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From: Jens Axboe <axboe@kernel.dk>
To: linux-kernel@vger.kernel.org, io-uring@vger.kernel.org
Cc: peterz@infradead.org, oleg@redhat.com, tglx@linutronix.de,
	Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 3/4] x86: wire up TIF_NOTIFY_SIGNAL
Date: Mon, 26 Oct 2020 14:32:29 -0600
Message-ID: <20201026203230.386348-4-axboe@kernel.dk> (raw)
In-Reply-To: <20201026203230.386348-1-axboe@kernel.dk>

All we need to do is define _TIF_NOTIFY_SIGNAL, the generic entry code
already handles everything else for us.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 arch/x86/include/asm/thread_info.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index 44733a4bfc42..b3b32f4c4d2d 100644
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -93,6 +93,7 @@ struct thread_info {
 #define TIF_NOTSC		16	/* TSC is not accessible in userland */
 #define TIF_IA32		17	/* IA32 compatibility process */
 #define TIF_SLD			18	/* Restore split lock detection on context switch */
+#define TIF_NOTIFY_SIGNAL	19	/* signal notifications exist */
 #define TIF_MEMDIE		20	/* is terminating due to OOM killer */
 #define TIF_POLLING_NRFLAG	21	/* idle is polling for TIF_NEED_RESCHED */
 #define TIF_IO_BITMAP		22	/* uses I/O bitmap */
@@ -122,6 +123,7 @@ struct thread_info {
 #define _TIF_NOTSC		(1 << TIF_NOTSC)
 #define _TIF_IA32		(1 << TIF_IA32)
 #define _TIF_SLD		(1 << TIF_SLD)
+#define _TIF_NOTIFY_SIGNAL	(1 << TIF_NOTIFY_SIGNAL)
 #define _TIF_POLLING_NRFLAG	(1 << TIF_POLLING_NRFLAG)
 #define _TIF_IO_BITMAP		(1 << TIF_IO_BITMAP)
 #define _TIF_FORCED_TF		(1 << TIF_FORCED_TF)
-- 
2.29.0


  parent reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-26 20:32 [PATCHSET v6a 0/4] Add support for TIF_NOTIFY_SIGNAL Jens Axboe
2020-10-26 20:32 ` [PATCH 1/4] kernel: add task_sigpending() helper Jens Axboe
2020-10-26 20:32 ` [PATCH 2/4] kernel: add support for TIF_NOTIFY_SIGNAL Jens Axboe
2020-10-26 20:32 ` Jens Axboe [this message]
2020-10-26 20:32 ` [PATCH 4/4] task_work: use TIF_NOTIFY_SIGNAL if available Jens Axboe
  -- strict thread matches above, loose matches on Subject: below --
2020-10-16 15:45 [PATCHSET v6] Add support for TIF_NOTIFY_SIGNAL Jens Axboe
2020-10-16 15:45 ` [PATCH 3/4] x86: wire up TIF_NOTIFY_SIGNAL Jens Axboe

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