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authorChristian Borntraeger <cborntra@de.ibm.com>2006-04-27 21:40:24 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-28 11:33:48 -0400
commit58268b97f679108d32a882a7fc029585da801975 (patch)
tree5b416785ab2fc75f5f26f56863b96329e274fe08 /arch
parentb73d40c6178f2c8b2d574db566b47f36e3d12072 (diff)
[PATCH] s390: add read_mostly optimization
Add a read_mostly section and define __read_mostly to prevent cache line pollution due to writes for mostly read variables. In addition fix the incorrect alignment of the cache_line_aligned data section. s390 has a cacheline size of 256 bytes. Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/kernel/vmlinux.lds.S4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 9289face3027..9f34bb54c051 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -58,9 +58,11 @@ SECTIONS
58 . = ALIGN(4096); 58 . = ALIGN(4096);
59 .data.page_aligned : { *(.data.idt) } 59 .data.page_aligned : { *(.data.idt) }
60 60
61 . = ALIGN(32); 61 . = ALIGN(256);
62 .data.cacheline_aligned : { *(.data.cacheline_aligned) } 62 .data.cacheline_aligned : { *(.data.cacheline_aligned) }
63 63
64 . = ALIGN(256);
65 .data.read_mostly : { *(.data.read_mostly) }
64 _edata = .; /* End of data section */ 66 _edata = .; /* End of data section */
65 67
66 . = ALIGN(8192); /* init_task */ 68 . = ALIGN(8192); /* init_task */