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drm: i915: Use nsec based interfaces

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Use ktime_get_raw_ns() and get rid of the back and forth timespec
conversions.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
Thomas Gleixner
2014-07-16 21:05:06 +00:00
committed by John Stultz
parent f519b1a2e0
commit 5ed0bdf21a
3 changed files with 18 additions and 29 deletions
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33
drivers/gpu/drm/i915/i915_gem.c
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@@ -1149,16 +1149,16 @@ static bool can_wait_boost(struct drm_i915_file_private *file_priv)
static int __wait_seqno(struct intel_engine_cs *ring, u32 seqno,
unsigned reset_counter,
bool interruptible,
struct timespec *timeout,
s64 *timeout,
struct drm_i915_file_private *file_priv)
{
struct drm_device *dev = ring->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
const bool irq_test_in_progress =
ACCESS_ONCE(dev_priv->gpu_error.test_irq_rings) & intel_ring_flag(ring);
struct timespec before, now;
DEFINE_WAIT(wait);
unsigned long timeout_expire;
s64 before, now;
int ret;
WARN(dev_priv->pm.irqs_disabled, "IRQs disabled\n");
@@ -1166,7 +1166,7 @@ static int __wait_seqno(struct intel_engine_cs *ring, u32 seqno,
if (i915_seqno_passed(ring->get_seqno(ring, true), seqno))
return 0;
timeout_expire = timeout ? jiffies + timespec_to_jiffies_timeout(timeout) : 0;
timeout_expire = timeout ? jiffies + nsecs_to_jiffies((u64)*timeout) : 0;
if (INTEL_INFO(dev)->gen >= 6 && can_wait_boost(file_priv)) {
gen6_rps_boost(dev_priv);
@@ -1181,7 +1181,7 @@ static int __wait_seqno(struct intel_engine_cs *ring, u32 seqno,
/* Record current time in case interrupted by signal, or wedged */
trace_i915_gem_request_wait_begin(ring, seqno);
getrawmonotonic(&before);
before = ktime_get_raw_ns();
for (;;) {
struct timer_list timer;
@@ -1230,7 +1230,7 @@ static int __wait_seqno(struct intel_engine_cs *ring, u32 seqno,
destroy_timer_on_stack(&timer);
}
}
getrawmonotonic(&now);
now = ktime_get_raw_ns();
trace_i915_gem_request_wait_end(ring, seqno);
if (!irq_test_in_progress)
@@ -1239,10 +1239,9 @@ static int __wait_seqno(struct intel_engine_cs *ring, u32 seqno,
finish_wait(&ring->irq_queue, &wait);
if (timeout) {
struct timespec sleep_time = timespec_sub(now, before);
*timeout = timespec_sub(*timeout, sleep_time);
if (!timespec_valid(timeout)) /* i.e. negative time remains */
set_normalized_timespec(timeout, 0, 0);
s64 tres = *timeout - (now - before);
*timeout = tres < 0 ? 0 : tres;
}
return ret;
@@ -2753,16 +2752,10 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
struct drm_i915_gem_wait *args = data;
struct drm_i915_gem_object *obj;
struct intel_engine_cs *ring = NULL;
struct timespec timeout_stack, *timeout = NULL;
unsigned reset_counter;
u32 seqno = 0;
int ret = 0;
if (args->timeout_ns >= 0) {
timeout_stack = ns_to_timespec(args->timeout_ns);
timeout = &timeout_stack;
}
ret = i915_mutex_lock_interruptible(dev);
if (ret)
return ret;
@@ -2787,9 +2780,9 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
goto out;
/* Do this after OLR check to make sure we make forward progress polling
* on this IOCTL with a 0 timeout (like busy ioctl)
* on this IOCTL with a timeout <=0 (like busy ioctl)
*/
if (!args->timeout_ns) {
if (args->timeout_ns <= 0) {
ret = -ETIME;
goto out;
}
@@ -2798,10 +2791,8 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter);
mutex_unlock(&dev->struct_mutex);
ret = __wait_seqno(ring, seqno, reset_counter, true, timeout, file->driver_priv);
if (timeout)
args->timeout_ns = timespec_to_ns(timeout);
return ret;
return __wait_seqno(ring, seqno, reset_counter, true, &args->timeout_ns,
file->driver_priv);
out:
drm_gem_object_unreference(&obj->base);