| Message ID | 36d7ee5122e3a9c2b307cf6ab1a9508860fd7710.1695679700.git.falcon@tinylab.org (mailing list archive) |
|---|---|
| State | Changes Requested |
| Headers | show |
| Series | DCE/DSE: Add Dead Syscalls Elimination support, part1 | expand |
| Context | Check | Description |
|---|---|---|
| conchuod/cover_letter | success | Series has a cover letter |
| conchuod/tree_selection | success | Guessed tree name to be for-next at HEAD 0bb80ecc33a8 |
| conchuod/fixes_present | success | Fixes tag not required for -next series |
| conchuod/maintainers_pattern | success | MAINTAINERS pattern errors before the patch: 5 and now 5 |
| conchuod/verify_signedoff | success | Signed-off-by tag matches author and committer |
| conchuod/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| conchuod/build_rv64_clang_allmodconfig | success | Errors and warnings before: 12 this patch: 12 |
| conchuod/module_param | success | Was 0 now: 0 |
| conchuod/build_rv64_gcc_allmodconfig | success | Errors and warnings before: 13 this patch: 13 |
| conchuod/build_rv32_defconfig | success | Build OK |
| conchuod/dtb_warn_rv64 | success | Errors and warnings before: 29 this patch: 29 |
| conchuod/header_inline | success | No static functions without inline keyword in header files |
| conchuod/checkpatch | warning | WARNING: please write a help paragraph that fully describes the config symbol |
| conchuod/build_rv64_nommu_k210_defconfig | success | Build OK |
| conchuod/verify_fixes | success | No Fixes tag |
| conchuod/build_rv64_nommu_virt_defconfig | success | Build OK |
diff --git a/Makefile b/Makefile index 57698d048e2c..a4e522b747cb 100644 --- a/Makefile +++ b/Makefile @@ -938,6 +938,9 @@ ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections=y LDFLAGS_vmlinux += --gc-sections +ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION_DEBUG +LDFLAGS_vmlinux += --print-gc-sections +endif endif ifdef CONFIG_SHADOW_CALL_STACK diff --git a/init/Kconfig b/init/Kconfig index 6d35728b94b2..4350d8ba7db4 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1404,6 +1404,13 @@ config LD_DEAD_CODE_DATA_ELIMINATION present. This option is not well tested yet, so use at your own risk. +config LD_DEAD_CODE_DATA_ELIMINATION_DEBUG + bool "Debug dead code and data elimination (EXPERIMENTAL)" + depends on LD_DEAD_CODE_DATA_ELIMINATION + default n + help + Enable --print-gc-sections for --gc-sections + config LD_ORPHAN_WARN def_bool y depends on ARCH_WANT_LD_ORPHAN_WARN
Enable --print-gc-sections for --gc-sections to monitor which sections are really eliminated. Signed-off-by: Zhangjin Wu <falcon@tinylab.org> --- Makefile | 3 +++ init/Kconfig | 7 +++++++ 2 files changed, 10 insertions(+)