From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EE1FDBA42 for ; Tue, 16 Apr 2024 02:11:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713233475; cv=none; b=KiibMUuMiwDzuM/QaNZ5O0BsKyie1KD4vJOX0JyutiM5cJNJfmLvgL9UjU+mJelmbyGbwDVmnLBnvTxVqjq1Vu/ksP4FMVcJy+bHMyeUU4a9li7MQCoxuKjBLB5lLqet596cYzZqfZYlHGYuB1GZ2owWAH6PIydF18LRo8DeSsA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713233475; c=relaxed/simple; bh=octNNAG+ro+uzmGugssjZE9qzOAnd6mYmMs/uMxBSRM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fD3RX3Yocs6XzdPHb4VWck+xL+qlTdPoqXPh9JYJsxbAZwqNvyx0mlwGDDuVHqKIBxmmZZAuIiZB1SweSLr9M4PMijio0uHgdg4u2iQoWvs3ryRJ7jQCBIKXcJa9Q5J5xup3P6nXGc9aomeE5+3Xjg4ZFdXRFchhnq8eJ0f1q84= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=suse.de; spf=pass smtp.mailfrom=suse.de; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b=ZnfO4Zcx; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b=9YtJHmam; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b=ZnfO4Zcx; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b=9YtJHmam; arc=none smtp.client-ip=195.135.223.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=suse.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b="ZnfO4Zcx"; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b="9YtJHmam"; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b="ZnfO4Zcx"; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b="9YtJHmam" Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 1DA2233DDA; Tue, 16 Apr 2024 02:11:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1713233472; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ey3OUeYkohPOlghPl0r3kMV8MnLlnHUwhfDp1j1bBN0=; b=ZnfO4Zcxjrg99roVjgOVIDhj+Gy+8ClGv8Wq9sTt0gCWMN/QQ/yzlBk88K95L4ufhMgkkt qnj8LrVKYR3yVM/ygZoyhp/HORRGmF9umyQ5tHmd0EvFDprs0NsmVxK4Qp7GrMkKZBXQlX OsSyvnUhSl5WumxVhGB5s0O2cxEeO+k= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1713233472; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ey3OUeYkohPOlghPl0r3kMV8MnLlnHUwhfDp1j1bBN0=; b=9YtJHmamSJO+xseIEZ4CbYymZpkxtpAohgu8UdNfDM/07WRo7EXkqRbaeUhqdD6DX89IqA y3xHYcjPgWTf/FBw== Authentication-Results: smtp-out1.suse.de; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=ZnfO4Zcx; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=9YtJHmam DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1713233472; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ey3OUeYkohPOlghPl0r3kMV8MnLlnHUwhfDp1j1bBN0=; b=ZnfO4Zcxjrg99roVjgOVIDhj+Gy+8ClGv8Wq9sTt0gCWMN/QQ/yzlBk88K95L4ufhMgkkt qnj8LrVKYR3yVM/ygZoyhp/HORRGmF9umyQ5tHmd0EvFDprs0NsmVxK4Qp7GrMkKZBXQlX OsSyvnUhSl5WumxVhGB5s0O2cxEeO+k= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1713233472; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ey3OUeYkohPOlghPl0r3kMV8MnLlnHUwhfDp1j1bBN0=; b=9YtJHmamSJO+xseIEZ4CbYymZpkxtpAohgu8UdNfDM/07WRo7EXkqRbaeUhqdD6DX89IqA y3xHYcjPgWTf/FBw== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id D8E5A13931; Tue, 16 Apr 2024 02:11:11 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id BefALj/eHWbJeAAAD6G6ig (envelope-from ); Tue, 16 Apr 2024 02:11:11 +0000 From: Gabriel Krisman Bertazi To: axboe@kernel.dk Cc: io-uring@vger.kernel.org, Gabriel Krisman Bertazi Subject: [PATCH 2/2] io-wq: Drop intermediate step between pending list and active work Date: Mon, 15 Apr 2024 22:10:54 -0400 Message-ID: <20240416021054.3940-3-krisman@suse.de> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240416021054.3940-1-krisman@suse.de> References: <20240416021054.3940-1-krisman@suse.de> Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Action: no action X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spam-Level: X-Spamd-Result: default: False [-0.83 / 50.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; BAYES_HAM(-0.82)[85.00%]; R_MISSING_CHARSET(0.50)[]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; MIME_TRACE(0.00)[0:+]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; TO_DN_SOME(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns,suse.de:dkim,suse.de:email]; RCVD_TLS_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; DKIM_TRACE(0.00)[suse.de:+] X-Rspamd-Queue-Id: 1DA2233DDA X-Spam-Flag: NO X-Spam-Score: -0.83 X-Spamd-Bar: / next_work is only used to make the work visible for cancellation. Instead, we can just directly write to cur_work before dropping the acct_lock and avoid the extra hop. Signed-off-by: Gabriel Krisman Bertazi --- io_uring/io-wq.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/io_uring/io-wq.c b/io_uring/io-wq.c index 318ed067dbf6..d7fc6f6d4477 100644 --- a/io_uring/io-wq.c +++ b/io_uring/io-wq.c @@ -51,7 +51,6 @@ struct io_worker { struct io_wq *wq; struct io_wq_work *cur_work; - struct io_wq_work *next_work; raw_spinlock_t lock; struct completion ref_done; @@ -539,7 +538,6 @@ static void io_assign_current_work(struct io_worker *worker, raw_spin_lock(&worker->lock); worker->cur_work = work; - worker->next_work = NULL; raw_spin_unlock(&worker->lock); } @@ -573,7 +571,7 @@ static void io_worker_handle_work(struct io_wq_acct *acct, * current work item for this worker. */ raw_spin_lock(&worker->lock); - worker->next_work = work; + worker->cur_work = work; raw_spin_unlock(&worker->lock); } @@ -1008,8 +1006,7 @@ static bool io_wq_worker_cancel(struct io_worker *worker, void *data) * may dereference the passed in work. */ raw_spin_lock(&worker->lock); - if (__io_wq_worker_cancel(worker, match, worker->cur_work) || - __io_wq_worker_cancel(worker, match, worker->next_work)) + if (__io_wq_worker_cancel(worker, match, worker->cur_work)) match->nr_running++; raw_spin_unlock(&worker->lock); -- 2.44.0