[GIT,PULL] cpupower second update for Linux 6.12-rc1

diff --git a/MAINTAINERS b/MAINTAINERS
index 42decde38320..d3b661e5496e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5819,6 +5819,9 @@  CPU POWER MONITORING SUBSYSTEM
 M:	Thomas Renninger <trenn@suse.com>
 M:	Shuah Khan <shuah@kernel.org>
 M:	Shuah Khan <skhan@linuxfoundation.org>
+M:	John B. Wyatt IV <jwyatt@redhat.com>
+M:	John B. Wyatt IV <sageofredondo@gmail.com>
+M:	John Kacur <jkacur@redhat.com>
 L:	linux-pm@vger.kernel.org
 S:	Maintained
 F:	tools/power/cpupower/
diff --git a/tools/power/cpupower/bindings/python/.gitignore b/tools/power/cpupower/bindings/python/.gitignore
new file mode 100644
index 000000000000..5c9a1f0212dd
--- /dev/null
+++ b/tools/power/cpupower/bindings/python/.gitignore
@@ -0,0 +1,8 @@ 
+__pycache__/
+raw_pylibcpupower_wrap.c
+*.o
+*.so
+*.py
+!test_raw_pylibcpupower.py
+# git keeps ignoring this file, use git add -f raw_libcpupower.i
+!raw_pylibcpupower.i
diff --git a/tools/power/cpupower/bindings/python/Makefile b/tools/power/cpupower/bindings/python/Makefile
new file mode 100644
index 000000000000..dc09c5b66ead
--- /dev/null
+++ b/tools/power/cpupower/bindings/python/Makefile
@@ -0,0 +1,33 @@ 
+# SPDX-License-Identifier: GPL-2.0-only
+# Makefile for libcpupower's Python bindings
+#
+# This Makefile expects you have already run the makefile for cpupower to build
+# the .o files in the lib directory for the bindings to be created.
+
+CC := gcc
+HAVE_SWIG := $(shell if which swig >/dev/null 2>&1; then echo 1; else echo 0; fi)
+HAVE_PYCONFIG := $(shell if which python-config >/dev/null 2>&1; then echo 1; else echo 0; fi)
+
+LIB_DIR := ../../lib
+PY_INCLUDE = $(firstword $(shell python-config --includes))
+OBJECTS_LIB = $(wildcard $(LIB_DIR)/*.o)
+
+all: _raw_pylibcpupower.so
+
+_raw_pylibcpupower.so: raw_pylibcpupower_wrap.o
+	$(CC) -shared $(OBJECTS_LIB) raw_pylibcpupower_wrap.o -o _raw_pylibcpupower.so
+
+raw_pylibcpupower_wrap.o: raw_pylibcpupower_wrap.c
+	$(CC) -fPIC -c raw_pylibcpupower_wrap.c $(PY_INCLUDE)
+
+raw_pylibcpupower_wrap.c: raw_pylibcpupower.i
+ifeq ($(HAVE_SWIG),0)
+	$(error "swig was not found. Make sure you have it installed and in the PATH to generate the bindings.")
+else ifeq ($(HAVE_PYCONFIG),0)
+	$(error "python-config was not found. Make sure you have it installed and in the PATH to generate the bindings.")
+endif
+	swig -python raw_pylibcpupower.i
+
+# Will only clean the bindings folder; will not clean the actual cpupower folder
+clean:
+	rm -f raw_pylibcpupower.py raw_pylibcpupower_wrap.c raw_pylibcpupower_wrap.o _raw_pylibcpupower.so
diff --git a/tools/power/cpupower/bindings/python/README b/tools/power/cpupower/bindings/python/README
new file mode 100644
index 000000000000..0a4bb2581e8a
--- /dev/null
+++ b/tools/power/cpupower/bindings/python/README
@@ -0,0 +1,59 @@ 
+This folder contains the necessary files to build the Python bindings for
+libcpupower (aside from the libcpupower object files).
+
+
+requirements
+------------
+
+* You need the object files in the libcpupower directory compiled by
+cpupower's makefile.
+* The SWIG program must be installed.
+* The Python's development libraries installed.
+
+Please check that your version of SWIG is compatible with the version of Python
+installed on your machine by checking the SWIG changelog on their website.
+https://swig.org/
+
+Note that while SWIG itself is GPL v3+ licensed; the resulting output,
+the bindings code: is permissively licensed + the license of libcpupower's .o
+files. For these bindings that means GPL v2.
+
+Please see https://swig.org/legal.html and the discussion [1] for more details.
+
+[1]
+https://lore.kernel.org/linux-pm/Zqv9BOjxLAgyNP5B@hatbackup/
+
+
+build
+-----
+
+Install SWIG and the Python development files provided by your distribution.
+
+Build the object files for libcpupower by running make in the cpupower
+directory.
+
+Return to the directory this README is in to run:
+
+$ make
+
+
+testing
+-------
+
+Please verify the _raw_pylibcpupower.so and raw_pylibcpupower.py files have
+been created.
+
+To run the test script:
+
+$ python test_raw_pylibcpupower.py
+
+
+credits
+-------
+
+Original Bindings Author:
+John B. Wyatt IV
+jwyatt@redhat.com
+sageofredondo@gmail.com
+
+Copyright (C) 2024 Red Hat
diff --git a/tools/power/cpupower/bindings/python/raw_pylibcpupower.i b/tools/power/cpupower/bindings/python/raw_pylibcpupower.i
new file mode 100644
index 000000000000..96556d87a745
--- /dev/null
+++ b/tools/power/cpupower/bindings/python/raw_pylibcpupower.i
@@ -0,0 +1,247 @@ 
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+%module raw_pylibcpupower
+%{
+#include "../../lib/cpupower_intern.h"
+#include "../../lib/acpi_cppc.h"
+#include "../../lib/cpufreq.h"
+#include "../../lib/cpuidle.h"
+#include "../../lib/cpupower.h"
+#include "../../lib/powercap.h"
+%}
+
+/*
+ * cpupower_intern.h
+ */
+
+#define PATH_TO_CPU "/sys/devices/system/cpu/"
+#define MAX_LINE_LEN 4096
+#define SYSFS_PATH_MAX 255
+
+int is_valid_path(const char *path);
+
+unsigned int cpupower_read_sysfs(const char *path, char *buf, size_t buflen);
+
+unsigned int cpupower_write_sysfs(const char *path, char *buf, size_t buflen);
+
+/*
+ * acpi_cppc.h
+ */
+
+enum acpi_cppc_value {
+	HIGHEST_PERF,
+	LOWEST_PERF,
+	NOMINAL_PERF,
+	LOWEST_NONLINEAR_PERF,
+	LOWEST_FREQ,
+	NOMINAL_FREQ,
+	REFERENCE_PERF,
+	WRAPAROUND_TIME,
+	MAX_CPPC_VALUE_FILES
+};
+
+unsigned long acpi_cppc_get_data(unsigned int cpu,
+				 enum acpi_cppc_value which);
+
+/*
+ * cpufreq.h
+ */
+
+struct cpufreq_policy {
+	unsigned long min;
+	unsigned long max;
+	char *governor;
+};
+
+struct cpufreq_available_governors {
+	char *governor;
+	struct cpufreq_available_governors *next;
+	struct cpufreq_available_governors *first;
+};
+
+struct cpufreq_available_frequencies {
+	unsigned long frequency;
+	struct cpufreq_available_frequencies *next;
+	struct cpufreq_available_frequencies *first;
+};
+
+
+struct cpufreq_affected_cpus {
+	unsigned int cpu;
+	struct cpufreq_affected_cpus *next;
+	struct cpufreq_affected_cpus *first;
+};
+
+struct cpufreq_stats {
+	unsigned long frequency;
+	unsigned long long time_in_state;
+	struct cpufreq_stats *next;
+	struct cpufreq_stats *first;
+};
+
+unsigned long cpufreq_get_freq_kernel(unsigned int cpu);
+
+unsigned long cpufreq_get_freq_hardware(unsigned int cpu);
+
+#define cpufreq_get(cpu) cpufreq_get_freq_kernel(cpu);
+
+unsigned long cpufreq_get_transition_latency(unsigned int cpu);
+
+int cpufreq_get_hardware_limits(unsigned int cpu,
+				unsigned long *min,
+				unsigned long *max);
+
+char *cpufreq_get_driver(unsigned int cpu);
+
+void cpufreq_put_driver(char *ptr);
+
+struct cpufreq_policy *cpufreq_get_policy(unsigned int cpu);
+
+void cpufreq_put_policy(struct cpufreq_policy *policy);
+
+struct cpufreq_available_governors
+*cpufreq_get_available_governors(unsigned int cpu);
+
+void cpufreq_put_available_governors(
+	struct cpufreq_available_governors *first);
+
+struct cpufreq_available_frequencies
+*cpufreq_get_available_frequencies(unsigned int cpu);
+
+void cpufreq_put_available_frequencies(
+		struct cpufreq_available_frequencies *first);
+
+struct cpufreq_available_frequencies
+*cpufreq_get_boost_frequencies(unsigned int cpu);
+
+void cpufreq_put_boost_frequencies(
+		struct cpufreq_available_frequencies *first);
+
+struct cpufreq_affected_cpus *cpufreq_get_affected_cpus(unsigned
+							int cpu);
+
+void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *first);
+
+struct cpufreq_affected_cpus *cpufreq_get_related_cpus(unsigned
+							int cpu);
+
+void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *first);
+
+struct cpufreq_stats *cpufreq_get_stats(unsigned int cpu,
+					unsigned long long *total_time);
+
+void cpufreq_put_stats(struct cpufreq_stats *stats);
+
+unsigned long cpufreq_get_transitions(unsigned int cpu);
+
+int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy);
+
+int cpufreq_modify_policy_min(unsigned int cpu, unsigned long min_freq);
+
+int cpufreq_modify_policy_max(unsigned int cpu, unsigned long max_freq);
+
+int cpufreq_modify_policy_governor(unsigned int cpu, char *governor);
+
+int cpufreq_set_frequency(unsigned int cpu,
+				unsigned long target_frequency);
+
+unsigned long cpufreq_get_sysfs_value_from_table(unsigned int cpu,
+						 const char **table,
+						 unsigned int index,
+						 unsigned int size);
+
+/*
+ * cpuidle.h
+ */
+
+int cpuidle_is_state_disabled(unsigned int cpu,
+				       unsigned int idlestate);
+int cpuidle_state_disable(unsigned int cpu, unsigned int idlestate,
+				   unsigned int disable);
+unsigned long cpuidle_state_latency(unsigned int cpu,
+						unsigned int idlestate);
+unsigned long cpuidle_state_usage(unsigned int cpu,
+					unsigned int idlestate);
+unsigned long long cpuidle_state_time(unsigned int cpu,
+						unsigned int idlestate);
+char *cpuidle_state_name(unsigned int cpu,
+				unsigned int idlestate);
+char *cpuidle_state_desc(unsigned int cpu,
+				unsigned int idlestate);
+unsigned int cpuidle_state_count(unsigned int cpu);
+
+char *cpuidle_get_governor(void);
+
+char *cpuidle_get_driver(void);
+
+/*
+ * cpupower.h
+ */
+
+struct cpupower_topology {
+	/* Amount of CPU cores, packages and threads per core in the system */
+	unsigned int cores;
+	unsigned int pkgs;
+	unsigned int threads; /* per core */
+
+	/* Array gets mallocated with cores entries, holding per core info */
+	struct cpuid_core_info *core_info;
+};
+
+struct cpuid_core_info {
+	int pkg;
+	int core;
+	int cpu;
+
+	/* flags */
+	unsigned int is_online:1;
+};
+
+int get_cpu_topology(struct cpupower_topology *cpu_top);
+
+void cpu_topology_release(struct cpupower_topology cpu_top);
+
+int cpupower_is_cpu_online(unsigned int cpu);
+
+/*
+ * powercap.h
+ */
+
+struct powercap_zone {
+	char name[MAX_LINE_LEN];
+	/*
+	 * sys_name relative to PATH_TO_POWERCAP,
+	 * do not forget the / in between
+	 */
+	char sys_name[SYSFS_PATH_MAX];
+	int tree_depth;
+	struct powercap_zone *parent;
+	struct powercap_zone *children[POWERCAP_MAX_CHILD_ZONES];
+	/* More possible caps or attributes to be added? */
+	uint32_t has_power_uw:1,
+		 has_energy_uj:1;
+
+};
+
+int powercap_walk_zones(struct powercap_zone *zone,
+			int (*f)(struct powercap_zone *zone));
+
+struct powercap_zone *powercap_init_zones(void);
+
+int powercap_get_enabled(int *mode);
+
+int powercap_set_enabled(int mode);
+
+int powercap_get_driver(char *driver, int buflen);
+
+int powercap_get_max_energy_range_uj(struct powercap_zone *zone, uint64_t *val);
+
+int powercap_get_energy_uj(struct powercap_zone *zone, uint64_t *val);
+
+int powercap_get_max_power_range_uw(struct powercap_zone *zone, uint64_t *val);
+
+int powercap_get_power_uw(struct powercap_zone *zone, uint64_t *val);
+
+int powercap_zone_get_enabled(struct powercap_zone *zone, int *mode);
+
+int powercap_zone_set_enabled(struct powercap_zone *zone, int mode);
diff --git a/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py b/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py
new file mode 100755
index 000000000000..3d6f62b9556a
--- /dev/null
+++ b/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py
@@ -0,0 +1,42 @@ 
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0-only
+
+import raw_pylibcpupower as p
+
+# Simple function call
+
+"""
+Get cstate count
+"""
+cpu_cstates_count = p.cpuidle_state_count(0)
+if cpu_cstates_count > -1:
+    print(f"CPU 0 has {cpu_cstates_count} c-states")
+else:
+    print(f"cstate count error: return code: {cpu_cstates_count}")
+
+"""
+Disable cstate (will fail if the above is 0, ex: a virtual machine)
+"""
+cstate_disabled = p.cpuidle_state_disable(0, 0, 1)
+if cpu_cstates_count == 0:
+    print(f"CPU 0 has {cpu_cstates_count} c-states")
+else:
+    print(f"cstate count error: return code: {cpu_cstates_count}")
+
+match cstate_disabled:
+    case 0:
+        print(f"CPU state disabled")
+    case -1:
+        print(f"Idlestate not available")
+    case _:
+        print(f"Not documented")
+
+
+# Pointer example
+
+topo = p.cpupower_topology()
+total_cpus = p.get_cpu_topology(topo)
+if total_cpus > 0:
+    print(f"Number of total cpus: {total_cpus} and number of cores: {topo.cores}")
+else:
+    print(f"Error: could not get cpu topology")
diff --git a/tools/power/cpupower/lib/powercap.c b/tools/power/cpupower/lib/powercap.c
index a7a59c6bacda..94a0c69e55ef 100644
--- a/tools/power/cpupower/lib/powercap.c
+++ b/tools/power/cpupower/lib/powercap.c
@@ -77,6 +77,14 @@  int powercap_get_enabled(int *mode)
 	return sysfs_get_enabled(path, mode);
 }
 
+/*
+ * TODO: implement function. Returns dummy 0 for now.
+ */
+int powercap_set_enabled(int mode)
+{
+	return 0;
+}
+
 /*
  * Hardcoded, because rapl is the only powercap implementation
 - * this needs to get more generic if more powercap implementations