On Saturday 23 July 2011 13:17:04 Ed Tomlinson wrote:

On Saturday 23 July 2011 11:13:30 Thomas Gleixner wrote:

quoted

I'm pleased to announce the 3.0-rt2 release.

Changes versus 3.0-rt1:

  * mqueue fix (Yoshitake Kobayashi)

  * dca locking fix (Mike Galbraith)

  * trace updates (Carsten Emde)

  * Fixed vprintk wreckage and rcutorture (tglx)

Known issues:

  * Some weird "console=..." commandline + config dependent
    interactions which have been not yet investigated down to their
    root cause. Result in a boot hang. YMMV

Got this warning too.  Was a change was missed?

[  364.392603] NOHZ: local_softirq_pending 08
[  369.320859] NOHZ: local_softirq_pending 08
[  382.126867] NOHZ: local_softirq_pending 08
[  388.525880] NOHZ: local_softirq_pending 08
[  388.526510] NOHZ: local_softirq_pending 08
[  412.148451] NOHZ: local_softirq_pending 08
[  418.550136] NOHZ: local_softirq_pending 08
[  418.550290] NOHZ: local_softirq_pending 08
[  429.870609] NOHZ: local_softirq_pending 08
[  453.992649] NOHZ: local_softirq_pending 08
[  905.155424] ------------[ cut here ]------------
[  905.155441] WARNING: at kernel/trace/trace.c:2729 tracing_ctrl_write+0x203/0x220()
[  905.155447] Hardware name: System Product Name
[  905.155452] tracing_enabled is deprecated. Use tracing_on
[  905.155456] Modules linked in: hidp loop acpi_pad video pci_slot container fan tun sit tunnel4 ipv6 bnep rfcomm snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss microcode af_packet kvm_amd kvm pciehp pci_hotplug powernow_k8 mperf sr_mod cdrom btusb bluetooth ath3k pl2303 usbserial uas usb_storage joydev hid_microsoft usbhid gspca_ov519 gspca_main videodev v4l2_compat_ioctl32 usblp ata_generic amd64_edac_mod pcspkr k10temp edac_mce_amd pata_atiixp ohci_hcd ehci_hcd snd_hda_codec_hdmi evdev snd_hda_codec_realtek asus_atk0110 snd_hda_intel snd_hda_codec snd_pcm snd_timer snd sky2 soundcore snd_page_alloc wmi button processor unix
[  905.155555] Pid: 4263, comm: latencytop Not tainted 3.0.0-rt2-crc+ #351
[  905.155561] Call Trace:
[  905.155573]  [<ffffffff8104b82f>] warn_slowpath_common+0x7f/0xc0
[  905.155582]  [<ffffffff8104b926>] warn_slowpath_fmt+0x46/0x50
[  905.155593]  [<ffffffff81582ecc>] ? _mutex_lock+0x3c/0x50
[  905.155601]  [<ffffffff810d122e>] ? tracing_ctrl_write+0xce/0x220
[  905.155609]  [<ffffffff810d1363>] tracing_ctrl_write+0x203/0x220
[  905.155618]  [<ffffffff811531dc>] ? rw_verify_area+0xec/0x190
[  905.155625]  [<ffffffff8115368c>] vfs_write+0x11c/0x1c0
[  905.155632]  [<ffffffff81153824>] sys_write+0x54/0x90
[  905.155641]  [<ffffffff8158afab>] system_call_fastpath+0x16/0x1b
[  905.155647] ---[ end trace 0000000000000002 ]---

I've also not seen the "NOHZ: local_softirq_pending 08" messages before.

Thanks
Ed