mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 00:59:39 +07:00
31e43ad3b7
The unwind code sets the sp member of struct stackframe to 'frame pointer + 0x10' unconditionally, without regard for whether doing so produces a legal value. So let's simply remove it now that we have stopped using it anyway. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: James Morse <james.morse@arm.com> Cc: Will Deacon <will.deacon@arm.com>
83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/*
|
|
* Based on arch/arm/kernel/time.c
|
|
*
|
|
* Copyright (C) 1991, 1992, 1995 Linus Torvalds
|
|
* Modifications for ARM (C) 1994-2001 Russell King
|
|
* Copyright (C) 2012 ARM Ltd.
|
|
*
|
|
* 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.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/clockchips.h>
|
|
#include <linux/export.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/time.h>
|
|
#include <linux/init.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/timex.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/profile.h>
|
|
#include <linux/syscore_ops.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/clocksource.h>
|
|
#include <linux/clk-provider.h>
|
|
#include <linux/acpi.h>
|
|
|
|
#include <clocksource/arm_arch_timer.h>
|
|
|
|
#include <asm/thread_info.h>
|
|
#include <asm/stacktrace.h>
|
|
|
|
unsigned long profile_pc(struct pt_regs *regs)
|
|
{
|
|
struct stackframe frame;
|
|
|
|
if (!in_lock_functions(regs->pc))
|
|
return regs->pc;
|
|
|
|
frame.fp = regs->regs[29];
|
|
frame.pc = regs->pc;
|
|
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
|
|
frame.graph = -1; /* no task info */
|
|
#endif
|
|
do {
|
|
int ret = unwind_frame(NULL, &frame);
|
|
if (ret < 0)
|
|
return 0;
|
|
} while (in_lock_functions(frame.pc));
|
|
|
|
return frame.pc;
|
|
}
|
|
EXPORT_SYMBOL(profile_pc);
|
|
|
|
void __init time_init(void)
|
|
{
|
|
u32 arch_timer_rate;
|
|
|
|
of_clk_init(NULL);
|
|
timer_probe();
|
|
|
|
tick_setup_hrtimer_broadcast();
|
|
|
|
arch_timer_rate = arch_timer_get_rate();
|
|
if (!arch_timer_rate)
|
|
panic("Unable to initialise architected timer.\n");
|
|
|
|
/* Calibrate the delay loop directly */
|
|
lpj_fine = arch_timer_rate / HZ;
|
|
}
|