From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA9D1C63798 for ; Mon, 16 Nov 2020 17:42:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7BC0B222E8 for ; Mon, 16 Nov 2020 17:42:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387908AbgKPRm0 (ORCPT ); Mon, 16 Nov 2020 12:42:26 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:34282 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387899AbgKPRmY (ORCPT ); Mon, 16 Nov 2020 12:42:24 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: krisman) with ESMTPSA id 7F99C1F45E49 From: Gabriel Krisman Bertazi To: tglx@linutronix.de Cc: hch@infradead.org, mingo@redhat.com, keescook@chromium.org, arnd@arndb.de, luto@amacapital.net, wad@chromium.org, rostedt@goodmis.org, paul@paul-moore.com, eparis@redhat.com, oleg@redhat.com, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org, Gabriel Krisman Bertazi , kernel@collabora.com Subject: [PATCH v2 02/10] entry: Expose helpers to migrate TIF to SYSCALL_WORK flags Date: Mon, 16 Nov 2020 12:41:58 -0500 Message-Id: <20201116174206.2639648-3-krisman@collabora.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201116174206.2639648-1-krisman@collabora.com> References: <20201116174206.2639648-1-krisman@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org With the goal to split the syscall work related flags into a separate field that is architecture independent, expose transitional helpers that resolve to either the TIF flags or to the corresponding SYSCALL_WORK flags. This will allow architectures to migrate only when they port to the generic syscall entry code. Signed-off-by: Gabriel Krisman Bertazi --- Changes since v2: - Drop bogus cast to ulong (hch) - Fix subsystem prefix (tglx) --- include/linux/thread_info.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index e93e249a4e9b..f2d78de55840 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -97,6 +97,36 @@ static inline int test_ti_thread_flag(struct thread_info *ti, int flag) #define test_thread_flag(flag) \ test_ti_thread_flag(current_thread_info(), flag) +#ifdef CONFIG_GENERIC_ENTRY +#define set_syscall_work(fl) \ + set_bit(SYSCALL_WORK_BIT_##fl, ¤t_thread_info()->syscall_work) +#define test_syscall_work(fl) \ + test_bit(SYSCALL_WORK_BIT_##fl, ¤t_thread_info()->syscall_work) +#define clear_syscall_work(fl) \ + clear_bit(SYSCALL_WORK_BIT_##fl, ¤t_thread_info()->syscall_work) + +#define set_task_syscall_work(t, fl) \ + set_bit(SYSCALL_WORK_BIT_##fl, &task_thread_info(t)->syscall_work) +#define test_task_syscall_work(t, fl) \ + test_bit(SYSCALL_WORK_BIT_##fl, &task_thread_info(t)->syscall_work) +#define clear_task_syscall_work(t, fl) \ + clear_bit(SYSCALL_WORK_BIT_##fl, &task_thread_info(t)->syscall_work) +#else +#define set_syscall_work(fl) \ + set_ti_thread_flag(current_thread_info(), SYSCALL_WORK_##fl) +#define test_syscall_work(fl) \ + test_ti_thread_flag(current_thread_info(), SYSCALL_WORK_##fl) +#define clear_syscall_work(fl) \ + clear_ti_thread_flag(current_thread_info(), SYSCALL_WORK_##fl) + +#define set_task_syscall_work(t, fl) \ + set_ti_thread_flag(task_thread_info(t), TIF_##fl) +#define test_task_syscall_work(t, fl) \ + test_ti_thread_flag(task_thread_info(t), TIF_##fl) +#define clear_task_syscall_work(t, fl) \ + clear_ti_thread_flag(task_thread_info(t), TIF_##fl) +#endif /* CONFIG_GENERIC_ENTRY */ + #define tif_need_resched() test_thread_flag(TIF_NEED_RESCHED) #ifndef CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES -- 2.29.2