On 10/3/07, Michael Krufky <mkrufky@xxxxxxxxx> wrote: > On 10/3/07, Ricardo Cerqueira <v4l@xxxxxxxxxxxxx> wrote: > > I've tested this with a blackbird board (HVR-1300), both with the MPEG > > encoder and analog. > > > > - MPEG is working fine, even after merging in Mike Krufky's and my own > > blackbird patches for audio. No drops I can see. > > - Raw analog video is OK > > - Analog audio through cx88-alsa (which uses videobuf) is also fine. > > - Playing raw and MPEG simultaneosly works (as long as raw is started > > first, something that's also happening with the old videobuf) > > > > Summarizing: there's no visible performance or functional difference > > between the new and the old videobuf implementations on the hardware I > > have available to test. > > > > Reviewed-by: Ricardo Cerqueira <v4l@xxxxxxxxxxxxx> > > Ah, this is great news! > > I look forward to testing the new tree using cx88-blackbird, cx88-dvb > and cx23885 over the upcoming weekend. I'll report whether I have the > same results as soon as I can. I've tested the master branch under the following conditions: 1) cx88 raw analog video 2) cx88-blackbird encoded mpeg stream 3) cx88-dvb mpeg TS I'm pleased to report that the above three tests worked out successfully. However, cx23885 is now broken. Upon starting a DVB stream, the following OOPS is generated: [ 280.562598] Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP: [ 280.562609] [<ffffffff881a0931>] :videobuf_core:videobuf_mmap_setup+0x21/0xf0 [ 280.562637] PGD 204fc067 PUD 20504067 PMD 0 [ 280.562642] Oops: 0000 [1] SMP [ 280.562646] CPU 1 [ 280.562648] Modules linked in: binfmt_misc rfcomm l2cap bluetooth ppdev i915 drm cpufreq_userspace cpufreq_stats cpufreq_ondemand freq_table cpufreq_conse rvative cpufreq_powersave tc1100_wmi sony_acpi dev_acpi pcc_acpi sbs button ac asus_acpi backlight dock i2c_ec container battery video nls_utf8 ntfs nls_iso8 859_1 nls_cp437 vfat fat ipv6 parport_pc lp parport fuse mt2131 s5h1409 cx88_blackbird cx2341x rtc_isl1208 ir_kbd_i2c snd_seq_dummy snd_seq_oss dvb_pll lgdt3 30x snd_hda_intel snd_seq_midi tuner snd_hda_codec cx88_dvb cx88_vp3054_i2c tea5767 tda8290 tuner_simple mt20xx cx23885 cx88_alsa snd_pcm_oss snd_mixer_oss v ideobuf_dvb snd_pcm dvb_core snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd cx8800 cx8802 cx88xx soundcore pcspkr psmouse serio_raw ir_c ommon compat_ioctl32 i2c_algo_bit tveeprom i2c_core iTCO_wdt iTCO_vendor_support videodev v4l2_common v4l1_compat videobuf_dma_sg videobuf_core btcx_risc shp chp pci_hotplug snd_page_alloc intel_agp af_packet tsdev evdev ext3 jbd mbcache sg sd_mod sr_mod cdrom usbhid hid ehci_hcd ahci libata scsi_mod uhci_hcd e100 0 usbcore thermal processor fan fbcon tileblit font bitblit softcursor vesafb cfbcopyarea cfbimgblt cfbfillrect capability commoncap [ 280.562748] Pid: 8369, comm: cx23885[0] dvb Not tainted 2.6.20-16-generic #2 [ 280.562752] RIP: 0010:[<ffffffff881a0931>] [<ffffffff881a0931>] :videobuf_core:videobuf_mmap_setup+0x21/0xf0 [ 280.562764] RSP: 0018:ffff81001bc21e40 EFLAGS: 00010282 [ 280.562767] RAX: 0000000000000000 RBX: ffff810033bc6020 RCX: 0000000000000002 [ 280.562770] RDX: 0000000000006000 RSI: 0000000000000020 RDI: ffff810033bc6020 [ 280.562774] RBP: ffff810033bc6010 R08: ffff81001bc20000 R09: 0000000000000000 [ 280.562778] R10: 0000001000000003 R11: ffffffff80231700 R12: ffff81001b37db98 [ 280.562780] R13: 0000000000006000 R14: 0000000000000020 R15: 0000000000000002 [ 280.562784] FS: 0000000000000000(0000) GS:ffff8100011e0ec0(0000) knlGS:0000000000000000 [ 280.562788] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b [ 280.562790] CR2: 0000000000000000 CR3: 000000002057e000 CR4: 00000000000006e0 [ 280.562794] Process cx23885[0] dvb (pid: 8369, threadinfo ffff81001bc20000, task ffff81001f152100) [ 280.562797] Stack: 000000000000006f ffffffff80265bbb ffff81001bc21f00 ffff810033bc6020 [ 280.562805] ffff810033bc6010 ffff81001b37db98 ffff810033bc6178 ffff810033bc6020 [ 280.562812] ffff810033bc6220 ffffffff881a0a7b 000000011bc21ed0 ffffffff8028b434 [ 280.562818] Call Trace: [ 280.562831] [<ffffffff80265bbb>] thread_return+0x0/0xf5 [ 280.562878] [<ffffffff881a0a7b>] :videobuf_core:videobuf_read_start+0x7b/0x150 [ 280.562889] [<ffffffff8028b434>] __wake_up_common+0x44/0x80 [ 280.562923] [<ffffffff882943f6>] :videobuf_dvb:videobuf_dvb_thread+0x46/0x170 [ 280.562951] [<ffffffff882943b0>] :videobuf_dvb:videobuf_dvb_thread+0x0/0x170 [ 280.562957] [<ffffffff802a3170>] keventd_create_kthread+0x0/0x90 [ 280.562968] [<ffffffff80233fa9>] kthread+0xd9/0x120 [ 280.563006] [<ffffffff80261ec8>] child_rip+0xa/0x12 [ 280.563020] [<ffffffff802a3170>] keventd_create_kthread+0x0/0x90 [ 280.563082] [<ffffffff80233ed0>] kthread+0x0/0x120 [ 280.563091] [<ffffffff80261ebe>] child_rip+0x0/0x12 [ 280.563112] [ 280.563114] [ 280.563114] Code: 8b 30 81 fe 03 10 26 12 74 17 ba 03 10 26 12 48 c7 c7 a0 1c [ 280.563129] RIP [<ffffffff881a0931>] :videobuf_core:videobuf_mmap_setup+0x21/0xf0 [ 280.563139] RSP <ffff81001bc21e40> [ 280.563141] CR2: 0000000000000000 [ 280.563144] <0>Bad page state in process 'less' [ 291.308190] page:ffff81003ee844d0 flags:0x0100000000000000 mapping:0000000000000000 mapcount:0 count:-1 [ 291.308192] Trying to fix it up, but a reboot is needed [ 291.308194] Backtrace: [ 291.308201] [ 291.308202] Call Trace: [ 291.308242] [<ffffffff802c1b48>] bad_page+0x58/0x90 [ 291.308264] [<ffffffff8020a1c0>] get_page_from_freelist+0x340/0x570 [ 291.308362] [<ffffffff8020f263>] __alloc_pages+0x63/0x310 [ 291.308430] [<ffffffff802089f3>] __handle_mm_fault+0x503/0xab0 [ 291.308470] [<ffffffff8022e608>] wake_up_bit+0x18/0x40 [ 291.308490] [<ffffffff80209025>] __d_lookup+0x85/0x120 [ 291.308530] [<ffffffff8026a057>] do_page_fault+0x477/0x890 [ 291.308540] [<ffffffff8020c934>] do_lookup+0x74/0x210 [ 291.308569] [<ffffffff8020cebf>] dput+0x2f/0x170 [ 291.308589] [<ffffffff80209d2b>] __link_path_walk+0xc6b/0xdc0 [ 291.308609] [<ffffffff80212841>] __do_page_cache_readahead+0xc1/0x290 [ 291.308686] [<ffffffff8026806d>] error_exit+0x0/0x84 [ 291.308769] [<ffffffff8020cbf3>] file_read_actor+0x43/0x140 [ 291.308832] [<ffffffff8020bc90>] do_generic_mapping_read+0x1c0/0x520 [ 291.308842] [<ffffffff8020cbb0>] file_read_actor+0x0/0x140 [ 291.308979] [<ffffffff80216b2c>] generic_file_aio_read+0x16c/0x1b0 [ 291.309047] [<ffffffff8020c86f>] do_sync_read+0xcf/0x120 [ 291.309106] [<ffffffff80216cd9>] vma_merge+0x169/0x240 [ 291.309117] [<ffffffff802a3350>] autoremove_wake_function+0x0/0x30 [ 291.309156] [<ffffffff8020dd02>] do_mmap_pgoff+0x692/0x820 [ 291.309234] [<ffffffff8020afbb>] vfs_read+0xdb/0x1a0 [ 291.309263] [<ffffffff802113f3>] sys_read+0x53/0x90 [ 291.309303] [<ffffffff8026111e>] system_call+0x7e/0x83 [ 291.309379] Regards, -Mike _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
