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| author | Chris Wilson | 2009-08-25 12:15:50 +0200 |
|---|---|---|
| committer | Chris Wilson | 2009-09-23 02:05:21 +0200 |
| commit | 1c5d22f76dc721f3acb7a3dadc657a221e487fb7 (patch) | |
| tree | 99a69f1be4f10d1e38af2c5ece4b5905f7a5701a /drivers/gpu/drm/i915/i915_irq.c | |
| parent | drm/i915: framebuffer compression for GM45+ (diff) | |
| download | kernel-qcow2-linux-1c5d22f76dc721f3acb7a3dadc657a221e487fb7.tar.gz kernel-qcow2-linux-1c5d22f76dc721f3acb7a3dadc657a221e487fb7.tar.xz kernel-qcow2-linux-1c5d22f76dc721f3acb7a3dadc657a221e487fb7.zip | |
drm/i915: Add tracepoints
By adding tracepoint equivalents for WATCH_BUF/EXEC we are able to monitor
the lifetimes of objects, requests and significant events. These events can
then be probed using the tracing frameworks, such as systemtap and, in
particular, perf.
For example to record the stack trace for every GPU stall during a run, use
$ perf record -e i915:i915_gem_request_wait_begin -c 1 -g
And
$ perf report
to view the results.
[Updated to fix compilation issues caused.]
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Ben Gamari <bgamari@gmail.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 13e664ddb611..4dfeec7cdd42 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -31,6 +31,7 @@ #include "drm.h" #include "i915_drm.h" #include "i915_drv.h" +#include "i915_trace.h" #include "intel_drv.h" #define MAX_NOPID ((u32)~0) @@ -279,7 +280,9 @@ irqreturn_t igdng_irq_handler(struct drm_device *dev) } if (gt_iir & GT_USER_INTERRUPT) { - dev_priv->mm.irq_gem_seqno = i915_get_gem_seqno(dev); + u32 seqno = i915_get_gem_seqno(dev); + dev_priv->mm.irq_gem_seqno = seqno; + trace_i915_gem_request_complete(dev, seqno); DRM_WAKEUP(&dev_priv->irq_queue); } @@ -622,7 +625,9 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) } if (iir & I915_USER_INTERRUPT) { - dev_priv->mm.irq_gem_seqno = i915_get_gem_seqno(dev); + u32 seqno = i915_get_gem_seqno(dev); + dev_priv->mm.irq_gem_seqno = seqno; + trace_i915_gem_request_complete(dev, seqno); DRM_WAKEUP(&dev_priv->irq_queue); dev_priv->hangcheck_count = 0; mod_timer(&dev_priv->hangcheck_timer, jiffies + DRM_I915_HANGCHECK_PERIOD); |