Messages in this thread | | | Date | Wed, 2 Jun 2010 13:16:53 +0200 | From | Ingo Molnar <> | Subject | blkiocg_update_io_add_stats(): INFO: trying to register non-static key |
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btw., there's another warning triggered by the new blk-cgroups stats code:
sda:INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. Pid: 81, comm: async/2 Not tainted 2.6.35-rc1-tip-01073-gd2f7698-dirty #6765 Call Trace: [<ffffffff81065d6d>] register_lock_class+0x15f/0x365 [<ffffffff8105c426>] ? sched_clock_local+0x1d/0x83 [<ffffffff8105c557>] ? sched_clock_cpu+0xcb/0xd9 [<ffffffff81067184>] __lock_acquire+0x97/0x481 [<ffffffff810088d4>] ? native_sched_clock+0x37/0x6d [<ffffffff81321b74>] ? blkiocg_update_io_add_stats+0x32/0x12e [<ffffffff81067644>] lock_acquire+0xd6/0xfd [<ffffffff81321b74>] ? blkiocg_update_io_add_stats+0x32/0x12e [<ffffffff81850859>] _raw_spin_lock_irqsave+0x47/0x82 [<ffffffff81321b74>] ? blkiocg_update_io_add_stats+0x32/0x12e [<ffffffff81321b74>] blkiocg_update_io_add_stats+0x32/0x12e [<ffffffff81325048>] cfq_insert_request+0xdd/0x47c [<ffffffff813135b9>] elv_insert+0x12a/0x1f4 [<ffffffff8131371c>] __elv_add_request+0x99/0xa1 [<ffffffff8131817a>] __make_request+0x3e2/0x45f [<ffffffff8131736e>] generic_make_request+0x2a0/0x316 [<ffffffff8185405e>] ? sub_preempt_count+0xf/0xb7 [<ffffffff8131749c>] submit_bio+0xb8/0xd6 [<ffffffff81117e1b>] submit_bh+0xf5/0x117 [<ffffffff8111b36e>] block_read_full_page+0x1f2/0x214 [<ffffffff8111ce86>] ? blkdev_get_block+0x0/0x66 [<ffffffff8185405e>] ? sub_preempt_count+0xf/0xb7 [<ffffffff8185405e>] ? sub_preempt_count+0xf/0xb7 [<ffffffff810c6ddd>] ? __lru_cache_add+0x79/0x97 [<ffffffff8111de4d>] blkdev_readpage+0x18/0x1a [<ffffffff810becb0>] do_read_cache_page+0x95/0x128 [<ffffffff8111de35>] ? blkdev_readpage+0x0/0x1a [<ffffffff810bed87>] read_cache_page_async+0x1c/0x1e [<ffffffff810bed97>] read_cache_page+0xe/0x18 [<ffffffff8114698f>] read_dev_sector+0x33/0xbe [<ffffffff8114797d>] adfspart_check_EESOX+0x59/0x1e7 [<ffffffff8185405e>] ? sub_preempt_count+0xf/0xb7 [<ffffffff8185405e>] ? sub_preempt_count+0xf/0xb7 [<ffffffff8185405e>] ? sub_preempt_count+0xf/0xb7 [<ffffffff8103dede>] ? vprintk+0x395/0x3f0 [<ffffffff811472f0>] ? kzalloc.clone.1+0x13/0x15 [<ffffffff8184dfe5>] ? printk+0x69/0x6b [<ffffffff8114771d>] rescan_partitions+0x186/0x38d [<ffffffff81513cfb>] ? sd_open+0xf1/0x1bd [<ffffffff8111e512>] __blkdev_get+0x291/0x372 [<ffffffff8132a4ba>] ? kobject_put+0x48/0x4c [<ffffffff8111e603>] blkdev_get+0x10/0x12 [<ffffffff81146bcd>] register_disk+0xb9/0x11d [<ffffffff8131f3c4>] add_disk+0xb0/0x10c [<ffffffff81515d4c>] sd_probe_async+0x12a/0x200 [<ffffffff8105f4a4>] ? ktime_get+0x65/0xbe [<ffffffff8105d742>] async_thread+0x10e/0x21c [<ffffffff81039390>] ? default_wake_function+0x0/0x14 [<ffffffff8105d634>] ? async_thread+0x0/0x21c [<ffffffff81056c01>] kthread+0x9b/0xa3 [<ffffffff810030f4>] kernel_thread_helper+0x4/0x10 [<ffffffff81056b66>] ? kthread+0x0/0xa3 [<ffffffff810030f0>] ? kernel_thread_helper+0x0/0x10 sda1 sda2 sda3 < sda5 sda6 sda7 sda8 sda9 sda10 > device: 'sda1': device_add PM: Adding info for No Bus:sda1
seems to be a lock taken by:
[<ffffffff81321b74>] blkiocg_update_io_add_stats+0x32/0x12e
Ingo
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