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author | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2015-08-18 13:40:05 +0200 |
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committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2015-11-02 15:50:24 +0100 |
commit | f935675f0c07f87da2facc4c144d511e6da48240 (patch) | |
tree | c8deef65bc14dcf8bcf241c9de226a9d13599436 /drivers/firewire/init_ohci1394_dma.c | |
parent | 5008e874edd34705be433bfa74bd29908182b36e (diff) |
drm/i915: Change locking for struct_mutex, v3.
struct_mutex is being locked for every plane in intel_prepare_plane_fb
and intel_cleanup_plane_fb.
Require the caller to hold the mutex, and only acquire the mutex for
each helper call. This way the lock only needs to be acquired
twice in ->atomic_commit(). Once for pinning new framebuffers at the
start, the second time for unpinning old framebuffer.
Changes since v1:
- Use mutex_lock_interruptible instead of i915 variant,
to prevent a deadlock when called from the reset code.
Changes since v2:
- Clarify struct_mutex is locked by the caller.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com> #v1
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/firewire/init_ohci1394_dma.c')
0 files changed, 0 insertions, 0 deletions