Linaro-acpi May 2014

linaro-acpi@lists.linaro.org

23 participants
24 discussions

[PATCH linaro-acpi] [RFC 4/7] arm64: Added cpu_data() macro for compilation

by Jonghwan Choi

Cpu_data macro is used to get cpu-related information in acpi-cpufreq driver. But there is no cpu_data macro in arm. For using cpu_data macro in both x86 and arm, I added cpu_data macro in arm and exported "DEFINE_PER_CPU(struct cpu, cpu_info)". Signed-off-by: Jonghwan Choi <jhbird.choi(a)samsung.com> --- arch/arm64/include/asm/cpu.h | 3 ++- arch/arm64/kernel/setup.c | 5 +++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/arm64/include/asm/cpu.h b/arch/arm64/include/asm/cpu.h index 8625eb1..69db3e7 100644 --- a/arch/arm64/include/asm/cpu.h +++ b/arch/arm64/include/asm/cpu.h @@ -20,6 +20,7 @@ struct cpuinfo_arm { #endif }; -DECLARE_PER_CPU(struct cpuinfo_arm, cpu_data); +DECLARE_PER_CPU(struct cpuinfo_arm, cpu_info); +#define cpu_data(cpu) per_cpu(cpu_info, cpu) #endif diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index 51fdb2c..149c3da 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -410,14 +410,15 @@ static int __init arm64_device_init(void) } arch_initcall(arm64_device_init); -static DEFINE_PER_CPU(struct cpu, cpu_data); +DEFINE_PER_CPU(struct cpu, cpu_info); +EXPORT_PER_CPU_SYMBOL(cpu_info); static int __init topology_init(void) { int i; for_each_possible_cpu(i) { - struct cpu *cpu = &per_cpu(cpu_data, i); + struct cpu *cpu = &per_cpu(cpu_info, i); cpu->hotpluggable = 1; register_cpu(cpu, i); } -- 1.7.10.4

9 years, 12 months

[PATCH linaro-acpi] [RFC 2/7] cpufreq: Change CONFIG_ name from X86_ACPI_CPUFREQ to

by Jonghwan Choi

To use acpi_cpufreq in both x86 and arm64, change the CONFIG_'s name and location. Signed-off-by: Jonghwan Choi <jhbird.choi(a)samsung.com> --- drivers/cpufreq/Kconfig | 16 ++++++++++++++++ drivers/cpufreq/Kconfig.x86 | 26 +++++--------------------- drivers/cpufreq/Makefile | 2 +- 3 files changed, 22 insertions(+), 22 deletions(-) diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index cb5b936..cbc7925 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -232,6 +232,22 @@ depends on ARM || ARM64 source "drivers/cpufreq/Kconfig.arm" endmenu +config ACPI_CPUFREQ + tristate "ACPI Processor P-States driver" + depends on ACPI_PROCESSOR + help + This driver adds a CPUFreq driver which utilizes the ACPI + Processor Performance States. + This driver also supports Intel Enhanced Speedstep and newer + AMD CPUs. + + To compile this driver as a module, choose M here: the + module will be called acpi-cpufreq. + + For details, take a look at <file:Documentation/cpu-freq/>. + + If in doubt, say N. + menu "AVR32 CPU frequency scaling drivers" depends on AVR32 diff --git a/drivers/cpufreq/Kconfig.x86 b/drivers/cpufreq/Kconfig.x86 index d369349..fc3a3d7 100644 --- a/drivers/cpufreq/Kconfig.x86 +++ b/drivers/cpufreq/Kconfig.x86 @@ -29,26 +29,10 @@ config X86_PCC_CPUFREQ If in doubt, say N. -config X86_ACPI_CPUFREQ - tristate "ACPI Processor P-States driver" - depends on ACPI_PROCESSOR - help - This driver adds a CPUFreq driver which utilizes the ACPI - Processor Performance States. - This driver also supports Intel Enhanced Speedstep and newer - AMD CPUs. - - To compile this driver as a module, choose M here: the - module will be called acpi-cpufreq. - - For details, take a look at <file:Documentation/cpu-freq/>. - - If in doubt, say N. - config X86_ACPI_CPUFREQ_CPB default y bool "Legacy cpb sysfs knob support for AMD CPUs" - depends on X86_ACPI_CPUFREQ && CPU_SUP_AMD + depends on ACPI_CPUFREQ && CPU_SUP_AMD help The powernow-k8 driver used to provide a sysfs knob called "cpb" to disable the Core Performance Boosting feature of AMD CPUs. This @@ -113,7 +97,7 @@ config X86_POWERNOW_K7_ACPI config X86_POWERNOW_K8 tristate "AMD Opteron/Athlon64 PowerNow!" - depends on ACPI && ACPI_PROCESSOR && X86_ACPI_CPUFREQ + depends on ACPI && ACPI_PROCESSOR && ACPI_CPUFREQ help This adds the CPUFreq driver for K8/early Opteron/Athlon64 processors. Support for K10 and newer processors is now in acpi-cpufreq. @@ -125,7 +109,7 @@ config X86_POWERNOW_K8 config X86_AMD_FREQ_SENSITIVITY tristate "AMD frequency sensitivity feedback powersave bias" - depends on CPU_FREQ_GOV_ONDEMAND && X86_ACPI_CPUFREQ && CPU_SUP_AMD + depends on CPU_FREQ_GOV_ONDEMAND && ACPI_CPUFREQ && CPU_SUP_AMD help This adds AMD-specific powersave bias function to the ondemand governor, which allows it to make more power-conscious frequency @@ -157,7 +141,7 @@ config X86_SPEEDSTEP_CENTRINO depends on X86_32 || (X86_64 && ACPI_PROCESSOR) help This is deprecated and this functionality is now merged into - acpi_cpufreq (X86_ACPI_CPUFREQ). Use that driver instead of + acpi_cpufreq (ACPI_CPUFREQ). Use that driver instead of speedstep_centrino. This adds the CPUFreq driver for Enhanced SpeedStep enabled mobile CPUs. This means Intel Pentium M (Centrino) CPUs @@ -265,7 +249,7 @@ config X86_E_POWERSAVER This adds the CPUFreq driver for VIA C7 processors. However, this driver does not have any safeguards to prevent operating the CPU out of spec and is thus considered dangerous. Please use the regular ACPI cpufreq - driver, enabled by CONFIG_X86_ACPI_CPUFREQ. + driver, enabled by CONFIG_ACPI_CPUFREQ. If in doubt, say N. diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile index 54a05c9..bfeb0fb 100644 --- a/drivers/cpufreq/Makefile +++ b/drivers/cpufreq/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_CPU_FREQ_GOV_INTERACTIVE) += cpufreq_interactive.o obj-$(CONFIG_CPU_FREQ_GOV_COMMON) += cpufreq_governor.o obj-$(CONFIG_GENERIC_CPUFREQ_CPU0) += cpufreq-cpu0.o +obj-$(CONFIG_ACPI_CPUFREQ) += acpi-cpufreq.o ############################################################################ ###### # x86 drivers. @@ -21,7 +22,6 @@ obj-$(CONFIG_GENERIC_CPUFREQ_CPU0) += cpufreq-cpu0.o # powernow-k8 can load then. ACPI is preferred to all other hardware-specific drivers. # speedstep-* is preferred over p4-clockmod. -obj-$(CONFIG_X86_ACPI_CPUFREQ) += acpi-cpufreq.o obj-$(CONFIG_X86_POWERNOW_K8) += powernow-k8.o obj-$(CONFIG_X86_PCC_CPUFREQ) += pcc-cpufreq.o obj-$(CONFIG_X86_POWERNOW_K6) += powernow-k6.o -- 1.7.10.4

9 years, 12 months

[PATCH linaro-acpi] [RFC1/7] ACPI: Fix compile error in arch/x86/kernel/setup.c

by Jonghwan Choi

Fix "arch/x86/kernel/setup.c:1150:2: error: implicit declaration of function 'early_acpi_boot_init Add missing early_acpi_boot_init in acpi.h Signed-off-by: Jonghwan Choi <jhbird.choi(a)samsung.com> --- include/linux/acpi.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/acpi.h b/include/linux/acpi.h index ca3290d..307612f 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -115,6 +115,7 @@ static inline void acpi_initrd_override(void *data, size_t size) char * __acpi_map_table (unsigned long phys_addr, unsigned long size); void __acpi_unmap_table(char *map, unsigned long size); +int early_acpi_boot_init(void); int acpi_boot_init (void); void acpi_boot_table_init (void); int acpi_mps_check (void); -- 1.7.10.4

9 years, 12 months

[PATCH linaro-acpi] [RFC 0/7] ACPI: Add ACPI cpufreq & cpuidle support for ARM

by Jonghwan Choi

Hi all, I would like to support acpi cpufreq & cpuidle for ARM. For supporting that, I tried to implement acpi cpufreq & cpuidle for ARM with ACPI. This patch is based on http://git.linaro.org/leg/acpi/leg-kernel.git. [CPUFREQ] I tried to separate this code into 3 parts which are common, x86-specific and arm-specific code. But as you know, there are too much x86-specific code in acpi-cpufreq.c When I tried to implement acpi-cpufreq-arm, there were a lot of compile error(due to x86-specific code). So I used #ifdef CONFIG_X86 to solve those errors.(and some hack codes) Later I will remove "#ifdef CONFIG_X86". And, if "ARM64 / ACPI: Introduce arch_register/unregister_cpu() for arm64" is merged, Then I can remove #ifdef for arch_un/register_cpu. [CPUIDLE] As Sudeep mentioned, I tried to use FFH. So I made cstate.c file in arm/arm64/kernel.(based on arch/x86/kernel/acpi/cstate.c) But I am not sure whether I implemented it properly. Jonghwan Choi (7): ACPI-Fix-compile-error-in-arch-x86-kernel-setup.c.patch cpufreq-Change-CONFIG_-name-from-X86_ACPI_CPUFREQ-to.patch acpi-Use-Hacks-to-allow-compilation-on-arm-environme.patch arm64-Change-struct-cpuinfo_arm.patch cpufreq-Add-ACPI-cpufreq-support-for-ARM.patch acpi-Add-ACPI-cpuidle-support-for-ARM.patch acpi-Allow-ACPI_PROCESSOR-for-ARM64.patch Thanks Best Regards

9 years, 12 months

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Linaro-acpi May 2014