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| 2 | |
| 3 | * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
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| 4 | * Copyright (C) 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
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| 5 |
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| 6 |
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| 7 | #ifndef __ASM_STACKTRACE_H
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| 8 | #define __ASM_STACKTRACE_H
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| 9 |
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| 10 | #include <linux/sched.h>
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| 11 |
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| 12 | |
| 13 | * arc_unwind_core - Unwind the kernel mode stack for an execution context
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| 14 | * @tsk: NULL for current task, specific task otherwise
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| 15 | * @regs: pt_regs used to seed the unwinder {SP, FP, BLINK, PC}
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| 16 | * If NULL, use pt_regs of @tsk (if !NULL) otherwise
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| 17 | * use the current values of {SP, FP, BLINK, PC}
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| 18 | * @consumer_fn: Callback invoked for each frame unwound
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| 19 | * Returns 0 to continue unwinding, -1 to stop
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| 20 | * @arg: Arg to callback
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| 21 | *
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| 22 | * Returns the address of first function in stack
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| 23 | *
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| 24 | * Semantics:
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| 25 | * - synchronous unwinding (e.g. dump_stack): @tsk NULL, @regs NULL
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| 26 | * - Asynchronous unwinding of sleeping task: @tsk !NULL, @regs NULL
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| 27 | * - Asynchronous unwinding of intr/excp etc: @tsk !NULL, @regs !NULL
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| 28 |
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| 29 | notrace noinline unsigned int arc_unwind_core(
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| 30 | struct task_struct *tsk, struct pt_regs *regs,
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| 31 | int (*consumer_fn) (unsigned int, void *),
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| 32 | void *arg);
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| 33 |
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| 34 | #endif
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