Linux / Drivers / Dma
Unit Size

The distribution of size of units (measured in lines of code).

Intro
  • Unit size measurements show the distribution of size of units of code (methods, functions...).
  • Units are classified in four categories based on their size (lines of code): 1-20 (small units), 20-50 (medium size units), 51-100 (long units), 101+ (very long units).
  • You should aim at keeping units small (< 20 lines). Long units may become "bloaters", code that have increased to such gargantuan proportions that they are hard to work with.
Learn more...
Unit Size Overall
  • There are 3,429 units with 66,987 lines of code in units (61.9% of code).
    • 62 very long units (8,558 lines of code)
    • 168 long units (11,608 lines of code)
    • 738 medium size units (22,476 lines of code)
    • 1,013 small units (15,034 lines of code)
    • 1,448 very small units (9,311 lines of code)
12% | 17% | 33% | 22% | 13%
Legend:
101+
51-100
21-50
11-20
1-10
Unit Size per Extension
101+
51-100
21-50
11-20
1-10
c12% | 17% | 33% | 22% | 13%
h0% | 0% | 0% | 34% | 65%
Unit Size per Logical Component
primary logical decomposition
101+
51-100
21-50
11-20
1-10
ROOT12% | 15% | 34% | 23% | 13%
ti23% | 15% | 33% | 14% | 12%
qcom16% | 15% | 40% | 19% | 7%
ppc4xx17% | 38% | 24% | 14% | 6%
xilinx9% | 18% | 37% | 19% | 14%
ioat11% | 28% | 21% | 21% | 16%
mediatek17% | 11% | 30% | 24% | 16%
sh5% | 19% | 28% | 27% | 18%
dw-edma12% | 27% | 27% | 22% | 10%
dw12% | 16% | 18% | 24% | 27%
ipu10% | 16% | 45% | 19% | 8%
lgm14% | 0% | 33% | 37% | 14%
dw-axi-dmac12% | 14% | 28% | 25% | 18%
idxd0% | 12% | 42% | 24% | 20%
fsl-dpaa2-qdma0% | 34% | 25% | 29% | 10%
ptdma0% | 37% | 4% | 45% | 12%
bestcomm0% | 55% | 18% | 4% | 21%
sf-pdma0% | 15% | 27% | 32% | 24%
hsu0% | 0% | 59% | 21% | 19%
Alternative Visuals
Longest Units
Top 50 longest units
Unit# linesMcCabe index# params
309 48 1
233 35 2
219 44 1
206 37 1
203 50 1
189 11 10
181 44 1
177 25 1
167 33 1
159 25 1
159 29 1
158 38 1
154 27 1
153 24 2
153 23 1
151 22 1
148 25 2
148 22 1
144 33 1
142 19 1
140 15 1
139 30 3
138 22 1
138 29 1
136 30 1
135 9 11
134 16 5
133 16 1
133 23 1
128 17 1
127 35 1
125 20 1
124 19 1
124 23 1
123 19 1
123 12 1
122 15 7
122 26 1
120 14 1
120 17 1
119 23 1
118 15 1
118 21 1
117 26 1
116 28 2
115 25 1
115 14 1
114 19 1
112 13 3
111 18 1