From: Ankur Arora <ankur.a.arora@oracle.com>
To: Will Deacon <will@kernel.org>
Cc: Ankur Arora <ankur.a.arora@oracle.com>,
linux-pm@vger.kernel.org, kvm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, catalin.marinas@arm.com,
tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
dave.hansen@linux.intel.com, 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, mtosatti@redhat.com,
sudeep.holla@arm.com, cl@gentwo.org, misono.tomohiro@fujitsu.com,
maobibo@loongson.cn, joao.m.martins@oracle.com,
boris.ostrovsky@oracle.com, konrad.wilk@oracle.com
Subject: Re: [PATCH v7 07/10] arm64: define TIF_POLLING_NRFLAG
Date: Tue, 03 Sep 2024 14:13:53 -0700 [thread overview]
Message-ID: <877cbso2y6.fsf@oracle.com> (raw)
In-Reply-To: <20240903081040.GA12270@willie-the-truck>
Will Deacon <will@kernel.org> writes:
> On Fri, Aug 30, 2024 at 03:28:41PM -0700, Ankur Arora wrote:
>> 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>
>> Reviewed-by: Christoph Lameter <cl@linux.com>
>> Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
>> ---
>> arch/arm64/include/asm/thread_info.h | 2 ++
>> 1 file changed, 2 insertions(+)
>
> Acked-by: Will Deacon <will@kernel.org>
Thanks!
--
ankur
next prev parent reply other threads:[~2024-09-03 21:15 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-30 22:28 [PATCH v7 00/10] Enable haltpoll on arm64 Ankur Arora
2024-08-30 22:28 ` [PATCH v7 01/10] cpuidle/poll_state: poll via smp_cond_load_relaxed() Ankur Arora
2024-08-30 22:28 ` [PATCH v7 02/10] cpuidle: rename ARCH_HAS_CPU_RELAX to ARCH_HAS_OPTIMIZED_POLL Ankur Arora
2024-08-30 22:28 ` [PATCH v7 03/10] Kconfig: move ARCH_HAS_OPTIMIZED_POLL to arch/Kconfig Ankur Arora
2024-08-30 22:28 ` [PATCH v7 04/10] cpuidle-haltpoll: define arch_haltpoll_want() Ankur Arora
2024-08-30 22:28 ` [PATCH v7 05/10] governors/haltpoll: drop kvm_para_available() check Ankur Arora
2024-08-30 22:28 ` [PATCH v7 06/10] cpuidle-haltpoll: condition on ARCH_CPUIDLE_HALTPOLL Ankur Arora
2024-08-30 22:28 ` [PATCH v7 07/10] arm64: define TIF_POLLING_NRFLAG Ankur Arora
2024-09-03 8:10 ` Will Deacon
2024-09-03 21:13 ` Ankur Arora [this message]
2024-08-30 22:28 ` [PATCH v7 08/10] arm64: idle: export arch_cpu_idle Ankur Arora
2024-09-03 8:14 ` Will Deacon
2024-08-30 22:28 ` [PATCH v7 09/10] arm64: support cpuidle-haltpoll Ankur Arora
2024-09-03 8:13 ` Will Deacon
2024-09-03 21:12 ` Ankur Arora
2024-08-30 22:28 ` [PATCH v7 10/10] cpuidle/poll_state: limit POLL_IDLE_RELAX_COUNT on arm64 Ankur Arora
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