From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
Subject: | pgsql: Add RISC-V spinlock support in s_lock.h. |
Date: | 2021-08-13 18:00:23 |
Message-ID: | E1mEbTj-0005Fe-Vi@gemulon.postgresql.org |
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Lists: | pgsql-committers |
Add RISC-V spinlock support in s_lock.h.
Like the ARM case, just use gcc's __sync_lock_test_and_set();
that will compile into AMOSWAP.W.AQ which does what we need.
At some point it might be worth doing some work on atomic ops
for RISC-V, but this should be enough for a creditable port.
Back-patch to all supported branches, just in case somebody
wants to try them on RISC-V.
Marek Szuba
Discussion: https://postgr.es/m/dea97b6d-f55f-1f6d-9109-504aa7dfa421@gentoo.org
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/c32fcac56a212b4e6bb5ba63596f60a25a18109a
Modified Files
--------------
src/include/storage/s_lock.h | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
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