mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 14:15:10 +07:00
fe7dc7202d
Patch 8a4da6e "arm: arch_timer: move core to drivers/clocksource"
moved a lot of code out of arch_timer.c, but ended up deleting
too much, which broke some configurations.
Obviously, include linux/errno.h is required to return error
values.
Without this patch, building allmodconfig results in:
arch/arm/kernel/arch_timer.c: In function 'arch_timer_sched_clock_init':
arch/arm/kernel/arch_timer.c:55:11: error: 'ENXIO' undeclared (first use in this function)
arch/arm/kernel/arch_timer.c:55:11: note: each undeclared identifier is reported only once for each function it appears in
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
/*
|
|
* linux/arch/arm/kernel/arch_timer.c
|
|
*
|
|
* Copyright (C) 2011 ARM Ltd.
|
|
* All Rights Reserved
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/init.h>
|
|
#include <linux/types.h>
|
|
#include <linux/errno.h>
|
|
|
|
#include <asm/delay.h>
|
|
#include <asm/sched_clock.h>
|
|
|
|
#include <clocksource/arm_arch_timer.h>
|
|
|
|
static unsigned long arch_timer_read_counter_long(void)
|
|
{
|
|
return arch_timer_read_counter();
|
|
}
|
|
|
|
static u32 arch_timer_read_counter_u32(void)
|
|
{
|
|
return arch_timer_read_counter();
|
|
}
|
|
|
|
static struct delay_timer arch_delay_timer;
|
|
|
|
static void __init arch_timer_delay_timer_register(void)
|
|
{
|
|
/* Use the architected timer for the delay loop. */
|
|
arch_delay_timer.read_current_timer = arch_timer_read_counter_long;
|
|
arch_delay_timer.freq = arch_timer_get_rate();
|
|
register_current_timer_delay(&arch_delay_timer);
|
|
}
|
|
|
|
int __init arch_timer_of_register(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = arch_timer_init();
|
|
if (ret)
|
|
return ret;
|
|
|
|
arch_timer_delay_timer_register();
|
|
|
|
return 0;
|
|
}
|
|
|
|
int __init arch_timer_sched_clock_init(void)
|
|
{
|
|
if (arch_timer_get_rate() == 0)
|
|
return -ENXIO;
|
|
|
|
setup_sched_clock(arch_timer_read_counter_u32,
|
|
32, arch_timer_get_rate());
|
|
return 0;
|
|
}
|