From: brookxu <brookxu.cn@gmail.com> To: paolo.valente@linaro.org, axboe@kernel.dk, tj@kernel.org Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 7/8] bfq: reset entity->prio_changed in bfq_init_entity() Date: Tue, 20 Apr 2021 19:20:24 +0800 [thread overview] Message-ID: <34c02f3525ed632ea1878591b41174aee50e953d.1618916839.git.brookxu@tencent.com> (raw) In-Reply-To: <cover.1618916839.git.brookxu@tencent.com> In-Reply-To: <cover.1618916839.git.brookxu@tencent.com> From: Chunguang Xu <brookxu@tencent.com> Since weight, ioprio, ioprio_class will be updated in bfq_init_entity(), st->wsum will be updated in __bfq_activate_entity(), so when it is first active, it seems that __bfq_entity_update_weight_prio() has nothing to do. By resetting entity->prio_change in bfq_init_entity(), we can avoid unnecessary logic calls. Signed-off-by: Chunguang Xu <brookxu@tencent.com> --- block/bfq-cgroup.c | 1 + 1 file changed, 1 insertion(+) diff --git a/block/bfq-cgroup.c b/block/bfq-cgroup.c index c8c68dc..79a5aaa 100644 --- a/block/bfq-cgroup.c +++ b/block/bfq-cgroup.c @@ -426,6 +426,7 @@ void bfq_init_entity(struct bfq_entity *entity, struct bfq_group *bfqg) entity->weight = entity->new_weight; entity->orig_weight = entity->new_weight; + entity->prio_changed = 0; if (bfqq) { bfqq->ioprio = bfqq->new_ioprio; bfqq->ioprio_class = bfqq->new_ioprio_class; -- 1.8.3.1
WARNING: multiple messages have this Message-ID (diff)
From: brookxu <brookxu.cn@gmail.com> To: paolo.valente@linaro.org, axboe@kernel.dk Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RESEND PATCH 7/8] bfq: reset entity->prio_changed in bfq_init_entity() Date: Thu, 10 Jun 2021 15:22:36 +0800 [thread overview] Message-ID: <34c02f3525ed632ea1878591b41174aee50e953d.1618916839.git.brookxu@tencent.com> (raw) Message-ID: <20210610072236.hT2zlrQ_4C3VSfMgP3u3CaWanCwBXkWzzjmWoxs8Vzs@z> (raw) In-Reply-To: <1ce935f1bb10e0c7ecea7b79b826ff4cfc89acf0.1618916839.git.brookxu@tencent.com> In-Reply-To: <cover.1618916839.git.brookxu@tencent.com> From: Chunguang Xu <brookxu@tencent.com> Since weight, ioprio, ioprio_class will be updated in bfq_init_entity(), st->wsum will be updated in __bfq_activate_entity(), so when it is first active, it seems that __bfq_entity_update_weight_prio() has nothing to do. By resetting entity->prio_change in bfq_init_entity(), we can avoid unnecessary logic calls. Signed-off-by: Chunguang Xu <brookxu@tencent.com> --- block/bfq-cgroup.c | 1 + 1 file changed, 1 insertion(+) diff --git a/block/bfq-cgroup.c b/block/bfq-cgroup.c index c8c68dc..79a5aaa 100644 --- a/block/bfq-cgroup.c +++ b/block/bfq-cgroup.c @@ -426,6 +426,7 @@ void bfq_init_entity(struct bfq_entity *entity, struct bfq_group *bfqg) entity->weight = entity->new_weight; entity->orig_weight = entity->new_weight; + entity->prio_changed = 0; if (bfqq) { bfqq->ioprio = bfqq->new_ioprio; bfqq->ioprio_class = bfqq->new_ioprio_class; -- 1.8.3.1
next prev parent reply other threads:[~2021-04-20 11:20 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-20 11:20 [PATCH 0/8] bfq: misc updates brookxu 2021-04-20 11:20 ` [PATCH 1/8] bfq: introduce bfq_entity_to_bfqg helper method brookxu 2021-06-10 7:22 ` [RESEND PATCH " brookxu 2021-04-20 11:20 ` [PATCH 2/8] bfq: convert the type of bfq_group.bfqd to bfq_data* brookxu 2021-06-10 7:22 ` [RESEND PATCH " brookxu 2021-04-20 11:20 ` [PATCH 3/8] bfq: limit the IO depth of CLASS_IDLE to 1 brookxu 2021-06-10 7:22 ` [RESEND PATCH " brookxu 2021-04-20 11:20 ` [PATCH 4/8] bfq: keep the minimun bandwidth for CLASS_BE brookxu 2021-06-10 7:22 ` [RESEND PATCH " brookxu 2021-04-20 11:20 ` [PATCH 5/8] bfq: remove unnecessary initialization logic brookxu 2021-06-10 7:22 ` [RESEND PATCH " brookxu 2021-04-20 11:20 ` [PATCH 6/8] bfq: optimize the calculation of bfq_weight_to_ioprio() brookxu 2021-06-10 7:22 ` [RESEND PATCH " brookxu 2021-04-20 11:20 ` brookxu [this message] 2021-06-10 7:22 ` [RESEND PATCH 7/8] bfq: reset entity->prio_changed in bfq_init_entity() brookxu 2021-04-20 11:20 ` [PATCH 8/8] bfq: remove unnecessary BFQ_DEFAULT_GRP_IOPRIO brookxu 2021-06-10 7:22 ` [RESEND PATCH " brookxu 2021-06-10 7:22 ` [RESEND PATCH 1/8] bfq: introduce bfq_entity_to_bfqg helper method brookxu 2021-06-10 8:31 ` Oleksandr Natalenko 2021-06-10 9:05 ` brookxu 2021-06-10 9:18 ` Piotr Górski
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