futex: Flag conversion

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Futex has 3 sets of flags:

 - legacy futex op bits
 - futex2 flags
 - internal flags

Add a few helpers to convert from the API flags into the internal
flags.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: André Almeida <andrealmeid@igalia.com>
Link: https://lore.kernel.org/r/20230921105247.722140574@noisy.programming.kicks-ass.net

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peterz@infradead.org 2023-09-21 12:45:08 +02:00 • committed by Peter Zijlstra

parent d6d08d2479

commit 5694289ce1

3 changed files with 71 additions and 20 deletions

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63

kernel/futex/futex.h

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24

kernel/futex/syscalls.c

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4

kernel/futex/waitwake.c

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