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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/linux/atomic-fallback.h | |
| 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/linux/atomic-fallback.h')
| -rw-r--r-- | include/linux/atomic-fallback.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/atomic-fallback.h b/include/linux/atomic-fallback.h index 1c02c0112fbb..a7d240e465c0 100644 --- a/include/linux/atomic-fallback.h +++ b/include/linux/atomic-fallback.h @@ -2292,3 +2292,4 @@ atomic64_dec_if_positive(atomic64_t *v) #define atomic64_cond_read_relaxed(v, c) smp_cond_load_relaxed(&(v)->counter, (c)) #endif /* _LINUX_ATOMIC_FALLBACK_H */ +// 25de4a2804d70f57e994fe3b419148658bb5378a |