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Date: Wed, 8 Jun 2022 16:40:17 +0200 From: Frederic Weisbecker <frederic@...nel.org> To: LKML <linux-kernel@...r.kernel.org> Cc: Frederic Weisbecker <frederic@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Phil Auld <pauld@...hat.com>, Alex Belits <abelits@...vell.com>, Nicolas Saenz Julienne <nsaenz@...nel.org>, Xiongfeng Wang <wangxiongfeng2@...wei.com>, Neeraj Upadhyay <quic_neeraju@...cinc.com>, Thomas Gleixner <tglx@...utronix.de>, Yu Liao <liaoyu15@...wei.com>, Boqun Feng <boqun.feng@...il.com>, "Paul E . McKenney" <paulmck@...nel.org>, Marcelo Tosatti <mtosatti@...hat.com>, Paul Gortmaker <paul.gortmaker@...driver.com>, Uladzislau Rezki <uladzislau.rezki@...y.com>, Joel Fernandes <joel@...lfernandes.org> Subject: [PATCH 00/20] rcu/context-tracking: Merge RCU eqs-dynticks counter to context tracking v4 Hi, No big issue reported or reviewed in the last take. Changes in this version: * Dropped noinstr related "fixes" as it's worth a whole patchset of its own. Just comment on why some context tracking functions are not going to be fixed (because they are obsolete). * Fixed several build splats reported by the kernel test robot git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git rcu/context-tracking-v4 HEAD: 82e4a1998ec3a58b865249c6015d3ee9b94e3004 Thanks, Frederic --- Frederic Weisbecker (20): context_tracking: Remove unused context_tracking_in_user() context_tracking: Add a note about noinstr VS unsafe context tracking functions context_tracking: Rename __context_tracking_enter/exit() to __ct_user_enter/exit() context_tracking: Rename context_tracking_user_enter/exit() to user_enter/exit_callable() context_tracking: Rename context_tracking_enter/exit() to ct_user_enter/exit() context_tracking: Rename context_tracking_cpu_set() to ct_cpu_track_user() context_tracking: Split user tracking Kconfig context_tracking: Take idle eqs entrypoints over RCU context_tracking: Take IRQ eqs entrypoints over RCU context_tracking: Take NMI eqs entrypoints over RCU rcu/context-tracking: Remove rcu_irq_enter/exit() rcu/context_tracking: Move dynticks counter to context tracking rcu/context_tracking: Move dynticks_nesting to context tracking rcu/context_tracking: Move dynticks_nmi_nesting to context tracking rcu/context-tracking: Move deferred nocb resched to context tracking rcu/context-tracking: Move RCU-dynticks internal functions to context_tracking rcu/context-tracking: Remove unused and/or unecessary middle functions context_tracking: Convert state to atomic_t rcu/context_tracking: Merge dynticks counter and context tracking states MAINTAINERS: Add Paul as context tracking maintainer .../RCU/Design/Requirements/Requirements.rst | 10 +- Documentation/RCU/stallwarn.rst | 6 +- .../time/context-tracking/arch-support.txt | 6 +- MAINTAINERS | 1 + arch/Kconfig | 8 +- arch/arm/Kconfig | 2 +- arch/arm/kernel/entry-common.S | 4 +- arch/arm/kernel/entry-header.S | 12 +- arch/arm/mach-imx/cpuidle-imx6q.c | 5 +- arch/arm64/Kconfig | 2 +- arch/arm64/kernel/entry-common.c | 14 +- arch/csky/Kconfig | 2 +- arch/csky/kernel/entry.S | 8 +- arch/mips/Kconfig | 2 +- arch/powerpc/Kconfig | 2 +- arch/powerpc/include/asm/context_tracking.h | 2 +- arch/riscv/Kconfig | 2 +- arch/riscv/kernel/entry.S | 12 +- arch/sparc/Kconfig | 2 +- arch/sparc/kernel/rtrap_64.S | 2 +- arch/x86/Kconfig | 4 +- arch/x86/mm/fault.c | 2 +- drivers/acpi/processor_idle.c | 5 +- drivers/cpuidle/cpuidle-psci.c | 8 +- drivers/cpuidle/cpuidle-riscv-sbi.c | 8 +- drivers/cpuidle/cpuidle.c | 9 +- include/linux/context_tracking.h | 95 ++-- include/linux/context_tracking_irq.h | 21 + include/linux/context_tracking_state.h | 109 +++- include/linux/entry-common.h | 10 +- include/linux/hardirq.h | 12 +- include/linux/rcupdate.h | 17 +- include/linux/rcutiny.h | 6 - include/linux/rcutree.h | 9 +- include/linux/tracepoint.h | 4 +- init/Kconfig | 4 +- kernel/context_tracking.c | 618 +++++++++++++++++++-- kernel/cpu_pm.c | 8 +- kernel/entry/common.c | 16 +- kernel/extable.c | 4 +- kernel/locking/lockdep.c | 2 +- kernel/rcu/Kconfig | 2 + kernel/rcu/rcu.h | 4 - kernel/rcu/tree.c | 476 +--------------- kernel/rcu/tree.h | 8 - kernel/rcu/tree_exp.h | 2 +- kernel/rcu/tree_plugin.h | 38 +- kernel/rcu/tree_stall.h | 8 +- kernel/rcu/update.c | 2 +- kernel/sched/core.c | 2 +- kernel/sched/idle.c | 10 +- kernel/sched/sched.h | 1 + kernel/softirq.c | 4 +- kernel/time/Kconfig | 37 +- kernel/time/tick-sched.c | 2 +- kernel/trace/trace.c | 8 +- 56 files changed, 923 insertions(+), 756 deletions(-)
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