Introduce xnarch_fault_um() to test if a fault happened in user-mode and
applies the new feature to report core and driver crashes more verbosely.
---
include/asm-generic/system.h | 5 +++++
include/asm-sim/system.h | 1 +
include/asm-uvm/system.h | 1 +
ksrc/nucleus/pod.c | 11 ++++++++++-
4 files changed, 17 insertions(+), 1 deletion(-)
Index: xenomai/include/asm-generic/system.h
===================================================================
--- xenomai.orig/include/asm-generic/system.h
+++ xenomai/include/asm-generic/system.h
@@ -35,6 +35,7 @@
#include <asm/uaccess.h>
#include <asm/param.h>
#include <asm/mmu_context.h>
+#include <asm/ptrace.h>
#include <linux/config.h>
#include <asm/xenomai/hal.h>
#include <asm/xenomai/atomic.h>
@@ -52,6 +53,10 @@
#define xnarch_trace_panic_freeze() rthal_trace_panic_freeze()
#define xnarch_trace_panic_dump() rthal_trace_panic_dump()
+#ifndef xnarch_fault_um
+#define xnarch_fault_um(fi) user_mode(fi->regs)
+#endif
+
#define module_param_value(parm) (parm)
typedef unsigned long spl_t;
Index: xenomai/include/asm-sim/system.h
===================================================================
--- xenomai.orig/include/asm-sim/system.h
+++ xenomai/include/asm-sim/system.h
@@ -56,6 +56,7 @@ typedef void *xnarch_fltinfo_t; /* Unuse
#define xnarch_fault_code(fi) 0
#define xnarch_fault_pc(fi) 0L
#define xnarch_fault_notify(fi) 1
+#define xnarch_fault_um(fi) 0
typedef int spl_t;
Index: xenomai/include/asm-uvm/system.h
===================================================================
--- xenomai.orig/include/asm-uvm/system.h
+++ xenomai/include/asm-uvm/system.h
@@ -192,6 +192,7 @@ typedef void *xnarch_fltinfo_t; /* Unuse
#define xnarch_fault_code(fi) 0
#define xnarch_fault_pc(fi) 0L
#define xnarch_fault_notify(fi) 1
+#define xnarch_fault_um(fi) 0
typedef struct xnarch_heapcb {
Index: xenomai/ksrc/nucleus/pod.c
===================================================================
--- xenomai.orig/ksrc/nucleus/pod.c
+++ xenomai/ksrc/nucleus/pod.c
@@ -194,7 +194,16 @@ static int xnpod_fault_handler(xnarch_fl
if (xnpod_shadow_p()) {
#ifdef CONFIG_XENO_OPT_DEBUG
- if (xnarch_fault_notify(fltinfo)) /* Don't report debug
traps */
+ if (!xnarch_fault_um(fltinfo)) {
+ xnarch_trace_panic_freeze();
+ xnprintf
+ ("Switching %s to secondary mode after exception
#%u in "
+ "kernel-space at 0x%lx (pid %d)\n", thread->name,
+ xnarch_fault_trap(fltinfo),
+ xnarch_fault_pc(fltinfo),
+ xnthread_user_pid(thread));
+ xnarch_trace_panic_dump();
+ } else if (xnarch_fault_notify(fltinfo)) /* Don't report debug
traps */
xnprintf
("Switching %s to secondary mode after exception
#%u from "
"user-space at 0x%lx (pid %d)\n", thread->name,
--
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