From patchwork Thu Jun 16 09:22:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 12883646 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EDA5DC43334 for ; Thu, 16 Jun 2022 09:23:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376668AbiFPJXC (ORCPT ); Thu, 16 Jun 2022 05:23:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47760 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376655AbiFPJXA (ORCPT ); Thu, 16 Jun 2022 05:23:00 -0400 Received: from mail-wm1-x32a.google.com (mail-wm1-x32a.google.com [IPv6:2a00:1450:4864:20::32a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E9ACC193E3 for ; Thu, 16 Jun 2022 02:22:58 -0700 (PDT) Received: by mail-wm1-x32a.google.com with SMTP id l126-20020a1c2584000000b0039c1a10507fso534752wml.1 for ; Thu, 16 Jun 2022 02:22:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=5V/K45g9wpqoJNn9BXBkT927aYIh71OeYAeKJeObVFk=; b=RlquVMAPlEOISo16lDxOP4xOacXdN+leilPiO/Lk4KZix4LB9WikcmcRs/X7DDvddg L3ja85OVVziR9M0OuHFe0CI+o0MCbZNCU/wF5EMFZe4sfTZkmRIA1ayF6bHrITCYwsHH fA75dfCvtJEnRNky32z4JjZErV3uXwJ2ciXhlNuwbK/tiaVBkrzIX62vvJ3FPRaTd8sv sgDWVs6din4XrMl80fFsuDrqjrddAVIujkaMs1+3wDeFl1dWcuj5MjTUjzWGkN1eN6Gn Ap8zrv0Ii8/0odF5+ozUVwDR/tz4Zjfam3gTjawIPuslflNMEtI9fhAPMQBLDlDEYOpq GY3A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=5V/K45g9wpqoJNn9BXBkT927aYIh71OeYAeKJeObVFk=; b=iv0lSfPQerfB52nFOpGskq6+Tu48iTwDf6TRhKjbuKLzUxD/0a8WfhCNJHP3AXo01T 34KfL1nUSs0J4totf80aEJZpn7T+rSGNDJBMABzFXcIYUhFPMi3q+C3RPgQW6Ju2pRy2 L3EOc9IWwuM4cs1vRN4arYE8isN9YDVhAl4EMma0lAZvxfppmnXxPKdK2DvHZhE0+3uO kNvbBjE2zGwGKh0SN5W1UUDBlUNVHbt3+vmalfITp8QmFI5SfuUzjtk3NUFvuuPeu10r dEfNm7O/EWhHo7YCwkoSwHyzskgQZ7jQmwl2QMIjmV3Xxm/pYLl102hmiMtLV9fkz8TD LHLA== X-Gm-Message-State: AJIora9VPtNNHto6HcjOQAe35tSVs5GDN9LgkfojVlCvbht5LoKXhWWH EHBaQRdU7Z6AgCcySDgqmbvPXvvL1MAe6A== X-Google-Smtp-Source: AGRyM1ugt6JI3aGYVI9UPAlUPBjFc0pPKRZuyYv+a4tfnunKMCA+jNTakE9eRUOy/oOBOAf3UgOKbQ== X-Received: by 2002:a05:600c:3c8f:b0:39b:808c:b5cb with SMTP id bg15-20020a05600c3c8f00b0039b808cb5cbmr3918015wmb.11.1655371377244; Thu, 16 Jun 2022 02:22:57 -0700 (PDT) Received: from 127.0.0.1localhost (188.28.125.106.threembb.co.uk. [188.28.125.106]) by smtp.gmail.com with ESMTPSA id s6-20020a1cf206000000b0039c975aa553sm1695221wmc.25.2022.06.16.02.22.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Jun 2022 02:22:56 -0700 (PDT) From: Pavel Begunkov To: io-uring@vger.kernel.org Cc: Jens Axboe , asml.silence@gmail.com Subject: [PATCH for-next v3 13/16] io_uring: pass hash table into poll_find Date: Thu, 16 Jun 2022 10:22:09 +0100 Message-Id: X-Mailer: git-send-email 2.36.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org In preparation for having multiple cancellation hash tables, pass a table pointer into io_poll_find() and other poll cancel functions. Signed-off-by: Pavel Begunkov --- io_uring/poll.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/io_uring/poll.c b/io_uring/poll.c index c4ce98504986..5cc03be365e3 100644 --- a/io_uring/poll.c +++ b/io_uring/poll.c @@ -556,11 +556,12 @@ __cold bool io_poll_remove_all(struct io_ring_ctx *ctx, struct task_struct *tsk, static struct io_kiocb *io_poll_find(struct io_ring_ctx *ctx, bool poll_only, struct io_cancel_data *cd, + struct io_hash_bucket hash_table[], struct io_hash_bucket **out_bucket) { struct io_kiocb *req; u32 index = hash_long(cd->data, ctx->cancel_hash_bits); - struct io_hash_bucket *hb = &ctx->cancel_hash[index]; + struct io_hash_bucket *hb = &hash_table[index]; *out_bucket = NULL; @@ -584,6 +585,7 @@ static struct io_kiocb *io_poll_find(struct io_ring_ctx *ctx, bool poll_only, static struct io_kiocb *io_poll_file_find(struct io_ring_ctx *ctx, struct io_cancel_data *cd, + struct io_hash_bucket hash_table[], struct io_hash_bucket **out_bucket) { struct io_kiocb *req; @@ -592,7 +594,7 @@ static struct io_kiocb *io_poll_file_find(struct io_ring_ctx *ctx, *out_bucket = NULL; for (i = 0; i < (1U << ctx->cancel_hash_bits); i++) { - struct io_hash_bucket *hb = &ctx->cancel_hash[i]; + struct io_hash_bucket *hb = &hash_table[i]; spin_lock(&hb->lock); hlist_for_each_entry(req, &hb->list, hash_node) { @@ -619,15 +621,16 @@ static bool io_poll_disarm(struct io_kiocb *req) return true; } -int io_poll_cancel(struct io_ring_ctx *ctx, struct io_cancel_data *cd) +static int __io_poll_cancel(struct io_ring_ctx *ctx, struct io_cancel_data *cd, + struct io_hash_bucket hash_table[]) { struct io_hash_bucket *bucket; struct io_kiocb *req; if (cd->flags & (IORING_ASYNC_CANCEL_FD|IORING_ASYNC_CANCEL_ANY)) - req = io_poll_file_find(ctx, cd, &bucket); + req = io_poll_file_find(ctx, cd, ctx->cancel_hash, &bucket); else - req = io_poll_find(ctx, false, cd, &bucket); + req = io_poll_find(ctx, false, cd, ctx->cancel_hash, &bucket); if (req) io_poll_cancel_req(req); @@ -636,6 +639,11 @@ int io_poll_cancel(struct io_ring_ctx *ctx, struct io_cancel_data *cd) return req ? 0 : -ENOENT; } +int io_poll_cancel(struct io_ring_ctx *ctx, struct io_cancel_data *cd) +{ + return __io_poll_cancel(ctx, cd, ctx->cancel_hash); +} + static __poll_t io_poll_parse_events(const struct io_uring_sqe *sqe, unsigned int flags) { @@ -731,7 +739,7 @@ int io_poll_remove(struct io_kiocb *req, unsigned int issue_flags) int ret2, ret = 0; bool locked; - preq = io_poll_find(ctx, true, &cd, &bucket); + preq = io_poll_find(ctx, true, &cd, ctx->cancel_hash, &bucket); if (preq) ret2 = io_poll_disarm(preq); if (bucket)