1. 22 Feb, 2018 11 commits
  2. 21 Feb, 2018 6 commits
  3. 20 Feb, 2018 9 commits
  4. 19 Feb, 2018 7 commits
    • Chris Wilson's avatar
      drm/i915/: Initialise trans_min for skl_compute_transition_wm() · be3fa668
      Chris Wilson authored
      clang spots
      
      drivers/gpu/drm/i915/intel_pm.c:4655:6: warning: variable 'trans_min' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
              if (INTEL_GEN(dev_priv) >= 10)
      
      but fortunately for us we skip the function unless on a gen10+ device.
      However, to keep the function generic in case we do want to re-enable it
      for gen9 again, initialise trans_min to 0.
      
      References: ca47667f ("drm/i915/gen10: Calculate and enable transition WM")
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Cc: Mahesh Kumar <mahesh1.kumar@intel.com>
      Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
      Cc: Jani Nikula <jani.nikula@linux.intel.com>
      Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
      Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
      Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20171115105036.1094-3-chris@chris-wilson.co.ukReviewed-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
      be3fa668
    • Chris Wilson's avatar
      drm/i915: Clear the in-use marker on execbuf failure · ed2f3532
      Chris Wilson authored
      If we fail to unbind the vma (due to a signal on an active buffer that
      needs to be moved for the next execbuf), then we need to clear the
      persistent tracking state we setup for this execbuf.
      
      Fixes: c7c6e46f ("drm/i915: Convert execbuf to use struct-of-array packing for critical fields")
      Testcase: igt/gem_fenced_exec_thrash/no-spare-fences-busy*
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
      Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
      Cc: <stable@vger.kernel.org> # v4.14+
      Reviewed-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20180219140144.24004-1-chris@chris-wilson.co.uk
      ed2f3532
    • Chris Wilson's avatar
      drm/i915: Prune gen8_gt_irq_handler · 2e4a5b25
      Chris Wilson authored
      The compiler is not automatically caching the i915->regs address inside
      a register and emitting a load for every mmio access. For simple
      functions like gen8_gt_irq_handler that are already using the raw
      accessors, we can open-code them for substantial savings:
      
      add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-83 (-83)
      Function                                     old     new   delta
      gen8_gt_irq_handler                          290     266     -24
      gen8_gt_irq_ack                              181     122     -59
      Total: Before=954637, After=954554, chg -0.01%
      
      v2: Add raw_reg_read/raw_reg_write.
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
      Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@linux.intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20180219100926.16554-1-chris@chris-wilson.co.uk
      2e4a5b25
    • Chris Wilson's avatar
      drm/i915: Track GT interrupt handling using the master iir · f0fd96f5
      Chris Wilson authored
      Keep the master iir and use it to reduce the number of reads and writes
      to the GT iir array, i.e. only the bits marked as set by the master iir
      are valid inside GT iir array and will be handled during the interrupt.
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
      Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
      Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@linux.intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20180215073713.26985-1-chris@chris-wilson.co.uk
      f0fd96f5
    • Chris Wilson's avatar
      drm/i915: Remove WARN_ONCE for failing to pm_runtime_if_in_use · acb79148
      Chris Wilson authored
      As the driver is called to handle circumstances beyond it's control, we
      cannot assume that the pm_runtime core is happy to see us. For example,
      if we are called from shrink_slab to free up our pages during suspend,
      rpm may be disabled and pm_runtime_if_in_use() decides to fail with
      -EINVAL rather than simply say no. This is expected to happen, so don't
      warn.  For example,
      
      [  217.429228] Suspending console(s) (use no_console_suspend to debug)
      [  217.557179] sd 0:0:0:0: [sda] Synchronizing SCSI cache
      [  217.559399] sd 0:0:0:0: [sda] Stopping disk
      [  218.661567] i915 0000:00:02.0: Resetting chip after gpu hang
      [  219.523879] ------------[ cut here ]------------
      [  219.524474] pm_runtime_get_if_in_use() failed: -22
      [  219.524817] WARNING: CPU: 1 PID: 14 at drivers/gpu/drm/i915/intel_runtime_pm.c:3351 intel_runtime_pm_get_if_in_use+0xe3/0x150 [i915]
      [  219.524836] Modules linked in: vgem i915 snd_hda_codec_realtek snd_hda_codec_generic coretemp snd_hda_intel snd_hda_codec r8169 lpc_ich snd_hwdep mii snd_hda_core snd_pcm prime_numbers
      [  219.525054] CPU: 1 PID: 14 Comm: cpuhp/1 Tainted: G     U           4.16.0-rc1-g740f57c54ecf-kasan_6+ #1
      [  219.525070] Hardware name:  /D510MO, BIOS MOPNV10J.86A.0311.2010.0802.2346 08/02/2010
      [  219.525294] RIP: 0010:intel_runtime_pm_get_if_in_use+0xe3/0x150 [i915]
      [  219.525313] RSP: 0018:ffff880018f5edf8 EFLAGS: 00010286
      [  219.525344] RAX: dffffc0000000008 RBX: ffff880007fc0000 RCX: 0000000000000000
      [  219.525361] RDX: 0000000000000001 RSI: ffffffff850609c0 RDI: ffffffff872992a0
      [  219.525377] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
      [  219.525394] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880007fc0000
      [  219.525411] R13: ffff880018f5f0f8 R14: ffff880007fc8de8 R15: ffff880018f5f0f0
      [  219.525429] FS:  0000000000000000(0000) GS:ffff880019c80000(0000) knlGS:0000000000000000
      [  219.525446] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [  219.525463] CR2: 0000564df7897e86 CR3: 0000000000d7c000 CR4: 00000000000006e0
      [  219.525478] Call Trace:
      [  219.525734]  i915_gem_shrink+0x841/0xb50 [i915]
      [  219.525802]  ? debug_check_no_locks_freed+0x2a0/0x2a0
      [  219.525842]  ? trace_hardirqs_on_thunk+0x1a/0x1c
      [  219.526083]  ? i915_gem_shrinker_count+0x2f0/0x2f0 [i915]
      [  219.526131]  ? lock_acquire+0x138/0x3c0
      [  219.526157]  ? lock_acquire+0x138/0x3c0
      [  219.526391]  ? shrinker_lock+0x49/0x210 [i915]
      [  219.526465]  ? mutex_trylock+0x15c/0x1a0
      [  219.526694]  ? shrinker_lock+0x49/0x210 [i915]
      [  219.526969]  ? i915_gem_shrinker_scan+0xc4/0x320 [i915]
      [  219.527200]  i915_gem_shrinker_scan+0xc4/0x320 [i915]
      [  219.527448]  ? i915_gem_shrinker_vmap+0x3a0/0x3a0 [i915]
      [  219.527533]  shrink_slab.part.18+0x2d0/0x8d0
      [  219.527613]  ? unregister_shrinker+0x1f0/0x1f0
      [  219.527668]  ? mem_cgroup_iter+0x37d/0xc50
      [  219.527728]  shrink_node+0x882/0xbe0
      [  219.527847]  ? shrink_node_memcg+0x11c0/0x11c0
      [  219.527882]  ? mark_held_locks+0xa8/0xf0
      [  219.527931]  ? trace_hardirqs_on_caller+0x33f/0x590
      [  219.527961]  ? ktime_get+0xad/0x140
      [  219.528015]  do_try_to_free_pages+0x2d3/0xd70
      [  219.528099]  ? allow_direct_reclaim.part.23+0x1d0/0x1d0
      [  219.528132]  ? shrink_node+0xbe0/0xbe0
      [  219.528213]  try_to_free_pages+0x1cd/0x570
      [  219.528257]  ? do_try_to_free_pages+0xd70/0xd70
      [  219.528355]  __alloc_pages_nodemask+0xadf/0x2110
      [  219.528423]  ? unwind_next_frame+0x870/0x1970
      [  219.528465]  ? deref_stack_reg+0x97/0xc0
      [  219.528503]  ? gfp_pfmemalloc_allowed+0x150/0x150
      [  219.528539]  ? register_sched_domain_sysctl+0x23a/0x1b90
      [  219.528588]  ? unwind_next_frame+0x138/0x1970
      [  219.528619]  ? kthread+0x30a/0x3d0
      [  219.528677]  ? __read_once_size_nocheck.constprop.4+0x10/0x10
      [  219.528698]  ? deref_stack_reg+0xc0/0xc0
      [  219.528762]  ? __save_stack_trace+0x6e/0xd0
      [  219.528822]  depot_save_stack+0x3bc/0x430
      [  219.528870]  kasan_kmalloc+0x142/0x170
      [  219.528912]  ? __kmalloc+0xf7/0x340
      [  219.528935]  ? register_sched_domain_sysctl+0x23a/0x1b90
      [  219.528957]  ? partition_sched_domains+0x4d4/0x840
      [  219.528978]  ? sched_cpu_deactivate+0x11b/0x150
      [  219.529001]  ? cpuhp_invoke_callback+0x160/0x15f0
      [  219.529023]  ? cpuhp_thread_fun+0x35e/0x710
      [  219.529044]  ? smpboot_thread_fn+0x50a/0x7f0
      [  219.529065]  ? kthread+0x30a/0x3d0
      [  219.529086]  ? ret_from_fork+0x24/0x50
      [  219.529141]  ? register_sched_domain_sysctl+0x23a/0x1b90
      [  219.529169]  ? register_sched_domain_sysctl+0x23a/0x1b90
      [  219.529198]  ? set_track+0x87/0x100
      [  219.529225]  ? init_object+0x6e/0x80
      [  219.529275]  ? ___slab_alloc.constprop.36+0x232/0x3e0
      [  219.529303]  ? ___slab_alloc.constprop.36+0x232/0x3e0
      [  219.529325]  ? register_sched_domain_sysctl+0x23a/0x1b90
      [  219.529410]  ? mark_held_locks+0xa8/0xf0
      [  219.529453]  ? register_sched_domain_sysctl+0x23a/0x1b90
      [  219.529479]  ? trace_hardirqs_on_caller+0x33f/0x590
      [  219.529532]  __kmalloc+0xf7/0x340
      [  219.529557]  ? register_sched_domain_sysctl+0x23a/0x1b90
      [  219.529604]  register_sched_domain_sysctl+0x23a/0x1b90
      [  219.529684]  ? sched_debug_show+0x20/0x20
      [  219.529713]  ? debug_object_activate+0x530/0x530
      [  219.529771]  ? rcu_lockdep_current_cpu_online+0xdc/0x130
      [  219.529802]  ? partition_sched_domains+0x4ae/0x840
      [  219.529825]  ? rcu_read_lock_sched_held+0x10f/0x130
      [  219.529875]  partition_sched_domains+0x4d4/0x840
      [  219.529955]  ? sched_init_domains+0x110/0x110
      [  219.529981]  ? __wait_rcu_gp+0x24f/0x390
      [  219.530054]  sched_cpu_deactivate+0x11b/0x150
      [  219.530086]  ? sched_cpu_activate+0x1e0/0x1e0
      [  219.530112]  ? __call_rcu.constprop.53+0x680/0x680
      [  219.530132]  ? call_rcu_bh+0x10/0x10
      [  219.530166]  ? debug_check_no_locks_freed+0x2a0/0x2a0
      [  219.530201]  ? trace_raw_output_rcu_utilization+0xa0/0xa0
      [  219.530267]  ? trace_raw_output_rcu_utilization+0xa0/0xa0
      [  219.530337]  ? rcu_lockdep_current_cpu_online+0xdc/0x130
      [  219.530370]  ? sched_cpu_activate+0x1e0/0x1e0
      [  219.530397]  cpuhp_invoke_callback+0x160/0x15f0
      [  219.530424]  ? lock_acquire+0x138/0x3c0
      [  219.530445]  ? lock_acquire+0x138/0x3c0
      [  219.530471]  ? cpuhp_thread_fun+0xaf/0x710
      [  219.530507]  ? pci_mmcfg_check_reserved+0x100/0x100
      [  219.530565]  cpuhp_thread_fun+0x35e/0x710
      [  219.530618]  ? cpuhp_complete_idle_dead+0x10/0x10
      [  219.530639]  smpboot_thread_fn+0x50a/0x7f0
      [  219.530678]  ? sort_range+0x20/0x20
      [  219.530709]  ? __kthread_parkme+0xba/0x1f0
      [  219.530739]  ? schedule+0x84/0x1a0
      [  219.530768]  ? __kthread_parkme+0xbf/0x1f0
      [  219.530805]  ? sort_range+0x20/0x20
      [  219.530831]  kthread+0x30a/0x3d0
      [  219.530859]  ? _kthread_create_on_node+0xb0/0xb0
      [  219.530900]  ret_from_fork+0x24/0x50
      [  219.530999] Code: 01 00 00 00 85 c0 74 4a 89 e8 5b 5d c3 80 3d 48 37 4e 00 00 75 f2 89 c6 48 c7 c7 40 f0 61 c0 c6 05 36 37 4e 00 01 e8 ed 2a e1 c2 <0f> ff eb d9 80 3d 3f 37 4e 00 00 75 94 48 c7 c7 60 e8 61 c0 c6
      [  219.531880] ---[ end trace 18ec0139488ea0c8 ]---
      [  219.607967] IRQ 16: no longer affine to CPU1
      [  219.670291] IRQ 24: no longer affine to CPU2
      [  219.701489] IRQ 8: no longer affine to CPU3
      [  219.701529] IRQ 9: no longer affine to CPU3
      [  219.701582] IRQ 18: no longer affine to CPU3
      [  219.701640] IRQ 25: no longer affine to CPU3
      [  219.743857]  cache: parent cpu1 should not be sleeping
      [  219.784549]  cache: parent cpu2 should not be sleeping
      [  219.816041]  cache: parent cpu3 should not be sleeping
      
      v2: Add Returns: information to intel_runtime_pm_get_if_in_use() kerneldoc.
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Cc: Imre Deak <imre.deak@intel.com>
      Reviewed-by: default avatarImre Deak <imre.deak@intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20180219125046.19363-1-chris@chris-wilson.co.uk
      acb79148
    • Mauro Carvalho Chehab's avatar
      drm: intel_dpio_phy: fix kernel-doc comments at nested struct · 41e1bd56
      Mauro Carvalho Chehab authored
      The in-lined comments for channel.port doesn't follow the syntax
      described at kernel-doc document, causing the following warning:
      
      	$ ./scripts/kernel-doc -none drivers/gpu/drm/i915/intel_dpio_phy.c
      	drivers/gpu/drm/i915/intel_dpio_phy.c:154: warning: Function parameter or member 'channel.port' not described in 'bxt_ddi_phy_info'
      
      While the best would be for the Kernel to deduce that from the
      context, supporting it is not trivial. So, let's just stick with
      the existing syntax.
      
      [Jani: depends on "scripts: kernel-doc: support in-line comments on
      nested structs/unions" to actually fix the warning.]
      Reported-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Reported-by: default avatarJani Nikula <jani.nikula@intel.com>
      Tested-by: default avatarJani Nikula <jani.nikula@intel.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
      Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/9ba9ac773f4f9e60770bd9169b0e46ac974d858a.1518788761.git.mchehab@s-opensource.com
      41e1bd56
    • Maarten Lankhorst's avatar
      drm/i915: Release connector iterator on a digital port conflict. · bd67a8c1
      Maarten Lankhorst authored
      Hitting the failure path through check_digital_port_conflicts triggers:
      
      ================================================
      WARNING: lock held when returning to user space!
      4.16.0-rc1-CI-kasan_1+ #1 Tainted: G        W
      ------------------------------------------------
      kms_3d/1439 is leaving the kernel with locks still held!
      1 lock held by kms_3d/1439:
       #0:  (drm_connector_list_iter){.+.+}, at: [<000000003745d183>] intel_atomic_check+0x1d9d/0x3ff0 [i915]
      
      Rearrange the code to have a single exit path through the unlock.
      Signed-off-by: default avatarMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
      Reported-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Link: https://patchwork.freedesktop.org/patch/msgid/20180215091425.42364-1-maarten.lankhorst@linux.intel.comReviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Reviewed-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
      bd67a8c1
  5. 16 Feb, 2018 3 commits
  6. 15 Feb, 2018 4 commits