From: Valentin Schneider <valentin.schneider@arm.com> To: linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linuxppc-dev@lists.ozlabs.org, linux-kbuild@vger.kernel.org Cc: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@kernel.org>, Frederic Weisbecker <frederic@kernel.org>, Mike Galbraith <efault@gmx.de>, Marco Elver <elver@google.com>, Dmitry Vyukov <dvyukov@google.com>, Michael Ellerman <mpe@ellerman.id.au>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Steven Rostedt <rostedt@goodmis.org>, Masahiro Yamada <masahiroy@kernel.org>, Michal Marek <michal.lkml@markovi.net>, Nick Desaulniers <ndesaulniers@google.com> Subject: [PATCH v2 0/5] preempt: PREEMPT vs PREEMPT_DYNAMIC configs fixup Date: Wed, 10 Nov 2021 20:24:43 +0000 [thread overview] Message-ID: <20211110202448.4054153-1-valentin.schneider@arm.com> (raw) Hi folks, Thanks to suggestions from Mike, Frederic and Marco I ended up with something that looks somewhat sane and with a minimal amount of crud. Patches ======= o Patch 1 is the meat of the topic and could be picked on its own if the rest is too icky. o Patch 2 introduces helpers for the dynamic preempt state o Patches 3-5 make use of said accessors where relevant. Testing ======= Briefly tested the dynamic part on an x86 kernel + QEMU. x86_64_defconfig gets me: Dynamic Preempt: voluntary and appending preempt=full gets me: Dynamic Preempt: full Revisions ========= v1: http://lore.kernel.org/r/20211105104035.3112162-1-valentin.schneider@arm.com v1.5: http://lore.kernel.org/r/20211109151057.3489223-1-valentin.schneider@arm.com This v2 is completely different from v1, so I felt like I could get away without writing a version changelog... Cheers, Valentin Valentin Schneider (5): preempt: Restore preemption model selection configs preempt/dynamic: Introduce preempt mode accessors powerpc: Use preemption model accessors kscan: Use preemption model accessors ftrace: Use preemption model accessors for trace header printout arch/powerpc/kernel/interrupt.c | 2 +- arch/powerpc/kernel/traps.c | 2 +- include/linux/kernel.h | 2 +- include/linux/sched.h | 16 +++++++++++++ include/linux/vermagic.h | 2 +- init/Makefile | 2 +- kernel/Kconfig.preempt | 42 ++++++++++++++++----------------- kernel/kcsan/kcsan_test.c | 4 ++-- kernel/sched/core.c | 17 ++++++++++--- kernel/trace/trace.c | 14 ++++------- 10 files changed, 62 insertions(+), 41 deletions(-) -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Valentin Schneider <valentin.schneider@arm.com> To: linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linuxppc-dev@lists.ozlabs.org, linux-kbuild@vger.kernel.org Cc: Marco Elver <elver@google.com>, Michal Marek <michal.lkml@markovi.net>, Peter Zijlstra <peterz@infradead.org>, Frederic Weisbecker <frederic@kernel.org>, Mike Galbraith <efault@gmx.de>, Nick Desaulniers <ndesaulniers@google.com>, Steven Rostedt <rostedt@goodmis.org>, Paul Mackerras <paulus@samba.org>, Masahiro Yamada <masahiroy@kernel.org>, Ingo Molnar <mingo@kernel.org>, Dmitry Vyukov <dvyukov@google.com> Subject: [PATCH v2 0/5] preempt: PREEMPT vs PREEMPT_DYNAMIC configs fixup Date: Wed, 10 Nov 2021 20:24:43 +0000 [thread overview] Message-ID: <20211110202448.4054153-1-valentin.schneider@arm.com> (raw) Hi folks, Thanks to suggestions from Mike, Frederic and Marco I ended up with something that looks somewhat sane and with a minimal amount of crud. Patches ======= o Patch 1 is the meat of the topic and could be picked on its own if the rest is too icky. o Patch 2 introduces helpers for the dynamic preempt state o Patches 3-5 make use of said accessors where relevant. Testing ======= Briefly tested the dynamic part on an x86 kernel + QEMU. x86_64_defconfig gets me: Dynamic Preempt: voluntary and appending preempt=full gets me: Dynamic Preempt: full Revisions ========= v1: http://lore.kernel.org/r/20211105104035.3112162-1-valentin.schneider@arm.com v1.5: http://lore.kernel.org/r/20211109151057.3489223-1-valentin.schneider@arm.com This v2 is completely different from v1, so I felt like I could get away without writing a version changelog... Cheers, Valentin Valentin Schneider (5): preempt: Restore preemption model selection configs preempt/dynamic: Introduce preempt mode accessors powerpc: Use preemption model accessors kscan: Use preemption model accessors ftrace: Use preemption model accessors for trace header printout arch/powerpc/kernel/interrupt.c | 2 +- arch/powerpc/kernel/traps.c | 2 +- include/linux/kernel.h | 2 +- include/linux/sched.h | 16 +++++++++++++ include/linux/vermagic.h | 2 +- init/Makefile | 2 +- kernel/Kconfig.preempt | 42 ++++++++++++++++----------------- kernel/kcsan/kcsan_test.c | 4 ++-- kernel/sched/core.c | 17 ++++++++++--- kernel/trace/trace.c | 14 ++++------- 10 files changed, 62 insertions(+), 41 deletions(-) -- 2.25.1
next reply other threads:[~2021-11-10 20:25 UTC|newest] Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-11-10 20:24 Valentin Schneider [this message] 2021-11-10 20:24 ` [PATCH v2 0/5] preempt: PREEMPT vs PREEMPT_DYNAMIC configs fixup Valentin Schneider 2021-11-10 20:24 ` [PATCH v2 1/5] preempt: Restore preemption model selection configs Valentin Schneider 2021-11-10 20:24 ` Valentin Schneider 2021-11-11 8:58 ` Marco Elver 2021-11-11 8:58 ` Marco Elver 2021-11-11 12:22 ` [tip: sched/urgent] " tip-bot2 for Valentin Schneider 2021-11-10 20:24 ` [PATCH v2 2/5] preempt/dynamic: Introduce preempt mode accessors Valentin Schneider 2021-11-10 20:24 ` Valentin Schneider 2021-11-11 3:16 ` Mike Galbraith 2021-11-11 3:16 ` Mike Galbraith 2021-11-11 3:35 ` Mike Galbraith 2021-11-11 3:35 ` Mike Galbraith 2021-11-11 3:47 ` Mike Galbraith 2021-11-11 3:47 ` Mike Galbraith 2021-11-11 3:55 ` Mike Galbraith 2021-11-11 3:55 ` Mike Galbraith 2021-11-11 9:36 ` Marco Elver 2021-11-11 9:36 ` Marco Elver 2021-11-11 10:32 ` Mike Galbraith 2021-11-11 10:32 ` Mike Galbraith 2021-11-11 10:56 ` Valentin Schneider 2021-11-11 10:56 ` Valentin Schneider 2021-11-11 11:09 ` Mike Galbraith 2021-11-11 11:09 ` Mike Galbraith 2021-11-11 8:54 ` Marco Elver 2021-11-11 8:54 ` Marco Elver 2021-11-11 10:56 ` Valentin Schneider 2021-11-11 10:56 ` Valentin Schneider 2021-11-16 13:29 ` Christophe Leroy 2021-11-16 13:29 ` Christophe Leroy 2021-11-22 16:37 ` Valentin Schneider 2021-11-22 16:37 ` Valentin Schneider 2021-11-10 20:24 ` [PATCH v2 3/5] powerpc: Use preemption model accessors Valentin Schneider 2021-11-10 20:24 ` Valentin Schneider 2021-11-11 4:55 ` Michael Ellerman 2021-11-11 4:55 ` Michael Ellerman 2021-11-15 15:29 ` Valentin Schneider 2021-11-15 15:29 ` Valentin Schneider 2021-11-16 13:41 ` Christophe Leroy 2021-11-16 13:41 ` Christophe Leroy 2021-11-22 16:44 ` Valentin Schneider 2021-11-22 16:44 ` Valentin Schneider 2021-11-10 20:24 ` [PATCH v2 4/5] kscan: " Valentin Schneider 2021-11-10 20:24 ` Valentin Schneider 2021-11-11 9:11 ` Marco Elver 2021-11-11 9:11 ` Marco Elver 2021-11-11 9:39 ` Marco Elver 2021-11-11 9:39 ` Marco Elver 2021-11-11 10:57 ` Valentin Schneider 2021-11-11 10:57 ` Valentin Schneider 2021-11-10 20:24 ` [PATCH v2 5/5] ftrace: Use preemption model accessors for trace header printout Valentin Schneider 2021-11-10 20:24 ` Valentin Schneider 2021-11-10 20:36 ` Steven Rostedt 2021-11-10 20:36 ` Steven Rostedt
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