From bb9ecae70bbd1ab1daf94d893b02c78dfe1314f1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alex=20Benn=C3=A9e?= Date: Tue, 31 Jan 2023 09:42:23 +0000 Subject: [PATCH] build: deprecate --enable-gprof builds and remove from CI MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit As gprof relies on instrumentation you rarely get useful data compared to a real optimised build. Lets deprecate the build option and simplify the CI configuration as a result. Buglink: https://gitlab.com/qemu-project/qemu/-/issues/1338 Signed-off-by: Alex Bennée Message-Id: <20230131094224.861621-1-alex.bennee@linaro.org> Reviewed-by: Thomas Huth Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Thomas Huth --- .gitlab-ci.d/buildtest.yml | 19 ++++--------------- docs/about/deprecated.rst | 14 ++++++++++++++ meson.build | 7 ++++++- meson_options.txt | 3 ++- 4 files changed, 26 insertions(+), 17 deletions(-) diff --git a/.gitlab-ci.d/buildtest.yml b/.gitlab-ci.d/buildtest.yml index 0aa149a352..8f332fc36f 100644 --- a/.gitlab-ci.d/buildtest.yml +++ b/.gitlab-ci.d/buildtest.yml @@ -467,27 +467,16 @@ tsan-build: TARGETS: x86_64-softmmu ppc64-softmmu riscv64-softmmu x86_64-linux-user MAKE_CHECK_ARGS: bench V=1 -# gprof/gcov are GCC features -build-gprof-gcov: +# gcov is a GCC features +gcov: extends: .native_build_job_template needs: job: amd64-ubuntu2004-container + timeout: 80m variables: IMAGE: ubuntu2004 - CONFIGURE_ARGS: --enable-gprof --enable-gcov + CONFIGURE_ARGS: --enable-gcov TARGETS: aarch64-softmmu ppc64-softmmu s390x-softmmu x86_64-softmmu - artifacts: - expire_in: 1 days - paths: - - build - -check-gprof-gcov: - extends: .native_test_job_template - needs: - - job: build-gprof-gcov - artifacts: true - variables: - IMAGE: ubuntu2004 MAKE_CHECK_ARGS: check after_script: - cd build diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index da2e6fe63d..9317046177 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -20,6 +20,20 @@ they were first deprecated in the 2.10.0 release. What follows is a list of all features currently marked as deprecated. +Build options +------------- + +``gprof`` builds (since 8.0) +'''''''''''''''''''''''''''' + +The ``--enable-gprof`` configure setting relies on compiler +instrumentation to gather its data which can distort the generated +profile. As other non-instrumenting tools are available that give a +more holistic view of the system with non-instrumented binaries we are +deprecating the build option and no longer defend it in CI. The +``--enable-gcov`` build option remains for analysis test case +coverage. + System emulator command line arguments -------------------------------------- diff --git a/meson.build b/meson.build index 0026bba0ce..a76c855312 100644 --- a/meson.build +++ b/meson.build @@ -3805,7 +3805,12 @@ summary_info += {'memory allocator': get_option('malloc')} summary_info += {'avx2 optimization': config_host_data.get('CONFIG_AVX2_OPT')} summary_info += {'avx512bw optimization': config_host_data.get('CONFIG_AVX512BW_OPT')} summary_info += {'avx512f optimization': config_host_data.get('CONFIG_AVX512F_OPT')} -summary_info += {'gprof enabled': get_option('gprof')} +if get_option('gprof') + gprof_info = 'YES (deprecated)' +else + gprof_info = get_option('gprof') +endif +summary_info += {'gprof': gprof_info} summary_info += {'gcov': get_option('b_coverage')} summary_info += {'thread sanitizer': config_host.has_key('CONFIG_TSAN')} summary_info += {'CFI support': get_option('cfi')} diff --git a/meson_options.txt b/meson_options.txt index 56415c5c23..7e5801db90 100644 --- a/meson_options.txt +++ b/meson_options.txt @@ -320,7 +320,8 @@ option('debug_stack_usage', type: 'boolean', value: false, option('qom_cast_debug', type: 'boolean', value: false, description: 'cast debugging support') option('gprof', type: 'boolean', value: false, - description: 'QEMU profiling with gprof') + description: 'QEMU profiling with gprof', + deprecated: true) option('profiler', type: 'boolean', value: false, description: 'profiler support') option('slirp_smbd', type : 'feature', value : 'auto',