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| author | Karsten Graul <kgraul@linux.ibm.com> | 2020-09-10 19:48:29 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-11 01:24:27 +0300 |
| commit | 22ef473dbd66a5241b6cedc186abca5a3a4eb922 (patch) | |
| tree | 8b6237bb247ca5642a9f10fccabf25d0a908aca9 /net/smc/smc_core.c | |
| parent | 8418cb4065e3d6d214f7d5535c99deba6e813bf7 (diff) | |
| download | linux-22ef473dbd66a5241b6cedc186abca5a3a4eb922.tar.xz | |
net/smc: use separate work queues for different worker types
There are 6 types of workers which exist per smc connection. 3 of them
are used for listen and handshake processing, another 2 are used for
close and abort processing and 1 is the tx worker that moves calls to
sleeping functions into a worker.
To prevent flooding of the system work queue when many connections are
opened or closed at the same time (some pattern uperf implements), move
those workers to one of 3 smc-specific work queues. Two work queues are
module-global and used for handshake and close workers. The third work
queue is defined per link group and used by the tx workers that may
sleep waiting for resources of this link group.
And in smc_llc_enqueue() queue the llc_event_work work to the system
prio work queue because its critical that this work is started fast.
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_core.c')
| -rw-r--r-- | net/smc/smc_core.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c index e8711830d69e..c811ae1a8add 100644 --- a/net/smc/smc_core.c +++ b/net/smc/smc_core.c @@ -386,6 +386,12 @@ static int smc_lgr_create(struct smc_sock *smc, struct smc_init_info *ini) rc = SMC_CLC_DECL_MEM; goto ism_put_vlan; } + lgr->tx_wq = alloc_workqueue("smc_tx_wq-%*phN", 0, 0, + SMC_LGR_ID_SIZE, &lgr->id); + if (!lgr->tx_wq) { + rc = -ENOMEM; + goto free_lgr; + } lgr->is_smcd = ini->is_smcd; lgr->sync_err = 0; lgr->terminating = 0; @@ -426,7 +432,7 @@ static int smc_lgr_create(struct smc_sock *smc, struct smc_init_info *ini) lnk = &lgr->lnk[link_idx]; rc = smcr_link_init(lgr, lnk, link_idx, ini); if (rc) - goto free_lgr; + goto free_wq; lgr_list = &smc_lgr_list.list; lgr_lock = &smc_lgr_list.lock; atomic_inc(&lgr_cnt); @@ -437,6 +443,8 @@ static int smc_lgr_create(struct smc_sock *smc, struct smc_init_info *ini) spin_unlock_bh(lgr_lock); return 0; +free_wq: + destroy_workqueue(lgr->tx_wq); free_lgr: kfree(lgr); ism_put_vlan: @@ -506,7 +514,7 @@ static int smc_switch_cursor(struct smc_sock *smc, struct smc_cdc_tx_pend *pend, smc->sk.sk_state != SMC_CLOSED) { rc = smcr_cdc_msg_send_validation(conn, pend, wr_buf); if (!rc) { - schedule_delayed_work(&conn->tx_work, 0); + queue_delayed_work(conn->lgr->tx_wq, &conn->tx_work, 0); smc->sk.sk_data_ready(&smc->sk); } } else { @@ -813,6 +821,7 @@ static void smc_lgr_free(struct smc_link_group *lgr) } smc_lgr_free_bufs(lgr); + destroy_workqueue(lgr->tx_wq); if (lgr->is_smcd) { smc_ism_put_vlan(lgr->smcd, lgr->vlan_id); put_device(&lgr->smcd->dev); |