids into
/proc/timer_list.

Signed-off-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Cc: peterz@infradead.org
Cc: linuxppc-dev@ozlabs.org
Cc: john.stultz@linaro.org
Link: http://lkml.kernel.org/r/20150428084520.3314.62668.stgit@preeti.in.ibm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c
index 66f39bba5353c4c09bdf885afa7b76e167cee147..18b074b215b0a171b9411cd1c8154c3a47b59ce8 100644 (file)
--- a/kernel/time/timer_list.c
+++ b/kernel/time/timer_list.c
@@ -276,11 +276,11 @@ static void timer_list_show_tickdevices_header(struct seq_file *m)
 {
 #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
        print_tickdevice(m, tick_get_broadcast_device(), -1);
-       SEQ_printf(m, "tick_broadcast_mask: %08lx\n",
-                  cpumask_bits(tick_get_broadcast_mask())[0]);
+       SEQ_printf(m, "tick_broadcast_mask: %*pb\n",
+                  cpumask_pr_args(tick_get_broadcast_mask()));
 #ifdef CONFIG_TICK_ONESHOT
-       SEQ_printf(m, "tick_broadcast_oneshot_mask: %08lx\n",
-                  cpumask_bits(tick_get_broadcast_oneshot_mask())[0]);
+       SEQ_printf(m, "tick_broadcast_oneshot_mask: %*pb\n",
+                  cpumask_pr_args(tick_get_broadcast_oneshot_mask()));
 #endif
        SEQ_printf(m, "\n");
 #endif