From: Ruchi Kandoi <[email protected]> In addition to keeping a histogram of suspend times, also print out the time spent in suspend to dmesg.
This helps to keep track of suspend time while debugging using kernel logs. Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Richard Cochran <[email protected]> Cc: Prarit Bhargava <[email protected]> Signed-off-by: Ruchi Kandoi <[email protected]> [jstultz: Tweaked commit message] Signed-off-by: John Stultz <[email protected]> --- kernel/time/timekeeping_debug.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/time/timekeeping_debug.c b/kernel/time/timekeeping_debug.c index 107310a6..ca9fb80 100644 --- a/kernel/time/timekeeping_debug.c +++ b/kernel/time/timekeeping_debug.c @@ -75,5 +75,7 @@ void tk_debug_account_sleep_time(struct timespec64 *t) int bin = min(fls(t->tv_sec), NUM_BINS-1); sleep_time_bin[bin]++; + pr_info("Suspended for %lld.%03lu seconds\n", (s64)t->tv_sec, + t->tv_nsec / NSEC_PER_MSEC); } -- 1.9.1
