Release 4.14 arch/powerpc/include/asm/timex.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_TIMEX_H

#define _ASM_POWERPC_TIMEX_H

#ifdef __KERNEL__

/*
 * PowerPC architecture timex specifications
 */

#include <asm/cputable.h>
#include <asm/reg.h>


#define CLOCK_TICK_RATE	1024000 
/* Underlying HZ */


typedef unsigned long cycles_t;



static inline cycles_t get_cycles(void)
{
#ifdef __powerpc64__
	return mftb();
#else
	cycles_t ret;

	/*
         * For the "cycle" counter we use the timebase lower half.
         * Currently only used on SMP.
         */

	ret = 0;

	__asm__ __volatile__(
#ifdef CONFIG_PPC_8xx
		"97:    mftb %0\n"
#else
		"97:    mfspr %0, %2\n"
#endif
		"99:\n"
                ".section __ftr_fixup,\"a\"\n"
                ".align 2\n"
                "98:\n"
                "       .long %1\n"
                "       .long 0\n"
                "       .long 97b-98b\n"
                "       .long 99b-98b\n"
                "       .long 0\n"
                "       .long 0\n"
                ".previous"
                : "=r" (ret) : "i" (CPU_FTR_601), "i" (SPRN_TBRL));
	return ret;
#endif
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Christophe Leroy
12
27.27%
3
42.86%
Linus Torvalds (pre-git)
11
25.00%
1
14.29%
Jon Loeliger
10
22.73%
1
14.29%
Benjamin Herrenschmidt
9
20.45%
1
14.29%
Linus Torvalds
2
4.55%
1
14.29%
Total
44
100.00%
7
100.00%

#endif	/* __KERNEL__ */
#endif	/* _ASM_POWERPC_TIMEX_H */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
30
38.96%
4
33.33%
Jon Loeliger
18
23.38%
1
8.33%
Benjamin Herrenschmidt
13
16.88%
2
16.67%
Christophe Leroy
12
15.58%
3
25.00%
Linus Torvalds
3
3.90%
1
8.33%
Greg Kroah-Hartman
1
1.30%
1
8.33%
Total
77
100.00%
12
100.00%
Directory: arch/powerpc/include/asm

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