From: Tejun Heo <tj@kernel.org> To: axboe@kernel.dk, newella@fb.com, clm@fb.com, josef@toxicpanda.com, dennisz@fb.com, lizefan@huawei.com, hannes@cmpxchg.org Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, kernel-team@fb.com, cgroups@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, kafai@fb.com, songliubraving@fb.com, yhs@fb.com, bpf@vger.kernel.org, Tejun Heo <tj@kernel.org> Subject: [PATCH 02/10] blkcg: make ->cpd_init_fn() optional Date: Thu, 13 Jun 2019 18:56:12 -0700 Message-ID: <20190614015620.1587672-3-tj@kernel.org> (raw) In-Reply-To: <20190614015620.1587672-1-tj@kernel.org> For policies which can do enough initialization from ->cpd_alloc_fn(), make ->cpd_init_fn() optional. Signed-off-by: Tejun Heo <tj@kernel.org> --- block/blk-cgroup.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 30d3a0fbccac..60ad9b96e6eb 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1534,7 +1534,8 @@ int blkcg_policy_register(struct blkcg_policy *pol) blkcg->cpd[pol->plid] = cpd; cpd->blkcg = blkcg; cpd->plid = pol->plid; - pol->cpd_init_fn(cpd); + if (pol->cpd_init_fn) + pol->cpd_init_fn(cpd); } } -- 2.17.1
next prev parent reply index Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-06-14 1:56 [PATCHSET block/for-next] IO cost model based work-conserving porportional controller Tejun Heo 2019-06-14 1:56 ` [PATCH 01/10] blkcg: pass @q and @blkcg into blkcg_pol_alloc_pd_fn() Tejun Heo 2019-06-14 1:56 ` Tejun Heo [this message] 2019-06-14 1:56 ` [PATCH 03/10] blkcg: separate blkcg_conf_get_disk() out of blkg_conf_prep() Tejun Heo 2019-06-14 1:56 ` [PATCH 04/10] block/rq_qos: add rq_qos_merge() Tejun Heo 2019-06-14 1:56 ` [PATCH 05/10] block/rq_qos: implement rq_qos_ops->queue_depth_changed() Tejun Heo 2019-06-14 1:56 ` [PATCH 06/10] blkcg: s/RQ_QOS_CGROUP/RQ_QOS_LATENCY/ Tejun Heo 2019-06-14 1:56 ` [PATCH 07/10] blk-mq: add optional request->pre_start_time_ns Tejun Heo 2019-06-14 1:56 ` [PATCH 08/10] blkcg: implement blk-ioweight Tejun Heo 2019-06-14 12:17 ` Toke Høiland-Jørgensen 2019-06-14 15:09 ` Tejun Heo 2019-06-14 20:50 ` Toke Høiland-Jørgensen 2019-06-15 15:57 ` Tejun Heo 2019-06-14 1:56 ` [PATCH 09/10] blkcg: add tools/cgroup/monitor_ioweight.py Tejun Heo 2019-06-14 1:56 ` [PATCH 10/10] blkcg: implement BPF_PROG_TYPE_IO_COST Tejun Heo 2019-06-14 11:32 ` Quentin Monnet 2019-06-14 14:52 ` Tejun Heo 2019-06-14 16:35 ` Alexei Starovoitov 2019-06-14 17:09 ` Tejun Heo 2019-06-14 17:56 ` [PATCHSET block/for-next] IO cost model based work-conserving porportional controller Tejun Heo 2019-08-20 10:48 ` Paolo Valente 2019-08-20 15:04 ` Paolo Valente 2019-08-20 15:19 ` Tejun Heo 2019-08-22 8:58 ` Paolo Valente 2019-08-31 6:53 ` Tejun Heo 2019-08-31 7:10 ` Paolo Valente 2019-08-31 11:20 ` Tejun Heo 2019-09-02 15:45 ` Paolo Valente 2019-09-02 15:56 ` Tejun Heo 2019-09-02 19:43 ` Paolo Valente 2019-09-05 16:55 ` Tejun Heo 2019-09-06 9:07 ` Paolo Valente 2019-09-06 14:58 ` Tejun Heo 2020-02-19 18:34 ` Paolo Valente 2019-07-10 20:51 [PATCHSET v2 block/for-linus] " Tejun Heo 2019-07-10 20:51 ` [PATCH 02/10] blkcg: make ->cpd_init_fn() optional Tejun Heo 2019-08-28 22:05 [PATCHSET v3 block/for-linus] IO cost model based work-conserving porportional controller Tejun Heo 2019-08-28 22:05 ` [PATCH 02/10] blkcg: make ->cpd_init_fn() optional Tejun Heo
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