diff options
| author | Uros Bizjak <[email protected]> | 2023-11-14 17:12:01 +0100 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2023-12-10 17:21:33 -0800 |
| commit | 0311d8272406b2ec47f485bef887723cc352a489 (patch) | |
| tree | 0938025c927835f78755743039c308cf598bd3fc /include/linux/debugobjects.h | |
| parent | 1ee918ffa6d4776a69708b013fd7e7006619158a (diff) | |
kexec: use atomic_try_cmpxchg in crash_kexec
Use atomic_try_cmpxchg instead of cmpxchg (*ptr, old, new) == old in
crash_kexec(). x86 CMPXCHG instruction returns success in ZF flag,
so this change saves a compare after cmpxchg.
No functional change intended.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Uros Bizjak <[email protected]>
Acked-by: Baoquan He <[email protected]>
Cc: Eric Biederman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'include/linux/debugobjects.h')
0 files changed, 0 insertions, 0 deletions