From 5ed0bdf21a85d78e04f89f15ccf227562177cbd9 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 16 Jul 2014 21:05:06 +0000 Subject: [PATCH] drm: i915: Use nsec based interfaces Use ktime_get_raw_ns() and get rid of the back and forth timespec conversions. Signed-off-by: Thomas Gleixner Acked-by: Daniel Vetter Signed-off-by: John Stultz --- drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/i915_gem.c | 33 ++++++++++++--------------------- drivers/gpu/drm/i915/intel_pm.c | 12 +++++------- 3 files changed, 18 insertions(+), 29 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 374f964323ad..1f7700897dfc 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -931,7 +931,7 @@ struct intel_ilk_power_mgmt { unsigned long last_time1; unsigned long chipset_power; u64 last_count2; - struct timespec last_time2; + u64 last_time2; unsigned long gfx_power; u8 corr; diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index f36126383d26..74531caa5191 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -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); diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index ee72807069e4..f1233f544f3e 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2993,7 +2993,7 @@ static void ironlake_enable_drps(struct drm_device *dev) I915_READ(0x112e0); dev_priv->ips.last_time1 = jiffies_to_msecs(jiffies); dev_priv->ips.last_count2 = I915_READ(0x112f4); - getrawmonotonic(&dev_priv->ips.last_time2); + dev_priv->ips.last_time2 = ktime_get_raw_ns(); spin_unlock_irq(&mchdev_lock); } @@ -4314,18 +4314,16 @@ static u16 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid) static void __i915_update_gfx_val(struct drm_i915_private *dev_priv) { - struct timespec now, diff1; - u64 diff; - unsigned long diffms; + u64 now, diff, diffms; u32 count; assert_spin_locked(&mchdev_lock); - getrawmonotonic(&now); - diff1 = timespec_sub(now, dev_priv->ips.last_time2); + now = ktime_get_raw_ns(); + diffms = now - dev_priv->ips.last_time2; + do_div(diffms, NSEC_PER_MSEC); /* Don't divide by 0 */ - diffms = diff1.tv_sec * 1000 + diff1.tv_nsec / 1000000; if (!diffms) return;