Commit c3a8b2bf authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

Merge tag 'linux-cpupower-6.14-rc1' of... 

Merge tag 'linux-cpupower-6.14-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/shuah/linux

Merge cpupower utility updates for 6.14 from Shuah Khan:

"Several fixes, cleanups and AMD support enhancements:

 - fix TSC MHz calculation
 - Add install and uninstall options to bindings makefile
 - Add header changes for cpufreq.h to SWIG bindings
 - selftests/cpufreq: gitignore output files and clean them in make clean
 - Remove spurious return statement
 - Add support for parsing 'enabled' or 'disabled' strings from table
 - Add support for amd-pstate preferred core rankings
 - Don't try to read frequency from hardware when kernel uses aperf mperf
 - Add support for showing energy performance preference
 - Don't fetch maximum latency when EPP is enabled
 - Adjust whitespace for amd-pstate specific prints
 - Fix cross compilation
 - revise is_valid flag handling for idle_monitor"

* tag 'linux-cpupower-6.14-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/shuah/linux:
  pm: cpupower: Add header changes for cpufreq.h to SWIG bindings
  pm: cpupower: Add install and uninstall options to bindings makefile
  cpupower: Adjust whitespace for amd-pstate specific prints
  cpupower: Don't fetch maximum latency when EPP is enabled
  cpupower: Add support for showing energy performance preference
  cpupower: Don't try to read frequency from hardware when kernel uses aperfmperf
  cpupower: Add support for amd-pstate preferred core rankings
  cpupower: Add support for parsing 'enabled' or 'disabled' strings from table
  cpupower: Remove spurious return statement
  cpupower: fix TSC MHz calculation
  cpupower: revise is_valid flag handling for idle_monitor
  pm: cpupower: Makefile: Fix cross compilation
  selftests/cpufreq: gitignore output files and clean them in make clean
parents 9d895519 8d097444

tools/power/cpupower/Makefile

+8 −0
Original line number Diff line number Diff line
@@ -87,11 +87,19 @@ INSTALL_SCRIPT = ${INSTALL} -m 644 
# to something more interesting, like "arm-linux-".  If you want

# to compile vs uClibc, that can be done here as well.

CROSS ?= #/usr/i386-linux-uclibc/usr/bin/i386-uclibc-

ifneq ($(CROSS), )

CC = $(CROSS)gcc

LD = $(CROSS)gcc

AR = $(CROSS)ar

STRIP = $(CROSS)strip

RANLIB = $(CROSS)ranlib

else

CC ?= $(CROSS)gcc

LD ?= $(CROSS)gcc

AR ?= $(CROSS)ar

STRIP ?= $(CROSS)strip

RANLIB ?= $(CROSS)ranlib

endif

HOSTCC = gcc

MKDIR = mkdir

tools/power/cpupower/bindings/python/Makefile

+10 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ HAVE_PYCONFIG := $(shell if which python-config >/dev/null 2>&1; then echo 1; el 
LIB_DIR := ../../lib

PY_INCLUDE = $(firstword $(shell python-config --includes))

OBJECTS_LIB = $(wildcard $(LIB_DIR)/*.o)

INSTALL_DIR = $(shell python3 -c "import site; print(site.getsitepackages()[0])")



all: _raw_pylibcpupower.so
@@ -28,6 +29,15 @@ else ifeq ($(HAVE_PYCONFIG),0) 
endif

	swig -python raw_pylibcpupower.swg



# Only installs the Python bindings

install: _raw_pylibcpupower.so

	install -D _raw_pylibcpupower.so $(INSTALL_DIR)/_raw_pylibcpupower.so

	install -D raw_pylibcpupower.py $(INSTALL_DIR)/raw_pylibcpupower.py



uninstall:

	rm -f $(INSTALL_DIR)/_raw_pylibcpupower.so

	rm -f $(INSTALL_DIR)/raw_pylibcpupower.py



# 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

tools/power/cpupower/bindings/python/README

+25 −0
Original line number Diff line number Diff line
@@ -48,6 +48,31 @@ To run the test script: 
$ python test_raw_pylibcpupower.py





developing/using the bindings directly

--------------------------------------



You need to add the Python bindings directory to your $PYTHONPATH.



You would set the path in the Bash terminal or in the Bash profile:



PYTHONPATH=~/linux/tools/power/cpupower/bindings/python:$PYTHONPATH



This allows you to set a specific repo of the bindings to use.





installing/uninstalling

-----------------------



Python uses a system specific site-packages folder to look up modules to import

by default. You do not need to install cpupower to use the SWIG bindings.



You can install and uninstall the bindings to the site-packages with:



sudo make install



sudo make uninstall





credits

-------

tools/power/cpupower/bindings/python/raw_pylibcpupower.swg

+3 −0
Original line number Diff line number Diff line
@@ -134,6 +134,9 @@ void cpufreq_put_stats(struct cpufreq_stats *stats); 


unsigned long cpufreq_get_transitions(unsigned int cpu);



char *cpufreq_get_energy_performance_preference(unsigned int cpu);

void cpufreq_put_energy_performance_preference(char *ptr);



int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy);



int cpufreq_modify_policy_min(unsigned int cpu, unsigned long min_freq);

tools/power/cpupower/lib/cpufreq.c

+18 −0
Original line number Diff line number Diff line
@@ -102,6 +102,10 @@ unsigned long cpufreq_get_sysfs_value_from_table(unsigned int cpu, 
	if (len == 0)

		return 0;



	if (!strcmp(linebuf, "enabled\n"))

		return 1;

	if (!strcmp(linebuf, "disabled\n"))

		return 0;

	value = strtoul(linebuf, &endp, 0);



	if (endp == linebuf || errno == ERANGE)
@@ -123,12 +127,14 @@ static unsigned long sysfs_cpufreq_get_one_value(unsigned int cpu, 
enum cpufreq_string {

	SCALING_DRIVER,

	SCALING_GOVERNOR,

	ENERGY_PERFORMANCE_PREFERENCE,

	MAX_CPUFREQ_STRING_FILES

};



static const char *cpufreq_string_files[MAX_CPUFREQ_STRING_FILES] = {

	[SCALING_DRIVER] = "scaling_driver",

	[SCALING_GOVERNOR] = "scaling_governor",

	[ENERGY_PERFORMANCE_PREFERENCE] = "energy_performance_preference",

};
@@ -203,6 +209,18 @@ unsigned long cpufreq_get_transition_latency(unsigned int cpu) 
	return sysfs_cpufreq_get_one_value(cpu, CPUINFO_LATENCY);

}



char *cpufreq_get_energy_performance_preference(unsigned int cpu)

{

	return sysfs_cpufreq_get_one_string(cpu, ENERGY_PERFORMANCE_PREFERENCE);

}



void cpufreq_put_energy_performance_preference(char *ptr)

{

	if (!ptr)

		return;

	free(ptr);

}



int cpufreq_get_hardware_limits(unsigned int cpu,

				unsigned long *min,

				unsigned long *max)