72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_STACKTRACE_H
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#define __LINUX_STACKTRACE_H
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#include <linux/types.h>
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#include <asm/errno.h>
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struct task_struct;
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struct pt_regs;
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#ifdef CONFIG_STACKTRACE
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void stack_trace_print(unsigned long *trace, unsigned int nr_entries,
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int spaces);
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int stack_trace_snprint(char *buf, size_t size, unsigned long *entries,
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unsigned int nr_entries, int spaces);
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unsigned int stack_trace_save(unsigned long *store, unsigned int size,
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unsigned int skipnr);
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unsigned int stack_trace_save_tsk(struct task_struct *task,
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unsigned long *store, unsigned int size,
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unsigned int skipnr);
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unsigned int stack_trace_save_regs(struct pt_regs *regs, unsigned long *store,
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unsigned int size, unsigned int skipnr);
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unsigned int stack_trace_save_user(unsigned long *store, unsigned int size);
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/* Internal interfaces. Do not use in generic code */
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struct stack_trace {
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unsigned int nr_entries, max_entries;
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unsigned long *entries;
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int skip; /* input argument: How many entries to skip */
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};
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extern void save_stack_trace(struct stack_trace *trace);
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extern void save_stack_trace_regs(struct pt_regs *regs,
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struct stack_trace *trace);
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extern void save_stack_trace_tsk(struct task_struct *tsk,
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struct stack_trace *trace);
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extern int save_stack_trace_tsk_reliable(struct task_struct *tsk,
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struct stack_trace *trace);
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extern void print_stack_trace(struct stack_trace *trace, int spaces);
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extern int snprint_stack_trace(char *buf, size_t size,
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struct stack_trace *trace, int spaces);
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#ifdef CONFIG_USER_STACKTRACE_SUPPORT
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extern void save_stack_trace_user(struct stack_trace *trace);
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#else
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# define save_stack_trace_user(trace) do { } while (0)
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#endif
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#else /* !CONFIG_STACKTRACE */
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# define save_stack_trace(trace) do { } while (0)
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# define save_stack_trace_tsk(tsk, trace) do { } while (0)
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# define save_stack_trace_user(trace) do { } while (0)
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# define print_stack_trace(trace, spaces) do { } while (0)
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# define snprint_stack_trace(buf, size, trace, spaces) do { } while (0)
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# define save_stack_trace_tsk_reliable(tsk, trace) ({ -ENOSYS; })
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#endif /* CONFIG_STACKTRACE */
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#if defined(CONFIG_STACKTRACE) && defined(CONFIG_HAVE_RELIABLE_STACKTRACE)
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int stack_trace_save_tsk_reliable(struct task_struct *tsk, unsigned long *store,
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unsigned int size);
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#else
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static inline int stack_trace_save_tsk_reliable(struct task_struct *tsk,
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unsigned long *store,
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unsigned int size)
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{
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return -ENOSYS;
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}
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#endif
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#endif /* __LINUX_STACKTRACE_H */
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