tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel / scripts / atomic / fallbacks / try_cmpxchg
at v5.10-rc1 11 lines 254 B view raw
1cat <<EOF 2static __always_inline bool 3${arch}${atomic}_try_cmpxchg${order}(${atomic}_t *v, ${int} *old, ${int} new) 4{ 5 ${int} r, o = *old; 6 r = ${arch}${atomic}_cmpxchg${order}(v, o, new); 7 if (unlikely(r != o)) 8 *old = r; 9 return likely(r == o); 10} 11EOF