From patchwork Wed May 10 16:24:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 92210 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp3764071vqo; Wed, 10 May 2023 09:41:38 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ6X3A3bEkj6aVhxpmodAM9k3d6BNgSG6lqENvUzmcbcbgE6+WhZSVgl3ddcjs9xLfDeF5Hm X-Received: by 2002:a17:902:ab89:b0:1ad:1c22:1b53 with SMTP id f9-20020a170902ab8900b001ad1c221b53mr2165516plr.40.1683736898404; Wed, 10 May 2023 09:41:38 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1683736898; cv=none; d=google.com; s=arc-20160816; b=qyi/Xcq+Rw9pqVglhLj1sZ7ziMIWi5H/bUXxzLfcF5zstTN8Ymga+BKYtf8SHDhDnj Nv6LRIc3rzatvpWgjnrneNCTGiYrtDjiv7SuP+8W+92WrTkHamYnpUVozqLQ2G77bwAq MdT3OOJYpufHu3+HSQDtjhbvc9Nz1MBfHae1LvFxAIY29kanhJF8CL7QV4EWsdUB3Gr9 l6Ev+DXBxuGOD/pPj6ZB1ISRfBA/P6nDPrDtVO11kfJ9kwQNcfVJNwpn7q0ZmDp8qRtI iY397c489N3RuXKS+d8ui+EGpfVJ3kuNCtFqL8LPadA0fBlwBf26yDVdi5v3bQjaZea4 DNdA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=s7LQ/MJdtEIKEjvZPOrhyx4wxiuukXQHpH7ygzDX0VI=; b=yN9Vgn6d/PCXm1OPqJvq0yntAanTGFER/1cKgCrDCo+ULT6IjDut+fKzIWGLme3Bff QWSpR1m24XhPyKpI3p6OOWZYM2mEuwryoVsFQ/WCkFsbNM9ZicoqYIZ0lNds6pNUXowu QMLcESNsusaIV3mYaBnRtlmi7V6P97JWtJAVVk+UYhyx+JuiCRFGtAkiKDZxYAMHoolm 6tbOI6OUUGb/8HHsSCYx02IgwJK86WI5QTSQ0nslR+UsrE5f/oYVgvcWCxKjxCNHBFJn ep7eP89Ea26RWgJ0m2cRlRg0P4EsjvvT0bEB+JWNm2gPWfg62oBEi8v1ddK048/MDDtF mw3Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=pM5PoYrt; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id i2-20020a17090332c200b001a05347d092si4721731plr.642.2023.05.10.09.41.22; Wed, 10 May 2023 09:41:38 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=pM5PoYrt; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229447AbjEJQf0 (ORCPT + 99 others); Wed, 10 May 2023 12:35:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56712 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235757AbjEJQfX (ORCPT ); Wed, 10 May 2023 12:35:23 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 516787D8B; Wed, 10 May 2023 09:35:16 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D803F63F22; Wed, 10 May 2023 16:35:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4BEBAC4339C; Wed, 10 May 2023 16:35:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1683736515; bh=D/zx5C3wzjM0zZXbvIgMONVy5BqICz3TUA896+jQLlk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pM5PoYrty7yCH0RwPEETSGMTPtIBfqrDnxC1Of4QRrUvRYpcqhfo6CnKstuBdrJ1p Y8cTCUfcyPT9HCkODQhlW0ldspb1r8HMngbvPk58T/mxUVoWPYO0S8YT67WaBZmkkS 0guf3w7XP62n7Ufw6skcC1kTsgNS41PBKc3ftTIiOzKTnQIUvBMw98EWCV5UsjLA28 6w71JHcobAAmgW+ISjtdcEJaao3XBzY1Aov9TpeRhc+o6IRxbfwVCAXdnvBBH/xOYT JabESi0GONWMCoSl4Pw7TmgOCBO1uEBG3nscObwQzvG6izQ9zkRZEu5L++sWiusIiK gcuU64Yx8J6dw== From: Jisheng Zhang To: Sebastian Andrzej Siewior , Thomas Gleixner , Schaffner Tobias , Paul Walmsley , Palmer Dabbelt , Albert Ou , Arnd Bergmann Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Subject: [PATCH RT 1/3] asm-generic/preempt: also check preempt_lazy_count for should_resched() etc. Date: Thu, 11 May 2023 00:24:04 +0800 Message-Id: <20230510162406.1955-2-jszhang@kernel.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230510162406.1955-1-jszhang@kernel.org> References: <20230510162406.1955-1-jszhang@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1765526101742645525?= X-GMAIL-MSGID: =?utf-8?q?1765526101742645525?= lazy preempt count is great mechanism to help ordinary SCHED_OTHER tasks' throughput Under PREEMPT_RT. But current implementation relies on each arch-specific code to check the preempt_lazy_count in should_resched() and __preempt_count_dec_and_test(), if the arch, e.g riscv use the asm-generic preempt implementation, it losts the great lazy preempt mechanism. Signed-off-by: Jisheng Zhang --- include/asm-generic/preempt.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/include/asm-generic/preempt.h b/include/asm-generic/preempt.h index b4d43a4af5f7..b583e7c38ccf 100644 --- a/include/asm-generic/preempt.h +++ b/include/asm-generic/preempt.h @@ -59,6 +59,11 @@ static __always_inline void __preempt_count_sub(int val) *preempt_count_ptr() -= val; } +#ifdef CONFIG_PREEMPT_LAZY +#define preempt_lazy_count() (current_thread_info()->preempt_lazy_count) +#else +#define preempt_lazy_count() (0) +#endif static __always_inline bool __preempt_count_dec_and_test(void) { /* @@ -66,7 +71,7 @@ static __always_inline bool __preempt_count_dec_and_test(void) * operations; we cannot use PREEMPT_NEED_RESCHED because it might get * lost. */ - return !--*preempt_count_ptr() && tif_need_resched(); + return !--*preempt_count_ptr() && !preempt_lazy_count() && tif_need_resched(); } /* @@ -75,6 +80,7 @@ static __always_inline bool __preempt_count_dec_and_test(void) static __always_inline bool should_resched(int preempt_offset) { return unlikely(preempt_count() == preempt_offset && + !preempt_lazy_count() && tif_need_resched()); } From patchwork Wed May 10 16:24:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 92215 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp3770980vqo; Wed, 10 May 2023 09:52:43 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ7gfwNAnRSbRi1Wf7aUSg947aa7XhZdluRJXEaQNErZYlNpNu5Ek670bpnnC1kBs9KvzxCH X-Received: by 2002:a05:6a00:acc:b0:63b:435f:134a with SMTP id c12-20020a056a000acc00b0063b435f134amr24550727pfl.28.1683737563068; Wed, 10 May 2023 09:52:43 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1683737563; cv=none; d=google.com; s=arc-20160816; b=MDyz4Os39/QbEcWEvh6h8c1R/dJKmBVYRSmefyjh2bHke6tpohyFHw6PEkRri77YZK oXUPIDnoUo+qPYcsI5k5boU6c8wM9+Yc8nHt6zG+l3d34Mn5O5fGE8sC1CF2VVg1+R1K 3GQtbRYzReM7ntHyz4+e7tt0lX605GHY+ntYDTzBjT6DO0Sv17KWnFpRcrYsmSDd6VHn 3dvRyDZvGixBXh/5XZ/DUL2tVriygyvoFEsyXwSQvcT3IvBaFtb+7ZYDUoFrPzii5Fbh BDdDDZj13wcW7qRhiXFONSPjqVMTb3hHHByM2R78JJU/MgWBjATnz9hq+UMj/r4612uH JONQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=Q575LLnIhcsZq6T8OTTaonncHz3ResfKDRRqH/RUDTs=; b=vrVlAU7aq2eNqmbKeDqfg5hpXJJQ+SS1PNmyI8s5E9tXKk8qE8iS6LJ88E8sSceHXi xkzFy9zqrspgP2vInakoevDF2tSvB3Q3WjFwtFpCZdtm0dIUhuJeHJB+EchWMKXT39bG QTlqnuxDKjsF4Ox+Ov6HrrVOYnX4CmKcB+hhSvWX/jX+sRmza6Np3EM4csjEU+ED3AIL dd0khNzLTOpIkm9YVIH3nSFt9hSKgBmcpNvOUXOSygGj1TyV6QNXaKOhbedJ34l169PH 5ttGquNHSvRp6MVNvqIpV/Vfl5qZTz/ivQiJYRbtoX0Zsn32usLrHVnoJKwnfziOK8fj K8ug== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=jt9AEIH+; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id d1-20020aa797a1000000b0063b7c4435bcsi5645356pfq.50.2023.05.10.09.52.21; Wed, 10 May 2023 09:52:43 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=jt9AEIH+; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235881AbjEJQfb (ORCPT + 99 others); Wed, 10 May 2023 12:35:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56750 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235791AbjEJQfY (ORCPT ); Wed, 10 May 2023 12:35:24 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1A7E87EF5; Wed, 10 May 2023 09:35:19 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id A084964A05; Wed, 10 May 2023 16:35:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B40CFC433D2; Wed, 10 May 2023 16:35:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1683736518; bh=rdwY2xPsMRjdNsYlKkpqfjxeCKdDEMu/9hjRoCJFxdM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jt9AEIH+Dyddi6upgEhmzbo0fW2sCgcsIL5E6plZniKbKA3pV+N8YJjYfNbgcfwfI pU1FPgMKrfhVZfDOq4TC9Q91xNagOIHErXf/eUG2TF2iqO+4KO9SGWCkhZJHqVxbmn 1PkCFUgUyAHLUXY2Vvb2OLi7TpcCFCcr0JhL9dkLRaUOnRSpf3OZFHe6ZWj5H0OXKf R4VZ6XsZHX6vPyZ6rpZNo10EDdTAMHqE807ESgfFQIjq6IhlEoSjMFntg6+cYWX0Ws CBxsWm9Qc4APR2g/yPNAeym0GCuDnX9NzSsw6YgWtAu37F4NQw7Wc7K9SB/MAaSPfy 6xuhdKDTG25lg== From: Jisheng Zhang To: Sebastian Andrzej Siewior , Thomas Gleixner , Schaffner Tobias , Paul Walmsley , Palmer Dabbelt , Albert Ou , Arnd Bergmann Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Subject: [PATCH RT 2/3] riscv: add lazy preempt support Date: Thu, 11 May 2023 00:24:05 +0800 Message-Id: <20230510162406.1955-3-jszhang@kernel.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230510162406.1955-1-jszhang@kernel.org> References: <20230510162406.1955-1-jszhang@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1765526798970151731?= X-GMAIL-MSGID: =?utf-8?q?1765526798970151731?= Implement the lazy preempt for riscv. Signed-off-by: Jisheng Zhang --- arch/riscv/Kconfig | 1 + arch/riscv/include/asm/thread_info.h | 5 ++++- arch/riscv/kernel/asm-offsets.c | 1 + 3 files changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 348c0fa1fc8c..89e9d9fb35c4 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -118,6 +118,7 @@ config RISCV select HAVE_PERF_REGS select HAVE_PERF_USER_STACK_DUMP select HAVE_POSIX_CPU_TIMERS_TASK_WORK + select HAVE_PREEMPT_LAZY select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_RSEQ select HAVE_STACKPROTECTOR diff --git a/arch/riscv/include/asm/thread_info.h b/arch/riscv/include/asm/thread_info.h index e0d202134b44..c5e9223e9b91 100644 --- a/arch/riscv/include/asm/thread_info.h +++ b/arch/riscv/include/asm/thread_info.h @@ -59,6 +59,7 @@ extern unsigned long spin_shadow_stack; struct thread_info { unsigned long flags; /* low level flags */ int preempt_count; /* 0=>preemptible, <0=>BUG */ + int preempt_lazy_count; /* 0=>preemptible, <0=>BUG */ /* * These stack pointers are overwritten on every system call or * exception. SP is also saved to the stack it can be recovered when @@ -90,6 +91,7 @@ struct thread_info { * - pending work-to-be-done flags are in lowest half-word * - other flags in upper half-word(s) */ +#define TIF_NEED_RESCHED_LAZY 0 /* lazy rescheduling */ #define TIF_NOTIFY_RESUME 1 /* callback before returning to user */ #define TIF_SIGPENDING 2 /* signal pending */ #define TIF_NEED_RESCHED 3 /* rescheduling necessary */ @@ -104,9 +106,10 @@ struct thread_info { #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) #define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL) #define _TIF_UPROBE (1 << TIF_UPROBE) +#define _TIF_NEED_RESCHED_LAZY (1 << TIF_NEED_RESCHED_LAZY) #define _TIF_WORK_MASK \ (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | _TIF_NEED_RESCHED | \ - _TIF_NOTIFY_SIGNAL | _TIF_UPROBE) + _TIF_NEED_RESCHED_LAZY | _TIF_NOTIFY_SIGNAL | _TIF_UPROBE) #endif /* _ASM_RISCV_THREAD_INFO_H */ diff --git a/arch/riscv/kernel/asm-offsets.c b/arch/riscv/kernel/asm-offsets.c index d6a75aac1d27..1f8cccacb44e 100644 --- a/arch/riscv/kernel/asm-offsets.c +++ b/arch/riscv/kernel/asm-offsets.c @@ -36,6 +36,7 @@ void asm_offsets(void) OFFSET(TASK_THREAD_S11, task_struct, thread.s[11]); OFFSET(TASK_TI_FLAGS, task_struct, thread_info.flags); OFFSET(TASK_TI_PREEMPT_COUNT, task_struct, thread_info.preempt_count); + OFFSET(TASK_TI_PREEMPT_LAZY_COUNT, task_struct, thread_info.preempt_lazy_count); OFFSET(TASK_TI_KERNEL_SP, task_struct, thread_info.kernel_sp); OFFSET(TASK_TI_USER_SP, task_struct, thread_info.user_sp); From patchwork Wed May 10 16:24:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 92211 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp3764146vqo; Wed, 10 May 2023 09:41:45 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ7fMzV+hd138oZ/OjBAwn8Uy58PC4m6fiPvS/fxSn8R8wfqz3zPh+nxARgcqI/DD+d8uwJE X-Received: by 2002:a05:6a20:8f06:b0:ff:e397:a87a with SMTP id b6-20020a056a208f0600b000ffe397a87amr18547396pzk.33.1683736904752; Wed, 10 May 2023 09:41:44 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1683736904; cv=none; d=google.com; s=arc-20160816; b=EdPct0CHf7/4raQLHLoHjs1GiIc2HmECxEQy1+7hvQmMsO5wkTuw6hRpcyJVb1p7UW GmelVHp6xVSZ4MVVeP5Wtx1veaPJMFUjptJchFZgT4wUTx7v77+guV979Pz+/c0UP5n5 heJq2pqDCocKk1iOIHzbYajHDzm2G2y5bFA7/PTaXoR5ZIGPkR70tp7om1l/UJcaFcZ1 O3PUjKZ1ie+eyC7DtkJ/KvAGAoYQgtB8x140vnaRECghw+4yj4Kydm5N5ZKKLFI0otdJ bdSMBP68Gz0KPDnClSu1jVYq9Q9tGtPr5YOkzulgjfq7YRzM5/sHd3C6uh6zoHHdug80 8SIQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=ykyhww9A/CIZvRNYYQ+SVmupXTWvrRUq4+rxZ3rLVOU=; b=BlovorGXm5CR4TN7/1t3UOpOBsP28J6lQFLwyUT9w3gpdtDwP6pjJ5p2v8JmjbUrh2 pGMyqn6WVpAbY9R4YBM9GFA88QDhOTsckmwMYJZ0O7J/kfSMnWXz1pLqQNTtv4S2ZO3f zPylWai5+k59U6cCpXtMqyQKpWw4SrSveg/83HMEXSrMRsQqDgvYMf8A4uNFLRM9dcLR mvruEvFfSm6/P3hVHtSK2KLNDJApwl9ysRsDklJyZ5wIjho/uJ7Q/Be+ec8gtzlOCUjo JWHCg3lJM8Jt9KKpYHmTSS9jGAg+bsqs/aNzn2QROcES/zLsWsBAc/yBKwZcCXzwLZqy lXQQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=nCemHidx; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id l1-20020a639841000000b00524b0097b6csi4510805pgo.816.2023.05.10.09.41.29; Wed, 10 May 2023 09:41:44 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=nCemHidx; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235984AbjEJQfl (ORCPT + 99 others); Wed, 10 May 2023 12:35:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56722 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235814AbjEJQf1 (ORCPT ); Wed, 10 May 2023 12:35:27 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4370183FF; Wed, 10 May 2023 09:35:22 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C27E4649EF; Wed, 10 May 2023 16:35:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D2B1EC433D2; Wed, 10 May 2023 16:35:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1683736521; bh=g7XPNarzH/wqmr6jhG8yJoDzEIyJ6X2782gc+T1vwWY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nCemHidxkEx6i5wrALhCiB1N0fHoOy8JS21FwUzqiktdz70tFZZ/3G4V+LmeDhyCg 3BbgC3OUBY8ApUQWdlTKT1qZuq9oCWDpBcyFXMag77sWFKMbhqUXntGuT5PkcCr3h1 vpOVnlTDW7Y77cVA01MxS6o0pIy3LvCaboxMsWdGfAYKtLHU8FbA6J/3BUOf5H53rb 1xYq93qM1j+0U23ySNHGAVLcuIJYAnmDxXunzoYjzXBjktG39OMo5LR2L8nj4q30cC aWEQ4yoi9B60GvVyy1vBbz0gA3ly8xvvW89KqttSsxAFcq2rw9QMj7FB3fZGKi0s3o 2emM8Elpu7nFw== From: Jisheng Zhang To: Sebastian Andrzej Siewior , Thomas Gleixner , Schaffner Tobias , Paul Walmsley , Palmer Dabbelt , Albert Ou , Arnd Bergmann Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Subject: [PATCH RT 3/3] riscv: Allow to enable RT Date: Thu, 11 May 2023 00:24:06 +0800 Message-Id: <20230510162406.1955-4-jszhang@kernel.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230510162406.1955-1-jszhang@kernel.org> References: <20230510162406.1955-1-jszhang@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1765526109051968451?= X-GMAIL-MSGID: =?utf-8?q?1765526109051968451?= Now, it's ready to enable RT on riscv. Signed-off-by: Jisheng Zhang --- arch/riscv/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 89e9d9fb35c4..622561d1e388 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -42,6 +42,7 @@ config RISCV select ARCH_SUPPORTS_DEBUG_PAGEALLOC if MMU select ARCH_SUPPORTS_HUGETLBFS if MMU select ARCH_SUPPORTS_PAGE_TABLE_CHECK if MMU + select ARCH_SUPPORTS_RT select ARCH_USE_MEMTEST select ARCH_USE_QUEUED_RWLOCKS select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU