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strtod() is locale-dependent. The decimal conversion depends on the radix
character ('.' for some of us like myself) varies by locale. As the
kernel reports its values using the "C" locale, we need to switch to
that when parsing; and switch back before reporting to the user.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105712
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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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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