Messages in this thread | | | From | Thomas Weißschuh <> | Subject | [PATCH v2 0/8] reduce maximum memory usage | Date | Tue, 27 Dec 2022 16:00:57 +0000 |
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The processing of vmlinux.o with objtool is the most memory-intensive step of a kernel build. By reducing the maximum memory usage here we can reduce the maximum memory usage of the whole kernel build. Therefore memory pressure on memory starved machines is relieved during kernel builds and the build is faster as less swapping has to occur.
To: Josh Poimboeuf <jpoimboe@kernel.org> To: Peter Zijlstra <peterz@infradead.org> Cc: linux-kernel@vger.kernel.org Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
--- Changes in v2: - Warn on out of range values for reloc->type - Also reduce size of struct special_alt - Note: v1 did not make it to the lists, only to individual recipients
--- Thomas Weißschuh (8): objtool: make struct entries[] static and const objtool: make struct check_options static objtool: allocate multiple structures with calloc() objtool: introduce function elf_reloc_set_type objtool: reduce memory usage of struct reloc objtool: optimize layout of struct symbol objtool: optimize layout of struct special_alt objtool: explicitly cleanup resources on success
tools/objtool/builtin-check.c | 4 ++- tools/objtool/check.c | 6 ++-- tools/objtool/elf.c | 56 +++++++++++++++++++-------------- tools/objtool/include/objtool/builtin.h | 2 -- tools/objtool/include/objtool/elf.h | 13 +++++--- tools/objtool/include/objtool/special.h | 2 +- tools/objtool/special.c | 6 ++-- 7 files changed, 51 insertions(+), 38 deletions(-) --- base-commit: 1b929c02afd37871d5afb9d498426f83432e71c2 change-id: 20221216-objtool-memory-06db3b8bf111
Best regards, -- Thomas Weißschuh <linux@weissschuh.net>
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