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List:       linux-kernel
Subject:    Re: [PATCH -v3 0/14] PCI: allocate pci bus num range for unassigned bridge busn
From:       Bjorn Helgaas <bhelgaas () google ! com>
Date:       2012-01-31 23:30:34
Message-ID: CAErSpo4r-4JH+3cqnsgR1fgNsGQL7wH_JozPSgaHKTweKtoM7w () mail ! gmail ! com
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On Tue, Jan 31, 2012 at 10:56 AM, Yinghai Lu <yinghai@kernel.org> wrote:
> On Tue, Jan 31, 2012 at 9:49 AM, Bjorn Helgaas <bhelgaas@google.com> wrote:
>> On Mon, Jan 30, 2012 at 11:42 PM, Yinghai Lu <yinghai@kernel.org> wrote:
>>> could be found at:
>>>        git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for-pci-busn-alloc
>>>
>>> -v2: according to Jesse, split to more small patches.
>>> -v3: address some request from Bjorn. like make use %pR for busn_res debug print
>>>        out, and move the comment change with code change.
>>
>> I don't see v3 in that git tree; maybe it needs to be pushed?
>
> yeah. forgot to push.
>
> should be there now.

Thanks.  I tried this, and it blew up as soon as I did a rescan.  More
complete console log attached.

# echo 1 > /sys/bus/pci/rescan
[  140.237870] pci_bus 0000:00: scanning bus pass 0
[  140.242551] pci 0000:00:01.0: scanning [bus 01-01] behind bridge, pass 0
[  140.249249] pci 0000:00:01.0: check if busn 01-01 is in busn_res: [bus 00-7e]
[  140.256377] pci 0000:00:01.0: bus configuration invalid, reconfiguring
[  140.262912] pci 0000:00:01.1: scanning [bus 02-02] behind bridge, pass 0
[  140.269593] pci 0000:00:01.1: check if busn 02-02 is in busn_res: [bus 00-7e]
[  140.276721] pci 0000:00:01.1: bus configuration invalid, reconfiguring
...
[  149.111070] ------------[ cut here ]------------
[  149.115721] WARNING: at net/sched/sch_generic.c:256
dev_watchdog+0x259/0x270()
[  149.126339] NETDEV WATCHDOG: eth0 (bnx2x): transmit queue 2 timed out
[  149.132784] Modules linked in: w1_therm ds2482 wire msr cpuid bnx2x
crc32c libcrc32c mdio ipv6 genrtc
[  149.142259] Pid: 0, comm: swapper/11 Not tainted 3.3.0-smp-DEV #4
[  149.148349] Call Trace:
[  149.150816]  <IRQ>  [<ffffffff8108de33>] warn_slowpath_common+0x83/0x120
[  149.157545]  [<ffffffff8108df86>] warn_slowpath_fmt+0x46/0x60
[  149.163282]  [<ffffffff810af15a>] ? __queue_work+0x15a/0x4b0
[  149.168928]  [<ffffffff81558259>] dev_watchdog+0x259/0x270
[  149.174412]  [<ffffffff8109fe2e>] run_timer_softirq+0x13e/0x8b0
[  149.180344]  [<ffffffff810c8ace>] ? scheduler_tick+0x1fe/0x2f0
[  149.186174]  [<ffffffff81558000>] ? __netdev_watchdog_up+0x80/0x80
[  149.192359]  [<ffffffff810764bd>] ? lapic_next_event+0x1d/0x30
[  149.198180]  [<ffffffff81095981>] __do_softirq+0xb1/0x1e0
[  149.203594]  [<ffffffff810e1114>] ? tick_program_event+0x24/0x30
[  149.209604]  [<ffffffff815e9d8c>] call_softirq+0x1c/0x30
[  149.214932]  [<ffffffff810580b5>] do_softirq+0x55/0x90
[  149.220068]  [<ffffffff8109578d>] irq_exit+0xbd/0xe0
[  149.225040]  [<ffffffff815ea50e>] smp_apic_timer_interrupt+0x6e/0x99
[  149.231405]  [<ffffffff815e944b>] apic_timer_interrupt+0x6b/0x70
[  149.237408]  <EOI>  [<ffffffff814f0aa5>] ? poll_idle+0x45/0x90
[  149.243289]  [<ffffffff814f0a7c>] ? poll_idle+0x1c/0x90
[  149.248505]  [<ffffffff810bd578>] ? hrtimer_start+0x18/0x20
[  149.254079]  [<ffffffff814f05a0>] cpuidle_idle_call+0xe0/0x200
[  149.259917]  [<ffffffff81055fd6>] cpu_idle+0x96/0xf0
[  149.264903]  [<ffffffff818f4f8c>] start_secondary+0x1d1/0x1d5
[  149.270640] ---[ end trace 628fdd480099dccf ]---
[  149.285310] bnx2x: [bnx2x_stats_comp:143(eth0)]timeout waiting for
stats finished
[  149.302817] bnx2x: [bnx2x_stats_comp:143(eth0)]timeout waiting for
stats finished
[  150.310050] bnx2x: [bnx2x_clean_tx_queue:1375(eth0)]timeout waiting
for queue[0]: txdata->tx_pkt_prod(232) != txdata->tx_pkt_cons(229)
...

["boot" (application/octet-stream)]
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