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Commit 7c71feb0 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by John Stultz
Browse files

timer: Avoid using timespec 



The tstats_show() function prints a ktime_t variable by converting
it to struct timespec first. The algorithm is ok, but we want to
stop using timespec in general because of the 32-bit time_t
overflow problem.

This changes the code to use struct timespec64, without any
functional change.

Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
parent 4a19bd3d

kernel/time/timer_stats.c

+3 −3
Original line number Diff line number Diff line
@@ -279,7 +279,7 @@ static void print_name_offset(struct seq_file *m, unsigned long addr) 


static int tstats_show(struct seq_file *m, void *v)

{

	struct timespec period;

	struct timespec64 period;

	struct entry *entry;

	unsigned long ms;

	long events = 0;
@@ -295,11 +295,11 @@ static int tstats_show(struct seq_file *m, void *v) 


	time = ktime_sub(time_stop, time_start);



	period = ktime_to_timespec(time);

	period = ktime_to_timespec64(time);

	ms = period.tv_nsec / 1000000;



	seq_puts(m, "Timer Stats Version: v0.3\n");

	seq_printf(m, "Sample period: %ld.%03ld s\n", period.tv_sec, ms);

	seq_printf(m, "Sample period: %ld.%03ld s\n", (long)period.tv_sec, ms);

	if (atomic_read(&overflow_count))

		seq_printf(m, "Overflow: %d entries\n", atomic_read(&overflow_count));

	seq_printf(m, "Collection: %s\n", timer_stats_active ? "active" : "inactive");