Re: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U6

[Adam Heath]

On Tue, 19 Oct 2004, Ingo Molnar wrote:

> i have released the -U6 Real-Time Preemption patch:

(xterm/1219/CPU#0): new 39188 us maximum-latency critical section.
 => started at timestamp 71898423: <call_console_drivers+0x76/0x140>
 =>   ended at timestamp 71937611: <finish_task_switch+0x43/0xb0>
 [<c01327f0>] sub_preempt_count+0x60/0x90
 [<c01324de>] check_preempt_timing+0x15e/0x270
 [<c0117ca3>] finish_task_switch+0x43/0xb0
 [<c01327f0>] sub_preempt_count+0x60/0x90
 [<c0117ca3>] finish_task_switch+0x43/0xb0
 [<c0117ca3>] finish_task_switch+0x43/0xb0
 [<c02a5717>] __sched_text_start+0x2d7/0x5d0
 [<c02a684f>] down_write+0x12f/0x1e0
 [<c0113104>] mcount+0x14/0x18
 [<c02a684f>] down_write+0x12f/0x1e0
 [<c014dd45>] remove_vm_struct+0x45/0xb0
 [<c014fde2>] exit_mmap+0xf2/0x120
 [<c0119b96>] mmput+0x46/0xf0
 [<c0166d8f>] exec_mmap+0xaf/0x140
 [<c0166ffd>] flush_old_exec+0xfd/0x7f0
 [<c015b917>] vfs_read+0xe7/0x140
 [<c0113104>] mcount+0x14/0x18
 [<c0185d7f>] load_elf_binary+0x30f/0xbd0
 [<c01327f0>] sub_preempt_count+0x60/0x90
 [<c01db739>] up_read+0xf9/0x140
 [<c01323d8>] check_preempt_timing+0x58/0x270
 [<c01327f0>] sub_preempt_count+0x60/0x90
 [<c0131c6d>] __mcount+0x1d/0x20
 [<c0185a70>] load_elf_binary+0x0/0xbd0
 [<c0167aba>] search_binary_handler+0x19a/0x2e0
 [<c0167dac>] do_execve+0x1ac/0x260
 [<c0104b07>] sys_execve+0x47/0xd0
 [<c0106013>] syscall_call+0x7/0xb
preempt count: 00000002
. 2-level deep critical section nesting:
.. entry 1: __sched_text_start+0x3b/0x5d0 / (down_write+0x12f/0x1e0)
.. entry 2: print_traces+0x1d/0x80 / (dump_stack+0x23/0x30)

 =>   dump-end timestamp 71938197
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