From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH 0/2] x86: Fix perf deadlock caused by dumpstack cleanup
Date: Wed, 02 Apr 2014 13:26:39 -0400 [thread overview]
Message-ID: <20140402172639.994587272@goodmis.org> (raw)
Linus,
Here are two patches that fix the deadlock that you discovered.
The first patch is the real culprit, but as I was looking at the code
I realized that the irq stack part was a bit off too. That part didn't
cause the lock up, but needs to be fixed regardless.
Note, I'm hoping to use these clean ups to make x86_64 and i386 code
a bit closer to each other, so I hope the original change does not
get reverted.
-- Steve
Steven Rostedt (Red Hat) (2):
x86: Fix dumpstack_64 to keep state of "used" variable in loop
x86: Fix dumpstack_64 irq stack handling
----
arch/x86/kernel/dumpstack_64.c | 25 +++++++++++++------------
1 file changed, 13 insertions(+), 12 deletions(-)
next reply other threads:[~2014-04-02 17:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-02 17:26 Steven Rostedt [this message]
2014-04-02 17:26 ` [PATCH 1/2] x86: Fix dumpstack_64 to keep state of "used" variable in loop Steven Rostedt
2014-04-02 17:26 ` [PATCH 2/2] x86: Fix dumpstack_64 irq stack handling Steven Rostedt
2014-04-02 18:46 ` [PATCH 0/2] x86: Fix perf deadlock caused by dumpstack cleanup Linus Torvalds
2014-04-02 19:37 ` Steven Rostedt
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