From 286928d9b52ffb9a1f1884a209252f1c5bb0aa1f Mon Sep 17 00:00:00 2001 From: Sergey Matyukevich Date: Sun, 4 Sep 2022 23:57:02 +0300 Subject: [PATCH] package/linux-tools: perf: add host-python3 dependency Linux kernel commit 00facc760903 ("perf jevents: Switch build to use jevents.py") switched to auto-generation of arch-specific PMU events using python script. Now custom PMU events for different platforms of the selected target architecture are not embedded into perf binary if an appropriate host python interpreter is not present. In practice it means that perf is successfully built, but 'perf list pmu' will show no custom events on a target platform even if those events are supported and properly defined in tools/perf/pmu-events/arch/ directory in the kernel source tree. Since building host-python3 is not instantaneous, add a config option, like we have in the kernel for a bunch of host packages, to id=ndicate that host-python3 is required, and only add the dependency in that case. Signed-off-by: Sergey Matyukevich [yann.morin.1998@free.fr: - add BR2_PACKAGE_LINUX_TOOLS_PERF_NEEDS_HOST_PYTHON3 - extend commit log accordingly ] Signed-off-by: Yann E. MORIN --- package/linux-tools/Config.in | 7 +++++++ package/linux-tools/linux-tool-perf.mk.in | 4 ++++ 2 files changed, 11 insertions(+) diff --git a/package/linux-tools/Config.in b/package/linux-tools/Config.in index 10b6538a59..253a8593b9 100644 --- a/package/linux-tools/Config.in +++ b/package/linux-tools/Config.in @@ -92,6 +92,13 @@ config BR2_PACKAGE_LINUX_TOOLS_PERF_TUI enables zooming into DSOs and threads as well as other features. +config BR2_PACKAGE_LINUX_TOOLS_PERF_NEEDS_HOST_PYTHON3 + bool "perf need python3 to build" + select BR2_PACKAGE_HOST_PYTHON3 + help + Starting with linux 6.0, parts of the perf source code + is generated by running a python3 script. + endif config BR2_PACKAGE_LINUX_TOOLS_SELFTESTS diff --git a/package/linux-tools/linux-tool-perf.mk.in b/package/linux-tools/linux-tool-perf.mk.in index 057c6f80e7..dda63cccec 100644 --- a/package/linux-tools/linux-tool-perf.mk.in +++ b/package/linux-tools/linux-tool-perf.mk.in @@ -8,6 +8,10 @@ LINUX_TOOLS += perf PERF_DEPENDENCIES = host-flex host-bison +ifeq ($(BR2_PACKAGE_LINUX_TOOLS_PERF_NEEDS_HOST_PYTHON3),y) +PERF_DEPENDENCIES += host-python3 +endif + ifeq ($(NORMALIZED_ARCH),x86_64) PERF_ARCH=x86 else