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linux-yocto/scripts/atomic/fallbacks/fetch_add_unless
Ingo Molnar 4d8e5cd233 locking/atomics: Fix scripts/atomic/ script permissions 
Mark all these scripts executable.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: linuxdrivers@attotech.com
Cc: dvyukov@google.com
Cc: boqun.feng@gmail.com
Cc: arnd@arndb.de
Cc: aryabinin@virtuozzo.com
Cc: glider@google.com
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-11-01 12:45:46 +01:00

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cat << EOF /**

  • ${atomic}_fetch_add_unless - add unless the number is already a given value

  • @v: pointer of type ${atomic}_t

  • @a: the amount to add to v...

  • @u: ...unless v is equal to u.

  • Atomically adds @a to @v, so long as @v was not already @u.

  • Returns original value of @v */ static inline ${int} ${atomic}_fetch_add_unless(${atomic}_t *v, ${int} a, ${int} u) { ${int} c = ${atomic}_read(v);

    do { if (unlikely(c == u)) break; } while (!${atomic}_try_cmpxchg(v, &c, c + a));

    return c; } EOF