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Commit b10d22d6 authored by Anton Vorontsov's avatar Anton Vorontsov Committed by Jason Wessel
Browse files

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: default avatarAnton Vorontsov <anton.vorontsov@linaro.org>
Signed-off-by: default avatarJason Wessel <jason.wessel@windriver.com>
parent 07cd27bb

kernel/debug/kdb/kdb_debugger.c

+4 −0
Original line number Diff line number Diff line
@@ -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;