From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> To: Boqun Feng <boqun.feng@gmail.com>, Peter Zijlstra <peterz@infradead.org>, "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, Andy Lutomirski <luto@kernel.org>, Andrew Hunter <ahh@google.com>, Maged Michael <maged.michael@gmail.com>, Avi Kivity <avi@scylladb.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au>, Dave Watson <davejwatson@fb.com>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, "H . Peter Anvin" <hpa@zytor.com>, Andrea Parri <parri.andrea@gmail.com>, Russell King <linux@armlinux.org.uk>, Greg Hackmann <ghackmann@google.com>, Will Deacon <will.deacon@arm.com>, David Sehr <sehr@google.com>, Linus Torvalds <torvalds@linux-foundation.org>, x86@kernel.org, Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Subject: [RFC PATCH for 4.15 0/9] membarrier updates for 4.15 Date: Fri, 10 Nov 2017 16:37:07 -0500 [thread overview] Message-ID: <20171110213717.12457-1-mathieu.desnoyers@efficios.com> (raw) Those are the membarrier changes I plan to submit for 4.15. This series includes selftests improvements for sys_membarrier, improvement of powerpc handling of the memory barrier required by sys_membarrier in switch_mm(), and adds a new core serializing membarrier, currently only implemented on x86. Architectures wishing to provide the core serializing membarrier need to select ARCH_HAS_MEMBARRIER_SYNC_CORE and document how they provide the core serialization required by that command in their architecture code. I included the x86 core serializing migration fix into that series, given that this fix and membarrier sync_core both depend on the new sync_core_before_usermode() architecture function. Feedback is welcome, Thanks, Mathieu Mathieu Desnoyers (10): membarrier: selftest: Test private expedited cmd membarrier: powerpc: Skip memory barrier in switch_mm() (v7) membarrier: Document scheduler barrier requirements (v5) membarrier: Provide core serializing command x86: Introduce sync_core_before_usermode Fix: x86: Add missing core serializing instruction on migration membarrier: x86: Provide core serializing command (v2) membarrier: selftest: Test private expedited sync core cmd membarrier: provide SHARED_EXPEDITED command membarrier: selftest: Test shared expedited cmd MAINTAINERS | 1 + arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/membarrier.h | 26 +++ arch/powerpc/mm/mmu_context.c | 7 + arch/x86/Kconfig | 2 + arch/x86/entry/entry_32.S | 5 + arch/x86/entry/entry_64.S | 8 + arch/x86/include/asm/processor.h | 10 + arch/x86/mm/tlb.c | 6 + include/linux/processor.h | 6 + include/linux/sched/mm.h | 38 +++- include/uapi/linux/membarrier.h | 66 +++++- init/Kconfig | 6 + kernel/sched/core.c | 60 ++++-- kernel/sched/membarrier.c | 169 +++++++++++++-- kernel/sched/sched.h | 1 + .../testing/selftests/membarrier/membarrier_test.c | 233 +++++++++++++++++++-- 17 files changed, 584 insertions(+), 61 deletions(-) create mode 100644 arch/powerpc/include/asm/membarrier.h -- 2.11.0
WARNING: multiple messages have this Message-ID (diff)
From: Mathieu Desnoyers <mathieu.desnoyers-vg+e7yoeK/dWk0Htik3J/w@public.gmane.org> To: Boqun Feng <boqun.feng-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>, "Paul E . McKenney" <paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Andy Lutomirski <luto-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Andrew Hunter <ahh-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, Maged Michael <maged.michael-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Avi Kivity <avi-VrcmuVmyx1hWk0Htik3J/w@public.gmane.org>, Benjamin Herrenschmidt <benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>, Paul Mackerras <paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>, Michael Ellerman <mpe-Gsx/Oe8HsFggBc27wqDAHg@public.gmane.org>, Dave Watson <davejwatson-b10kYP2dOMg@public.gmane.org>, Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>, Ingo Molnar <mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, "H . Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>, Andrea Parri <parri.andrea-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Russell King <linux-I+IVW8TIWO2tmTQ+vhA3Yw@public.gmane.org>, Greg Hackmann <ghackmann-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>, David Sehr <sehr-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, Linus Torvalds <torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, Mathieu Desnoyers <mathieu.desnoyers-vg+e7yoeK/fQFizaE/u3fw@public.gmane.org> Subject: [RFC PATCH for 4.15 0/9] membarrier updates for 4.15 Date: Fri, 10 Nov 2017 16:37:07 -0500 [thread overview] Message-ID: <20171110213717.12457-1-mathieu.desnoyers@efficios.com> (raw) Those are the membarrier changes I plan to submit for 4.15. This series includes selftests improvements for sys_membarrier, improvement of powerpc handling of the memory barrier required by sys_membarrier in switch_mm(), and adds a new core serializing membarrier, currently only implemented on x86. Architectures wishing to provide the core serializing membarrier need to select ARCH_HAS_MEMBARRIER_SYNC_CORE and document how they provide the core serialization required by that command in their architecture code. I included the x86 core serializing migration fix into that series, given that this fix and membarrier sync_core both depend on the new sync_core_before_usermode() architecture function. Feedback is welcome, Thanks, Mathieu Mathieu Desnoyers (10): membarrier: selftest: Test private expedited cmd membarrier: powerpc: Skip memory barrier in switch_mm() (v7) membarrier: Document scheduler barrier requirements (v5) membarrier: Provide core serializing command x86: Introduce sync_core_before_usermode Fix: x86: Add missing core serializing instruction on migration membarrier: x86: Provide core serializing command (v2) membarrier: selftest: Test private expedited sync core cmd membarrier: provide SHARED_EXPEDITED command membarrier: selftest: Test shared expedited cmd MAINTAINERS | 1 + arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/membarrier.h | 26 +++ arch/powerpc/mm/mmu_context.c | 7 + arch/x86/Kconfig | 2 + arch/x86/entry/entry_32.S | 5 + arch/x86/entry/entry_64.S | 8 + arch/x86/include/asm/processor.h | 10 + arch/x86/mm/tlb.c | 6 + include/linux/processor.h | 6 + include/linux/sched/mm.h | 38 +++- include/uapi/linux/membarrier.h | 66 +++++- init/Kconfig | 6 + kernel/sched/core.c | 60 ++++-- kernel/sched/membarrier.c | 169 +++++++++++++-- kernel/sched/sched.h | 1 + .../testing/selftests/membarrier/membarrier_test.c | 233 +++++++++++++++++++-- 17 files changed, 584 insertions(+), 61 deletions(-) create mode 100644 arch/powerpc/include/asm/membarrier.h -- 2.11.0
next reply other threads:[~2017-11-10 21:37 UTC|newest] Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-11-10 21:37 Mathieu Desnoyers [this message] 2017-11-10 21:37 ` [RFC PATCH for 4.15 0/9] membarrier updates for 4.15 Mathieu Desnoyers 2017-11-10 21:37 ` [RFC PATCH for 4.15 01/10] membarrier: selftest: Test private expedited cmd Mathieu Desnoyers 2017-11-10 21:37 ` Mathieu Desnoyers 2017-11-10 21:37 ` [Linux-kselftest-mirror] " Mathieu Desnoyers 2017-11-10 21:37 ` mathieu.desnoyers 2017-11-10 21:37 ` [RFC PATCH v7 for 4.15 02/10] membarrier: powerpc: Skip memory barrier in switch_mm() Mathieu Desnoyers 2017-11-10 21:37 ` Mathieu Desnoyers 2017-11-10 21:37 ` [RFC PATCH v5 for 4.15 03/10] membarrier: Document scheduler barrier requirements Mathieu Desnoyers 2017-11-10 21:37 ` Mathieu Desnoyers 2017-11-10 21:37 ` [RFC PATCH for 4.15 04/10] membarrier: Provide core serializing command Mathieu Desnoyers 2017-11-10 21:37 ` Mathieu Desnoyers 2017-11-10 21:37 ` [RFC PATCH for 4.15 05/10] x86: Introduce sync_core_before_usermode Mathieu Desnoyers 2017-11-10 21:37 ` Mathieu Desnoyers 2017-11-10 22:02 ` Andy Lutomirski 2017-11-10 22:02 ` Andy Lutomirski 2017-11-10 22:20 ` Mathieu Desnoyers 2017-11-10 22:20 ` Mathieu Desnoyers 2017-11-10 22:32 ` Mathieu Desnoyers 2017-11-10 22:32 ` Mathieu Desnoyers 2017-11-10 23:13 ` Mathieu Desnoyers 2017-11-10 23:13 ` Mathieu Desnoyers 2017-11-10 22:36 ` Andy Lutomirski 2017-11-10 22:36 ` Andy Lutomirski 2017-11-10 22:39 ` Mathieu Desnoyers 2017-11-10 22:39 ` Mathieu Desnoyers 2017-11-10 21:37 ` [RFC PATCH for 4.15 06/10] Fix: x86: Add missing core serializing instruction on migration Mathieu Desnoyers 2017-11-10 21:37 ` Mathieu Desnoyers 2017-11-10 21:37 ` [RFC PATCH v2 for 4.15 07/10] membarrier: x86: Provide core serializing command Mathieu Desnoyers 2017-11-10 21:37 ` Mathieu Desnoyers 2017-11-10 21:37 ` [RFC PATCH for 4.15 08/10] membarrier: selftest: Test private expedited sync core cmd Mathieu Desnoyers 2017-11-10 21:37 ` Mathieu Desnoyers 2017-11-10 21:37 ` [Linux-kselftest-mirror] " Mathieu Desnoyers 2017-11-10 21:37 ` mathieu.desnoyers 2017-11-10 21:37 ` [RFC PATCH for 4.15 09/10] membarrier: provide SHARED_EXPEDITED command Mathieu Desnoyers 2017-11-10 21:37 ` Mathieu Desnoyers 2017-11-10 21:37 ` [RFC PATCH for 4.15 10/10] membarrier: selftest: Test shared expedited cmd Mathieu Desnoyers 2017-11-10 21:37 ` Mathieu Desnoyers 2017-11-10 21:37 ` [Linux-kselftest-mirror] " Mathieu Desnoyers 2017-11-10 21:37 ` mathieu.desnoyers
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