From: Tiejun Chen <tiejun.chen@windriver.com>
To: <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
jason.wessel@windriver.com
Subject: [PATCH 1/3] kgdb,ppc: do not set kgdb_single_step on ppc
Date: Wed, 22 Aug 2012 18:43:10 +0800 [thread overview]
Message-ID: <1345632192-19810-1-git-send-email-tiejun.chen@windriver.com> (raw)
The kgdb_single_step flag has the possibility to indefinitely
hang the system on an SMP system.
The x86 arch have the same problem, and that problem was fixed by
commit 8097551d9ab9b9e3630(kgdb,x86: do not set kgdb_single_step
on x86). This patch does the same behaviors as x86's patch.
Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
---
arch/powerpc/kernel/kgdb.c | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index 782bd0a..bbabc5a 100644
--- a/arch/powerpc/kernel/kgdb.c
+++ b/arch/powerpc/kernel/kgdb.c
@@ -410,7 +410,6 @@ int kgdb_arch_handle_exception(int vector, int signo, int err_code,
#else
linux_regs->msr |= MSR_SE;
#endif
- kgdb_single_step = 1;
atomic_set(&kgdb_cpu_doing_single_step,
raw_smp_processor_id());
}
--
1.5.6
next reply other threads:[~2012-08-22 10:50 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-22 10:43 Tiejun Chen [this message]
2012-08-22 10:43 ` [PATCH 2/3] powerpc: Bail out of KGDB when we've been triggered Tiejun Chen
2012-08-22 15:07 ` Tabi Timur-B04825
2012-08-23 1:54 ` tiejun.chen
2012-08-22 10:43 ` [PATCH 3/3] powerpc/kgdb: restore current_thread_info properly Tiejun Chen
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