[PW_SID:1118643] futex: Use runtime constants for futex_hash computation by linux-riscv-bot · Pull Request #2166 · linux-riscv/linux

linux-riscv-bot · 2026-06-30T06:46:59Z

PR for series 1118643 applied to workflow__riscv__fixes

Name: futex: Use runtime constants for futex_hash computation
URL: https://patchwork.kernel.org/project/linux-riscv/list/?series=1118643
Version: 5

Futex hash computation requires a mask operation with read-only after init data that will be converted to a runtime constant in the subsequent commit. Introduce runtime_const_mask_32 to further optimize the mask operation in the futex hash computation hot path. [ prateek: Broke off the x86 chunk, commit message. ] Link: https://patch.msgid.link/20260227161841.GH606826@noisy.programming.kicks-ass.net Not-yet-signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

The current scheme to directly patch the kernel text for runtime constants runs into the following issue with futex adapted to using runtime constants on arm64: Unable to handle kernel write to read-only memory at virtual address ... The pc points to the *p assignment in the following call chain: futex_init() runtime_const_init(shift, __futex_shift) __runtime_fixup_shift() *p = cpu_to_le32(insn); which suggests that core_initcall() is too late to patch the kernel text directly unlike the "d_hash_shift" which is initialized during vfs_caches_init_early() before the protections are in place. Use aarch64_insn_patch_text_nosync() to patch the runtime constants instead of doing it directly to allow runtime_const_init() slightly later into the boot. Since aarch64_insn_patch_text_nosync() calls caches_clean_inval_pou() internally, __runtime_fixup_caches() ends up being redundant. runtime_const_init() are rare and the overheads of multiple calls to caches_clean_inval_pou() instead of batching them together should be negligible in practice. The cpu_to_le32() conversion of instruction isn't necessary since it is handled later in the aarch64_insn_patch_text_nosync() call-chain: aarch64_insn_patch_text_nosync(addr, insn) aarch64_insn_write(addr, insn) __aarch64_insn_write(addr, cpu_to_le32(insn)) Sashiko noted that aarch64_insn_patch_text_nosync() does not expect a lm_alias() address and Catalin suggested it is safe to drop the lm_alias() for runtime patching since the kernel text is readable. The address passed to fixup function is interpreted as a __le32 and dereferenced as is to read the opcode at the patch site. No functional changes are intended. Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Futex hash computation requires a mask operation with read-only after init data that will be converted to a runtime constant in the subsequent commit. Introduce runtime_const_mask_32 to further optimize the mask operation in the futex hash computation hot path. Since all the current use-cases are of the form GENMASK(n, 0), with n > 0, a single: ubfx w0, w0, #0, #widthm1 // w0 = w0 [widthm1:0] instruction is used for amd64 to improve instruction dinsity and performance. "Arm A-profile A64 Instruction Set Architecture" manual, Sec. "A64 -- Base Instructions" [1] for UBFX instruction highlights the immediate "width" is encoded as width minus 1 in imms (Bits [15:10]) which is patched by __runtime_fixup_mask() once the mask is known. If a future use case arises that needs to tackle arbitrary mask, consider using: movz w1, #lo16, lsl #0 movk w1, #hi16, lsl #16 to patch the 32-bit mask in the asm block and return "__ret & (val)" from runtime_const_mask_32() which allows compiler to further optimize the logical and operation. __runtime_fixup_ptr() already patches a "movz, + movk lsl #16" sequence which can be reused when the need arises. A possible implementation for this alternate scheme can be found at [2]. Assisted-by: Claude:claude-sonnet-4-6 Suggested-by: Samuel Holland <samuel.holland@sifive.com> Suggested-by: Charlie Jenkins <thecharlesjenkins@gmail.com> Link: https://developer.arm.com/documentation/ddi0602/2026-03/Base-Instructions/ [1] Link: https://lore.kernel.org/lkml/20260430094730.31624-4-kprateek.nayak@amd.com/ [2] Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Define the placeholder used for lui + addi[w] patching sequence as RUNTIME_MAGIC and use that instead of open coding the constants in the inline assembly. No functional changes intended. Suggested-by: Guo Ren <guoren@kernel.org> Reviewed-by: Charlie Jenkins <thecharlesjenkins@gmail.com> Tested-by: Charlie Jenkins <thecharlesjenkins@gmail.com> Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Futex hash computation requires a mask operation with read-only after init data that will be converted to a runtime constant in the subsequent commit. Introduce runtime_const_mask_32 to further optimize the mask operation in the futex hash computation hot path. Since all the current use-cases are of the form GENMASK(n, 0), with n > 0, following sequence: srli a0, a1, imm slli a0, a0, imm is used for RISC-V where imm = (31 - width) to improve instruction density and performance. "The RISC-V Instruction Set Manual, Volume I - Unprivileged Architecture" [1] Sec. 2.4.1 "Integer Register-Immediate Instructions" notes the immediate shift for SRLI and SLLI are 5 bits wide starting at bit #10. __runtime_fixup_shift() is reused to patch the immediate shifts for the two instructions. If a future use case arises that needs to tackle arbitrary mask, consider using: lui a0, 0x12346 # upper; +0x800 then >>12 for correct rounding addi a0, a0, 0x678 # lower 12 bits to patch the 32-bit mask in the asm block and return "__ret & (val)" from runtime_const_mask_32() which allows compiler to further optimize the logical and operation. __runtime_fixup_ptr() already patches a lui + addi sequence which can be reused when the need arises. A possible implementation for this alternate scheme can be found at [2]. Assisted-by: Claude:claude-sonnet-4-5 Suggested-by: Samuel Holland <samuel.holland@sifive.com> Suggested-by: Charlie Jenkins <thecharlesjenkins@gmail.com> Link: https://docs.riscv.org/reference/isa/_attachments/riscv-unprivileged.pdf [1] Link: https://lore.kernel.org/lkml/20260430094730.31624-6-kprateek.nayak@amd.com/ [2] Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Futex hash computation requires a mask operation with read-only after init data that will be converted to a runtime constant in the subsequent commit. Introduce runtime_const_mask_32 to further optimize the mask operation in the futex hash computation hot path. GCC generates a: nilf %r1,<imm32> to tackle arbitrary 32-bit masks and the same is implemented here. Immediate patching pattern for __runtime_fixup_mask() has been adopted from __runtime_fixup_ptr(). Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Add a dummy runtime_const_mask_32() for all the architectures that do not support runtime-const. Link: https://patch.msgid.link/20260227161841.GH606826@noisy.programming.kicks-ass.net Not-yet-signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Runtime constify the read-only after init data __futex_shift(shift_32), __futex_mask(mask_32), and __futex_queues(ptr) used in __futex_hash() hot path to avoid referencing global variable. This also allows __futex_queues to be allocated dynamically to "nr_node_ids" slots instead of reserving config dependent MAX_NUMNODES (1 << CONFIG_NODES_SHIFT) worth of slots upfront. Runtime constants are initialized before their first access and runtime_const_init() provides necessary barrier to ensure subsequent accesses are not reordered against their initialization. No functional changes intended. [ prateek: Dynamically allocate __futex_queues, mark the global data __ro_after_init since they are constified after futex_init(). ] Link: https://patch.msgid.link/20260227161841.GH606826@noisy.programming.kicks-ass.net Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> # MAX_NUMNODES bloat Not-yet-signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

linux-riscv-bot · 2026-06-30T06:53:06Z

Patch 1: "[v5,1/8] x86/runtime-const: Introduce runtime_const_mask_32()"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 155.76 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T07:12:27Z

Patch 1: "[v5,1/8] x86/runtime-const: Introduce runtime_const_mask_32()"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1159.12 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T07:38:28Z

Patch 1: "[v5,1/8] x86/runtime-const: Introduce runtime_const_mask_32()"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1559.53 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T07:38:59Z

Patch 1: "[v5,1/8] x86/runtime-const: Introduce runtime_const_mask_32()"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 29.41 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T07:39:31Z

Patch 1: "[v5,1/8] x86/runtime-const: Introduce runtime_const_mask_32()"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 30.97 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T07:39:35Z

Patch 1: "[v5,1/8] x86/runtime-const: Introduce runtime_const_mask_32()"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 2.02 seconds
Result: WARNING
Output:

CHECK: spaces preferred around that '+' (ctx:VxV)
#32: FILE: arch/x86/include/asm/runtime-const.h:45:
+	typeof(0u+(val)) __ret = (val);				\
 	         ^

total: 0 errors, 0 warnings, 1 checks, 26 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 483176702398 ("x86/runtime-const: Introduce runtime_const_mask_32()") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 0 warnings, 1 checks, 26 lines checked
CHECK: spaces preferred around that '+' (ctx:VxV)

linux-riscv-bot · 2026-06-30T07:41:03Z

Patch 1: "[v5,1/8] x86/runtime-const: Introduce runtime_const_mask_32()"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 86.50 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T07:41:05Z

Patch 1: "[v5,1/8] x86/runtime-const: Introduce runtime_const_mask_32()"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.41 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T07:41:07Z

Patch 1: "[v5,1/8] x86/runtime-const: Introduce runtime_const_mask_32()"
kdoc
Desc: Detects for kdoc errors
Duration: 1.19 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T07:41:09Z

Patch 1: "[v5,1/8] x86/runtime-const: Introduce runtime_const_mask_32()"
module-param
Desc: Detect module_param changes
Duration: 0.43 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T07:41:11Z

Patch 1: "[v5,1/8] x86/runtime-const: Introduce runtime_const_mask_32()"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.35 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T07:41:14Z

Patch 1: "[v5,1/8] x86/runtime-const: Introduce runtime_const_mask_32()"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 1.75 seconds
Result: ERROR
Output:

Commit 483176702398 ("x86/runtime-const: Introduce runtime_const_mask_32()")
	author Signed-off-by missing
	author email:    peterz@infradead.org
	committer email: linux.riscv.bot@gmail.com
	Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
	Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Errors in tree with Signed-off-by, please fix!

linux-riscv-bot · 2026-06-30T07:44:02Z

Patch 2: "[v5,2/8] arm64/runtime-const: Use aarch64_insn_patch_text_nosync() for patching"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 150.81 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T08:03:35Z

Patch 2: "[v5,2/8] arm64/runtime-const: Use aarch64_insn_patch_text_nosync() for patching"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1171.93 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T08:27:56Z

Patch 2: "[v5,2/8] arm64/runtime-const: Use aarch64_insn_patch_text_nosync() for patching"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1459.20 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T08:28:28Z

Patch 2: "[v5,2/8] arm64/runtime-const: Use aarch64_insn_patch_text_nosync() for patching"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 30.32 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T08:29:01Z

Patch 2: "[v5,2/8] arm64/runtime-const: Use aarch64_insn_patch_text_nosync() for patching"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 31.20 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T08:29:04Z

Patch 2: "[v5,2/8] arm64/runtime-const: Use aarch64_insn_patch_text_nosync() for patching"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 1.95 seconds
Result: WARNING
Output:

CHECK: Consider using #include <linux/text-patching.h> instead of <asm/text-patching.h>
#64: FILE: arch/arm64/include/asm/runtime-const.h:10:
+#include <asm/text-patching.h>

total: 0 errors, 0 warnings, 1 checks, 45 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 09ed5875d61c ("arm64/runtime-const: Use aarch64_insn_patch_text_nosync() for patching") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 0 warnings, 1 checks, 45 lines checked
CHECK: Consider using #include <linux/text-patching.h> instead of <asm/text-patching.h>

linux-riscv-bot · 2026-06-30T08:30:35Z

Patch 2: "[v5,2/8] arm64/runtime-const: Use aarch64_insn_patch_text_nosync() for patching"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 89.44 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T08:30:37Z

Patch 2: "[v5,2/8] arm64/runtime-const: Use aarch64_insn_patch_text_nosync() for patching"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.41 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T08:30:40Z

Patch 2: "[v5,2/8] arm64/runtime-const: Use aarch64_insn_patch_text_nosync() for patching"
kdoc
Desc: Detects for kdoc errors
Duration: 1.08 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T12:28:47Z

Patch 6: "[v5,6/8] s390/runtime-const: Introduce runtime_const_mask_32()"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.39 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T12:28:49Z

Patch 6: "[v5,6/8] s390/runtime-const: Introduce runtime_const_mask_32()"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.61 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T12:31:37Z

Patch 7: "[v5,7/8] asm-generic/runtime-const: Add dummy runtime_const_mask_32()"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 152.08 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T12:51:52Z

Patch 7: "[v5,7/8] asm-generic/runtime-const: Add dummy runtime_const_mask_32()"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1213.23 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T13:17:06Z

Patch 7: "[v5,7/8] asm-generic/runtime-const: Add dummy runtime_const_mask_32()"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1512.99 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T13:17:37Z

Patch 7: "[v5,7/8] asm-generic/runtime-const: Add dummy runtime_const_mask_32()"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 29.35 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T13:18:11Z

Patch 7: "[v5,7/8] asm-generic/runtime-const: Add dummy runtime_const_mask_32()"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 31.21 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T13:18:15Z

Patch 7: "[v5,7/8] asm-generic/runtime-const: Add dummy runtime_const_mask_32()"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 2.30 seconds
Result: WARNING
Output:

CHECK: spaces preferred around that '&' (ctx:VxV)
#25: FILE: include/asm-generic/runtime-const.h:13:
+#define runtime_const_mask_32(val, sym) ((u32)(val)&(sym))
                                                    ^

total: 0 errors, 0 warnings, 1 checks, 7 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 7d56cc9757ce ("asm-generic/runtime-const: Add dummy runtime_const_mask_32()") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 0 warnings, 1 checks, 7 lines checked
CHECK: spaces preferred around that '&' (ctx:VxV)

linux-riscv-bot · 2026-06-30T13:19:42Z

Patch 7: "[v5,7/8] asm-generic/runtime-const: Add dummy runtime_const_mask_32()"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 85.50 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T13:19:44Z

Patch 7: "[v5,7/8] asm-generic/runtime-const: Add dummy runtime_const_mask_32()"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.45 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T13:19:47Z

Patch 7: "[v5,7/8] asm-generic/runtime-const: Add dummy runtime_const_mask_32()"
kdoc
Desc: Detects for kdoc errors
Duration: 1.26 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T13:19:49Z

Patch 7: "[v5,7/8] asm-generic/runtime-const: Add dummy runtime_const_mask_32()"
module-param
Desc: Detect module_param changes
Duration: 0.44 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T13:19:51Z

Patch 7: "[v5,7/8] asm-generic/runtime-const: Add dummy runtime_const_mask_32()"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.47 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T13:19:54Z

Patch 7: "[v5,7/8] asm-generic/runtime-const: Add dummy runtime_const_mask_32()"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 1.58 seconds
Result: ERROR
Output:

Commit 7d56cc9757ce ("asm-generic/runtime-const: Add dummy runtime_const_mask_32()")
	author Signed-off-by missing
	author email:    peterz@infradead.org
	committer email: linux.riscv.bot@gmail.com
	Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
	Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Errors in tree with Signed-off-by, please fix!

linux-riscv-bot · 2026-06-30T13:22:43Z

Patch 8: "[v5,8/8] futex: Use runtime constants for __futex_hash() hot path"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 152.35 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T13:47:26Z

Patch 8: "[v5,8/8] futex: Use runtime constants for __futex_hash() hot path"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1481.39 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T14:18:42Z

Patch 8: "[v5,8/8] futex: Use runtime constants for __futex_hash() hot path"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1874.51 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T14:19:14Z

Patch 8: "[v5,8/8] futex: Use runtime constants for __futex_hash() hot path"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 29.93 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T14:19:47Z

Patch 8: "[v5,8/8] futex: Use runtime constants for __futex_hash() hot path"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 31.15 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T14:19:50Z

Patch 8: "[v5,8/8] futex: Use runtime constants for __futex_hash() hot path"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 2.27 seconds
Result: WARNING
Output:

WARNING: Reported-by: should be immediately followed by Closes: or Link: with a URL to the report
#24: 
Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> # MAX_NUMNODES bloat
Not-yet-signed-off-by: Peter Zijlstra <peterz@infradead.org>

WARNING: Do not crash the kernel unless it is absolutely unavoidable--use WARN_ON_ONCE() plus recovery code (if feasible) instead of BUG() or variants
#127: FILE: kernel/futex/core.c:2030:
+	BUG_ON(!futex_queues());

total: 0 errors, 2 warnings, 0 checks, 97 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 1ea36550057d ("futex: Use runtime constants for __futex_hash() hot path") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 2 warnings, 0 checks, 97 lines checked
WARNING: Do not crash the kernel unless it is absolutely unavoidable--use WARN_ON_ONCE() plus recovery code (if feasible) instead of BUG() or variants
WARNING: Reported-by: should be immediately followed by Closes: or Link: with a URL to the report

linux-riscv-bot · 2026-06-30T14:21:21Z

Patch 8: "[v5,8/8] futex: Use runtime constants for __futex_hash() hot path"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 88.54 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T14:21:23Z

Patch 8: "[v5,8/8] futex: Use runtime constants for __futex_hash() hot path"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.53 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T14:21:25Z

Patch 8: "[v5,8/8] futex: Use runtime constants for __futex_hash() hot path"
kdoc
Desc: Detects for kdoc errors
Duration: 1.04 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T14:21:27Z

Patch 8: "[v5,8/8] futex: Use runtime constants for __futex_hash() hot path"
module-param
Desc: Detect module_param changes
Duration: 0.47 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T14:21:29Z

Patch 8: "[v5,8/8] futex: Use runtime constants for __futex_hash() hot path"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.52 seconds
Result: PASS

linux-riscv-bot · 2026-06-30T14:21:32Z

Patch 8: "[v5,8/8] futex: Use runtime constants for __futex_hash() hot path"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 1.47 seconds
Result: ERROR
Output:

Commit 1ea36550057d ("futex: Use runtime constants for __futex_hash() hot path")
	author Signed-off-by missing
	author email:    peterz@infradead.org
	committer email: linux.riscv.bot@gmail.com
	Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
	Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Errors in tree with Signed-off-by, please fix!

Linux RISC-V bot and others added 9 commits June 25, 2026 20:36

Adding CI files

4d827ba

linux-riscv-bot force-pushed the workflow__riscv__fixes branch 2 times, most recently from 89be0ce to dc5ff20 Compare July 7, 2026 03:25

linux-riscv-bot closed this Jul 8, 2026

linux-riscv-bot deleted the pw1118643 branch July 8, 2026 01:56

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