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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /arch/microblaze/kernel/traps.c | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/microblaze/kernel/traps.c')
-rw-r--r-- | arch/microblaze/kernel/traps.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/traps.c b/arch/microblaze/kernel/traps.c new file mode 100644 index 000000000..94b6fe931 --- /dev/null +++ b/arch/microblaze/kernel/traps.c @@ -0,0 +1,78 @@ +/* + * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu> + * Copyright (C) 2007-2009 PetaLogix + * Copyright (C) 2006 Atmark Techno, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#include <linux/export.h> +#include <linux/kernel.h> +#include <linux/kallsyms.h> +#include <linux/sched.h> +#include <linux/sched/debug.h> +#include <linux/debug_locks.h> + +#include <asm/exceptions.h> +#include <asm/unwind.h> + +void trap_init(void) +{ + __enable_hw_exceptions(); +} + +static unsigned long kstack_depth_to_print; /* 0 == entire stack */ + +static int __init kstack_setup(char *s) +{ + return !kstrtoul(s, 0, &kstack_depth_to_print); +} +__setup("kstack=", kstack_setup); + +void show_stack(struct task_struct *task, unsigned long *sp, const char *loglvl) +{ + unsigned long words_to_show; + u32 fp = (u32) sp; + + if (fp == 0) { + if (task) { + fp = ((struct thread_info *) + (task->stack))->cpu_context.r1; + } else { + /* Pick up caller of dump_stack() */ + fp = (u32)&sp - 8; + } + } + + words_to_show = (THREAD_SIZE - (fp & (THREAD_SIZE - 1))) >> 2; + if (kstack_depth_to_print && (words_to_show > kstack_depth_to_print)) + words_to_show = kstack_depth_to_print; + + printk("%sKernel Stack:\n", loglvl); + + /* + * Make the first line an 'odd' size if necessary to get + * remaining lines to start at an address multiple of 0x10 + */ + if (fp & 0xF) { + unsigned long line1_words = (0x10 - (fp & 0xF)) >> 2; + if (line1_words < words_to_show) { + print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, 32, + 4, (void *)fp, line1_words << 2, 0); + fp += line1_words << 2; + words_to_show -= line1_words; + } + } + print_hex_dump(loglvl, "", DUMP_PREFIX_ADDRESS, 32, 4, (void *)fp, + words_to_show << 2, 0); + printk("%s\n\nCall Trace:\n", loglvl); + microblaze_unwind(task, NULL, loglvl); + printk("%s\n", loglvl); + + if (!task) + task = current; + + debug_show_held_locks(task); +} |