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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /arch/parisc/kernel/stacktrace.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | arch/parisc/kernel/stacktrace.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/parisc/kernel/stacktrace.c b/arch/parisc/kernel/stacktrace.c new file mode 100644 index 0000000000..023834ef58 --- /dev/null +++ b/arch/parisc/kernel/stacktrace.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Stack trace management functions + * + * Copyright (C) 2009-2021 Helge Deller <deller@gmx.de> + * based on arch/x86/kernel/stacktrace.c by Ingo Molnar <mingo@redhat.com> + * and parisc unwind functions by Randolph Chung <tausq@debian.org> + * + * TODO: Userspace stacktrace (CONFIG_USER_STACKTRACE_SUPPORT) + */ +#include <linux/kernel.h> +#include <linux/stacktrace.h> + +#include <asm/unwind.h> + +static void notrace walk_stackframe(struct task_struct *task, + struct pt_regs *regs, bool (*fn)(void *, unsigned long), void *cookie) +{ + struct unwind_frame_info info; + + unwind_frame_init_task(&info, task, NULL); + while (1) { + if (unwind_once(&info) < 0 || info.ip == 0) + break; + + if (__kernel_text_address(info.ip)) + if (!fn(cookie, info.ip)) + break; + } +} + +void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie, + struct task_struct *task, struct pt_regs *regs) +{ + walk_stackframe(task, regs, consume_entry, cookie); +} + +int arch_stack_walk_reliable(stack_trace_consume_fn consume_entry, void *cookie, + struct task_struct *task) +{ + walk_stackframe(task, NULL, consume_entry, cookie); + return 1; +} |