linux-kernel - [PATCH 1/3] arm64: Add TIF_POLLING

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Message-ID: <20240402014706.3969151-1-harisokn@amazon.com>
Date: Mon, 1 Apr 2024 20:47:04 -0500
From: Haris Okanovic <harisokn@...zon.com>
To: <linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>,
	<linux-assembly@...r.kernel.org>
CC: <peterz@...radead.org>, Haris Okanovic <harisokn@...zon.com>
Subject: [PATCH 1/3] arm64: Add TIF_POLLING_NRFLAG

TIF_POLLING_NRFLAG was removed from arm64 as there were no polling
idle states. Add back TIF_POLLING_NRFLAG in preparation for an arm64
cpuidle driver which supports polling.

Signed-off-by: Haris Okanovic <harisokn@...zon.com>
---
 arch/arm64/include/asm/thread_info.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h
index e72a3bf9e563..ab22c7d1967e 100644
--- a/arch/arm64/include/asm/thread_info.h
+++ b/arch/arm64/include/asm/thread_info.h
@@ -81,6 +81,7 @@ void arch_setup_new_exec(void);
 #define TIF_SME			27	/* SME in use */
 #define TIF_SME_VL_INHERIT	28	/* Inherit SME vl_onexec across exec */
 #define TIF_KERNEL_FPSTATE	29	/* Task is in a kernel mode FPSIMD section */
+#define TIF_POLLING_NRFLAG	30
 
 #define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
@@ -97,6 +98,7 @@ void arch_setup_new_exec(void);
 #define _TIF_SVE		(1 << TIF_SVE)
 #define _TIF_MTE_ASYNC_FAULT	(1 << TIF_MTE_ASYNC_FAULT)
 #define _TIF_NOTIFY_SIGNAL	(1 << TIF_NOTIFY_SIGNAL)
+#define _TIF_POLLING_NRFLAG	(1 << TIF_POLLING_NRFLAG)
 
 #define _TIF_WORK_MASK		(_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
 				 _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \
-- 
2.34.1