[PW_SID:1055840] use runtime constant to optimize handle_arch_irq access by linux-riscv-bot · Pull Request #1482 · linux-riscv/linux

linux-riscv-bot · 2026-02-20T10:09:52Z

PR for series 1055840 applied to workflow__riscv__fixes

Name: use runtime constant to optimize handle_arch_irq access
URL: https://patchwork.kernel.org/project/linux-riscv/list/?series=1055840
Version: 1

We will use the runtime constant to optimize the handle_arch_irq accessing. This is preparation patch. Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Currently, on GENERIC_IRQ_MULTI_HANDLER platforms, the handle_arch_irq is a pointer which is set during booting, and every irq processing needs to access it, so it sits in hot code path. We can use the runtime constant mechanism which was introduced by Linus to speed up its accessing. Tested on Sipeed Lichee Pi 4A (riscv64) board, the perf sched benchmark is improved by ~5.8% Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Currently, on arm64 platforms, the handle_arch_irq is a pointer which is set during booting, and every irq processing needs to access it, so it sits in hot code path. We can use the runtime constant mechanism which was introduced by Linus to speed up its accessing. Tested on Quad CA55 platform, the perf sched benchmark is improved by ~6.5% Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

linux-riscv-bot · 2026-02-20T10:15:47Z

Patch 1: "[1/3] vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 143.12 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T10:35:07Z

Patch 1: "[1/3] vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1158.95 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T11:02:48Z

Patch 1: "[1/3] vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1658.83 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T11:03:19Z

Patch 1: "[1/3] vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 29.44 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T11:03:51Z

Patch 1: "[1/3] vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 31.05 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T11:03:54Z

Patch 1: "[1/3] vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 1.02 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T11:05:22Z

Patch 1: "[1/3] vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 86.52 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T11:05:24Z

Patch 1: "[1/3] vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.24 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T11:05:27Z

Patch 1: "[1/3] vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section"
kdoc
Desc: Detects for kdoc errors
Duration: 0.93 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T11:05:28Z

Patch 1: "[1/3] vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section"
module-param
Desc: Detect module_param changes
Duration: 0.26 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T11:05:30Z

Patch 1: "[1/3] vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T11:05:32Z

Patch 1: "[1/3] vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.31 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T11:08:12Z

Patch 2: "[2/3] genirq: use runtime constant to optimize handle_arch_irq access"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 142.47 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T11:39:18Z

Patch 2: "[2/3] genirq: use runtime constant to optimize handle_arch_irq access"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1864.41 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T12:22:33Z

Patch 2: "[2/3] genirq: use runtime constant to optimize handle_arch_irq access"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 2594.01 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T12:23:04Z

Patch 2: "[2/3] genirq: use runtime constant to optimize handle_arch_irq access"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 28.82 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T12:23:35Z

Patch 2: "[2/3] genirq: use runtime constant to optimize handle_arch_irq access"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 29.80 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T12:23:38Z

Patch 2: "[2/3] genirq: use runtime constant to optimize handle_arch_irq access"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 1.16 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T12:25:05Z

Patch 2: "[2/3] genirq: use runtime constant to optimize handle_arch_irq access"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 85.79 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T12:25:07Z

Patch 2: "[2/3] genirq: use runtime constant to optimize handle_arch_irq access"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T12:25:10Z

Patch 2: "[2/3] genirq: use runtime constant to optimize handle_arch_irq access"
kdoc
Desc: Detects for kdoc errors
Duration: 1.01 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T12:25:12Z

Patch 2: "[2/3] genirq: use runtime constant to optimize handle_arch_irq access"
module-param
Desc: Detect module_param changes
Duration: 0.25 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T12:25:13Z

Patch 2: "[2/3] genirq: use runtime constant to optimize handle_arch_irq access"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.21 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T12:25:15Z

Patch 2: "[2/3] genirq: use runtime constant to optimize handle_arch_irq access"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.29 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T12:27:52Z

Patch 3: "[3/3] arm64: use runtime constant to optimize handle_arch_irq access"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 141.93 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T12:44:55Z

Patch 3: "[3/3] arm64: use runtime constant to optimize handle_arch_irq access"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1020.93 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T13:07:39Z

Patch 3: "[3/3] arm64: use runtime constant to optimize handle_arch_irq access"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1362.47 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T13:08:09Z

Patch 3: "[3/3] arm64: use runtime constant to optimize handle_arch_irq access"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 28.66 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T13:08:41Z

Patch 3: "[3/3] arm64: use runtime constant to optimize handle_arch_irq access"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 30.11 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T13:08:43Z

Patch 3: "[3/3] arm64: use runtime constant to optimize handle_arch_irq access"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 1.35 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T13:10:12Z

Patch 3: "[3/3] arm64: use runtime constant to optimize handle_arch_irq access"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 86.51 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T13:10:14Z

Patch 3: "[3/3] arm64: use runtime constant to optimize handle_arch_irq access"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T13:10:16Z

Patch 3: "[3/3] arm64: use runtime constant to optimize handle_arch_irq access"
kdoc
Desc: Detects for kdoc errors
Duration: 1.01 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T13:10:18Z

Patch 3: "[3/3] arm64: use runtime constant to optimize handle_arch_irq access"
module-param
Desc: Detect module_param changes
Duration: 0.25 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T13:10:20Z

Patch 3: "[3/3] arm64: use runtime constant to optimize handle_arch_irq access"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.22 seconds
Result: PASS

linux-riscv-bot · 2026-02-20T13:10:22Z

Patch 3: "[3/3] arm64: use runtime constant to optimize handle_arch_irq access"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.29 seconds
Result: PASS

xhackerustc added 3 commits February 20, 2026 10:09

vmlinux.lds.h: add _handle_arch_irq RUNTIME_CONST section

2f312da

We will use the runtime constant to optimize the handle_arch_irq accessing. This is preparation patch. Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Comments

Conversation

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

linux-riscv-bot commented Feb 20, 2026

Uh oh!

Reviewers

Assignees

Labels

Projects