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clocksource: Change __ARCH_HAS_CLOCKSOURCE_DATA to a CONFIG option 

The machinery for __ARCH_HAS_CLOCKSOURCE_DATA assumed a file in
asm-generic would be the default for architectures without their own
file in asm/, but that is not how it works.

Replace it with a Kconfig option instead.

Link: http://lkml.kernel.org/r/4E288AA6.7090804@zytor.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Andy Lutomirski <luto@mit.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Tony Luck <tony.luck@intel.com>
hifive-unleashed-5.1
H. Peter Anvin 2011-07-21 13:34:05 -07:00
parent 8c400f6ce0
commit ae7bd11b47
6 changed files with 10 additions and 9 deletions
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3
arch/ia64/Kconfig
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@ -101,6 +101,9 @@ config GENERIC_IOMAP
bool
default y
config ARCH_CLOCKSOURCE_DATA
def_bool y
config SCHED_OMIT_FRAME_POINTER
bool
default y

2
arch/ia64/include/asm/clocksource.h
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@ -3,8 +3,6 @@
#ifndef _ASM_IA64_CLOCKSOURCE_H
#define _ASM_IA64_CLOCKSOURCE_H
#define __ARCH_HAS_CLOCKSOURCE_DATA
struct arch_clocksource_data {
void *fsys_mmio; /* used by fsyscall asm code */
};

4
arch/x86/Kconfig
View File

@ -93,6 +93,10 @@ config CLOCKSOURCE_WATCHDOG
config GENERIC_CLOCKEVENTS
def_bool y
config ARCH_CLOCKSOURCE_DATA
def_bool y
depends on X86_64
config GENERIC_CLOCKEVENTS_BROADCAST
def_bool y
depends on X86_64 || (X86_32 && X86_LOCAL_APIC)

2
arch/x86/include/asm/clocksource.h
View File

@ -5,8 +5,6 @@
#ifdef CONFIG_X86_64
#define __ARCH_HAS_CLOCKSOURCE_DATA
#define VCLOCK_NONE 0 /* No vDSO clock available. */
#define VCLOCK_TSC 1 /* vDSO should use vread_tsc. */
#define VCLOCK_HPET 2 /* vDSO should use vread_hpet. */

4
include/asm-generic/clocksource.h
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@ -1,4 +0,0 @@
/*
* Architectures should override this file to add private userspace
* clock magic if needed.
*/

4
include/linux/clocksource.h
View File

@ -22,7 +22,9 @@
typedef u64 cycle_t;
struct clocksource;
#ifdef CONFIG_ARCH_CLOCKSOURCE_DATA
#include <asm/clocksource.h>
#endif
/**
* struct cyclecounter - hardware abstraction for a free running counter
@ -171,7 +173,7 @@ struct clocksource {
u32 shift;
u64 max_idle_ns;
#ifdef __ARCH_HAS_CLOCKSOURCE_DATA
#ifdef CONFIG_ARCH_CLOCKSOURCE_DATA
struct arch_clocksource_data archdata;
#endif