From: Boqun Feng <boqun@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: "Catalin Marinas" <catalin.marinas@arm.com>,
"Will Deacon" <will@kernel.org>,
"Jonas Bonn" <jonas@southpole.se>,
"Stefan Kristiansson" <stefan.kristiansson@saunalahti.fi>,
"Stafford Horne" <shorne@gmail.com>,
"Heiko Carstens" <hca@linux.ibm.com>,
"Vasily Gorbik" <gor@linux.ibm.com>,
"Alexander Gordeev" <agordeev@linux.ibm.com>,
"Christian Borntraeger" <borntraeger@linux.ibm.com>,
"Sven Schnelle" <svens@linux.ibm.com>,
"Thomas Gleixner" <tglx@kernel.org>,
"Ingo Molnar" <mingo@redhat.com>,
"Borislav Petkov" <bp@alien8.de>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Juri Lelli" <juri.lelli@redhat.com>,
"Vincent Guittot" <vincent.guittot@linaro.org>,
"Dietmar Eggemann" <dietmar.eggemann@arm.com>,
"Steven Rostedt" <rostedt@goodmis.org>,
"Ben Segall" <bsegall@google.com>, "Mel Gorman" <mgorman@suse.de>,
"Valentin Schneider" <vschneid@redhat.com>,
"K Prateek Nayak" <kprateek.nayak@amd.com>,
"Boqun Feng" <boqun@kernel.org>,
"Waiman Long" <longman@redhat.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Andrii Nakryiko" <andrii@kernel.org>,
"Eduard Zingerman" <eddyz87@gmail.com>,
"Alexei Starovoitov" <ast@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Martin KaFai Lau" <martin.lau@linux.dev>,
"Kumar Kartikeya Dwivedi" <memxor@gmail.com>,
"Song Liu" <song@kernel.org>,
"Yonghong Song" <yonghong.song@linux.dev>,
"Jiri Olsa" <jolsa@kernel.org>, "Shuah Khan" <shuah@kernel.org>,
"Miguel Ojeda" <ojeda@kernel.org>, "Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <lossin@kernel.org>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
"Trevor Gross" <tmgross@umich.edu>,
"Danilo Krummrich" <dakr@kernel.org>,
"Jinjie Ruan" <ruanjinjie@huawei.com>,
"Lyude Paul" <lyude@redhat.com>, "Thomas Huth" <thuth@redhat.com>,
"Sohil Mehta" <sohil.mehta@intel.com>,
"Pawan Gupta" <pawan.kumar.gupta@linux.intel.com>,
"Sean Christopherson" <seanjc@google.com>,
"Nikunj A Dadhania" <nikunj@amd.com>,
"Xin Li (Intel)" <xin@zytor.com>,
"Joel Fernandes" <joelagnelf@nvidia.com>,
"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
"Randy Dunlap" <rdunlap@infradead.org>,
"Yury Norov" <ynorov@nvidia.com>,
"Sebastian Andrzej Siewior" <bigeasy@linutronix.de>,
linux-kernel@vger.kernel.org, linux-openrisc@vger.kernel.org,
linux-s390@vger.kernel.org, linux-arch@vger.kernel.org,
bpf@vger.kernel.org, linux-kselftest@vger.kernel.org,
rust-for-linux@vger.kernel.org
Subject: [PATCH v3 00/13] Refcounted interrupt disable and SpinLockIrq for rust (Part 1)
Date: Thu, 4 Jun 2026 22:41:15 -0700 [thread overview]
Message-ID: <20260605054128.5925-1-boqun@kernel.org> (raw)
Hi Peter,
Please take a look at the v3 of refcounted interrupt disabling.
Changes since v2:
- Fix NMI_OFFSET underflow issue reported by sashiko. See patch #1
(__nmi_ext()) and #10 (__preempt_count_nmi_exit()) for details: we
have to replace preempt_count_sub() with preempt_count_set().
- Add WARN_ON_ONCE(in_nmi()) in local_interrupt_disable() per Peter.
- Remove the use of should_resched() in local_interrupt_enable(), see
patch #13.
- Remove my gmail in SoB.
v1: https://lore.kernel.org/rust-for-linux/20260508042111.24358-1-boqun@kernel.org/
v2:
Boqun Feng (9):
preempt: Introduce HARDIRQ_DISABLE_BITS
preempt: Introduce __preempt_count_{sub, add}_return()
irq & spin_lock: Add counted interrupt disabling/enabling
locking: Switch to _irq_{disable,enable}() variants in cleanup guards
sched: Remove the unused preempt_offset parameter of __cant_sleep()
sched: Avoid signed comparison of preempt_count() in __cant_migrate()
preempt: Introduce HAS_SEPARATE_PREEMPT_RESCHED_BITS
arm64: sched/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS
irq: Optimize reschedule check in local_interrupt_enable()
Heiko Carstens (1):
s390/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS
Joel Fernandes (1):
preempt: Track NMI nesting to separate per-CPU counter
Lyude Paul (2):
openrisc: Include <linux/cpumask.h> in smp.h
irq: Add KUnit test for refcounted interrupt enable/disable
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/preempt.h | 18 +++
arch/openrisc/include/asm/smp.h | 2 +
arch/s390/Kconfig | 1 +
arch/s390/include/asm/lowcore.h | 13 ++-
arch/s390/include/asm/preempt.h | 49 ++++----
arch/x86/Kconfig | 1 +
arch/x86/include/asm/preempt.h | 61 +++++++---
arch/x86/kernel/cpu/common.c | 2 +-
include/asm-generic/preempt.h | 14 +++
include/linux/hardirq.h | 41 ++++++-
include/linux/interrupt_rc.h | 76 ++++++++++++
include/linux/kernel.h | 4 +-
include/linux/preempt.h | 35 ++++--
include/linux/spinlock.h | 49 +++++---
include/linux/spinlock_api_smp.h | 41 +++++++
include/linux/spinlock_api_up.h | 16 +++
include/linux/spinlock_rt.h | 18 +++
kernel/Kconfig.preempt | 4 +
kernel/irq/Makefile | 1 +
kernel/irq/refcount_interrupt_test.c | 109 ++++++++++++++++++
kernel/locking/spinlock.c | 29 +++++
kernel/sched/core.c | 18 ++-
kernel/softirq.c | 22 +++-
lib/locking-selftest.c | 2 +-
.../testing/selftests/bpf/bpf_experimental.h | 7 +-
26 files changed, 554 insertions(+), 80 deletions(-)
create mode 100644 include/linux/interrupt_rc.h
create mode 100644 kernel/irq/refcount_interrupt_test.c
--
2.51.0
next reply other threads:[~2026-06-05 5:41 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-05 5:41 Boqun Feng [this message]
2026-06-05 5:41 ` [PATCH v3 01/13] preempt: Track NMI nesting to separate per-CPU counter Boqun Feng
2026-06-05 5:41 ` [PATCH v3 02/13] preempt: Introduce HARDIRQ_DISABLE_BITS Boqun Feng
2026-06-05 5:41 ` [PATCH v3 03/13] preempt: Introduce __preempt_count_{sub, add}_return() Boqun Feng
2026-06-05 6:30 ` bot+bpf-ci
2026-06-05 6:45 ` Boqun Feng
2026-06-05 5:41 ` [PATCH v3 04/13] openrisc: Include <linux/cpumask.h> in smp.h Boqun Feng
2026-06-05 5:41 ` [PATCH v3 05/13] irq & spin_lock: Add counted interrupt disabling/enabling Boqun Feng
2026-06-05 6:30 ` bot+bpf-ci
2026-06-05 6:40 ` Boqun Feng
2026-06-05 5:41 ` [PATCH v3 06/13] irq: Add KUnit test for refcounted interrupt enable/disable Boqun Feng
2026-06-05 5:41 ` [PATCH v3 07/13] locking: Switch to _irq_{disable,enable}() variants in cleanup guards Boqun Feng
2026-06-05 5:41 ` [PATCH v3 08/13] sched: Remove the unused preempt_offset parameter of __cant_sleep() Boqun Feng
2026-06-05 5:41 ` [PATCH v3 09/13] sched: Avoid signed comparison of preempt_count() in __cant_migrate() Boqun Feng
2026-06-05 5:41 ` [PATCH v3 10/13] preempt: Introduce HAS_SEPARATE_PREEMPT_RESCHED_BITS Boqun Feng
2026-06-05 6:30 ` bot+bpf-ci
2026-06-05 5:41 ` [PATCH v3 11/13] arm64: sched/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS Boqun Feng
2026-06-05 5:41 ` [PATCH v3 12/13] s390/preempt: " Boqun Feng
2026-06-05 5:41 ` [PATCH v3 13/13] irq: Optimize reschedule check in local_interrupt_enable() Boqun Feng
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