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pybootchart: Avoid divide by zero

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Avoid a rare divide by zero error if there isn't data point spread.

[YOCTO #14547]

(From OE-Core rev: d7e36d01e87ddf89f76f164a0b7d98f597a53fa5)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie 2021-09-20 16:40:32 +01:00
parent e030167881
commit 7be05f5228
1 changed files with 4 additions and 1 deletions
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5
scripts/pybootchartgui/pybootchartgui/draw.py
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@ -267,7 +267,10 @@ def draw_chart(ctx, color, fill, chart_bounds, data, proc_tree, data_range):
# avoid divide by zero
if max_y == 0:
max_y = 1.0
xscale = float (chart_bounds[2]) / (max_x - x_shift)
if (max_x - x_shift):
xscale = float (chart_bounds[2]) / (max_x - x_shift)
else:
xscale = float (chart_bounds[2])
# If data_range is given, scale the chart so that the value range in
# data_range matches the chart bounds exactly.
# Otherwise, scale so that the actual data matches the chart bounds.