From 8c99c27df10f6c5a120e41ffb0948e357f5a2d20 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ky=C3=B6sti=20M=C3=A4lkki?= Date: Fri, 24 Jul 2020 15:54:31 +0300 Subject: lib/trace: Remove TRACE support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Looks like the option is generally not compatible with garbage collections. Nothing gets inlined, for example is_smp_boot() no longer evaluates to constant false and thus the symbols from secondary.S would need to be present for the build to pass even if we set SMP=n. Also the addresses of relocatable ramstage are currently not normalised on the logs, so util/genprof would be unable dress those. Change-Id: I0b6f310e15e6f4992cd054d288903fea8390e5cf Signed-off-by: Kyösti Mälkki Reviewed-on: https://review.coreboot.org/c/coreboot/+/45757 Tested-by: build bot (Jenkins) Reviewed-by: Angel Pons Reviewed-by: Nico Huber --- util/genprof/README | 31 ------------------------------- 1 file changed, 31 deletions(-) delete mode 100644 util/genprof/README (limited to 'util/genprof/README') diff --git a/util/genprof/README b/util/genprof/README deleted file mode 100644 index d4159c2fd6..0000000000 --- a/util/genprof/README +++ /dev/null @@ -1,31 +0,0 @@ -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/ramstage | ./gprof2dot.py -e0 -n0 | dot -Tpng -o output.png - -Which generates a PNG with a call graph. -- cgit v1.2.3