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Remove --disable-spinlocks.

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A later change will require atomic support, so it wouldn't make sense
for a hypothetical new system not to be able to implement spinlocks.

Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> (concept, not the patch)
Reviewed-by: Andres Freund <andres@anarazel.de> (concept, not the patch)
Discussion: https://postgr.es/m/3351991.1697728588%40sss.pgh.pa.us
This commit is contained in:
Thomas Munro
2024-07-30 21:45:01 +12:00
parent 1330843bb7
commit e25626677f
20 changed files with 13 additions and 486 deletions
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37
doc/src/sgml/installation.sgml
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@ -1258,22 +1258,6 @@ build-postgresql:
</listitem>
</varlistentry>
<varlistentry id="configure-option-disable-spinlocks">
<term><option>--disable-spinlocks</option></term>
<listitem>
<para>
Allow the build to succeed even if <productname>PostgreSQL</productname>
has no CPU spinlock support for the platform. The lack of
spinlock support will result in very poor performance; therefore,
this option should only be used if the build aborts and
informs you that the platform lacks spinlock support. If this
option is required to build <productname>PostgreSQL</productname> on
your platform, please report the problem to the
<productname>PostgreSQL</productname> developers.
</para>
</listitem>
</varlistentry>
<varlistentry id="configure-option-disable-atomics">
<term><option>--disable-atomics</option></term>
<listitem>
@ -2690,23 +2674,6 @@ ninja install
</listitem>
</varlistentry>
<varlistentry id="configure-spinlocks-meson">
<term><option>-Dspinlocks={ true | false }</option></term>
<listitem>
<para>
This option is set to true by default; setting it to false will
allow the build to succeed even if <productname>PostgreSQL</productname>
has no CPU spinlock support for the platform. The lack of
spinlock support will result in very poor performance; therefore,
this option should only be changed if the build aborts and
informs you that the platform lacks spinlock support. If setting this
option to false is required to build <productname>PostgreSQL</productname> on
your platform, please report the problem to the
<productname>PostgreSQL</productname> developers.
</para>
</listitem>
</varlistentry>
<varlistentry id="configure-atomics-meson">
<term><option>-Datomics={ true | false }</option></term>
<listitem>
@ -2719,6 +2686,7 @@ ninja install
</para>
</listitem>
</varlistentry>
</variablelist>
</sect3>
@ -3393,9 +3361,6 @@ export MANPATH
these CPU architectures: x86, PowerPC, S/390, SPARC, ARM, MIPS,
and RISC-V, including
big-endian, little-endian, 32-bit, and 64-bit variants where applicable.
It is often
possible to build on an unsupported CPU type by configuring with
<option>--disable-spinlocks</option>, but performance will be poor.
</para>
<para>