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-rw-r--r--arch/powerpc/include/asm/eeh.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index c13119a5e69b..9d0e1694a94d 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -88,6 +88,17 @@ struct eeh_pe {
struct list_head child_list; /* List of PEs below this PE */
struct list_head child; /* Memb. child_list/eeh_phb_pe */
struct list_head edevs; /* List of eeh_dev in this PE */
+
+ /*
+ * Saved stack trace. When we find a PE freeze in eeh_dev_check_failure
+ * the stack trace is saved here so we can print it in the recovery
+ * thread if it turns out to due to a real problem rather than
+ * a hot-remove.
+ *
+ * A max of 64 entries might be overkill, but it also might not be.
+ */
+ unsigned long stack_trace[64];
+ int trace_entries;
};
#define eeh_pe_for_each_dev(pe, edev, tmp) \