From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/alpha/include/asm/timex.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 arch/alpha/include/asm/timex.h (limited to 'arch/alpha/include/asm/timex.h') diff --git a/arch/alpha/include/asm/timex.h b/arch/alpha/include/asm/timex.h new file mode 100644 index 000000000..f89798da8 --- /dev/null +++ b/arch/alpha/include/asm/timex.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * linux/include/asm-alpha/timex.h + * + * ALPHA architecture timex specifications + */ +#ifndef _ASMALPHA_TIMEX_H +#define _ASMALPHA_TIMEX_H + +/* With only one or two oddballs, we use the RTC as the ticker, selecting + the 32.768kHz reference clock, which nicely divides down to our HZ. */ +#define CLOCK_TICK_RATE 32768 + +/* + * Standard way to access the cycle counter. + * Currently only used on SMP for scheduling. + * + * Only the low 32 bits are available as a continuously counting entity. + * But this only means we'll force a reschedule every 8 seconds or so, + * which isn't an evil thing. + */ + +typedef unsigned int cycles_t; + +static inline cycles_t get_cycles (void) +{ + cycles_t ret; + __asm__ __volatile__ ("rpcc %0" : "=r"(ret)); + return ret; +} +#define get_cycles get_cycles + +#endif -- cgit v1.2.3