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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-12-04 11:12:54 +0100 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2014-12-05 15:20:24 +0200 |
| commit | 7bd0e226e313547add65c7e4b0ecf65cb981a3c6 (patch) | |
| tree | fe3e62205d3e573637a7098c51f3b47610ba1e8b | |
| parent | af15d2ce5d497ba6535dead782cfadbcc83d90fe (diff) | |
| download | linux-7bd0e226e313547add65c7e4b0ecf65cb981a3c6.tar.bz2 | |
drm/i915: compute wait_ioctl timeout correctly
We've lost the +1 required for correct timeouts in
commit 5ed0bdf21a85d78e04f89f15ccf227562177cbd9
Author: Thomas Gleixner <tglx@linutronix.de>
Date: Wed Jul 16 21:05:06 2014 +0000
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 <tglx@linutronix.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: John Stultz <john.stultz@linaro.org>
So fix this up by reinstating our handrolled _timeout function. While
at it bother with handling MAX_JIFFIES.
v2: Convert to usecs (we don't care about the accuracy anyway) first
to avoid overflow issues Dave Gordon spotted.
v3: Drop the explicit MAX_JIFFY_OFFSET check, usecs_to_jiffies should
take care of that already. It might be a bit too enthusiastic about it
though.
v4: Chris has a much nicer color, so use his implementation.
This requires to export nsec_to_jiffies from time.c.
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Gordon <david.s.gordon@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82749
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Acked-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 3 | ||||
| -rw-r--r-- | kernel/time/time.c | 1 |
3 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index bb1892d72efe..be910d249ea1 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -3032,6 +3032,11 @@ static inline unsigned long msecs_to_jiffies_timeout(const unsigned int m) return min_t(unsigned long, MAX_JIFFY_OFFSET, j + 1); } +static inline unsigned long nsecs_to_jiffies_timeout(const u64 n) +{ + return min_t(u64, MAX_JIFFY_OFFSET, nsecs_to_jiffies64(n) + 1); +} + static inline unsigned long timespec_to_jiffies_timeout(const struct timespec *value) { diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index d2ba315f4c92..820bc984082e 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1227,7 +1227,8 @@ int __i915_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 + nsecs_to_jiffies((u64)*timeout) : 0; + timeout_expire = timeout ? + jiffies + nsecs_to_jiffies_timeout((u64)*timeout) : 0; if (INTEL_INFO(dev)->gen >= 6 && ring->id == RCS && can_wait_boost(file_priv)) { gen6_rps_boost(dev_priv); diff --git a/kernel/time/time.c b/kernel/time/time.c index a9ae20fb0b11..8fae82ca5cbf 100644 --- a/kernel/time/time.c +++ b/kernel/time/time.c @@ -745,6 +745,7 @@ u64 nsecs_to_jiffies64(u64 n) return div_u64(n * 9, (9ull * NSEC_PER_SEC + HZ / 2) / HZ); #endif } +EXPORT_SYMBOL(nsecs_to_jiffies64); /** * nsecs_to_jiffies - Convert nsecs in u64 to jiffies |