lkml.org 
[lkml]   [2004]   [Aug]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: [patch] voluntary-preempt-2.6.8-rc3-O5
    From
    Date
    On Tue, 2004-08-10 at 09:26, Ingo Molnar wrote:
    > i've uploaded the latest version of the voluntary-preempt patch:
    >
    > http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.8-rc3-O5
    >
    > -O5 fixes the APIC lockup issues. The bug was primarily caused by PCI
    > POST delays causing IRQ storms of level-triggered IRQ sources that were
    > hardirq-redirected. Also found some bugs in delayed-IRQ masking and
    > unmasking. SMP should thus work again too.
    >

    Correction, mlockall-test *does* cause xruns. Here is the trace:

    (mlockall-test/12466): 10303us non-preemptible critical section violated 400 us preempt threshold starting at get_user_pages+0xa5/0x3d0 and ending at get_user_pages+0x2e7/0x3d0
    [<c0106777>] dump_stack+0x17/0x20
    [<c01140eb>] sub_preempt_count+0x4b/0x60
    [<c013dbe7>] get_user_pages+0x2e7/0x3d0
    [<c013f198>] make_pages_present+0x68/0x90
    [<c013f5ed>] mlock_fixup+0x8d/0xb0
    [<c013f8d0>] do_mlockall+0x70/0x90
    [<c013f989>] sys_mlockall+0x99/0xa0
    [<c0106117>] syscall_call+0x7/0xb
    ALSA /home/rlrevell/cvs/alsa/alsa-driver/alsa-kernel/core/pcm_lib.c:139: XRUN: pcmC0D2c
    [<c0106777>] dump_stack+0x17/0x20
    [<de92f79b>] snd_pcm_period_elapsed+0x28b/0x3f0 [snd_pcm]
    [<de96c1d1>] snd_emu10k1_interrupt+0xd1/0x3c0 [snd_emu10k1]
    [<c011ac63>] generic_handle_IRQ_event+0x33/0x60
    [<c0107a27>] do_IRQ+0xb7/0x190
    [<c0106338>] common_interrupt+0x18/0x20
    [<c0114008>] __touch_preempt_timing+0x8/0x20
    [<c013dbf4>] get_user_pages+0x2f4/0x3d0
    [<c013f198>] make_pages_present+0x68/0x90
    [<c013f5ed>] mlock_fixup+0x8d/0xb0
    [<c013f8d0>] do_mlockall+0x70/0x90
    [<c013f989>] sys_mlockall+0x99/0xa0
    [<c0106117>] syscall_call+0x7/0xb

    Here is a different one:

    ALSA /home/rlrevell/cvs/alsa/alsa-driver/alsa-kernel/core/pcm_lib.c:139: XRUN: pcmC0D0p
    [<c0106777>] dump_stack+0x17/0x20
    [<de92f79b>] snd_pcm_period_elapsed+0x28b/0x3f0 [snd_pcm]
    [<de96c437>] snd_emu10k1_interrupt+0x337/0x3c0 [snd_emu10k1]
    [<c011ac63>] generic_handle_IRQ_event+0x33/0x60
    [<c0107a27>] do_IRQ+0xb7/0x190
    [<c0106338>] common_interrupt+0x18/0x20
    [<c0266777>] schedule+0x2d7/0x5b0
    [<c0266fa7>] schedule_timeout+0x57/0xa0
    [<c015fef1>] do_poll+0xa1/0xc0
    [<c0160041>] sys_poll+0x131/0x220
    [<c0106117>] syscall_call+0x7/0xb
    (jackd/12430): 17135us non-preemptible critical section violated 400 us preempt threshold starting at schedule+0x57/0x5b0 and ending at schedule+0x2ef/0x5b0
    [<c0106777>] dump_stack+0x17/0x20
    [<c01140eb>] sub_preempt_count+0x4b/0x60
    [<c026678f>] schedule+0x2ef/0x5b0
    [<c0266fa7>] schedule_timeout+0x57/0xa0
    [<c015fef1>] do_poll+0xa1/0xc0
    [<c0160041>] sys_poll+0x131/0x220
    [<c0106117>] syscall_call+0x7/0xb




    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 14:05    [W:4.060 / U:0.312 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site