8679e52b96
Following patch adds a userspace util genprof which is able to convert the console printed traces to gmon.out file used by gprof & friends. The log2dress will replace the adresses in logfile with a line numbers. Change-Id: I9f716f3ff2522a24fbc844a1dd5e32ef49b540c5 Signed-off-by: Rudolf Marek <r.marek@assembler.cz> Reviewed-on: http://review.coreboot.org/179 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
31 lines
909 B
Text
31 lines
909 B
Text
Function tracing
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----------------
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Enable CONFIG_TRACE in debug menu. Run the compiled image on target. You will get
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a log with a lot of lines like:
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...
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~0x001072e8(0x00100099)
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~0x00108bc0(0x0010730a)
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...
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First address is address of function which was just entered, the second address
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is address of functions which call that.
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You can use the log2dress to dress the log again:
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...
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src/arch/x86/lib/c_start.S:85 calls /home/ruik/coreboot/src/boot/selfboot.c:367
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/home/ruik/coreboot/src/boot/selfboot.c:370 calls /home/ruik/coreboot/src/devices/device.c:325
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...
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Alternatively, you can use genprof to generate a gmon.out file, which can be used
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by gprof to show the call traces. You will need to install uthash library to compile
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that.
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Great use is:
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make
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./genprof /tmp/yourlog ; gprof ../../build/coreboot_ram | ./gprof2dot.py -e0 -n0 | dot -Tpng -o output.png
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Which generates a PNG with a call graph.
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