Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755820Ab2HWCRk (ORCPT ); Wed, 22 Aug 2012 22:17:40 -0400 Received: from mail1.windriver.com ([147.11.146.13]:42138 "EHLO mail1.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753875Ab2HWCRi (ORCPT ); Wed, 22 Aug 2012 22:17:38 -0400 From: Tiejun Chen To: CC: , , Subject: [v2][PATCH 2/3] powerpc: Bail out of KGDB when we've been triggered Date: Thu, 23 Aug 2012 10:10:19 +0800 Message-ID: <1345687820-5248-2-git-send-email-tiejun.chen@windriver.com> X-Mailer: git-send-email 1.5.6 In-Reply-To: <1345687820-5248-1-git-send-email-tiejun.chen@windriver.com> References: <1345687820-5248-1-git-send-email-tiejun.chen@windriver.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1365 Lines: 44 We need to skip a breakpoint exception when it occurs after a breakpoint has already been removed. Signed-off-by: Tiejun Chen --- v2: simply kgdb_skipexception() return path. arch/powerpc/kernel/kgdb.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c index bbabc5a..05adb69 100644 --- a/arch/powerpc/kernel/kgdb.c +++ b/arch/powerpc/kernel/kgdb.c @@ -101,6 +101,21 @@ static int computeSignal(unsigned int tt) return SIGHUP; /* default for things we don't know about */ } +/** + * + * kgdb_skipexception - Bail out of KGDB when we've been triggered. + * @exception: Exception vector number + * @regs: Current &struct pt_regs. + * + * On some architectures we need to skip a breakpoint exception when + * it occurs after a breakpoint has been removed. + * + */ +int kgdb_skipexception(int exception, struct pt_regs *regs) +{ + return kgdb_isremovedbreak(regs->nip); +} + static int kgdb_call_nmi_hook(struct pt_regs *regs) { kgdb_nmicallback(raw_smp_processor_id(), regs); -- 1.5.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/