diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2017-11-04 22:20:08 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2017-11-06 10:21:39 +0100 |
| commit | de7e8bd01a241103c141801479e0bda786b76290 (patch) | |
| tree | e24d05092803beea2f96a6ac1b2350f4d19e4be0 /drivers/gpu/drm/via/via_drv.h | |
| parent | 0338f0d0d70a26adc2236148bb5a78f1fa8c7f99 (diff) | |
drm: via: use ktime_get() instead of do_gettimeofday
We want to remove uses of do_gettimeofday() from the kernel since the
resulting timeval structure overflows in 2038. This is not a problem for
this particular use, but do_gettimeofday() is also not an appropriate
method for measuring time intervals, since it requires a conversion into
microseconds and is complicated to work with.
ktime_get() is a better replacement, as it works with the monontonic
kernel timebase and requires a minimum of computation.
I'm slightly changing the output from microseconds to nanoseconds here,
to avoid introducing a new division operation. This should be fine
since the value is only used for debugging.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20171104212131.2939989-1-arnd@arndb.de
Diffstat (limited to 'drivers/gpu/drm/via/via_drv.h')
| -rw-r--r-- | drivers/gpu/drm/via/via_drv.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/via/via_drv.h b/drivers/gpu/drm/via/via_drv.h index 9873942ca8f4..6d1ae834484c 100644 --- a/drivers/gpu/drm/via/via_drv.h +++ b/drivers/gpu/drm/via/via_drv.h @@ -74,9 +74,9 @@ typedef struct drm_via_private { volatile uint32_t *last_pause_ptr; volatile uint32_t *hw_addr_ptr; drm_via_ring_buffer_t ring; - struct timeval last_vblank; + ktime_t last_vblank; int last_vblank_valid; - unsigned usec_per_vblank; + ktime_t nsec_per_vblank; atomic_t vbl_received; drm_via_state_t hc_state; char pci_buf[VIA_PCI_BUF_SIZE]; |