Messages in this thread | | | Date | Tue, 11 Nov 2008 15:33:27 +0300 | From | Alexey Dobriyan <> | Subject | Re: [patch] add /proc/pid/stack to dump task's stack trace |
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On Tue, Nov 11, 2008 at 01:25:36PM +0100, Marcin Slusarz wrote: > On Fri, Nov 07, 2008 at 10:03:04AM +0100, Ingo Molnar wrote: > > > > 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 > > so this file provides view of _kernel_ stack only?
Of course!
> shouldn't it be named kernel-stack then? > > > 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
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