From ab5cd440b38f704bd45fd5b9944158c0f2fd35c8 Mon Sep 17 00:00:00 2001 From: Etienne Cordonnier Date: Sat, 9 Aug 2025 15:12:02 +0200 Subject: [PATCH] perfetto: enabled traced_perf by compiling with clang traced_perf is required for using e.g. callstack_sampling, see https://perfetto.dev/docs/getting-started/cpu-profiling Tested on qemu: Starting perfetto using a configuration which uses `callstack_sampling` starts traced_perf as a side-effect when perfetto is compiled with clang: ``` root@qemux86-64:~# tracebox --txt -c /tmp/config.pbtxt -o /tmp/perfetto-trace.pb & root@qemux86-64:~# ps -eo pid,cmd | grep tracebox 529 tracebox --txt -c /tmp/config.pbtxt -o /tmp/perfetto-trace.pb 530 /usr/bin/tracebox traced 533 /usr/bin/tracebox traced_probes --reset-ftrace 536 /usr/bin/tracebox traced_perf ``` Signed-off-by: Etienne Cordonnier Signed-off-by: Khem Raj --- meta-oe/recipes-devtools/perfetto/perfetto.bb | 3 +++ 1 file changed, 3 insertions(+) diff --git a/meta-oe/recipes-devtools/perfetto/perfetto.bb b/meta-oe/recipes-devtools/perfetto/perfetto.bb index a560c5643c..a2a4c9f39e 100644 --- a/meta-oe/recipes-devtools/perfetto/perfetto.bb +++ b/meta-oe/recipes-devtools/perfetto/perfetto.bb @@ -51,6 +51,9 @@ require perfetto.inc DEPENDS += " ninja-native" +# Use clang in order to enable traced_perf ( see https://github.com/google/perfetto/blob/092d0ceace6fa516fac1bd4e715c226eaaebe26e/gn/perfetto.gni#L177 , +# enable_perfetto_traced_perf depends on "is_clang") +TOOLCHAIN = "clang" COMPATIBLE_HOST = "(i.86|x86_64|aarch64|arm).*-linux*" CCACHE_DISABLE = "1"