coreboot-kgpe-d16/util/genprof
Stefan Reinauer 8d7115560d Rename devices -> device
to match src/include/device

Change-Id: I5d0e5b4361c34881a3b81347aac48738cb5b9af0
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1960
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
2012-11-30 23:59:58 +01:00
..
Makefile
README Rename devices -> device 2012-11-30 23:59:58 +01:00
genprof.c
log2dress

README

Function tracing
----------------

Enable CONFIG_TRACE in debug menu. Run the compiled image on target. You will get
a log with a lot of lines like:

...
~0x001072e8(0x00100099)
~0x00108bc0(0x0010730a)
...

First address is address of function which was just entered, the second address
is address of functions which call that.

You can use the log2dress to dress the log again:

...
src/arch/x86/lib/c_start.S:85 calls /home/ruik/coreboot/src/boot/selfboot.c:367
/home/ruik/coreboot/src/boot/selfboot.c:370 calls /home/ruik/coreboot/src/device/device.c:325
...

Alternatively, you can use genprof to generate a gmon.out file, which can be used
by gprof to show the call traces. You will need to install uthash library to compile
that.

Great use is:

make
./genprof /tmp/yourlog ;  gprof ../../build/coreboot_ram |  ./gprof2dot.py -e0 -n0 | dot -Tpng -o output.png

Which generates a PNG with a call graph.