[PW_SID:1097880] kdump: reduce vmcore size and capture time by linux-riscv-bot · Pull Request #1981 · linux-riscv/linux

linux-riscv-bot · 2026-05-20T10:27:38Z

PR for series 1097880 applied to workflow__riscv__fixes

Name: kdump: reduce vmcore size and capture time
URL: https://patchwork.kernel.org/project/linux-riscv/list/?series=1097880
Version: 2

From: Wandun Chen <chenwandun@lixiang.com> Prepare for an upcoming change that appends /memreserve/ entries to reserved_mem[]; such entries have no name. No functional change. Signed-off-by: Wandun Chen <chenwandun@lixiang.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

…_DUMP=n From: Wandun Chen <chenwandun@lixiang.com> Prepare for an upcoming change that excludes non-dumpable reserved regions from the kdump vmcore and will call crash_exclude_mem_range() from generic, non-arch code. No functional change. Signed-off-by: Wandun Chen <chenwandun@lixiang.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

From: Wandun Chen <chenwandun@lixiang.com> Add a 'dumpable' flag to struct reserved_mem so the kernel can decide whether a reserved area should be included in the kdump vmcore. Most reserved regions are owned by devices and do not contain data useful for kernel crash analysis, so excluding them by default is the right behaviour. Reusable CMA regions are different: pages in a CMA region are handed back to the buddy allocator and may contain key data for crash analysis, so set dumpable to true in rmem_cma_setup(). Suggested-by: Rob Herring <robh@kernel.org> Signed-off-by: Wandun Chen <chenwandun@lixiang.com> Tested-by: Meijing Zhao <zhaomeijing@lixiang.com> Link: https://lore.kernel.org/all/20260506144542.GA2072596-robh@kernel.org/ Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

From: Wandun Chen <chenwandun@lixiang.com> /memreserve/ is used by firmware or bootloaders, such regions hold no useful data for crash analysis, they should be excluded from the kdump vmcore, so save /memreserve/ entries into the reserved_mem array for later exclusion. If a /memreserve/ entry overlaps any dumpable reserved region, mark the whole memreserve entry dumpable as well. This may keep slightly more memory in vmcore than strictly necessary, but avoids splitting entries and never drops data that may be useful for crash analysis. Signed-off-by: Wandun Chen <chenwandun@lixiang.com> Tested-by: Meijing Zhao <zhaomeijing@lixiang.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

From: Wandun Chen <chenwandun@lixiang.com> Add two helpers to exclude non-dumpable regions for arch-specific code. - of_reserved_mem_kdump_nr_ranges() returns the count of regions that are not dumpable. Each excluded region may split an existing crash_mem range into two, so callers use this to calculate crash_mem allocation size. - of_reserved_mem_kdump_exclude() walks reserved_mem[] and calls crash_exclude_mem_range() for every non-dumpable region. Signed-off-by: Wandun Chen <chenwandun@lixiang.com> Tested-by: Meijing Zhao <zhaomeijing@lixiang.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

From: Wandun Chen <chenwandun@lixiang.com> Reserved memory regions are excluded from vmcore by default unless marked dumpable. Honor the dumpable flag to filter out device firmware regions (e.g., GPU, DSP, modem) reserved via device tree, since they typically contain data not useful for kernel crash analysis and can significantly increase vmcore size. Use of_reserved_mem_kdump_exclude() to perform the exclusion, and pre-size the crash_mem array via of_reserved_mem_kdump_nr_ranges(). Signed-off-by: Wandun Chen <chenwandun@lixiang.com> Tested-by: Meijing Zhao <zhaomeijing@lixiang.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

From: Wandun Chen <chenwandun@lixiang.com> Apply the same non-dumpable reserved memory filtering to RISC-V kdump as was done for arm64. Use of_reserved_mem_kdump_exclude() to drop flagged regions from the elfcorehdr PT_LOAD segments, and of_reserved_mem_kdump_nr_ranges() to pre-size the crash_mem array. Signed-off-by: Wandun Chen <chenwandun@lixiang.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

…mcore From: Wandun Chen <chenwandun@lixiang.com> Apply the same non-dumpable reserved memory filtering to LoongArch kdump as was done for arm64. Use of_reserved_mem_kdump_exclude() to drop flagged regions from the elfcorehdr PT_LOAD segments, and of_reserved_mem_kdump_nr_ranges() to pre-size the crash_mem array. Signed-off-by: Wandun Chen <chenwandun@lixiang.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

linux-riscv-bot · 2026-05-20T10:33:19Z

Patch 1: "[v2,1/8] of: reserved_mem: handle NULL name in of_reserved_mem_lookup()"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 114.47 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T10:52:00Z

Patch 1: "[v2,1/8] of: reserved_mem: handle NULL name in of_reserved_mem_lookup()"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1119.82 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T11:19:25Z

Patch 1: "[v2,1/8] of: reserved_mem: handle NULL name in of_reserved_mem_lookup()"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1643.14 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T11:19:47Z

Patch 1: "[v2,1/8] of: reserved_mem: handle NULL name in of_reserved_mem_lookup()"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 19.70 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T11:20:10Z

Patch 1: "[v2,1/8] of: reserved_mem: handle NULL name in of_reserved_mem_lookup()"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 20.86 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T11:20:12Z

Patch 1: "[v2,1/8] of: reserved_mem: handle NULL name in of_reserved_mem_lookup()"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 0.61 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T11:21:32Z

Patch 1: "[v2,1/8] of: reserved_mem: handle NULL name in of_reserved_mem_lookup()"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 77.76 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T11:21:34Z

Patch 1: "[v2,1/8] of: reserved_mem: handle NULL name in of_reserved_mem_lookup()"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.47 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T11:21:36Z

Patch 1: "[v2,1/8] of: reserved_mem: handle NULL name in of_reserved_mem_lookup()"
kdoc
Desc: Detects for kdoc errors
Duration: 0.72 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T11:21:38Z

Patch 1: "[v2,1/8] of: reserved_mem: handle NULL name in of_reserved_mem_lookup()"
module-param
Desc: Detect module_param changes
Duration: 0.25 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T11:21:40Z

Patch 1: "[v2,1/8] of: reserved_mem: handle NULL name in of_reserved_mem_lookup()"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T11:21:43Z

Patch 1: "[v2,1/8] of: reserved_mem: handle NULL name in of_reserved_mem_lookup()"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.83 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T11:23:53Z

Patch 2: "[v2,2/8] kexec/crash: provide crash_exclude_mem_range() stub when CONFIG_CRASH_DUMP=n"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 114.94 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T11:42:58Z

Patch 2: "[v2,2/8] kexec/crash: provide crash_exclude_mem_range() stub when CONFIG_CRASH_DUMP=n"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1143.28 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T12:11:03Z

Patch 2: "[v2,2/8] kexec/crash: provide crash_exclude_mem_range() stub when CONFIG_CRASH_DUMP=n"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1683.07 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T12:11:24Z

Patch 2: "[v2,2/8] kexec/crash: provide crash_exclude_mem_range() stub when CONFIG_CRASH_DUMP=n"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 19.38 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T12:11:47Z

Patch 2: "[v2,2/8] kexec/crash: provide crash_exclude_mem_range() stub when CONFIG_CRASH_DUMP=n"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 21.02 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T12:11:49Z

Patch 2: "[v2,2/8] kexec/crash: provide crash_exclude_mem_range() stub when CONFIG_CRASH_DUMP=n"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 0.61 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T12:13:10Z

Patch 2: "[v2,2/8] kexec/crash: provide crash_exclude_mem_range() stub when CONFIG_CRASH_DUMP=n"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 78.26 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T12:13:12Z

Patch 2: "[v2,2/8] kexec/crash: provide crash_exclude_mem_range() stub when CONFIG_CRASH_DUMP=n"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.26 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T12:13:15Z

Patch 2: "[v2,2/8] kexec/crash: provide crash_exclude_mem_range() stub when CONFIG_CRASH_DUMP=n"
kdoc
Desc: Detects for kdoc errors
Duration: 0.70 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:31:39Z

Patch 6: "[v2,6/8] arm64: kdump: exclude non-dumpable reserved memory regions from vmcore"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 1.40 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:31:41Z

Patch 6: "[v2,6/8] arm64: kdump: exclude non-dumpable reserved memory regions from vmcore"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 1.04 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:33:52Z

Patch 7: "[v2,7/8] riscv: kdump: exclude non-dumpable reserved memory regions from vmcore"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 114.91 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:52:34Z

Patch 7: "[v2,7/8] riscv: kdump: exclude non-dumpable reserved memory regions from vmcore"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1120.41 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T16:20:06Z

Patch 7: "[v2,7/8] riscv: kdump: exclude non-dumpable reserved memory regions from vmcore"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1650.63 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T16:20:28Z

Patch 7: "[v2,7/8] riscv: kdump: exclude non-dumpable reserved memory regions from vmcore"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 19.56 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T16:20:50Z

Patch 7: "[v2,7/8] riscv: kdump: exclude non-dumpable reserved memory regions from vmcore"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 20.89 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T16:20:53Z

Patch 7: "[v2,7/8] riscv: kdump: exclude non-dumpable reserved memory regions from vmcore"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 0.60 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T16:22:12Z

Patch 7: "[v2,7/8] riscv: kdump: exclude non-dumpable reserved memory regions from vmcore"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 77.31 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T16:22:14Z

Patch 7: "[v2,7/8] riscv: kdump: exclude non-dumpable reserved memory regions from vmcore"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T16:22:16Z

Patch 7: "[v2,7/8] riscv: kdump: exclude non-dumpable reserved memory regions from vmcore"
kdoc
Desc: Detects for kdoc errors
Duration: 0.70 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T16:22:18Z

Patch 7: "[v2,7/8] riscv: kdump: exclude non-dumpable reserved memory regions from vmcore"
module-param
Desc: Detect module_param changes
Duration: 0.24 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T16:22:20Z

Patch 7: "[v2,7/8] riscv: kdump: exclude non-dumpable reserved memory regions from vmcore"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T16:22:22Z

Patch 7: "[v2,7/8] riscv: kdump: exclude non-dumpable reserved memory regions from vmcore"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.27 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T16:24:41Z

Patch 8: "[v2,8/8] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 123.19 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T16:41:39Z

Patch 8: "[v2,8/8] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1016.61 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T17:04:30Z

Patch 8: "[v2,8/8] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1368.51 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T17:04:51Z

Patch 8: "[v2,8/8] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 19.50 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T17:05:14Z

Patch 8: "[v2,8/8] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 20.82 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T17:05:16Z

Patch 8: "[v2,8/8] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 0.62 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T17:06:34Z

Patch 8: "[v2,8/8] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 75.81 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T17:06:36Z

Patch 8: "[v2,8/8] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.24 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T17:06:39Z

Patch 8: "[v2,8/8] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore"
kdoc
Desc: Detects for kdoc errors
Duration: 0.72 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T17:06:41Z

Patch 8: "[v2,8/8] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore"
module-param
Desc: Detect module_param changes
Duration: 0.24 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T17:06:42Z

Patch 8: "[v2,8/8] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T17:06:44Z

Patch 8: "[v2,8/8] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.27 seconds
Result: PASS

Linux RISC-V bot and others added 9 commits May 14, 2026 08:49

Adding CI files

cd9d421

linux-riscv-bot force-pushed the workflow__riscv__fixes branch 2 times, most recently from a1231b7 to c03cdce Compare May 23, 2026 03:29

linux-riscv-bot closed this May 27, 2026

linux-riscv-bot deleted the pw1097880 branch May 27, 2026 07:04

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