From: Ankur Arora <ankur.a.arora@oracle.com>
To: linux-pm@vger.kernel.org, kvm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: catalin.marinas@arm.com, will@kernel.org, tglx@linutronix.de,
mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com,
pbonzini@redhat.com, wanpengli@tencent.com, vkuznets@redhat.com,
rafael@kernel.org, daniel.lezcano@linaro.org,
peterz@infradead.org, arnd@arndb.de, lenb@kernel.org,
mark.rutland@arm.com, harisokn@amazon.com,
joao.m.martins@oracle.com, boris.ostrovsky@oracle.com,
konrad.wilk@oracle.com, ankur.a.arora@oracle.com
Subject: [PATCH 7/9] arm64: define TIF_POLLING_NRFLAG
Date: Tue, 30 Apr 2024 11:37:28 -0700 [thread overview]
Message-ID: <20240430183730.561960-8-ankur.a.arora@oracle.com> (raw)
In-Reply-To: <20240430183730.561960-1-ankur.a.arora@oracle.com>
From: Joao Martins <joao.m.martins@oracle.com>
Commit 842514849a61 ("arm64: Remove TIF_POLLING_NRFLAG") had removed
TIF_POLLING_NRFLAG because arm64 only supported non-polled idling via
cpu_do_idle().
To add support for polling via cpuidle-haltpoll, we want to use the
standard poll_idle() interface, which sets TIF_POLLING_NRFLAG while
polling.
Reuse the same bit to define TIF_POLLING_NRFLAG.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Mihai Carabas <mihai.carabas@oracle.com>
Signed-off-by: Ankur Arora <ankur.a.arora@oracle.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..23ff72168e48 100644
--- a/arch/arm64/include/asm/thread_info.h
+++ b/arch/arm64/include/asm/thread_info.h
@@ -69,6 +69,7 @@ void arch_setup_new_exec(void);
#define TIF_SYSCALL_TRACEPOINT 10 /* syscall tracepoint for ftrace */
#define TIF_SECCOMP 11 /* syscall secure computing */
#define TIF_SYSCALL_EMU 12 /* syscall emulation active */
+#define TIF_POLLING_NRFLAG 16 /* set while polling in poll_idle() */
#define TIF_MEMDIE 18 /* is terminating due to OOM killer */
#define TIF_FREEZE 19
#define TIF_RESTORE_SIGMASK 20
@@ -91,6 +92,7 @@ void arch_setup_new_exec(void);
#define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
#define _TIF_SECCOMP (1 << TIF_SECCOMP)
#define _TIF_SYSCALL_EMU (1 << TIF_SYSCALL_EMU)
+#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
#define _TIF_UPROBE (1 << TIF_UPROBE)
#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
#define _TIF_32BIT (1 << TIF_32BIT)
--
2.39.3
next prev parent reply other threads:[~2024-04-30 18:38 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-30 18:37 [PATCH 0/9] Enable haltpoll for arm64 Ankur Arora
2024-04-30 18:37 ` [PATCH 1/9] cpuidle: rename ARCH_HAS_CPU_RELAX to ARCH_HAS_OPTIMIZED_POLL Ankur Arora
2024-05-02 1:33 ` Christoph Lameter (Ampere)
2024-05-03 4:13 ` Ankur Arora
2024-05-03 17:07 ` Christoph Lameter (Ampere)
2024-05-06 21:27 ` Ankur Arora
2024-04-30 18:37 ` [PATCH 2/9] Kconfig: move ARCH_HAS_OPTIMIZED_POLL to arch/Kconfig Ankur Arora
2024-04-30 18:37 ` [PATCH 3/9] cpuidle-haltpoll: condition on ARCH_CPUIDLE_HALTPOLL Ankur Arora
2024-04-30 18:37 ` [PATCH 4/9] cpuidle-haltpoll: define arch_haltpoll_supported() Ankur Arora
2024-05-01 11:48 ` kernel test robot
2024-04-30 18:37 ` [PATCH 5/9] governors/haltpoll: drop kvm_para_available() check Ankur Arora
2024-04-30 18:37 ` [PATCH 6/9] cpuidle/poll_state: poll via smp_cond_load_relaxed() Ankur Arora
2024-04-30 18:37 ` Ankur Arora [this message]
2024-04-30 18:37 ` [PATCH 8/9] arm64: support cpuidle-haltpoll Ankur Arora
2024-04-30 18:37 ` [PATCH 9/9] cpuidle/poll_state: limit POLL_IDLE_RELAX_COUNT on arm64 Ankur Arora
2024-04-30 18:56 ` [PATCH 0/9] Enable haltpoll for arm64 Ankur Arora
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