[PATCH v3 2/7] powerpc: Add PVR & CPU name to dump stack arch description
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2019-02-07 12:46:57
Also in:
linux-arch, lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
As soon as we've done some basic setup, add the PVR and CPU name to the dump stack arch description, which is printed in case of an oops. eg: Hardware name: ... POWER8E (raw) pvr:0x4b0201 Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> --- arch/powerpc/kernel/cputable.c | 1 + arch/powerpc/kernel/prom.c | 4 ++++ 2 files changed, 5 insertions(+)
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 1eab54bc6ee9..8b4520a84612 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c@@ -16,6 +16,7 @@ #include <linux/init.h> #include <linux/export.h> #include <linux/jump_label.h> +#include <linux/printk.h> #include <asm/oprofile_impl.h> #include <asm/cputable.h>
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 4181ec715f88..ea2c3498067d 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c@@ -761,6 +761,10 @@ void __init early_init_devtree(void *params) dt_cpu_ftrs_scan(); + /* We can now set the CPU name & PVR for the oops output */ + dump_stack_add_arch_desc("%s pvr:0x%04lx", cur_cpu_spec->cpu_name, + mfspr(SPRN_PVR)); + /* Retrieve CPU related informations from the flat tree * (altivec support, boot CPU ID, ...) */
--
2.20.1