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arch: Make ARCH_STACKWALK independent of STACKTRACE

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Make arch_stack_walk() available for ARCH_STACKWALK architectures
without it being entangled in STACKTRACE.

Link: https://lore.kernel.org/lkml/20211022152104.356586621@infradead.org/
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
[Mark: rebase, drop unnecessary arm change]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Link: https://lore.kernel.org/r/20211129142849.3056714-2-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Peter Zijlstra
2021-11-29 14:28:41 +00:00
committed by Catalin Marinas
parent d58071a8a7
commit 1614b2b11f
6 changed files with 21 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
include/linux/stacktrace.h
View File

@@ -8,22 +8,6 @@
struct task_struct;
struct pt_regs;
#ifdef CONFIG_STACKTRACE
void stack_trace_print(const unsigned long *trace, unsigned int nr_entries,
int spaces);
int stack_trace_snprint(char *buf, size_t size, const unsigned long *entries,
unsigned int nr_entries, int spaces);
unsigned int stack_trace_save(unsigned long *store, unsigned int size,
unsigned int skipnr);
unsigned int stack_trace_save_tsk(struct task_struct *task,
unsigned long *store, unsigned int size,
unsigned int skipnr);
unsigned int stack_trace_save_regs(struct pt_regs *regs, unsigned long *store,
unsigned int size, unsigned int skipnr);
unsigned int stack_trace_save_user(unsigned long *store, unsigned int size);
unsigned int filter_irq_stacks(unsigned long *entries, unsigned int nr_entries);
/* Internal interfaces. Do not use in generic code */
#ifdef CONFIG_ARCH_STACKWALK
/**
@@ -76,8 +60,25 @@ int arch_stack_walk_reliable(stack_trace_consume_fn consume_entry, void *cookie,
void arch_stack_walk_user(stack_trace_consume_fn consume_entry, void *cookie,
const struct pt_regs *regs);
#endif /* CONFIG_ARCH_STACKWALK */
#else /* CONFIG_ARCH_STACKWALK */
#ifdef CONFIG_STACKTRACE
void stack_trace_print(const unsigned long *trace, unsigned int nr_entries,
int spaces);
int stack_trace_snprint(char *buf, size_t size, const unsigned long *entries,
unsigned int nr_entries, int spaces);
unsigned int stack_trace_save(unsigned long *store, unsigned int size,
unsigned int skipnr);
unsigned int stack_trace_save_tsk(struct task_struct *task,
unsigned long *store, unsigned int size,
unsigned int skipnr);
unsigned int stack_trace_save_regs(struct pt_regs *regs, unsigned long *store,
unsigned int size, unsigned int skipnr);
unsigned int stack_trace_save_user(unsigned long *store, unsigned int size);
unsigned int filter_irq_stacks(unsigned long *entries, unsigned int nr_entries);
#ifndef CONFIG_ARCH_STACKWALK
/* Internal interfaces. Do not use in generic code */
struct stack_trace {
unsigned int nr_entries, max_entries;
unsigned long *entries;