From: Tony Breeds <tony@bakeyournoodle.com>
To: <linuxppc-dev@ozlabs.org>
Subject: [PATCH 3/3] Initial cut to add __read_mostly support for powerpc.
Date: Wed, 04 Jul 2007 14:04:31 +1000 [thread overview]
Message-ID: <20070704040431.1ED7832C46E@thor> (raw)
In-Reply-To: <1183521871.36329.499255149967.qpush@thor>
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
---
This didn't get musch feedback the first time I posted it, so it's either
perfect ;P or it got missed.
arch/powerpc/kernel/vmlinux.lds.S | 6 ++++++
include/asm-powerpc/cache.h | 2 ++
2 files changed, 8 insertions(+)
Index: working/arch/powerpc/kernel/vmlinux.lds.S
===================================================================
--- working.orig/arch/powerpc/kernel/vmlinux.lds.S
+++ working/arch/powerpc/kernel/vmlinux.lds.S
@@ -7,6 +7,7 @@
#define PROVIDE32(x) PROVIDE(x)
#endif
#include <asm-generic/vmlinux.lds.h>
+#include <asm/cache.h>
ENTRY(_stext)
@@ -211,6 +212,11 @@ SECTIONS
*(.data.cacheline_aligned)
}
+ . = ALIGN(L1_CACHE_BYTES);
+ .data.read_mostly : {
+ *(.data.read_mostly)
+ }
+
. = ALIGN(PAGE_SIZE);
__data_nosave : {
__nosave_begin = .;
Index: working/include/asm-powerpc/cache.h
===================================================================
--- working.orig/include/asm-powerpc/cache.h
+++ working/include/asm-powerpc/cache.h
@@ -34,5 +34,9 @@ struct ppc64_caches {
extern struct ppc64_caches ppc64_caches;
#endif /* __powerpc64__ && ! __ASSEMBLY__ */
+#if !defined(__ASSEMBLY__)
+#define __read_mostly __attribute__((__section__(".data.read_mostly")))
+#endif
+
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_CACHE_H */
prev parent reply other threads:[~2007-07-04 4:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-04 4:04 [PATCH 0/3] Patches for consideration for 2.6.23 Tony Breeds
2007-07-04 4:04 ` [PATCH 2/3] Modify sched_clock() to make CONFIG_PRINTK_TIME more sane Tony Breeds
2007-07-04 4:27 ` Michael Ellerman
2007-07-04 4:40 ` Tony Breeds
2007-07-04 4:04 ` [PATCH 1/3] Create a dummy zImage if no valid platform has been selected Tony Breeds
2007-07-04 4:04 ` Tony Breeds [this message]
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