Staging: udlfb: Add functions to expose sysfs metrics and controls

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Add sysfs controls for edid and performance metrics

There are 8 new files exposed in /sys/class/graphics/fb*

edid - returns 128 byte edid blog, suitable for parsing with parse-edid
metrics_bytes_identical
metrics_bytes_rendered
metrics_bytes_sent
metrics_cpu_kcycles_used
metrics_misc
and metrics_reset, which resets all perf metrics to zero

The 6 perf metrics are of type atomic_t.
So these metrics return precise results for short benchmarks, but
any test approx a minute or longer runtime may roll over.

Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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Bernie Thompson 2010-02-15 06:46:08 -08:00 • committed by Greg Kroah-Hartman

parent 4574203f45

commit 7d9485e2c5

2 changed files with 269 additions and 0 deletions

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251

drivers/staging/udlfb/udlfb.c

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18

drivers/staging/udlfb/udlfb.h

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