12 Mar, 2011

1 commit

• 167400d34   blk-cgroup: Add unaccounted time to timeslice_used. ... Browse Code »

  There are two kind of times that tasks are not charged for: the first
  seek and the extra time slice used over the allocated timeslice. Both
  of these exported as a new unaccounted_time stat.

  I think it would be good to have this reported in 'time' as well, but
  that is probably a separate discussion.

  Signed-off-by: Justin TerAvest
  Signed-off-by: Jens Axboe

  Justin TerAvest

  2011-03-12 23:54:00 +0800  

16 Sep, 2010

1 commit

• 062a644d6   blk-cgroup: Prepare the base for supporting more than one IO control policies ... Browse Code »

  o This patch prepares the base for introducing new IO control policies.
  Currently all the code is written knowing there is only one policy
  and that is proportional bandwidth. Creating infrastructure for newer
  policies to come in.

  o Also there were many functions which were generated using macro. It was
  very confusing. Got rid of those.

  Signed-off-by: Vivek Goyal
  Signed-off-by: Jens Axboe

  Vivek Goyal

  2010-09-16 14:42:04 +0800  

21 Jun, 2010

1 commit

• 9e495db1a   cfq: fix recursive call in cfq_blkiocg_update_completion_stats() ... Browse Code »

  e98ef89b has a typo, causing cfq_blkiocg_update_completion_stats()
  to call itself instead of blkiocg_update_completion_stats().

  Reported-by: Ingo Molnar
  Signed-off-by: Jens Axboe

  Jens Axboe

  2010-06-21 15:10:55 +0800  

19 Jun, 2010

1 commit

• e98ef89b3   cfq-iosched: Fixed boot warning with BLK_CGROUP=y and CFQ_GROUP_IOSCHED=n ... Browse Code »

  Hi Jens,

  Few days back Ingo noticed a CFQ boot time warning. This patch fixes it.
  The issue here is that with CFQ_GROUP_IOSCHED=n, CFQ should not really
  be making blkio stat related calls.

  > Hm, it's still not entirely fixed, as of 2.6.35-rc2-00131-g7908a9e. With
  > some
  > configs i get bad spinlock warnings during bootup:
  >
  > [ 28.968013] initcall net_olddevs_init+0x0/0x82 returned 0 after 93750
  > usecs
  > [ 28.972003] calling b44_init+0x0/0x55 @ 1
  > [ 28.976009] bus: 'pci': add driver b44
  > [ 28.976374] sda:
  > [ 28.978157] BUG: spinlock bad magic on CPU#1, async/0/117
  > [ 28.980000] lock: 7e1c5bbc, .magic: 00000000, .owner: /-1, +.owner_cpu: 0
  > [ 28.980000] Pid: 117, comm: async/0 Not tainted +2.6.35-rc2-tip-01092-g010e7ef-dirty #8183
  > [ 28.980000] Call Trace:
  > [ 28.980000] [] ? printk+0x20/0x24
  > [ 28.980000] [] spin_bug+0x7c/0x87
  > [ 28.980000] [] do_raw_spin_lock+0x1e/0x123
  > [ 28.980000] [] ? _raw_spin_lock_irqsave+0x12/0x20
  > [ 28.980000] [] _raw_spin_lock_irqsave+0x1a/0x20
  > [ 28.980000] [] blkiocg_update_io_add_stats+0x25/0xfb
  > [ 28.980000] [] ? cfq_prio_tree_add+0xb1/0xc1
  > [ 28.980000] [] cfq_insert_request+0x8c/0x425

  Signed-off-by: Vivek Goyal
  Signed-off-by: Jens Axboe

  Vivek Goyal

  2010-06-19 01:57:47 +0800