Use ISB as a spin-delay instruction on ARM64.
This seems beneficial on high-core-count machines, and not harmful
on lesser hardware. However, older ARM32 gear doesn't have this
instruction, so restrict the patch to ARM64.
Geoffrey Blake
Discussion: https://postgr.es/m/78338F29-9D7F-4DC8-BD71-E9674CE71425@amazon.com
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/a82a5eee314df52f3183cedc0ecbcac7369243b1
Modified Files
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src/include/storage/s_lock.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)