de985dd501
Currently, the log-level of show_stack() depends on a platform realization. It creates situations where the headers are printed with lower log level or higher than the stacktrace (depending on a platform or user). Furthermore, it forces the logic decision from user to an architecture side. In result, some users as sysrq/kdb/etc are doing tricks with temporary rising console_loglevel while printing their messages. And in result it not only may print unwanted messages from other CPUs, but also omit printing at all in the unlucky case where the printk() was deferred. Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier approach than introducing more printk buffers. Also, it will consolidate printings with headers. Add log level parameter to c_backtrace() as a preparation for introducing show_stack_loglvl() [1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#u Signed-off-by: Dmitry Safonov <dima@arista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Link: http://lkml.kernel.org/r/20200418201944.482088-39-dima@arista.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
37 lines
877 B
C
37 lines
877 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* linux/arch/unicore32/kernel/setup.h
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*
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* Code specific to PKUnity SoC and UniCore ISA
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*
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* Copyright (C) 2001-2010 GUAN Xue-tao
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*/
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#ifndef __UNICORE_KERNEL_SETUP_H__
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#define __UNICORE_KERNEL_SETUP_H__
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#include <asm/hwdef-copro.h>
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extern void paging_init(void);
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extern void puv3_core_init(void);
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extern void cpu_init(void);
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extern void puv3_ps2_init(void);
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extern void pci_puv3_preinit(void);
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extern void __init puv3_init_gpio(void);
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extern void setup_mm_for_reboot(void);
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extern char __stubs_start[], __stubs_end[];
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extern char __vectors_start[], __vectors_end[];
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extern void kernel_thread_helper(void);
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extern void __init early_signal_init(void);
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extern asmlinkage void __backtrace(void);
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extern asmlinkage void c_backtrace(unsigned long fp, const char *loglvl);
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extern void __show_regs(struct pt_regs *);
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#endif
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