diff options
| author | Chris Wilson <[email protected]> | 2018-06-28 21:12:03 +0100 |
|---|---|---|
| committer | Chris Wilson <[email protected]> | 2018-06-28 22:55:02 +0100 |
| commit | 74093f3eccac232447ef95536c6a359ee7661650 (patch) | |
| tree | c21d5197ce25fe45e5fb8fed4629bf709cee9221 /include/linux/fpga/fpga-mgr.h | |
| parent | f7dc0157e4b5f23780559c6b71d3f7282f6c7f1b (diff) | |
drm/i915: Drop posting reads to flush master interrupts
We do not need to do a posting read of our uncached mmio write to
re-enable the master interrupt lines after handling an interrupt, so
don't. This saves us a slow UC read before we can process the interrupt,
most noticeable in execlists where any stalls imposes extra latency on
GPU command execution.
Signed-off-by: Chris Wilson <[email protected]>
Reviewed-by: Ville Syrjala <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Diffstat (limited to 'include/linux/fpga/fpga-mgr.h')
0 files changed, 0 insertions, 0 deletions