Re: [PATCH] scsi: libfc: fix seconds_since_last_reset calculation
From: Martin K. Petersen
Date: Mon Jun 20 2016 - 22:05:45 EST
>>>>> "Arnd" == Arnd Bergmann <arnd@xxxxxxxx> writes:
Arnd> The fc_get_host_stats() function contains a complex conversion
Arnd> from jiffies to timespec to seconds. As we try to get rid of uses
Arnd> of struct timespec, we can clean this up and replace it with a
Arnd> simpler computation.
Arnd> Simply dividing the difference in jiffies by HZ is not only much
Arnd> more efficient, it also avoids a problem that causes the
Arnd> seconds_since_last_reset value to be incorrect if jiffies has
Arnd> overrun since the 'boot_time' value was recorded.
Applied to 4.8/scsi-queue.
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Martin K. Petersen Oracle Linux Engineering