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locking/atomic: Add generic try_cmpxchg{,64}_local() support

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Add generic support for try_cmpxchg{,64}_local() and their falbacks.

These provides the generic try_cmpxchg_local family of functions
from the arch_ prefixed version, also adding explicit instrumentation.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20230405141710.3551-2-ubizjak@gmail.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Uros Bizjak 2023-04-05 16:17:06 +02:00 • committed by Ingo Molnar
parent 286deb7ec0
commit e6ce9d7411
4 changed files with 47 additions and 3 deletions
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4
scripts/atomic/gen-atomic-fallback.sh
View file

@ -225,6 +225,10 @@ for cmpxchg in "cmpxchg" "cmpxchg64"; do
gen_try_cmpxchg_fallbacks "${cmpxchg}"
done
for cmpxchg in "cmpxchg_local" "cmpxchg64_local"; do
gen_try_cmpxchg_fallback "${cmpxchg}" ""
done
grep '^[a-z]' "$1" | while read name meta args; do
gen_proto "${meta}" "${name}" "atomic" "int" ${args}
done

2
scripts/atomic/gen-atomic-instrumented.sh
View file

@ -173,7 +173,7 @@ for xchg in "xchg" "cmpxchg" "cmpxchg64" "try_cmpxchg" "try_cmpxchg64"; do
done
done
for xchg in "cmpxchg_local" "cmpxchg64_local" "sync_cmpxchg"; do
for xchg in "cmpxchg_local" "cmpxchg64_local" "sync_cmpxchg" "try_cmpxchg_local" "try_cmpxchg64_local" ; do
gen_xchg "${xchg}" "" ""
printf "\n"
done