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| author | Mark Rutland <mark.rutland@arm.com> | 2019-02-11 16:20:35 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-02-13 10:07:31 +0300 |
| commit | 0cf264b3133dce56a60ca8b4335d1f76fe26870a (patch) | |
| tree | 9afbe4db4847974c5f357fde4fd76f92aaa37b01 /include/asm-generic | |
| parent | b14e77f89aca1c2763f65dc274b5837a185ab13f (diff) | |
| download | linux-0cf264b3133dce56a60ca8b4335d1f76fe26870a.tar.xz | |
locking/atomics: Check atomic headers with sha1sum
We currently check the atomic headers at build-time to ensure they
haven't been modified directly, and these checks require regenerating
the headers in full. As this takes a few seconds, even when
parallelized, this is too slow to run for every kernel build.
Instead, we can generate a hash of each header as we generate them,
which we can cheaply check at build time (~0.16s for all headers).
This patch does so, updating headers with their hashes using the new
gen-atomics.sh script. As some users apparently build the kernel wihout
coreutils, lacking sha1sum, the checks are skipped in this case.
Presumably, most developers have a working coreutils installation.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: anders.roxell@linaro.org
Cc: linux-kernel@vger.kernel.rg
Cc: naresh.kamboju@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/atomic-instrumented.h | 1 | ||||
| -rw-r--r-- | include/asm-generic/atomic-long.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-generic/atomic-instrumented.h b/include/asm-generic/atomic-instrumented.h index b8f5b35216e1..e8730c6b9fe2 100644 --- a/include/asm-generic/atomic-instrumented.h +++ b/include/asm-generic/atomic-instrumented.h @@ -1785,3 +1785,4 @@ atomic64_dec_if_positive(atomic64_t *v) }) #endif /* _ASM_GENERIC_ATOMIC_INSTRUMENTED_H */ +// b29b625d5de9280f680e42c7be859b55b15e5f6a diff --git a/include/asm-generic/atomic-long.h b/include/asm-generic/atomic-long.h index a833d385a70b..881c7e27af28 100644 --- a/include/asm-generic/atomic-long.h +++ b/include/asm-generic/atomic-long.h @@ -1010,3 +1010,4 @@ atomic_long_dec_if_positive(atomic_long_t *v) #endif /* CONFIG_64BIT */ #endif /* _ASM_GENERIC_ATOMIC_LONG_H */ +// 77558968132ce4f911ad53f6f52ce423006f6268 |