Re: [PATCH v8 09/19] sched: Introduce task_struct::user_cpus_ptr to track... | linux-arch

[PATCH v8 00/19] Add support for 32-bit tasks on asymmetric AArch32 systems · Will Deacon <will@kernel.org> · 2021-06-02
[PATCH v8 01/19] arm64: cpuinfo: Split AArch32 registers out into a separate struct · Will Deacon <will@kernel.org> · 2021-06-02
Re: [PATCH v8 01/19] arm64: cpuinfo: Split AArch32 registers out into a separate struct · Mark Rutland <mark.rutland@arm.com> · 2021-06-03
Re: [PATCH v8 01/19] arm64: cpuinfo: Split AArch32 registers out into a separate struct · Will Deacon <will@kernel.org> · 2021-06-03
[PATCH v8 02/19] arm64: Allow mismatched 32-bit EL0 support · Will Deacon <will@kernel.org> · 2021-06-02
Re: [PATCH v8 02/19] arm64: Allow mismatched 32-bit EL0 support · Mark Rutland <mark.rutland@arm.com> · 2021-06-03
Re: [PATCH v8 02/19] arm64: Allow mismatched 32-bit EL0 support · Will Deacon <will@kernel.org> · 2021-06-03
Re: [PATCH v8 02/19] arm64: Allow mismatched 32-bit EL0 support · Mark Rutland <mark.rutland@arm.com> · 2021-06-04
Re: [PATCH v8 02/19] arm64: Allow mismatched 32-bit EL0 support · Will Deacon <will@kernel.org> · 2021-06-04
Re: [PATCH v8 02/19] arm64: Allow mismatched 32-bit EL0 support · Mark Rutland <mark.rutland@arm.com> · 2021-06-04
Re: [PATCH v8 02/19] arm64: Allow mismatched 32-bit EL0 support · Will Deacon <will@kernel.org> · 2021-06-04
[PATCH v8 03/19] KVM: arm64: Kill 32-bit vCPUs on systems with mismatched EL0 support · Will Deacon <will@kernel.org> · 2021-06-02
[PATCH v8 04/19] arm64: Kill 32-bit applications scheduled on 64-bit-only CPUs · Will Deacon <will@kernel.org> · 2021-06-02
[PATCH v8 05/19] sched: Introduce task_cpu_possible_mask() to limit fallback rq selection · Will Deacon <will@kernel.org> · 2021-06-02
Re: [PATCH v8 05/19] sched: Introduce task_cpu_possible_mask() to limit fallback rq selection · Valentin Schneider <hidden> · 2021-06-04
Re: [PATCH v8 05/19] sched: Introduce task_cpu_possible_mask() to limit fallback rq selection · Will Deacon <will@kernel.org> · 2021-06-07
[PATCH v8 06/19] cpuset: Don't use the cpu_possible_mask as a last resort for cgroup v1 · Will Deacon <will@kernel.org> · 2021-06-02
Re: [PATCH v8 06/19] cpuset: Don't use the cpu_possible_mask as a last resort for cgroup v1 · Valentin Schneider <hidden> · 2021-06-04
Re: [PATCH v8 06/19] cpuset: Don't use the cpu_possible_mask as a last resort for cgroup v1 · Will Deacon <will@kernel.org> · 2021-06-07
Re: [PATCH v8 06/19] cpuset: Don't use the cpu_possible_mask as a last resort for cgroup v1 · Valentin Schneider <hidden> · 2021-06-10
[PATCH v8 07/19] cpuset: Honour task_cpu_possible_mask() in guarantee_online_cpus() · Will Deacon <will@kernel.org> · 2021-06-02
Re: [PATCH v8 07/19] cpuset: Honour task_cpu_possible_mask() in guarantee_online_cpus() · Valentin Schneider <hidden> · 2021-06-04
[PATCH v8 08/19] sched: Reject CPU affinity changes based on task_cpu_possible_mask() · Will Deacon <will@kernel.org> · 2021-06-02
Re: [PATCH v8 08/19] sched: Reject CPU affinity changes based on task_cpu_possible_mask() · Valentin Schneider <hidden> · 2021-06-04
Re: [PATCH v8 08/19] sched: Reject CPU affinity changes based on task_cpu_possible_mask() · Will Deacon <will@kernel.org> · 2021-06-07
[PATCH v8 09/19] sched: Introduce task_struct::user_cpus_ptr to track requested affinity · Will Deacon <will@kernel.org> · 2021-06-02
Re: [PATCH v8 09/19] sched: Introduce task_struct::user_cpus_ptr to track requested affinity · Valentin Schneider <hidden> · 2021-06-04
[PATCH v8 10/19] sched: Split the guts of sched_setaffinity() into a helper function · Will Deacon <will@kernel.org> · 2021-06-02
Re: [PATCH v8 10/19] sched: Split the guts of sched_setaffinity() into a helper function · Valentin Schneider <hidden> · 2021-06-04
[PATCH v8 11/19] sched: Allow task CPU affinity to be restricted on asymmetric systems · Will Deacon <will@kernel.org> · 2021-06-02
Re: [PATCH v8 11/19] sched: Allow task CPU affinity to be restricted on asymmetric systems · Valentin Schneider <hidden> · 2021-06-04
Re: [PATCH v8 11/19] sched: Allow task CPU affinity to be restricted on asymmetric systems · Will Deacon <will@kernel.org> · 2021-06-07
Re: [PATCH v8 11/19] sched: Allow task CPU affinity to be restricted on asymmetric systems · Valentin Schneider <hidden> · 2021-06-10
[PATCH v8 12/19] sched: Introduce task_cpus_dl_admissible() to check proposed affinity · Will Deacon <will@kernel.org> · 2021-06-02
Re: [PATCH v8 12/19] sched: Introduce task_cpus_dl_admissible() to check proposed affinity · Daniel Bristot de Oliveira <hidden> · 2021-06-03
Re: [PATCH v8 12/19] sched: Introduce task_cpus_dl_admissible() to check proposed affinity · Will Deacon <will@kernel.org> · 2021-06-03
[PATCH v8 13/19] arm64: Implement task_cpu_possible_mask() · Will Deacon <will@kernel.org> · 2021-06-02
[PATCH v8 14/19] arm64: exec: Adjust affinity for compat tasks with mismatched 32-bit EL0 · Will Deacon <will@kernel.org> · 2021-06-02
Re: [PATCH v8 14/19] arm64: exec: Adjust affinity for compat tasks with mismatched 32-bit EL0 · Daniel Bristot de Oliveira <hidden> · 2021-06-03
[PATCH v8 15/19] arm64: Prevent offlining first CPU with 32-bit EL0 on mismatched system · Will Deacon <will@kernel.org> · 2021-06-02
Re: [PATCH v8 15/19] arm64: Prevent offlining first CPU with 32-bit EL0 on mismatched system · Mark Rutland <mark.rutland@arm.com> · 2021-06-03
Re: [PATCH v8 15/19] arm64: Prevent offlining first CPU with 32-bit EL0 on mismatched system · Will Deacon <will@kernel.org> · 2021-06-03
Re: [PATCH v8 15/19] arm64: Prevent offlining first CPU with 32-bit EL0 on mismatched system · Mark Rutland <mark.rutland@arm.com> · 2021-06-04
Re: [PATCH v8 15/19] arm64: Prevent offlining first CPU with 32-bit EL0 on mismatched system · Qais Yousef <hidden> · 2021-06-04
[PATCH v8 16/19] arm64: Advertise CPUs capable of running 32-bit applications in sysfs · Will Deacon <will@kernel.org> · 2021-06-02
[PATCH v8 17/19] arm64: Hook up cmdline parameter to allow mismatched 32-bit EL0 · Will Deacon <will@kernel.org> · 2021-06-02
[PATCH v8 18/19] arm64: Remove logic to kill 32-bit tasks on 64-bit-only cores · Will Deacon <will@kernel.org> · 2021-06-02
[PATCH v8 19/19] Documentation: arm64: describe asymmetric 32-bit support · Will Deacon <will@kernel.org> · 2021-06-02

Re: [PATCH v8 09/19] sched: Introduce task_struct::user_cpus_ptr to track requested affinity

From: Valentin Schneider <hidden>
Date: 2021-06-04 17:12:11
Also in: linux-arm-kernel, lkml

On 02/06/21 17:47, Will Deacon wrote:

In preparation for saving and restoring the user-requested CPU affinity
mask of a task, add a new cpumask_t pointer to 'struct task_struct'.

If the pointer is non-NULL, then the mask is copied across fork() and
freed on task exit.

Signed-off-by: Will Deacon <will@kernel.org>

Reviewed-by: Valentin Schneider <redacted>

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