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Imran Khan
0f68d45ef4
To print stack entries into a buffer, users of stackdepot, first get a list of stack entries using stack_depot_fetch and then print this list into a buffer using stack_trace_snprint. Provide a helper in stackdepot for this purpose. Also change above mentioned users to use this helper. [[email protected]: fix build error] Link: https://lkml.kernel.org/r/[email protected] [[email protected]: export stack_depot_snprint() to modules] Link: https://lkml.kernel.org/r/[email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Imran Khan <[email protected]> Suggested-by: Vlastimil Babka <[email protected]> Acked-by: Vlastimil Babka <[email protected]> Acked-by: Jani Nikula <[email protected]> [i915] Cc: Alexander Potapenko <[email protected]> Cc: Andrey Konovalov <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: David Airlie <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: Thomas Zimmermann <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
43 lines
997 B
C
43 lines
997 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* A generic stack depot implementation
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*
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* Author: Alexander Potapenko <[email protected]>
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* Copyright (C) 2016 Google, Inc.
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*
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* Based on code by Dmitry Chernenkov.
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*/
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#ifndef _LINUX_STACKDEPOT_H
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#define _LINUX_STACKDEPOT_H
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#include <linux/gfp.h>
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typedef u32 depot_stack_handle_t;
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depot_stack_handle_t __stack_depot_save(unsigned long *entries,
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unsigned int nr_entries,
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gfp_t gfp_flags, bool can_alloc);
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depot_stack_handle_t stack_depot_save(unsigned long *entries,
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unsigned int nr_entries, gfp_t gfp_flags);
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unsigned int stack_depot_fetch(depot_stack_handle_t handle,
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unsigned long **entries);
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int stack_depot_snprint(depot_stack_handle_t handle, char *buf, size_t size,
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int spaces);
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void stack_depot_print(depot_stack_handle_t stack);
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#ifdef CONFIG_STACKDEPOT
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int stack_depot_init(void);
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#else
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static inline int stack_depot_init(void)
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{
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return 0;
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}
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#endif /* CONFIG_STACKDEPOT */
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#endif
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