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authorAnton Vorontsov <anton.vorontsov@linaro.org>2012-07-30 04:58:10 -0700
committerJason Wessel <jason.wessel@windriver.com>2012-07-31 08:16:43 -0500
commitb10d22d6e8f76b9e94871aebe0fc62aab2748200 (patch)
treefd2452bd709147091ac03f7d458d974e1f8d5ab4 /kernel/debug
parent07cd27bbd4d07af6c3e24ae479316a69e7935e1e (diff)
downloadlinux-b10d22d6e8f76b9e94871aebe0fc62aab2748200.tar.bz2
kernel/debug: Make use of KGDB_REASON_NMI
Currently kernel never set KGDB_REASON_NMI. We do now, when we enter KGDB/KDB from an NMI. This is not to be confused with kgdb_nmicallback(), NMI callback is an entry for the slave CPUs during CPUs roundup, but REASON_NMI is the entry for the master CPU. Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Diffstat (limited to 'kernel/debug')
-rw-r--r--kernel/debug/kdb/kdb_debugger.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/debug/kdb/kdb_debugger.c b/kernel/debug/kdb/kdb_debugger.c
index 8b68ce78ff17..be7b33b73d30 100644
--- a/kernel/debug/kdb/kdb_debugger.c
+++ b/kernel/debug/kdb/kdb_debugger.c
@@ -12,6 +12,7 @@
#include <linux/kdb.h>
#include <linux/kdebug.h>
#include <linux/export.h>
+#include <linux/hardirq.h>
#include "kdb_private.h"
#include "../debug_core.h"
@@ -52,6 +53,9 @@ int kdb_stub(struct kgdb_state *ks)
if (atomic_read(&kgdb_setting_breakpoint))
reason = KDB_REASON_KEYBOARD;
+ if (in_nmi())
+ reason = KDB_REASON_NMI;
+
for (i = 0, bp = kdb_breakpoints; i < KDB_MAXBPT; i++, bp++) {
if ((bp->bp_enabled) && (bp->bp_addr == addr)) {
reason = KDB_REASON_BREAK;