SysRq : Show Blocked State
  task                        PC stack   pid father
i915          D 00000000ffffffff     0   315      2 0x00000000
 ffff88022db6bc80 0000000000000046 ffff88022db6bbe0 ffffffff81019ec9
 ffff88022db6bc00 ffffffff8108bb4d ffff88022db6bc00 ffff88022e87c720
 ffff88022e87cae0 ffff88022db6bfd8 000000000000fb68 ffff88022e87cae0
Call Trace:
 [<ffffffff81019ec9>] ? sched_clock+0x9/0x10
 [<ffffffff8108bb4d>] ? sched_clock_cpu+0xcd/0x110
 [<ffffffff815555ed>] ? __mutex_lock_common+0x22d/0x3e0
 [<ffffffff81555558>] __mutex_lock_common+0x198/0x3e0
 [<ffffffffa00d2032>] ? intel_idle_update+0x62/0x1d0 [i915]
 [<ffffffff81055e40>] ? finish_task_switch+0x0/0x100
 [<ffffffffa00d2032>] ? intel_idle_update+0x62/0x1d0 [i915]
 [<ffffffff81555855>] mutex_lock_nested+0x35/0x40
 [<ffffffffa00d2032>] intel_idle_update+0x62/0x1d0 [i915]
 [<ffffffffa00d1fd0>] ? intel_idle_update+0x0/0x1d0 [i915]
 [<ffffffff810807ac>] worker_thread+0x21c/0x3d0
 [<ffffffff8108075b>] ? worker_thread+0x1cb/0x3d0
 [<ffffffff81085720>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff81080590>] ? worker_thread+0x0/0x3d0
 [<ffffffff810853e6>] kthread+0x96/0xa0
 [<ffffffff810141ea>] child_rip+0xa/0x20
 [<ffffffff81013b50>] ? restore_args+0x0/0x30
 [<ffffffff81085350>] ? kthread+0x0/0xa0
 [<ffffffff810141e0>] ? child_rip+0x0/0x20
Xorg          D 0000000000000001     0  1194   1158 0x00400004
 ffff88021a08dc18 0000000000000046 0000000000000000 ffffffff81019ec9
 ffff88021a08db98 ffff8800359d6098 ffff88021a08db98 000000010057225f
 ffff88021e864ae0 ffff88021a08dfd8 000000000000fb68 ffff88021e864ae0
Call Trace:
 [<ffffffff81019ec9>] ? sched_clock+0x9/0x10
 [<ffffffff81555558>] __mutex_lock_common+0x198/0x3e0
 [<ffffffffa00bfde0>] ? i915_gem_throttle_ioctl+0x40/0x90 [i915]
 [<ffffffff8145befc>] ? sock_aio_write+0x13c/0x150
 [<ffffffffa00bfde0>] ? i915_gem_throttle_ioctl+0x40/0x90 [i915]
 [<ffffffff81555855>] mutex_lock_nested+0x35/0x40
 [<ffffffffa00bfde0>] i915_gem_throttle_ioctl+0x40/0x90 [i915]
 [<ffffffffa0059ead>] drm_ioctl+0x27d/0x480 [drm]
 [<ffffffffa00bfda0>] ? i915_gem_throttle_ioctl+0x0/0x90 [i915]
 [<ffffffff8101a043>] ? native_sched_clock+0x13/0x60
 [<ffffffff81019ec9>] ? sched_clock+0x9/0x10
 [<ffffffff8108bb4d>] ? sched_clock_cpu+0xcd/0x110
 [<ffffffff81097ead>] ? trace_hardirqs_off+0xd/0x10
 [<ffffffff8101a043>] ? native_sched_clock+0x13/0x60
 [<ffffffff81019ec9>] ? sched_clock+0x9/0x10
 [<ffffffff8115e6f2>] vfs_ioctl+0x22/0xa0
 [<ffffffff81556f00>] ? _spin_unlock_irq+0x30/0x40
 [<ffffffff8115e89a>] do_vfs_ioctl+0x8a/0x5a0
 [<ffffffff8109b77d>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffff81556f00>] ? _spin_unlock_irq+0x30/0x40
 [<ffffffff8106aceb>] ? do_setitimer+0x1cb/0x210
 [<ffffffff810130ea>] ? sysret_check+0x2e/0x69
 [<ffffffff8115ee31>] sys_ioctl+0x81/0xa0
 [<ffffffff810130b2>] system_call_fastpath+0x16/0x1b
Sched Debug Version: v0.09, 2.6.32.11+drm33.2-lockdep #1
now at 57428828.058812 msecs
  .jiffies                                 : 4300680178
  .sysctl_sched_latency                    : 15.000000
  .sysctl_sched_min_granularity            : 3.000000
  .sysctl_sched_wakeup_granularity         : 3.000000
  .sysctl_sched_child_runs_first           : 0.000000
  .sysctl_sched_features                   : 15834235

cpu#0, 1994.897 MHz
  .nr_running                    : 0
  .load                          : 0
  .nr_switches                   : 18427266
  .nr_load_updates               : 2232846
  .nr_uninterruptible            : 11
  .next_balance                  : 4300.680179
  .curr->pid                     : 0
  .clock                         : 3197629.085735
  .cpu_load[0]                   : 0
  .cpu_load[1]                   : 128
  .cpu_load[2]                   : 144
  .cpu_load[3]                   : 98
  .cpu_load[4]                   : 56
  .yld_count                     : 2945
  .sched_switch                  : 0
  .sched_count                   : 18553315
  .sched_goidle                  : 5403160
  .avg_idle                      : 1000000
  .ttwu_count                    : 10155345
  .ttwu_local                    : 8878465
  .bkl_count                     : 357493

cfs_rq[0]:/
  .exec_clock                    : -49682217.806618
  .MIN_vruntime                  : 0.000001
  .min_vruntime                  : 6606440.049355
  .max_vruntime                  : 0.000001
  .spread                        : 0.000000
  .spread0                       : 0.000000
  .nr_running                    : 0
  .load                          : 0
  .nr_spread_over                : 176
  .shares                        : 0

rt_rq[0]:/
  .rt_nr_running                 : 0
  .rt_throttled                  : 0
  .rt_time                       : 0.000000
  .rt_runtime                    : 950.000000

runnable tasks:
            task   PID         tree-key  switches  prio     exec-runtime         sum-exec        sum-sleep
----------------------------------------------------------------------------------------------------------

cpu#1, 1994.897 MHz
  .nr_running                    : 1
  .load                          : 1024
  .nr_switches                   : 17874678
  .nr_load_updates               : 1895603
  .nr_uninterruptible            : -2
  .next_balance                  : 4300.680134
  .curr->pid                     : 0
  .clock                         : 3197636.559000
  .cpu_load[0]                   : 0
  .cpu_load[1]                   : 0
  .cpu_load[2]                   : 0
  .cpu_load[3]                   : 5
  .cpu_load[4]                   : 18
  .yld_count                     : 1125
  .sched_switch                  : 0
  .sched_count                   : 17966503
  .sched_goidle                  : 4068025
  .avg_idle                      : 1000000
  .ttwu_count                    : 10108222
  .ttwu_local                    : 8802277
  .bkl_count                     : 426829

cfs_rq[1]:/
  .exec_clock                    : 7392977.460050
  .MIN_vruntime                  : 7474730.754408
  .min_vruntime                  : 7474737.304292
  .max_vruntime                  : 7474730.754408
  .spread                        : 0.000000
  .spread0                       : 868297.254937
  .nr_running                    : 1
  .load                          : 1024
  .nr_spread_over                : 416
  .shares                        : 0

rt_rq[1]:/
  .rt_nr_running                 : 0
  .rt_throttled                  : 0
  .rt_time                       : 0.000000
  .rt_runtime                    : 950.000000

runnable tasks:
            task   PID         tree-key  switches  prio     exec-runtime         sum-exec        sum-sleep
----------------------------------------------------------------------------------------------------------
        events/1  9930   7474730.754408      7663   120   7474730.754408       188.832007   3204704.243375 /

cpu#2, 1994.897 MHz
  .nr_running                    : 0
  .load                          : 0
  .nr_switches                   : 9618829
  .nr_load_updates               : 1524748
  .nr_uninterruptible            : -2
  .next_balance                  : 4300.680034
  .curr->pid                     : 0
  .clock                         : 3197319.342582
  .cpu_load[0]                   : 0
  .cpu_load[1]                   : 0
  .cpu_load[2]                   : 0
  .cpu_load[3]                   : 0
  .cpu_load[4]                   : 24
  .yld_count                     : 1540
  .sched_switch                  : 0
  .sched_count                   : 9681726
  .sched_goidle                  : 2680795
  .avg_idle                      : 1000000
  .ttwu_count                    : 5048849
  .ttwu_local                    : 3969779
  .bkl_count                     : 382413

cfs_rq[2]:/
  .exec_clock                    : 7259629.523587
  .MIN_vruntime                  : 0.000001
  .min_vruntime                  : 7214250.834877
  .max_vruntime                  : 0.000001
  .spread                        : 0.000000
  .spread0                       : 607810.785522
  .nr_running                    : 0
  .load                          : 0
  .nr_spread_over                : 28
  .shares                        : 0

rt_rq[2]:/
  .rt_nr_running                 : 0
  .rt_throttled                  : 0
  .rt_time                       : 0.000000
  .rt_runtime                    : 950.000000

runnable tasks:
            task   PID         tree-key  switches  prio     exec-runtime         sum-exec        sum-sleep
----------------------------------------------------------------------------------------------------------

cpu#3, 1994.897 MHz
  .nr_running                    : 0
  .load                          : 0
  .nr_switches                   : 7525816
  .nr_load_updates               : 1194790
  .nr_uninterruptible            : -5
  .next_balance                  : 4300.680149
  .curr->pid                     : 0
  .clock                         : 3197632.876998
  .cpu_load[0]                   : 0
  .cpu_load[1]                   : 0
  .cpu_load[2]                   : 0
  .cpu_load[3]                   : 0
  .cpu_load[4]                   : 0
  .yld_count                     : 2954
  .sched_switch                  : 0
  .sched_count                   : 7572405
  .sched_goidle                  : 2481840
  .avg_idle                      : 1000000
  .ttwu_count                    : 3946892
  .ttwu_local                    : 2965997
  .bkl_count                     : 231864

cfs_rq[3]:/
  .exec_clock                    : 4714162.146732
  .MIN_vruntime                  : 0.000001
  .min_vruntime                  : 5116767.758952
  .max_vruntime                  : 0.000001
  .spread                        : 0.000000
  .spread0                       : -1489672.290403
  .nr_running                    : 0
  .load                          : 0
  .nr_spread_over                : 213
  .shares                        : 0

rt_rq[3]:/
  .rt_nr_running                 : 0
  .rt_throttled                  : 0
  .rt_time                       : 0.000000
  .rt_runtime                    : 950.000000

runnable tasks:
            task   PID         tree-key  switches  prio     exec-runtime         sum-exec        sum-sleep
----------------------------------------------------------------------------------------------------------

SysRq : Show Locks Held

Showing all locks held in the system:
3 locks held by i915/315:
 #0:  (i915){+.+...}, at: [<ffffffff8108075b>] worker_thread+0x1cb/0x3d0
 #1:  (&dev_priv->idle_work){+.+...}, at: [<ffffffff8108075b>] worker_thread+0x1cb/0x3d0
 #2:  (&dev->struct_mutex){+.+.+.}, at: [<ffffffffa00d2032>] intel_idle_update+0x62/0x1d0 [i915]
1 lock held by Xorg/1194:
 #0:  (&dev->struct_mutex){+.+.+.}, at: [<ffffffffa00bfde0>] i915_gem_throttle_ioctl+0x40/0x90 [i915]
1 lock held by getty/1276:
 #0:  (&tty->atomic_read_lock){+.+.+.}, at: [<ffffffff8133c9ce>] n_tty_read+0x4be/0x980
1 lock held by getty/1281:
 #0:  (&tty->atomic_read_lock){+.+.+.}, at: [<ffffffff8133c9ce>] n_tty_read+0x4be/0x980
1 lock held by getty/1291:
 #0:  (&tty->atomic_read_lock){+.+.+.}, at: [<ffffffff8133c9ce>] n_tty_read+0x4be/0x980
1 lock held by getty/1292:
 #0:  (&tty->atomic_read_lock){+.+.+.}, at: [<ffffffff8133c9ce>] n_tty_read+0x4be/0x980
1 lock held by getty/1295:
 #0:  (&tty->atomic_read_lock){+.+.+.}, at: [<ffffffff8133c9ce>] n_tty_read+0x4be/0x980
1 lock held by getty/1804:
 #0:  (&tty->atomic_read_lock){+.+.+.}, at: [<ffffffff8133c9ce>] n_tty_read+0x4be/0x980
1 lock held by bash/2062:
 #0:  (&tty->atomic_read_lock){+.+.+.}, at: [<ffffffff8133c9ce>] n_tty_read+0x4be/0x980
1 lock held by bash/2183:
 #0:  (&tty->atomic_read_lock){+.+.+.}, at: [<ffffffff8133c9ce>] n_tty_read+0x4be/0x980
1 lock held by crx/12841:
 #0:  (&dev->struct_mutex){+.+.+.}, at: [<ffffffffa00c407f>] i915_gem_do_execbuffer+0x29f/0x14a0 [i915]

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