From: Ingo Molnar <mingo@elte.hu>
To: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Ken Chen <kenchen@google.com>,
linux-kernel@vger.kernel.org,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [patch] add /proc/pid/stack to dump task's stack trace
Date: Fri, 7 Nov 2008 10:03:04 +0100 [thread overview]
Message-ID: <20081107090304.GA30540@elte.hu> (raw)
In-Reply-To: <20081107085352.GA27245@elte.hu>
btw., the feature works beautifully:
task sleeping/blocked:
# cat /proc/1/stack
[<ffffffff802bfe75>] do_select+0x51a/0x582
[<ffffffff802c0059>] core_sys_select+0x17c/0x218
[<ffffffff802c0344>] sys_select+0x99/0xc1
[<ffffffff8020c23b>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
task running on this CPU:
# cat /proc/self/stack
[<ffffffff80216f79>] save_stack_trace_tsk+0x26/0x44
[<ffffffff802f59a5>] proc_pid_stack+0x6e/0xd3
[<ffffffff802f6da3>] proc_info_read+0x68/0xba
[<ffffffff802b2f17>] vfs_read+0xa9/0xe3
[<ffffffff802b301f>] sys_read+0x4c/0x73
[<ffffffff8020c23b>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
task running on another CPU in user-space:
# cat /proc/18579/stack
[<ffffffffffffffff>] 0xffffffffffffffff
task running on another CPU in kernel-space:
# cat /proc/18579/stack
[<ffffffff8026f111>] audit_syscall_exit+0x9c/0xed
[<ffffffff80214b49>] syscall_trace_leave+0x94/0xbb
[<ffffffffffffffff>] 0xffffffffffffffff
Ingo
next prev parent reply other threads:[~2008-11-07 9:03 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-06 19:01 [patch] add /proc/pid/stack to dump task's stack trace Ken Chen
2008-11-06 19:51 ` Alexey Dobriyan
2008-11-06 20:12 ` Ken Chen
2008-11-06 20:35 ` Ingo Molnar
2008-11-07 0:30 ` Ken Chen
2008-11-07 0:48 ` Alexey Dobriyan
2008-11-07 7:41 ` Ingo Molnar
2008-11-07 7:59 ` Ingo Molnar
2008-11-07 8:20 ` Alexey Dobriyan
2008-11-07 8:32 ` Ingo Molnar
2008-11-07 8:49 ` Alexey Dobriyan
2008-11-07 8:53 ` Ingo Molnar
2008-11-07 9:03 ` Ingo Molnar [this message]
2008-11-07 9:16 ` Andrew Morton
2008-11-07 9:29 ` Ingo Molnar
2008-11-07 17:51 ` Alexey Dobriyan
2008-11-08 12:06 ` Ingo Molnar
2008-11-10 23:54 ` Andrew Morton
2008-11-11 10:00 ` Ingo Molnar
2008-11-11 12:25 ` Marcin Slusarz
2008-11-11 12:33 ` Alexey Dobriyan
2008-11-11 13:20 ` Ingo Molnar
2008-11-11 14:03 ` Mikael Pettersson
2008-11-11 14:19 ` Ingo Molnar
2008-11-07 18:38 ` Ken Chen
2008-11-07 18:46 ` Paul Menage
2008-11-08 12:10 ` Ingo Molnar
2008-11-09 18:08 ` Alexey Dobriyan
2008-11-10 8:41 ` Ingo Molnar
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