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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2005-11-11 05:15:21 -0500
committerPaul Mackerras <paulus@samba.org>2005-11-11 06:25:39 -0500
commita7f290dad32ee34d931561b7943c858fe2aae503 (patch)
tree850f04ed9ffba8aef6e151fa9c9e8a0c667bb795 /include/asm-ppc/page.h
parent6761c4a07378e19e3710bb69cea65795774529b1 (diff)
[PATCH] powerpc: Merge vdso's and add vdso support to 32 bits kernel
This patch moves the vdso's to arch/powerpc, adds support for the 32 bits vdso to the 32 bits kernel, rename systemcfg (finally !), and adds some new (still untested) routines to both vdso's: clock_gettime() with support for CLOCK_REALTIME and CLOCK_MONOTONIC, clock_getres() (same clocks) and get_tbfreq() for glibc to retreive the timebase frequency. Tom,Steve: The implementation of get_tbfreq() I've done for 32 bits returns a long long (r3, r4) not a long. This is such that if we ever add support for >4Ghz timebases on ppc32, the userland interface won't have to change. I have tested gettimeofday() using some glibc patches in both ppc32 and ppc64 kernels using 32 bits userland (I haven't had a chance to test a 64 bits userland yet, but the implementation didn't change and was tested earlier). I haven't tested yet the new functions. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-ppc/page.h')
-rw-r--r--include/asm-ppc/page.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/asm-ppc/page.h b/include/asm-ppc/page.h
index fc44f7ca62d7..538e0c8ab243 100644
--- a/include/asm-ppc/page.h
+++ b/include/asm-ppc/page.h
@@ -1,9 +1,12 @@
1#ifndef _PPC_PAGE_H 1#ifndef _PPC_PAGE_H
2#define _PPC_PAGE_H 2#define _PPC_PAGE_H
3 3
4#include <linux/config.h>
5#include <asm/asm-compat.h>
6
4/* PAGE_SHIFT determines the page size */ 7/* PAGE_SHIFT determines the page size */
5#define PAGE_SHIFT 12 8#define PAGE_SHIFT 12
6#define PAGE_SIZE (1UL << PAGE_SHIFT) 9#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
7 10
8/* 11/*
9 * Subtle: this is an int (not an unsigned long) and so it 12 * Subtle: this is an int (not an unsigned long) and so it
@@ -169,5 +172,8 @@ extern __inline__ int get_order(unsigned long size)
169#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ 172#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
170 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) 173 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
171 174
175/* We do define AT_SYSINFO_EHDR but don't use the gate mecanism */
176#define __HAVE_ARCH_GATE_AREA 1
177
172#endif /* __KERNEL__ */ 178#endif /* __KERNEL__ */
173#endif /* _PPC_PAGE_H */ 179#endif /* _PPC_PAGE_H */