Enable building libcpupower bindings for ELN/Rawhide

JIRA: https://issues.redhat.com/browse/RHEL-83442

Upstream Status: https://gitlab.com/cki-project/kernel-ark.git

commit ed717f656cc0640b8fc22d18dd52df6cfe622273
Author: John B. Wyatt IV <jwyatt@redhat.com>
Date:   Wed May 21 16:58:24 2025 -0400

    Enable building libcpupower bindings for ELN/Rawhide

    Python bindings for libcpupower were introduced in Linux 6.12 that are
    needed for tools like Tuna to manage c-states (the power states of a cpu).
    6.17-rc1 introduced changes to make it possible for distributions like
    Fedora Rawhide and ELN to build the bindings were merged in.

    The MR associated with this issue will allow the bindings to build. With
    consultation on the Fedora side kernel-tools-lib-devel was requested to be
    the package to add the two files that are needed by the bindings. SWIG is
    used to generate the bindings.

    Signed-off-by: John B. Wyatt IV <jwyatt@redhat.com>
    Signed-off-by: John B. Wyatt IV <sageofredondo@gmail.com>

Signed-off-by: John B. Wyatt IV <jwyatt@redhat.com>

Author: John B. Wyatt IV

redhat/kernel.spec.template

@@ -772,6 +772,11 @@ BuildRequires: libbpf-devel
 BuildRequires: bpftool
 BuildRequires: clang
 
+%ifarch %{cpupowerarchs}
+# For libcpupower bindings
+BuildRequires: swig
+%endif
+
 %ifnarch s390x
 BuildRequires: pciutils-devel
 %endif
@@ -3118,6 +3123,8 @@ chmod +x tools/perf/check-headers.sh
 %ifarch %{cpupowerarchs}
     # link against in-tree libcpupower for idle state support
     %global rtla_make %{tools_make} LDFLAGS="%{__global_ldflags} -L../../power/cpupower" INCLUDES="-I../../power/cpupower/lib"
+    # Build libcpupower Python bindings
+    %global libcpupower_python_bindings_make %{tools_make} LDFLAGS="-L%{buildroot}%{_libdir} -lcpupower"
 %else
     %global rtla_make %{tools_make}
 %endif
@@ -3504,6 +3511,12 @@ mv cpupower.lang ../
     popd
 %endif
 chmod 0755 %{buildroot}%{_libdir}/libcpupower.so*
+%{log_msg "Build libcpupower Python bindings"}
+pushd tools/power/cpupower/bindings/python
+%{libcpupower_python_bindings_make}
+%{log_msg "Install libcpupower Python bindings"}
+%{make} INSTALL_DIR=$RPM_BUILD_ROOT%{python3_sitearch} install
+popd
 %endif
 %ifarch x86_64
    mkdir -p %{buildroot}%{_mandir}/man8
@@ -4138,6 +4151,9 @@ fi\
 %{_includedir}/cpufreq.h
 %{_includedir}/cpuidle.h
 %{_includedir}/powercap.h
+# libcpupower Python bindings
+%{python3_sitearch}/_raw_pylibcpupower.so
+%{python3_sitearch}/raw_pylibcpupower.py
 %endif
 %if %{with_ynl}
 %{_libdir}/libynl*