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Commit 1ef09cd7 authored by Preeti U Murthy's avatar Preeti U Murthy Committed by Thomas Gleixner
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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: default avatarPreeti 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: default avatarThomas Gleixner <tglx@linutronix.de>
parent 298dbd1c

kernel/time/timer_list.c

+4 −4
Original line number Diff line number Diff line
@@ -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