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Date: Sun, 27 Sep 2009 22:01:07 +0800 From: Yong Zhang <yong.zhang0@...il.com> To: Maciej Rutecki <maciej.rutecki@...il.com> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, "Rafael J. Wysocki" <rjw@...k.pl>, clemens@...isch.de, venkatesh.pallipadi@...el.com, gregkh@...e.de Subject: Re: [2.6.31-git17] WARNING: at kernel/hrtimer.c:648 hres_timers_resume+0x40/0x50()/WARNING: at drivers/base/sys.c:353 __sysdev_resume+0xc3/0xe0() On Sun, Sep 27, 2009 at 6:25 PM, Maciej Rutecki <maciej.rutecki@...il.com> wrote: > 2009/9/27 Yong Zhang <yong.zhang0@...il.com>: >> >> Oops, TABLE is corrupted. Please use the attachment. > > kernel/time/timekeeping.c: In function ‘timekeeping_resume’: > kernel/time/timekeeping.c:577: error: ‘xtime_locks’ undeclared (first > use in this function) > kernel/time/timekeeping.c:577: error: (Each undeclared identifier is > reported only once > kernel/time/timekeeping.c:577: error: for each function it appears > in.) > make[3]: *** [kernel/time/timekeeping.o] Błąd 1 > make[2]: *** [kernel/time] Błąd 2 > > > I change: > write_seqlock(&xtime_locks); > to: > write_seqlock(&xtime_lock); > Oh, typo error. > Corrected patch in attachment. > > First warning has gone, but still I have this: > [ 120.868049] SMP alternatives: switching to UP code > [ 120.872570] CPU0 attaching NULL sched-domain. > [ 120.872574] CPU1 attaching NULL sched-domain. > [ 120.872581] CPU0 attaching NULL sched-domain. > [ 120.872787] CPU1 is down > [ 120.872846] Extended CMOS year: 2000 > [ 120.872945] PM: Creating hibernation image: > [ 120.876009] PM: Need to copy 107120 pages > [ 120.872009] PM: Restoring platform NVS memory > [ 120.872009] CPU0: Thermal monitoring handled by SMI > [ 120.872009] Extended CMOS year: 2000 > [ 120.872009] ------------[ cut here ]------------ > [ 120.872009] WARNING: at drivers/base/sys.c:353 > __sysdev_resume+0xc3/0xe0() > [ 120.872009] Hardware name: HP Compaq nx6310 (EY501ES#AKD) > [ 120.872009] Interrupts enabled after timekeeping_resume+0x0/0x1c0 Irq is enabled after timekeeping_resume(), the previous patch do something sensible. But we even don't know when the irq is enabled. such as in timekeeping_resume() or before enter timekeeping_resume(). But it seem that this is not due to timekeeping_resume(). Instead I'm afraid it's caused by buggy driver. So can you test the follow patch. And show the dmesg info(DEBUG level) after WARNING is triggered? diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index fb0f46f..4a00a1a 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -569,6 +569,9 @@ static int timekeeping_resume(struct sys_device *dev) unsigned long flags; struct timespec ts; + WARN_ONCE(!irqs_disabled(), + KERN_INFO "timekeeping_resume() called with IRQs enabled!"); + read_persistent_clock(&ts); clocksource_resume(); Thanks, Yong > [ 120.872009] Modules linked in: i915 drm_kms_helper drm i2c_algo_bit > i2c_core sco bnep rfcomm l2cap crc16 xt_tcpudp xt_limit xt_state > iptable_filter nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables > x_tables aes_i586 aes_generic cbc dm_crypt dm_snapshot dm_mirror > dm_region_hash dm_log dm_mod hp_wmi fuse sbp2 loop > snd_hda_codec_si3054 snd_hda_codec_analog snd_hda_intel snd_hda_codec > snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy arc4 snd_seq_oss ecb > snd_seq_midi snd_rawmidi iwl3945 snd_seq_midi_event iwlcore btusb > firmware_class snd_seq bluetooth snd_timer mac80211 pcmcia > snd_seq_device led_class b44 video ohci1394 backlight ssb rtc_cmos snd > yenta_socket cfg80211 intel_agp soundcore rsrc_nonstatic uhci_hcd > ehci_hcd rtc_core usbcore psmouse snd_page_alloc agpgart pcmcia_core > rfkill rtc_lib ieee1394 sg output evdev serio_raw mii fan button ac > battery > [ 120.872009] Pid: 3510, comm: pm-hibernate Not tainted 2.6.31-git17 > #1 > [ 120.872009] Call Trace: > [ 120.872009] [<c030f4a3>] ? __sysdev_resume+0xc3/0xe0 > [ 120.872009] [<c030f4a3>] ? __sysdev_resume+0xc3/0xe0 > [ 120.872009] [<c013c3a1>] warn_slowpath_common+0x71/0xc0 > [ 120.872009] [<c030f4a3>] ? __sysdev_resume+0xc3/0xe0 > [ 120.872009] [<c013c43b>] warn_slowpath_fmt+0x2b/0x30 > [ 120.872009] [<c030f4a3>] __sysdev_resume+0xc3/0xe0 > [ 120.872009] [<c015f810>] ? timekeeping_resume+0x0/0x1c0 > [ 120.872009] [<c030f50f>] sysdev_resume+0x4f/0xc0 > [ 120.872009] [<c0176909>] ? hibernate_nvs_restore+0x19/0x60 > [ 120.872009] [<c0172ac1>] hibernation_snapshot+0x1d1/0x210 > [ 120.872009] [<c0171b54>] ? freeze_processes+0x44/0xa0 > [ 120.872009] [<c0172bef>] hibernate+0xef/0x190 > [ 120.872009] [<c0171590>] ? state_store+0x0/0xc0 > [ 120.872009] [<c017163b>] state_store+0xab/0xc0 > [ 120.872009] [<c0171590>] ? state_store+0x0/0xc0 > [ 120.872009] [<c0285e04>] kobj_attr_store+0x24/0x30 > [ 120.872009] [<c0223d82>] sysfs_write_file+0xa2/0x100 > [ 120.872009] [<c01d880c>] vfs_write+0x9c/0x150 > [ 120.872009] [<c0223ce0>] ? sysfs_write_file+0x0/0x100 > [ 120.872009] [<c01d8982>] sys_write+0x42/0x70 > [ 120.872009] [<c0102f04>] sysenter_do_call+0x12/0x22 > [ 120.872009] ---[ end trace 51d3cc987b340170 ]--- > [ 120.872009] Enabling non-boot CPUs ... > [ 120.872009] SMP alternatives: switching to SMP code > > Regards > -- > Maciej Rutecki > http://www.maciek.unixy.pl > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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