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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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e5701b74cc
A new hypervisor service was added some time ago (MDE 4.2.1 or later, or MDE 4.3 or later) that allows cores to request NMIs to be delivered to other cores. Use this facility to deliver a request that causes a backtrace to be generated on each core, and hook it into the magic SysRq functionality. Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/*
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* Copyright 2010 Tilera Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*/
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#ifndef _ASM_TILE_TRAPS_H
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#define _ASM_TILE_TRAPS_H
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#ifndef __ASSEMBLY__
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#include <arch/chip.h>
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/* mm/fault.c */
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void do_page_fault(struct pt_regs *, int fault_num,
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unsigned long address, unsigned long write);
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#if CHIP_HAS_TILE_DMA()
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void do_async_page_fault(struct pt_regs *);
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#endif
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#ifndef __tilegx__
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/*
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* We return this structure in registers to avoid having to write
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* additional save/restore code in the intvec.S caller.
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*/
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struct intvec_state {
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void *handler;
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unsigned long vecnum;
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unsigned long fault_num;
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unsigned long info;
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unsigned long retval;
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};
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struct intvec_state do_page_fault_ics(struct pt_regs *regs, int fault_num,
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unsigned long address,
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unsigned long info);
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#endif
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/* kernel/traps.c */
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void do_trap(struct pt_regs *, int fault_num, unsigned long reason);
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void kernel_double_fault(int dummy, ulong pc, ulong lr, ulong sp, ulong r52);
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/* kernel/time.c */
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void do_timer_interrupt(struct pt_regs *, int fault_num);
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/* kernel/messaging.c */
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void hv_message_intr(struct pt_regs *, int intnum);
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#define TILE_NMI_DUMP_STACK 1 /* Dump stack for sysrq+'l' */
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/* kernel/process.c */
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void do_nmi_dump_stack(struct pt_regs *regs);
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/* kernel/traps.c */
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void do_nmi(struct pt_regs *, int fault_num, unsigned long reason);
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/* kernel/irq.c */
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void tile_dev_intr(struct pt_regs *, int intnum);
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#ifdef CONFIG_HARDWALL
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/* kernel/hardwall.c */
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void do_hardwall_trap(struct pt_regs *, int fault_num);
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#endif
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/* kernel/ptrace.c */
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void do_breakpoint(struct pt_regs *, int fault_num);
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#ifdef __tilegx__
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/* kernel/single_step.c */
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void gx_singlestep_handle(struct pt_regs *, int fault_num);
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/* kernel/intvec_64.S */
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void fill_ra_stack(void);
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/* Handle unalign data fixup. */
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extern void do_unaligned(struct pt_regs *regs, int vecnum);
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#endif
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#endif /* __ASSEMBLY__ */
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#ifdef __tilegx__
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/* 128 byte JIT per unalign fixup. */
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#define UNALIGN_JIT_SHIFT 7
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#endif
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#endif /* _ASM_TILE_TRAPS_H */
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