kernel-ark/arch/x86/vdso/vvar.c
Roland McGrath 06f99ac87e x86: vdso put vars in rodata
This adds a const to the definitions vvar.c makes, so that the vdso_*
variables go into .rodata instead of .data.  This is essentially a
cosmetic change, just giving the section headers in the vDSO file more
pleasing flags. These variables are read-only from the perspective of
the vDSO itself and user mode, even though the contents of the DSO image
were adjusted at boot.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-17 20:16:43 +02:00

13 lines
460 B
C

/* Define pointer to external vDSO variables.
These are part of the vDSO. The kernel fills in the real addresses
at boot time. This is done because when the vdso is linked the
kernel isn't yet and we don't know the final addresses. */
#include <linux/kernel.h>
#include <linux/time.h>
#include <asm/vsyscall.h>
#include <asm/timex.h>
#include <asm/vgtod.h>
#define VEXTERN(x) typeof (__ ## x) *const vdso_ ## x = (void *)VMAGIC;
#include "vextern.h"