From: Hiroaki Mihara Date: Tue, 24 Sep 2019 22:32:06 +0000 (+0900) Subject: blkparse: split off the timestamp correction code in to a separate function X-Git-Tag: blktrace-1.3.0~24 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=d025d6c67760a52e34e6c7352f33ad5dbbb4f6f4;p=blktrace.git blkparse: split off the timestamp correction code in to a separate function find_genesis() function has code to correct abs_start_time, which is later used to calculate the absolute timestamps of each traced records. Put this code in a separate function, so that it can be used later by the blkparse code. No functional change. Signed-off-by: Hiroaki Mihara Signed-off-by: Jens Axboe --- diff --git a/blkparse.c b/blkparse.c index 3de2ebe..cf7a87b 100644 --- a/blkparse.c +++ b/blkparse.c @@ -2022,6 +2022,22 @@ static void show_device_and_cpu_stats(void) } } +static void correct_abs_start_time(void) +{ + long delta = genesis_time - start_timestamp; + + abs_start_time.tv_sec += SECONDS(delta); + abs_start_time.tv_nsec += NANO_SECONDS(delta); + if (abs_start_time.tv_nsec < 0) { + abs_start_time.tv_nsec += 1000000000; + abs_start_time.tv_sec -= 1; + } else + if (abs_start_time.tv_nsec > 1000000000) { + abs_start_time.tv_nsec -= 1000000000; + abs_start_time.tv_sec += 1; + } +} + static void find_genesis(void) { struct trace *t = trace_list; @@ -2039,18 +2055,7 @@ static void find_genesis(void) */ if (start_timestamp && start_timestamp != genesis_time) { - long delta = genesis_time - start_timestamp; - - abs_start_time.tv_sec += SECONDS(delta); - abs_start_time.tv_nsec += NANO_SECONDS(delta); - if (abs_start_time.tv_nsec < 0) { - abs_start_time.tv_nsec += 1000000000; - abs_start_time.tv_sec -= 1; - } else - if (abs_start_time.tv_nsec > 1000000000) { - abs_start_time.tv_nsec -= 1000000000; - abs_start_time.tv_sec += 1; - } + correct_abs_start_time(); } }