#include <linux/export.h>
#include <linux/kallsyms.h>
#include <linux/stacktrace.h>
+#include <linux/interrupt.h>
/**
* stack_trace_print - Print the entries in the stack trace
unsigned int len;
};
-static bool stack_trace_consume_entry(void *cookie, unsigned long addr,
- bool reliable)
+static bool stack_trace_consume_entry(void *cookie, unsigned long addr)
{
struct stacktrace_cookie *c = cookie;
return c->len < c->size;
}
-static bool stack_trace_consume_entry_nosched(void *cookie, unsigned long addr,
- bool reliable)
+static bool stack_trace_consume_entry_nosched(void *cookie, unsigned long addr)
{
if (in_sched_functions(addr))
return true;
- return stack_trace_consume_entry(cookie, addr, reliable);
+ return stack_trace_consume_entry(cookie, addr);
}
/**
#endif /* CONFIG_USER_STACKTRACE_SUPPORT */
#endif /* !CONFIG_ARCH_STACKWALK */
+
+static inline bool in_irqentry_text(unsigned long ptr)
+{
+ return (ptr >= (unsigned long)&__irqentry_text_start &&
+ ptr < (unsigned long)&__irqentry_text_end) ||
+ (ptr >= (unsigned long)&__softirqentry_text_start &&
+ ptr < (unsigned long)&__softirqentry_text_end);
+}
+
+/**
+ * filter_irq_stacks - Find first IRQ stack entry in trace
+ * @entries: Pointer to stack trace array
+ * @nr_entries: Number of entries in the storage array
+ *
+ * Return: Number of trace entries until IRQ stack starts.
+ */
+unsigned int filter_irq_stacks(unsigned long *entries, unsigned int nr_entries)
+{
+ unsigned int i;
+
+ for (i = 0; i < nr_entries; i++) {
+ if (in_irqentry_text(entries[i])) {
+ /* Include the irqentry function into the stack. */
+ return i + 1;
+ }
+ }
+ return nr_entries;
+}
+EXPORT_SYMBOL_GPL(filter_irq_stacks);