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From: "Alex Bennée" <alex.bennee@linaro.org>
To: Dave Martin <Dave.Martin@arm.com>
Cc: linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org,
	libc-alpha@sourceware.org,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Szabolcs Nagy <szabolcs.nagy@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Richard Sandiford <richard.sandiford@arm.com>,
	kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH 05/27] arm64: fpsimd: Simplify uses of {set, clear}_ti_thread_flag()
Date: Fri, 18 Aug 2017 17:36:27 +0100	[thread overview]
Message-ID: <87efs8lto4.fsf@linaro.org> (raw)
In-Reply-To: <1502280338-23002-6-git-send-email-Dave.Martin@arm.com>


Dave Martin <Dave.Martin@arm.com> writes:

> The existing FPSIMD context switch code contains a couple of
> instances of {set,clear}_ti_thread(task_thread_info(task)).  Since
> there are thread flag manipulators that operate directly on
> task_struct, this verbosity isn't strictly needed.
>
> For consistency, this patch simplifies the affected calls.  This
> should have no impact on behaviour.
>
> Signed-off-by: Dave Martin <Dave.Martin@arm.com>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

> ---
>  arch/arm64/kernel/fpsimd.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
> index 138fcfa..9c1f268e 100644
> --- a/arch/arm64/kernel/fpsimd.c
> +++ b/arch/arm64/kernel/fpsimd.c
> @@ -159,11 +159,9 @@ void fpsimd_thread_switch(struct task_struct *next)
>
>  		if (__this_cpu_read(fpsimd_last_state) == st
>  		    && st->cpu == smp_processor_id())
> -			clear_ti_thread_flag(task_thread_info(next),
> -					     TIF_FOREIGN_FPSTATE);
> +			clear_tsk_thread_flag(next, TIF_FOREIGN_FPSTATE);
>  		else
> -			set_ti_thread_flag(task_thread_info(next),
> -					   TIF_FOREIGN_FPSTATE);
> +			set_tsk_thread_flag(next, TIF_FOREIGN_FPSTATE);
>  	}
>  }

WARNING: multiple messages have this Message-ID (diff)
From: "Alex Bennée" <alex.bennee@linaro.org>
To: Dave Martin <Dave.Martin@arm.com>
Cc: linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org,
	libc-alpha@sourceware.org,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Szabolcs Nagy <szabolcs.nagy@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Richard Sandiford <richard.sandiford@arm.com>,
	kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH 05/27] arm64: fpsimd: Simplify uses of {set, clear}_ti_thread_flag()
Date: Fri, 18 Aug 2017 17:36:27 +0100	[thread overview]
Message-ID: <87efs8lto4.fsf@linaro.org> (raw)
Message-ID: <20170818163627.v9cJxDEGbbH5juxO4cToBZGGjSINIpuOILpeeTbhcBA@z> (raw)
In-Reply-To: <1502280338-23002-6-git-send-email-Dave.Martin@arm.com>


Dave Martin <Dave.Martin@arm.com> writes:

> The existing FPSIMD context switch code contains a couple of
> instances of {set,clear}_ti_thread(task_thread_info(task)).  Since
> there are thread flag manipulators that operate directly on
> task_struct, this verbosity isn't strictly needed.
>
> For consistency, this patch simplifies the affected calls.  This
> should have no impact on behaviour.
>
> Signed-off-by: Dave Martin <Dave.Martin@arm.com>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

> ---
>  arch/arm64/kernel/fpsimd.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
> index 138fcfa..9c1f268e 100644
> --- a/arch/arm64/kernel/fpsimd.c
> +++ b/arch/arm64/kernel/fpsimd.c
> @@ -159,11 +159,9 @@ void fpsimd_thread_switch(struct task_struct *next)
>
>  		if (__this_cpu_read(fpsimd_last_state) == st
>  		    && st->cpu == smp_processor_id())
> -			clear_ti_thread_flag(task_thread_info(next),
> -					     TIF_FOREIGN_FPSTATE);
> +			clear_tsk_thread_flag(next, TIF_FOREIGN_FPSTATE);
>  		else
> -			set_ti_thread_flag(task_thread_info(next),
> -					   TIF_FOREIGN_FPSTATE);
> +			set_tsk_thread_flag(next, TIF_FOREIGN_FPSTATE);
>  	}
>  }


--
Alex Bennée

WARNING: multiple messages have this Message-ID (diff)
From: alex.bennee@linaro.org (Alex Bennée)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 05/27] arm64: fpsimd: Simplify uses of {set, clear}_ti_thread_flag()
Date: Fri, 18 Aug 2017 17:36:27 +0100	[thread overview]
Message-ID: <87efs8lto4.fsf@linaro.org> (raw)
In-Reply-To: <1502280338-23002-6-git-send-email-Dave.Martin@arm.com>


Dave Martin <Dave.Martin@arm.com> writes:

> The existing FPSIMD context switch code contains a couple of
> instances of {set,clear}_ti_thread(task_thread_info(task)).  Since
> there are thread flag manipulators that operate directly on
> task_struct, this verbosity isn't strictly needed.
>
> For consistency, this patch simplifies the affected calls.  This
> should have no impact on behaviour.
>
> Signed-off-by: Dave Martin <Dave.Martin@arm.com>

Reviewed-by: Alex Benn?e <alex.bennee@linaro.org>

> ---
>  arch/arm64/kernel/fpsimd.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
> index 138fcfa..9c1f268e 100644
> --- a/arch/arm64/kernel/fpsimd.c
> +++ b/arch/arm64/kernel/fpsimd.c
> @@ -159,11 +159,9 @@ void fpsimd_thread_switch(struct task_struct *next)
>
>  		if (__this_cpu_read(fpsimd_last_state) == st
>  		    && st->cpu == smp_processor_id())
> -			clear_ti_thread_flag(task_thread_info(next),
> -					     TIF_FOREIGN_FPSTATE);
> +			clear_tsk_thread_flag(next, TIF_FOREIGN_FPSTATE);
>  		else
> -			set_ti_thread_flag(task_thread_info(next),
> -					   TIF_FOREIGN_FPSTATE);
> +			set_tsk_thread_flag(next, TIF_FOREIGN_FPSTATE);
>  	}
>  }


--
Alex Benn?e

  parent reply	other threads:[~2017-08-18 16:36 UTC|newest]

Thread overview: 204+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-09 12:05 [PATCH 00/27] ARM Scalable Vector Extension (SVE) Dave Martin
2017-08-09 12:05 ` Dave Martin
2017-08-09 12:05 ` [PATCH 01/27] regset: Add support for dynamically sized regsets Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-18 11:52   ` Alex Bennée
2017-08-18 11:52     ` Alex Bennée
2017-08-18 11:52     ` Alex Bennée
2017-08-09 12:05 ` [PATCH 02/27] arm64: KVM: Hide unsupported AArch64 CPU features from guests Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-16 11:10   ` Marc Zyngier
2017-08-16 11:10     ` Marc Zyngier
2017-08-16 20:32     ` Dave Martin
2017-08-16 20:32       ` Dave Martin
2017-08-17  8:45       ` Marc Zyngier
2017-08-17  8:45         ` Marc Zyngier
2017-08-17  9:57         ` Dave Martin
2017-08-17  9:57           ` Dave Martin
2017-08-17  9:57           ` Dave Martin
2017-08-09 12:05 ` [PATCH 03/27] arm64: efi: Add missing Kconfig dependency on KERNEL_MODE_NEON Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-18 12:02   ` Alex Bennée
2017-08-18 12:02     ` Alex Bennée
2017-08-18 12:02     ` Alex Bennée
2017-08-09 12:05 ` [PATCH 04/27] arm64: Port deprecated instruction emulation to new sysctl interface Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-18 12:09   ` Alex Bennée
2017-08-18 12:09     ` Alex Bennée
2017-08-18 12:09     ` Alex Bennée
2017-08-09 12:05 ` [PATCH 05/27] arm64: fpsimd: Simplify uses of {set,clear}_ti_thread_flag() Dave Martin
2017-08-09 12:05   ` [PATCH 05/27] arm64: fpsimd: Simplify uses of {set, clear}_ti_thread_flag() Dave Martin
2017-08-15 17:11   ` [PATCH 05/27] arm64: fpsimd: Simplify uses of {set,clear}_ti_thread_flag() Ard Biesheuvel
2017-08-15 17:11     ` [PATCH 05/27] arm64: fpsimd: Simplify uses of {set, clear}_ti_thread_flag() Ard Biesheuvel
2017-08-18 16:36   ` Alex Bennée [this message]
2017-08-18 16:36     ` Alex Bennée
2017-08-18 16:36     ` Alex Bennée
2017-08-09 12:05 ` [PATCH 06/27] arm64/sve: System register and exception syndrome definitions Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-21  9:33   ` Alex Bennée
2017-08-21  9:33     ` Alex Bennée
2017-08-21 12:34     ` Alex Bennée
2017-08-21 12:34       ` Alex Bennée
2017-08-21 12:34       ` Alex Bennée
2017-08-21 14:26       ` Dave Martin
2017-08-21 14:26         ` Dave Martin
2017-08-21 14:50         ` Alex Bennée
2017-08-21 14:50           ` Alex Bennée
2017-08-21 14:50           ` Alex Bennée
2017-08-21 15:19           ` Dave Martin
2017-08-21 15:19             ` Dave Martin
2017-08-21 15:34             ` Alex Bennée
2017-08-21 15:34               ` Alex Bennée
2017-08-21 15:34               ` Alex Bennée
2017-08-21 13:56     ` Dave Martin
2017-08-21 13:56       ` Dave Martin
2017-08-21 14:36       ` Alex Bennée
2017-08-21 14:36         ` Alex Bennée
2017-08-21 14:36         ` Alex Bennée
2017-08-09 12:05 ` [PATCH 07/27] arm64/sve: Low-level SVE architectural state manipulation functions Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-21 10:11   ` Alex Bennée
2017-08-21 10:11     ` Alex Bennée
2017-08-21 10:11     ` Alex Bennée
2017-08-21 14:38     ` Dave Martin
2017-08-21 14:38       ` Dave Martin
2017-08-09 12:05 ` [PATCH 08/27] arm64/sve: Kconfig update and conditional compilation support Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-21 10:12   ` Alex Bennée
2017-08-21 10:12     ` Alex Bennée
2017-08-21 10:12     ` Alex Bennée
2017-08-09 12:05 ` [PATCH 09/27] arm64/sve: Signal frame and context structure definition Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-22 10:22   ` Alex Bennée
2017-08-22 10:22     ` Alex Bennée
2017-08-22 11:17     ` Dave Martin
2017-08-22 11:17       ` Dave Martin
2017-08-22 13:53       ` Alex Bennée
2017-08-22 13:53         ` Alex Bennée
2017-08-22 13:53         ` Alex Bennée
2017-08-22 14:21         ` Dave Martin
2017-08-22 14:21           ` Dave Martin
2017-08-22 14:21           ` Dave Martin
2017-08-22 15:03           ` Alex Bennée
2017-08-22 15:03             ` Alex Bennée
2017-08-22 15:03             ` Alex Bennée
2017-08-22 15:41             ` Dave Martin
2017-08-22 15:41               ` Dave Martin
2017-08-09 12:05 ` [PATCH 10/27] arm64/sve: Low-level CPU setup Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-22 15:04   ` Alex Bennée
2017-08-22 15:04     ` Alex Bennée
2017-08-22 15:04     ` Alex Bennée
2017-08-22 15:33     ` Dave Martin
2017-08-22 15:33       ` Dave Martin
2017-08-09 12:05 ` [PATCH 11/27] arm64/sve: Core task context handling Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-15 17:31   ` Ard Biesheuvel
2017-08-15 17:31     ` Ard Biesheuvel
2017-08-16 10:40     ` Dave Martin
2017-08-16 10:40       ` Dave Martin
2017-08-17 16:42     ` Dave Martin
2017-08-17 16:42       ` Dave Martin
2017-08-17 16:46       ` Ard Biesheuvel
2017-08-17 16:46         ` Ard Biesheuvel
2017-08-22 16:21   ` Alex Bennée
2017-08-22 16:21     ` Alex Bennée
2017-08-22 16:21     ` Alex Bennée
2017-08-22 17:19     ` Dave Martin
2017-08-22 17:19       ` Dave Martin
2017-08-22 18:39       ` Alex Bennée
2017-08-22 18:39         ` Alex Bennée
2017-08-22 18:39         ` Alex Bennée
2017-08-09 12:05 ` [PATCH 12/27] arm64/sve: Support vector length resetting for new processes Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-22 16:22   ` Alex Bennée
2017-08-22 16:22     ` Alex Bennée
2017-08-22 17:22     ` Dave Martin
2017-08-22 17:22       ` Dave Martin
2017-08-09 12:05 ` [PATCH 13/27] arm64/sve: Signal handling support Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-23  9:38   ` Alex Bennée
2017-08-23  9:38     ` Alex Bennée
2017-08-23  9:38     ` Alex Bennée
2017-08-23 11:30     ` Dave Martin
2017-08-23 11:30       ` Dave Martin
2017-08-09 12:05 ` [PATCH 14/27] arm64/sve: Backend logic for setting the vector length Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-23 15:33   ` Alex Bennée
2017-08-23 15:33     ` Alex Bennée
2017-08-23 15:33     ` Alex Bennée
2017-08-23 17:29     ` Dave Martin
2017-08-23 17:29       ` Dave Martin
2017-08-09 12:05 ` [PATCH 15/27] arm64/sve: Probe SVE capabilities and usable vector lengths Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-16 17:48   ` Suzuki K Poulose
2017-08-16 17:48     ` Suzuki K Poulose
2017-08-17 10:04     ` Dave Martin
2017-08-17 10:04       ` Dave Martin
2017-08-17 10:04       ` Dave Martin
2017-08-17 10:46       ` Suzuki K Poulose
2017-08-17 10:46         ` Suzuki K Poulose
2017-08-17 10:46         ` Suzuki K Poulose
2017-08-09 12:05 ` [PATCH 16/27] arm64/sve: Preserve SVE registers around kernel-mode NEON use Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-15 17:37   ` Ard Biesheuvel
2017-08-15 17:37     ` Ard Biesheuvel
2017-08-15 17:37     ` Ard Biesheuvel
2017-08-09 12:05 ` [PATCH 17/27] arm64/sve: Preserve SVE registers around EFI runtime service calls Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-15 17:44   ` Ard Biesheuvel
2017-08-15 17:44     ` Ard Biesheuvel
2017-08-16  9:13     ` Dave Martin
2017-08-16  9:13       ` Dave Martin
2017-08-09 12:05 ` [PATCH 18/27] arm64/sve: ptrace and ELF coredump support Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05 ` [PATCH 19/27] arm64/sve: Add prctl controls for userspace vector length management Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05 ` [PATCH 20/27] arm64/sve: Add sysctl to set the default vector length for new processes Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05 ` [PATCH 21/27] arm64/sve: KVM: Prevent guests from using SVE Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-15 16:33   ` Marc Zyngier
2017-08-15 16:33     ` Marc Zyngier
2017-08-15 16:33     ` Marc Zyngier
2017-08-16 10:50     ` Dave Martin
2017-08-16 10:50       ` Dave Martin
2017-08-16 11:20       ` Marc Zyngier
2017-08-16 11:20         ` Marc Zyngier
2017-08-16 11:22         ` Marc Zyngier
2017-08-16 11:22           ` Marc Zyngier
2017-08-16 11:35         ` Dave Martin
2017-08-16 11:35           ` Dave Martin
2017-08-09 12:05 ` [PATCH 22/27] arm64/sve: KVM: Treat guest SVE use as undefined instruction execution Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05 ` [PATCH 23/27] arm64/sve: KVM: Hide SVE from CPU features exposed to guests Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-15 16:37   ` Marc Zyngier
2017-08-15 16:37     ` Marc Zyngier
2017-08-16 10:54     ` Dave Martin
2017-08-16 10:54       ` Dave Martin
2017-08-16 11:10       ` Marc Zyngier
2017-08-16 11:10         ` Marc Zyngier
2017-08-16 11:22         ` Dave Martin
2017-08-16 11:22           ` Dave Martin
2017-08-09 12:05 ` [PATCH 24/27] arm64/sve: Detect SVE and activate runtime support Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-16 17:53   ` Suzuki K Poulose
2017-08-16 17:53     ` Suzuki K Poulose
2017-08-17 10:00     ` Dave Martin
2017-08-17 10:00       ` Dave Martin
2017-08-17 10:00       ` Dave Martin
2017-08-09 12:05 ` [PATCH 25/27] arm64/sve: Add documentation Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05 ` [RFC PATCH 26/27] arm64: signal: Report signal frame size to userspace via auxv Dave Martin
2017-08-09 12:05   ` Dave Martin
2017-08-09 12:05 ` [RFC PATCH 27/27] arm64/sve: signal: Include SVE when computing AT_MINSIGSTKSZ Dave Martin
2017-08-09 12:05   ` Dave Martin

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