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Wire up to the RAPL PMU for GPU energy readings.
The only complication is that we have to add code to parse:
# cat /sys/devices/power/events/energy-gpu.scale
2.3283064365386962890625e-10
v2: Link with -lm.
v3: strtod can handle scientific notation, even though my initial
reading of the man page did not spot that. (Chris Wilson)
v4: Meson fix.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
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v2: Update for i915 changes.
v3: Use 1eN for large numbers. (Chris Wilson)
v4: Update for upstream engine class enum.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
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Various tool modules implement their owm PMU open wrapper which
can be replaced by calling the library one.
v2:
* Remove extra newline. (Chris Wilson)
* Commit msg.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
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Idea is to avoid duplication across multiple users in
upcoming patches.
v2: Commit message and use a separate library instead of piggy-
backing to libintel_tools. (Chris Wilson)
v3: Add Petri's meson build recipe.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Petri Latvala <petri.latvala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
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The power metter was not showing up due to an erroneous check for a
failure to open the i915 perf interface.
Reported-by: Marius Vlad <marius.c.vlad@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Found the bug, but still only read the msr once every second - mainly as
an exercise in handling different sample rates.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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