powerpc/eeh: Fix build with STACKTRACE=n
The build breaks when STACKTRACE=n, eg. skiroot_defconfig:
arch/powerpc/kernel/eeh_event.c:124:23: error: implicit declaration of function 'stack_trace_save'
Fix it with some ifdefs for now.
Fixes: 25baf3d81614 ("powerpc/eeh: Defer printing stack trace")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index 9d0e169..6f9b2a1 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -89,6 +89,7 @@ struct eeh_pe {
struct list_head child; /* Memb. child_list/eeh_phb_pe */
struct list_head edevs; /* List of eeh_dev in this PE */
+#ifdef CONFIG_STACKTRACE
/*
* 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
@@ -99,6 +100,7 @@ struct eeh_pe {
*/
unsigned long stack_trace[64];
int trace_entries;
+#endif /* CONFIG_STACKTRACE */
};
#define eeh_pe_for_each_dev(pe, edev, tmp) \
