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| author | Menglong Dong <menglong8.dong@gmail.com> | 2025-09-17 14:09:13 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-07 06:12:09 +0900 |
| commit | 338b781aa914f56b1c50e80b732eaca4816a9518 (patch) | |
| tree | 15171fc4af13f3d5f0184d7849f6970948373c82 /arch/powerpc/kernel | |
| parent | 37cd03cbccd2511e8ea82895d5292427cb60752f (diff) | |
| download | linux-338b781aa914f56b1c50e80b732eaca4816a9518.tar.gz linux-338b781aa914f56b1c50e80b732eaca4816a9518.tar.bz2 linux-338b781aa914f56b1c50e80b732eaca4816a9518.zip | |
arch: Add the macro COMPILE_OFFSETS to all the asm-offsets.c
[ Upstream commit 35561bab768977c9e05f1f1a9bc00134c85f3e28 ]
The include/generated/asm-offsets.h is generated in Kbuild during
compiling from arch/SRCARCH/kernel/asm-offsets.c. When we want to
generate another similar offset header file, circular dependency can
happen.
For example, we want to generate a offset file include/generated/test.h,
which is included in include/sched/sched.h. If we generate asm-offsets.h
first, it will fail, as include/sched/sched.h is included in asm-offsets.c
and include/generated/test.h doesn't exist; If we generate test.h first,
it can't success neither, as include/generated/asm-offsets.h is included
by it.
In x86_64, the macro COMPILE_OFFSETS is used to avoid such circular
dependency. We can generate asm-offsets.h first, and if the
COMPILE_OFFSETS is defined, we don't include the "generated/test.h".
And we define the macro COMPILE_OFFSETS for all the asm-offsets.c for this
purpose.
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/asm-offsets.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 65d79dd0c92c..5a4edc1e5504 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -8,6 +8,7 @@ * compile this file to assembler, and then extract the * #defines from the assembly-language output. */ +#define COMPILE_OFFSETS #include <linux/compat.h> #include <linux/signal.h> |