diff options
Diffstat (limited to 'arch/x86_64/vdso/vextern.h')
| -rw-r--r-- | arch/x86_64/vdso/vextern.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86_64/vdso/vextern.h b/arch/x86_64/vdso/vextern.h new file mode 100644 index 00000000000..1683ba2ae3e --- /dev/null +++ b/arch/x86_64/vdso/vextern.h @@ -0,0 +1,16 @@ +#ifndef VEXTERN +#include <asm/vsyscall.h> +#define VEXTERN(x) \ + extern typeof(x) *vdso_ ## x __attribute__((visibility("hidden"))); +#endif + +#define VMAGIC 0xfeedbabeabcdefabUL + +/* Any kernel variables used in the vDSO must be exported in the main + kernel's vmlinux.lds.S/vsyscall.h/proper __section and + put into vextern.h and be referenced as a pointer with vdso prefix. + The main kernel later fills in the values. */ + +VEXTERN(jiffies) +VEXTERN(vgetcpu_mode) +VEXTERN(vsyscall_gtod_data) |