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| author | Breno Leitao <leitao@debian.org> | 2024-04-11 22:22:31 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-04-15 21:19:52 +0300 |
| commit | 721f076b62cb05108565adf17c27875ef5015307 (patch) | |
| tree | 98ab8f19bf48dba680172ca5922c9e20bcd5b804 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | cbe481a1b7410b0f2f303e8fd4867ece388a9729 (diff) | |
| download | linux-721f076b62cb05108565adf17c27875ef5015307.tar.xz | |
net: dql: Optimize stall information population
When Dynamic Queue Limit (DQL) is set, it always populate stall
information through dql_queue_stall(). However, this information is
only necessary if a stall threshold is set, stored in struct
dql->stall_thrs.
dql_queue_stall() is cheap, but not free, since it does have memory
barriers and so forth.
Do not call dql_queue_stall() if there is no stall threshold set, and
save some CPU cycles.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20240411192241.2498631-4-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions