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| author | Paolo Valente <[email protected]> | 2021-03-04 18:46:24 +0100 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2021-03-25 10:50:07 -0600 |
| commit | 8ef3fc3a043cd4b3dfdb260f02be5f65cc31445d (patch) | |
| tree | dbfe2b6b5847271e4a7c177bbd602661d9617fe9 /tools/perf/scripts/python/syscall-counts.py | |
| parent | 7cc4ffc55564df4349050bcbf46fbdf3f35aef52 (diff) | |
block, bfq: make shared queues inherit wakers
Consider a bfq_queue bfqq that is about to be merged with another
bfq_queue new_bfqq. The processes associated with bfqq are cooperators
of the processes associated with new_bfqq. So, if bfqq has a waker,
then it is reasonable (and beneficial for throughput) to assume that
all these processes will be happy to let bfqq's waker freely inject
I/O when they have no I/O. So this commit makes new_bfqq inherit
bfqq's waker.
Tested-by: Jan Kara <[email protected]>
Signed-off-by: Paolo Valente <[email protected]>
Tested-by: Oleksandr Natalenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions