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| author | Siarhei Vishniakou <[email protected]> | 2022-07-08 21:59:23 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <[email protected]> | 2022-07-08 22:02:00 -0700 |
| commit | 2a96271fb66c499e4a89d76a89d3d01170c10bef (patch) | |
| tree | 6c9b0c307da7c342dc5e6fb754d59057aa684a22 /tools/perf/util/scripting-engines/trace-event-perl.c | |
| parent | 3de93e6ed2df6521e3f68fb45eec0bb4fe1bb218 (diff) | |
Input: document the units for resolution of size axes
Today, the resolution of size axes is not documented. As a result, it's
not clear what the canonical interpretation of this value should be. On
Android, there is a need to calculate the size of the touch ellipse in
physical units (millimeters).
After reviewing linux source, it turned out that most of the existing
usages are already interpreting this value as "units/mm". This
documentation will make it explicit. This will help device
implementations with correctly following the linux specs, and will
ensure that the devices will work on Android without needing further
customized parameters for scaling of major/minor values.
Signed-off-by: Siarhei Vishniakou <[email protected]>
Reviewed-by: Jeff LaBundy <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-perl.c')
0 files changed, 0 insertions, 0 deletions