Jens Axboe f8a1a583eb io_uring/sqpoll: switch away from getrusage() for CPU accounting ...

Commit 8ac9b0d33e5c0a995338ee5f25fe1b6ff7d97f65 upstream.

getrusage() does a lot more than what the SQPOLL accounting needs, the
latter only cares about (and uses) the stime. Rather than do a full
RUSAGE_SELF summation, just query the used stime instead.

Cc: stable@vger.kernel.org
Fixes: 3fcb9d1720 ("io_uring/sqpoll: statistics of the true utilization of sq threads")
Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-10-29 14:08:59 +01:00

7.5 KiB

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