Author: jhibbits
Date: Sun Aug 19 19:00:44 2018
New Revision: 338071
URL: https://svnweb.freebsd.org/changeset/base/338071
Log:
powerpc64: Align frequently used/exclusive data on cacheline boundaries
This is effectively a merge from amd64 of r312888, r323235, and r333486.
I've been running this on my POWER9 Talos for some time now with no ill
effects.
Suggested by: mjg
Modified:
head/sys/conf/ldscript.powerpc64
Modified: head/sys/conf/ldscript.powerpc64
==============================================================================
--- head/sys/conf/ldscript.powerpc64 Sun Aug 19 18:55:33 2018
(r338070)
+++ head/sys/conf/ldscript.powerpc64 Sun Aug 19 19:00:44 2018
(r338071)
@@ -69,6 +69,20 @@ SECTIONS
.sbss2 : { *(.sbss2) }
/* Adjust the address for the data segment to the next page up. */
. = ALIGN(4096);
+ .data.read_frequently :
+ {
+ *(SORT_BY_ALIGNMENT(.data.read_frequently))
+ }
+ .data.read_mostly :
+ {
+ *(.data.read_mostly)
+ }
+ . = ALIGN(128);
+ .data.exclusive_cache_line :
+ {
+ *(.data.exclusive_cache_line)
+ }
+ . = ALIGN(128);
.data :
{
*(.data)
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