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Commit 433bd805 authored by Andy Lutomirski's avatar Andy Lutomirski Committed by H. Peter Anvin
Browse files

clocksource: Replace vread with generic arch data 



The vread field was bloating struct clocksource everywhere except
x86_64, and I want to change the way this works on x86_64, so let's
split it out into per-arch data.

Cc: x86@kernel.org
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: linux-ia64@vger.kernel.org
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarAndy Lutomirski <luto@mit.edu>
Link: http://lkml.kernel.org/r/3ae5ec76a168eaaae63f08a2a1060b91aa0b7759.1310563276.git.luto@mit.edu


Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
parent 7f79ad15

arch/x86/include/asm/clocksource.h

0 → 100644
+16 −0
Original line number Diff line number Diff line 
/* x86-specific clocksource additions */



#ifndef _ASM_X86_CLOCKSOURCE_H

#define _ASM_X86_CLOCKSOURCE_H



#ifdef CONFIG_X86_64



#define __ARCH_HAS_CLOCKSOURCE_DATA



struct arch_clocksource_data {

	cycle_t (*vread)(void);

};



#endif /* CONFIG_X86_64 */



#endif /* _ASM_X86_CLOCKSOURCE_H */

arch/x86/kernel/hpet.c

+1 −1
Original line number Diff line number Diff line
@@ -753,7 +753,7 @@ static struct clocksource clocksource_hpet = { 
	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,

	.resume		= hpet_resume_counter,

#ifdef CONFIG_X86_64

	.vread		= vread_hpet,

	.archdata	= { .vread = vread_hpet },

#endif

};

arch/x86/kernel/tsc.c

+1 −1
Original line number Diff line number Diff line
@@ -777,7 +777,7 @@ static struct clocksource clocksource_tsc = { 
	.flags                  = CLOCK_SOURCE_IS_CONTINUOUS |

				  CLOCK_SOURCE_MUST_VERIFY,

#ifdef CONFIG_X86_64

	.vread                  = vread_tsc,

	.archdata               = { .vread = vread_tsc },

#endif

};

arch/x86/kernel/vsyscall_64.c

+1 −1
Original line number Diff line number Diff line
@@ -74,7 +74,7 @@ void update_vsyscall(struct timespec *wall_time, struct timespec *wtm, 
	write_seqlock_irqsave(&vsyscall_gtod_data.lock, flags);



	/* copy vsyscall data */

	vsyscall_gtod_data.clock.vread		= clock->vread;

	vsyscall_gtod_data.clock.vread		= clock->archdata.vread;

	vsyscall_gtod_data.clock.cycle_last	= clock->cycle_last;

	vsyscall_gtod_data.clock.mask		= clock->mask;

	vsyscall_gtod_data.clock.mult		= mult;

include/asm-generic/clocksource.h

0 → 100644
+4 −0
Original line number Diff line number Diff line 
/*

 * Architectures should override this file to add private userspace

 * clock magic if needed.

 */