From patchwork Thu Nov 23 01:47:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuniyuki Iwashima X-Patchwork-Id: 13465683 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="WQQA3Rbe" Received: from smtp-fw-6001.amazon.com (smtp-fw-6001.amazon.com [52.95.48.154]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4AC0312A for ; Wed, 22 Nov 2023 17:48:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1700704088; x=1732240088; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=2N3hz4WoOT+k/R2WopwaZzFpMTttdSYnDipeZE0M0dQ=; b=WQQA3RbeUD7Kao2kDkAAFBydaRw3m/csGVz5Z5f2wbZMYF239jLu9pfn 48IDsOWV8+hBRTPBfY9QRSXh5Mg8YNZ6eMj+XIwpaMBVW8bBa1rCfIxCQ 6Zg+9gyaVK4gyZ9aMG2kxyorsabCz185ssGfH+ppIN4seOKJ/yo6w0tJ1 A=; X-IronPort-AV: E=Sophos;i="6.04,220,1695686400"; d="scan'208";a="372049747" Received: from iad12-co-svc-p1-lb1-vlan2.amazon.com (HELO email-inbound-relay-iad-1e-m6i4x-7dc0ecf1.us-east-1.amazon.com) ([10.43.8.2]) by smtp-border-fw-6001.iad6.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Nov 2023 01:48:05 +0000 Received: from smtpout.prod.us-west-2.prod.farcaster.email.amazon.dev (iad7-ws-svc-p70-lb3-vlan2.iad.amazon.com [10.32.235.34]) by email-inbound-relay-iad-1e-m6i4x-7dc0ecf1.us-east-1.amazon.com (Postfix) with ESMTPS id 5858F8038C; Thu, 23 Nov 2023 01:48:03 +0000 (UTC) Received: from EX19MTAUWB001.ant.amazon.com [10.0.7.35:56743] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.8.2:2525] with esmtp (Farcaster) id b70eab57-50c0-4828-8ff9-1379ac8f75bd; Thu, 23 Nov 2023 01:48:02 +0000 (UTC) X-Farcaster-Flow-ID: b70eab57-50c0-4828-8ff9-1379ac8f75bd Received: from EX19D004ANA001.ant.amazon.com (10.37.240.138) by EX19MTAUWB001.ant.amazon.com (10.250.64.248) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.39; Thu, 23 Nov 2023 01:48:01 +0000 Received: from 88665a182662.ant.amazon.com.com (10.187.170.50) by EX19D004ANA001.ant.amazon.com (10.37.240.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.39; Thu, 23 Nov 2023 01:47:59 +0000 From: Kuniyuki Iwashima To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni CC: Ivan Babrou , Kuniyuki Iwashima , Kuniyuki Iwashima , Subject: [PATCH v2 net-next 0/4] af_unix: Random improvements for GC. Date: Wed, 22 Nov 2023 17:47:43 -0800 Message-ID: <20231123014747.66063-1-kuniyu@amazon.com> X-Mailer: git-send-email 2.30.2 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: EX19D031UWC003.ant.amazon.com (10.13.139.252) To EX19D004ANA001.ant.amazon.com (10.37.240.138) Precedence: Bulk X-Patchwork-Delegate: kuba@kernel.org If more than 16000 inflight AF_UNIX sockets exist on a host, each sendmsg() will be forced to wait for unix_gc() even if a process is not sending any FD. This series tries not to impose such a penalty on sane users. Changes: v2: Patch 4: Fix build error when CONFIG_UNIX=n (kernel test robot) v1: https://lore.kernel.org/netdev/20231122013629.28554-1-kuniyu@amazon.com/ Kuniyuki Iwashima (4): af_unix: Do not use atomic ops for unix_sk(sk)->inflight. af_unix: Return struct unix_sock from unix_get_socket(). af_unix: Run GC on only one CPU. af_unix: Try to run GC async. include/linux/io_uring.h | 4 +- include/net/af_unix.h | 6 +-- include/net/scm.h | 1 + io_uring/io_uring.c | 5 ++- net/core/scm.c | 5 +++ net/unix/af_unix.c | 10 +++-- net/unix/garbage.c | 84 ++++++++++++++++++---------------------- net/unix/scm.c | 34 ++++++++-------- 8 files changed, 74 insertions(+), 75 deletions(-) Tested-by: Ivan Babrou