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40 lines
812 B
40 lines
812 B
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* arch/ia64/kernel/stacktrace.c |
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* |
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* Stack trace management functions |
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* |
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*/ |
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#include <linux/sched.h> |
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#include <linux/stacktrace.h> |
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#include <linux/module.h> |
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static void |
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ia64_do_save_stack(struct unw_frame_info *info, void *arg) |
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{ |
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struct stack_trace *trace = arg; |
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unsigned long ip; |
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int skip = trace->skip; |
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trace->nr_entries = 0; |
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do { |
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unw_get_ip(info, &ip); |
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if (ip == 0) |
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break; |
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if (skip == 0) { |
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trace->entries[trace->nr_entries++] = ip; |
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if (trace->nr_entries == trace->max_entries) |
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break; |
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} else |
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skip--; |
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} while (unw_unwind(info) >= 0); |
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} |
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/* |
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* Save stack-backtrace addresses into a stack_trace buffer. |
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*/ |
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void save_stack_trace(struct stack_trace *trace) |
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{ |
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unw_init_running(ia64_do_save_stack, trace); |
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} |
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EXPORT_SYMBOL(save_stack_trace);
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