linaro-kernel September 2014

linaro-kernel@lists.linaro.org

85 participants
281 discussions

[PATCH] asm-generic/io.h: Implement read[bwlq]_relaxed()

by Daniel Thompson

Currently the read[bwlq]_relaxed() family are implemented on every architecture except blackfin, m68k[1], metag, openrisc, s390[2] and score. Increasingly drivers are being optimized to exploit relaxed reads putting these architectures at risk of compilation failures for shared drivers. This patch addresses this by providing implementations of read[bwlq]_relaxed() that are identical to the equivalent read[bwlq](). All the above architectures include asm-generic/io.h . Note that currently only eight architectures (alpha, arm, arm64, avr32, hexagon, microblaze, mips and sh) implement write[bwlq]_relaxed() meaning these functions are deliberately not included in this patch. [1] m68k includes the relaxed family only when configured *without* MMU. [2] s390 requires CONFIG_PCI to include the relaxed family. Signed-off-by: Daniel Thompson <daniel.thompson(a)linaro.org> Cc: Will Deacon <will.deacon(a)arm.com> Cc: Arnd Bergmann <arnd(a)arndb.de> Cc: linux-arch(a)vger.kernel.org --- include/asm-generic/io.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index 975e1cc..85ea117 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -66,6 +66,16 @@ static inline u32 readl(const volatile void __iomem *addr) return __le32_to_cpu(__raw_readl(addr)); } +#ifndef readb_relaxed +#define readb_relaxed __raw_readb +#endif +#ifndef readw_relaxed +#define readw_relaxed readw +#endif +#ifndef readl_relaxed +#define readl_relaxed readl +#endif + #ifndef __raw_writeb static inline void __raw_writeb(u8 b, volatile void __iomem *addr) { @@ -105,6 +115,10 @@ static inline u64 readq(const volatile void __iomem *addr) return __le64_to_cpu(__raw_readq(addr)); } +#ifndef readq_relaxed +#define readq_relaxed readq +#endif + #ifndef __raw_writeq static inline void __raw_writeq(u64 b, volatile void __iomem *addr) { -- 1.9.3

10 years, 5 months

[PATCH Resend] cpufreq: cpu0: rename driver and internals to 'cpufreq_dt'

by Viresh Kumar

The naming convention of this driver was always under the scanner, people complained that it should have a more generic name than cpu0, as it manages all CPUs that are sharing clock lines. Also, in future it will be modified to support any number of clusters with separate clock/voltage lines. Lets rename it to 'cpufreq_dt' from 'cpufreq_cpu0'. Tested-by: Stephen Boyd <sboyd(a)codeaurora.org> Signed-off-by: Viresh Kumar <viresh.kumar(a)linaro.org> --- Changes in Resend: - replace generic with dt, and a new name for driver - Merged two patches together so that renames are handled in a single patch. - Rebased over bleeding-edge .../cpufreq/{cpufreq-cpu0.txt => cpufreq-dt.txt} | 8 ++--- arch/arm/configs/mvebu_v7_defconfig | 2 +- arch/arm/mach-imx/imx27-dt.c | 2 +- arch/arm/mach-imx/mach-imx51.c | 2 +- arch/arm/mach-mvebu/pmsu.c | 2 +- arch/arm/mach-omap2/pm.c | 2 +- arch/arm/mach-shmobile/board-ape6evm-reference.c | 2 +- arch/arm/mach-shmobile/cpufreq.c | 2 +- arch/arm/mach-shmobile/setup-sh73a0.c | 4 +-- arch/arm/mach-zynq/common.c | 2 +- drivers/cpufreq/Kconfig | 8 ++--- drivers/cpufreq/Kconfig.arm | 2 +- drivers/cpufreq/Makefile | 2 +- drivers/cpufreq/{cpufreq-cpu0.c => cpufreq-dt.c} | 38 +++++++++++----------- drivers/cpufreq/exynos4210-cpufreq.c | 2 +- drivers/cpufreq/exynos4x12-cpufreq.c | 2 +- drivers/cpufreq/exynos5250-cpufreq.c | 2 +- drivers/cpufreq/highbank-cpufreq.c | 6 ++-- drivers/cpufreq/s5pv210-cpufreq.c | 2 +- 19 files changed, 46 insertions(+), 46 deletions(-) rename Documentation/devicetree/bindings/cpufreq/{cpufreq-cpu0.txt => cpufreq-dt.txt} (85%) rename drivers/cpufreq/{cpufreq-cpu0.c => cpufreq-dt.c} (90%) diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-cpu0.txt b/Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt similarity index 85% rename from Documentation/devicetree/bindings/cpufreq/cpufreq-cpu0.txt rename to Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt index 366690c..e41c98f 100644 --- a/Documentation/devicetree/bindings/cpufreq/cpufreq-cpu0.txt +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt @@ -1,8 +1,8 @@ -Generic CPU0 cpufreq driver +Generic cpufreq driver -It is a generic cpufreq driver for CPU0 frequency management. It -supports both uniprocessor (UP) and symmetric multiprocessor (SMP) -systems which share clock and voltage across all CPUs. +It is a generic DT based cpufreq driver for frequency management. It supports +both uniprocessor (UP) and symmetric multiprocessor (SMP) systems which share +clock and voltage across all CPUs. Both required and optional properties listed below must be defined under node /cpus/cpu@0. diff --git a/arch/arm/configs/mvebu_v7_defconfig b/arch/arm/configs/mvebu_v7_defconfig index fdfda1f..7309988b 100644 --- a/arch/arm/configs/mvebu_v7_defconfig +++ b/arch/arm/configs/mvebu_v7_defconfig @@ -32,7 +32,7 @@ CONFIG_ARM_ATAG_DTB_COMPAT=y CONFIG_CPU_IDLE=y CONFIG_ARM_MVEBU_V7_CPUIDLE=y CONFIG_CPU_FREQ=y -CONFIG_CPUFREQ_GENERIC=y +CONFIG_CPUFREQ_DT=y CONFIG_VFP=y CONFIG_NET=y CONFIG_INET=y diff --git a/arch/arm/mach-imx/imx27-dt.c b/arch/arm/mach-imx/imx27-dt.c index 080e66c..dc8f1a6 100644 --- a/arch/arm/mach-imx/imx27-dt.c +++ b/arch/arm/mach-imx/imx27-dt.c @@ -20,7 +20,7 @@ static void __init imx27_dt_init(void) { - struct platform_device_info devinfo = { .name = "cpufreq-cpu0", }; + struct platform_device_info devinfo = { .name = "cpufreq-dt", }; mxc_arch_reset_init_dt(); diff --git a/arch/arm/mach-imx/mach-imx51.c b/arch/arm/mach-imx/mach-imx51.c index c77deb3..2c5fcaf 100644 --- a/arch/arm/mach-imx/mach-imx51.c +++ b/arch/arm/mach-imx/mach-imx51.c @@ -51,7 +51,7 @@ static void __init imx51_ipu_mipi_setup(void) static void __init imx51_dt_init(void) { - struct platform_device_info devinfo = { .name = "cpufreq-cpu0", }; + struct platform_device_info devinfo = { .name = "cpufreq-dt", }; mxc_arch_reset_init_dt(); imx51_ipu_mipi_setup(); diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c index 8a70a51..bbd8664 100644 --- a/arch/arm/mach-mvebu/pmsu.c +++ b/arch/arm/mach-mvebu/pmsu.c @@ -644,7 +644,7 @@ static int __init armada_xp_pmsu_cpufreq_init(void) } } - platform_device_register_simple("cpufreq-generic", -1, NULL, 0); + platform_device_register_simple("cpufreq-dt", -1, NULL, 0); return 0; } diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c index 828aee9..58920bc 100644 --- a/arch/arm/mach-omap2/pm.c +++ b/arch/arm/mach-omap2/pm.c @@ -282,7 +282,7 @@ static inline void omap_init_cpufreq(void) if (!of_have_populated_dt()) devinfo.name = "omap-cpufreq"; else - devinfo.name = "cpufreq-cpu0"; + devinfo.name = "cpufreq-dt"; platform_device_register_full(&devinfo); } diff --git a/arch/arm/mach-shmobile/board-ape6evm-reference.c b/arch/arm/mach-shmobile/board-ape6evm-reference.c index 2f7723e..0110751 100644 --- a/arch/arm/mach-shmobile/board-ape6evm-reference.c +++ b/arch/arm/mach-shmobile/board-ape6evm-reference.c @@ -50,7 +50,7 @@ static void __init ape6evm_add_standard_devices(void) r8a73a4_add_dt_devices(); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); - platform_device_register_simple("cpufreq-cpu0", -1, NULL, 0); + platform_device_register_simple("cpufreq-dt", -1, NULL, 0); } static const char *ape6evm_boards_compat_dt[] __initdata = { diff --git a/arch/arm/mach-shmobile/cpufreq.c b/arch/arm/mach-shmobile/cpufreq.c index 8a24b2b..57fbff0 100644 --- a/arch/arm/mach-shmobile/cpufreq.c +++ b/arch/arm/mach-shmobile/cpufreq.c @@ -12,6 +12,6 @@ int __init shmobile_cpufreq_init(void) { - platform_device_register_simple("cpufreq-cpu0", -1, NULL, 0); + platform_device_register_simple("cpufreq-dt", -1, NULL, 0); return 0; } diff --git a/arch/arm/mach-shmobile/setup-sh73a0.c b/arch/arm/mach-shmobile/setup-sh73a0.c index 2c802ae..15b990c 100644 --- a/arch/arm/mach-shmobile/setup-sh73a0.c +++ b/arch/arm/mach-shmobile/setup-sh73a0.c @@ -775,7 +775,7 @@ void __init sh73a0_add_early_devices(void) void __init sh73a0_add_standard_devices_dt(void) { - struct platform_device_info devinfo = { .name = "cpufreq-cpu0", .id = -1, }; + struct platform_device_info devinfo = { .name = "cpufreq-dt", .id = -1, }; /* clocks are setup late during boot in the case of DT */ sh73a0_clock_init(); @@ -784,7 +784,7 @@ void __init sh73a0_add_standard_devices_dt(void) ARRAY_SIZE(sh73a0_devices_dt)); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); - /* Instantiate cpufreq-cpu0 */ + /* Instantiate cpufreq-dt */ platform_device_register_full(&devinfo); } diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c index 31a6fa4..ec03ec4 100644 --- a/arch/arm/mach-zynq/common.c +++ b/arch/arm/mach-zynq/common.c @@ -104,7 +104,7 @@ static int __init zynq_get_revision(void) */ static void __init zynq_init_machine(void) { - struct platform_device_info devinfo = { .name = "cpufreq-cpu0", }; + struct platform_device_info devinfo = { .name = "cpufreq-dt", }; struct soc_device_attribute *soc_dev_attr; struct soc_device *soc_dev; struct device *parent = NULL; diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index ffe350f..3489f8f 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -183,14 +183,14 @@ config CPU_FREQ_GOV_CONSERVATIVE If in doubt, say N. -config GENERIC_CPUFREQ_CPU0 - tristate "Generic CPU0 cpufreq driver" +config CPUFREQ_DT + tristate "Generic DT based cpufreq driver" depends on HAVE_CLK && OF - # if CPU_THERMAL is on and THERMAL=m, CPU0 cannot be =y: + # if CPU_THERMAL is on and THERMAL=m, CPUFREQ_DT cannot be =y: depends on !CPU_THERMAL || THERMAL select PM_OPP help - This adds a generic cpufreq driver for CPU0 frequency management. + This adds a generic DT based cpufreq driver for frequency management. It supports both uniprocessor (UP) and symmetric multiprocessor (SMP) systems which share clock and voltage across all CPUs. diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index 7364a53..48ed28b 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -92,7 +92,7 @@ config ARM_EXYNOS_CPU_FREQ_BOOST_SW config ARM_HIGHBANK_CPUFREQ tristate "Calxeda Highbank-based" - depends on ARCH_HIGHBANK && GENERIC_CPUFREQ_CPU0 && REGULATOR + depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR default m help This adds the CPUFreq driver for Calxeda Highbank SoC diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile index db6d9a2..40c53dc 100644 --- a/drivers/cpufreq/Makefile +++ b/drivers/cpufreq/Makefile @@ -13,7 +13,7 @@ obj-$(CONFIG_CPU_FREQ_GOV_ONDEMAND) += cpufreq_ondemand.o obj-$(CONFIG_CPU_FREQ_GOV_CONSERVATIVE) += cpufreq_conservative.o obj-$(CONFIG_CPU_FREQ_GOV_COMMON) += cpufreq_governor.o -obj-$(CONFIG_GENERIC_CPUFREQ_CPU0) += cpufreq-cpu0.o +obj-$(CONFIG_CPUFREQ_DT) += cpufreq-dt.o ################################################################################## # x86 drivers. diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-dt.c similarity index 90% rename from drivers/cpufreq/cpufreq-cpu0.c rename to drivers/cpufreq/cpufreq-dt.c index a5f8c5f..e002650 100644 --- a/drivers/cpufreq/cpufreq-cpu0.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -4,7 +4,7 @@ * Copyright (C) 2014 Linaro. * Viresh Kumar <viresh.kumar(a)linaro.org> * - * The OPP code in function cpu0_set_target() is reused from + * The OPP code in function set_target() is reused from * drivers/cpufreq/omap-cpufreq.c * * This program is free software; you can redistribute it and/or modify @@ -35,7 +35,7 @@ struct private_data { unsigned int voltage_tolerance; /* in percentage */ }; -static int cpu0_set_target(struct cpufreq_policy *policy, unsigned int index) +static int set_target(struct cpufreq_policy *policy, unsigned int index) { struct dev_pm_opp *opp; struct cpufreq_frequency_table *freq_table = policy->freq_table; @@ -176,7 +176,7 @@ static int allocate_resources(int cpu, struct device **cdev, return ret; } -static int cpu0_cpufreq_init(struct cpufreq_policy *policy) +static int cpufreq_init(struct cpufreq_policy *policy) { struct cpufreq_frequency_table *freq_table; struct thermal_cooling_device *cdev; @@ -287,7 +287,7 @@ static int cpu0_cpufreq_init(struct cpufreq_policy *policy) return ret; } -static int cpu0_cpufreq_exit(struct cpufreq_policy *policy) +static int cpufreq_exit(struct cpufreq_policy *policy) { struct private_data *priv = policy->driver_data; @@ -301,18 +301,18 @@ static int cpu0_cpufreq_exit(struct cpufreq_policy *policy) return 0; } -static struct cpufreq_driver cpu0_cpufreq_driver = { +static struct cpufreq_driver dt_cpufreq_driver = { .flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK, .verify = cpufreq_generic_frequency_table_verify, - .target_index = cpu0_set_target, + .target_index = set_target, .get = cpufreq_generic_get, - .init = cpu0_cpufreq_init, - .exit = cpu0_cpufreq_exit, - .name = "generic_cpu0", + .init = cpufreq_init, + .exit = cpufreq_exit, + .name = "cpufreq-dt", .attr = cpufreq_generic_attr, }; -static int cpu0_cpufreq_probe(struct platform_device *pdev) +static int dt_cpufreq_probe(struct platform_device *pdev) { struct device *cpu_dev; struct regulator *cpu_reg; @@ -334,30 +334,30 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev) if (!IS_ERR(cpu_reg)) regulator_put(cpu_reg); - ret = cpufreq_register_driver(&cpu0_cpufreq_driver); + ret = cpufreq_register_driver(&dt_cpufreq_driver); if (ret) dev_err(cpu_dev, "failed register driver: %d\n", ret); return ret; } -static int cpu0_cpufreq_remove(struct platform_device *pdev) +static int dt_cpufreq_remove(struct platform_device *pdev) { - cpufreq_unregister_driver(&cpu0_cpufreq_driver); + cpufreq_unregister_driver(&dt_cpufreq_driver); return 0; } -static struct platform_driver cpu0_cpufreq_platdrv = { +static struct platform_driver dt_cpufreq_platdrv = { .driver = { - .name = "cpufreq-cpu0", + .name = "cpufreq-dt", .owner = THIS_MODULE, }, - .probe = cpu0_cpufreq_probe, - .remove = cpu0_cpufreq_remove, + .probe = dt_cpufreq_probe, + .remove = dt_cpufreq_remove, }; -module_platform_driver(cpu0_cpufreq_platdrv); +module_platform_driver(dt_cpufreq_platdrv); MODULE_AUTHOR("Viresh Kumar <viresh.kumar(a)linaro.org>"); MODULE_AUTHOR("Shawn Guo <shawn.guo(a)linaro.org>"); -MODULE_DESCRIPTION("Generic CPU0 cpufreq driver"); +MODULE_DESCRIPTION("Generic cpufreq driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/cpufreq/exynos4210-cpufreq.c b/drivers/cpufreq/exynos4210-cpufreq.c index 61a5431..843ec82 100644 --- a/drivers/cpufreq/exynos4210-cpufreq.c +++ b/drivers/cpufreq/exynos4210-cpufreq.c @@ -127,7 +127,7 @@ int exynos4210_cpufreq_init(struct exynos_dvfs_info *info) * dependencies on platform headers. It is necessary to enable * Exynos multi-platform support and will be removed together with * this whole driver as soon as Exynos gets migrated to use - * cpufreq-cpu0 driver. + * cpufreq-dt driver. */ np = of_find_compatible_node(NULL, NULL, "samsung,exynos4210-clock"); if (!np) { diff --git a/drivers/cpufreq/exynos4x12-cpufreq.c b/drivers/cpufreq/exynos4x12-cpufreq.c index 351a207..9e78a85 100644 --- a/drivers/cpufreq/exynos4x12-cpufreq.c +++ b/drivers/cpufreq/exynos4x12-cpufreq.c @@ -174,7 +174,7 @@ int exynos4x12_cpufreq_init(struct exynos_dvfs_info *info) * dependencies on platform headers. It is necessary to enable * Exynos multi-platform support and will be removed together with * this whole driver as soon as Exynos gets migrated to use - * cpufreq-cpu0 driver. + * cpufreq-dt driver. */ np = of_find_compatible_node(NULL, NULL, "samsung,exynos4412-clock"); if (!np) { diff --git a/drivers/cpufreq/exynos5250-cpufreq.c b/drivers/cpufreq/exynos5250-cpufreq.c index c91ce69..3eafdc7 100644 --- a/drivers/cpufreq/exynos5250-cpufreq.c +++ b/drivers/cpufreq/exynos5250-cpufreq.c @@ -153,7 +153,7 @@ int exynos5250_cpufreq_init(struct exynos_dvfs_info *info) * dependencies on platform headers. It is necessary to enable * Exynos multi-platform support and will be removed together with * this whole driver as soon as Exynos gets migrated to use - * cpufreq-cpu0 driver. + * cpufreq-dt driver. */ np = of_find_compatible_node(NULL, NULL, "samsung,exynos5250-clock"); if (!np) { diff --git a/drivers/cpufreq/highbank-cpufreq.c b/drivers/cpufreq/highbank-cpufreq.c index bf8902a..ec399ad 100644 --- a/drivers/cpufreq/highbank-cpufreq.c +++ b/drivers/cpufreq/highbank-cpufreq.c @@ -6,7 +6,7 @@ * published by the Free Software Foundation. * * This driver provides the clk notifier callbacks that are used when - * the cpufreq-cpu0 driver changes to frequency to alert the highbank + * the cpufreq-dt driver changes to frequency to alert the highbank * EnergyCore Management Engine (ECME) about the need to change * voltage. The ECME interfaces with the actual voltage regulators. */ @@ -60,7 +60,7 @@ static struct notifier_block hb_cpufreq_clk_nb = { static int hb_cpufreq_driver_init(void) { - struct platform_device_info devinfo = { .name = "cpufreq-cpu0", }; + struct platform_device_info devinfo = { .name = "cpufreq-dt", }; struct device *cpu_dev; struct clk *cpu_clk; struct device_node *np; @@ -95,7 +95,7 @@ static int hb_cpufreq_driver_init(void) goto out_put_node; } - /* Instantiate cpufreq-cpu0 */ + /* Instantiate cpufreq-dt */ platform_device_register_full(&devinfo); out_put_node: diff --git a/drivers/cpufreq/s5pv210-cpufreq.c b/drivers/cpufreq/s5pv210-cpufreq.c index 3f9791f..567caa6 100644 --- a/drivers/cpufreq/s5pv210-cpufreq.c +++ b/drivers/cpufreq/s5pv210-cpufreq.c @@ -597,7 +597,7 @@ static int s5pv210_cpufreq_probe(struct platform_device *pdev) * and dependencies on platform headers. It is necessary to enable * S5PV210 multi-platform support and will be removed together with * this whole driver as soon as S5PV210 gets migrated to use - * cpufreq-cpu0 driver. + * cpufreq-dt driver. */ np = of_find_compatible_node(NULL, NULL, "samsung,s5pv210-clock"); if (!np) { -- 2.0.3.693.g996b0fd

10 years, 5 months

[PATCH V3 00/10] CPUFreq: cpufreq-cpu0 updates for 3.{17|18 ?}

by Viresh Kumar

Hi Rafael, I am sending this again, but without the controversial part this time. I have dropped last two patches which were about detecting clock sharing among CPUs. Would fix up that later once other Maintainers get in sync about the bindings. So, what's left here ? These are mostly updates/reorders which can be applied the patches which I have dropped now. These are all well reviewed and tested by others. Getting them in shouldn't break anything, I believe. Its better people start using the updates we already have, otherwise they will keep on sending fixes they get (The way Pramod Gurav tried it today). Can we please get them in 3.17 if its still allowed? Or -next otherwise. V2: https://lkml.org/lkml/2014/7/1/358 Rebased over: 3.17-rc2 git://git.linaro.org/people/viresh.kumar/linux.git cpufreq/cpu0-updates-v3 V2->V3: Dropped few patches, nothing much. -- Thanks Viresh Viresh Kumar (10): cpufreq: Add support for per-policy driver data cpufreq: cpu0: Update Module Author cpufreq: cpu0: don't validate clock on clk_put() cpufreq: cpu0: print relevant error when we defer probe cpufreq: cpu0: use dev_{err|warn|dbg} instead of pr_{err|warn|debug} cpufreq: cpu0: Move per-cluster initialization code to ->init() cpufreq: cpu0: try regulators with name "cpu-supply" cpufreq: cpu0: Make allocate_resources() work for any CPU cpufreq: cpu0: rename driver and internals to 'cpufreq_generic' cpufreq: generic: set platform_{driver|device} '.name' to 'cpufreq-generic' .../{cpufreq-cpu0.txt => cpufreq-generic.txt} | 8 +- arch/arm/mach-imx/imx27-dt.c | 2 +- arch/arm/mach-imx/mach-imx51.c | 2 +- arch/arm/mach-omap2/pm.c | 2 +- arch/arm/mach-shmobile/board-ape6evm-reference.c | 2 +- arch/arm/mach-shmobile/cpufreq.c | 2 +- arch/arm/mach-shmobile/setup-sh73a0.c | 4 +- arch/arm/mach-zynq/common.c | 2 +- drivers/cpufreq/Kconfig | 10 +- drivers/cpufreq/Kconfig.arm | 2 +- drivers/cpufreq/Makefile | 2 +- drivers/cpufreq/cpufreq-cpu0.c | 248 -------------- drivers/cpufreq/cpufreq-generic.c | 363 +++++++++++++++++++++ drivers/cpufreq/exynos4210-cpufreq.c | 2 +- drivers/cpufreq/exynos4x12-cpufreq.c | 2 +- drivers/cpufreq/exynos5250-cpufreq.c | 2 +- drivers/cpufreq/highbank-cpufreq.c | 6 +- drivers/cpufreq/s5pv210-cpufreq.c | 2 +- include/linux/cpufreq.h | 3 + 19 files changed, 392 insertions(+), 274 deletions(-) rename Documentation/devicetree/bindings/cpufreq/{cpufreq-cpu0.txt => cpufreq-generic.txt} (85%) delete mode 100644 drivers/cpufreq/cpufreq-cpu0.c create mode 100644 drivers/cpufreq/cpufreq-generic.c -- 2.0.3.693.g996b0fd

10 years, 5 months

[PATCH 3.17-rc3] serial: asc: Adopt readl_/writel_relaxed()

by Daniel Thompson

The architectures where this peripheral exists (ARM and SH) have expensive implementations of writel(), reliant on spin locks and explicit L2 cache management. These architectures provide a cheaper writel_relaxed() which is much better suited to peripherals that do not perform DMA. The situation with readl()/readl_relaxed()is similar although less acute. This driver does not use DMA and will be more power efficient and more robust (due to absense of spin locks during console I/O) if it uses the relaxed variants. This change means the driver is no longer portable and therefore no longer suitable for compile testing. Signed-off-by: Daniel Thompson <daniel.thompson(a)linaro.org> Cc: Srinivas Kandagatla <srinivas.kandagatla(a)gmail.com> Cc: Patrice Chotard <patrice.chotard(a)st.com> Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Cc: Jiri Slaby <jslaby(a)suse.cz> Cc: kernel(a)stlinux.com Cc: linux-serial(a)vger.kernel.org Acked-by: Maxime Coquelin <maxime.coquelin(a)st.com> Acked-by: Peter Griffin <peter.griffin(a)linaro.org> --- drivers/tty/serial/Kconfig | 2 +- drivers/tty/serial/st-asc.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index 26cec64d..e9b1735 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -1527,7 +1527,7 @@ config SERIAL_FSL_LPUART_CONSOLE config SERIAL_ST_ASC tristate "ST ASC serial port support" select SERIAL_CORE - depends on ARM || COMPILE_TEST + depends on ARM help This driver is for the on-chip Asychronous Serial Controller on STMicroelectronics STi SoCs. diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c index 8b2d735..adadbc1 100644 --- a/drivers/tty/serial/st-asc.c +++ b/drivers/tty/serial/st-asc.c @@ -151,12 +151,12 @@ static inline struct asc_port *to_asc_port(struct uart_port *port) static inline u32 asc_in(struct uart_port *port, u32 offset) { - return readl(port->membase + offset); + return readl_relaxed(port->membase + offset); } static inline void asc_out(struct uart_port *port, u32 offset, u32 value) { - writel(value, port->membase + offset); + writel_relaxed(value, port->membase + offset); } /* -- 1.9.3

10 years, 5 months

next-20140909 build: 1 failures 42 warnings (next-20140909)

by Build bot for Mark Brown

Tree/Branch: next-20140909 Git describe: next-20140909 Commit: ec86f34b25 Add linux-next specific files for 20140909 Build Time: 54 min 7 sec Passed: 5 / 6 ( 83.33 %) Failed: 1 / 6 ( 16.67 %) Errors: 0 Warnings: 42 Section Mismatches: 0 Failed defconfigs: arm64-allmodconfig Errors: ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 14 warnings 0 mismatches : arm64-allnoconfig 18 warnings 0 mismatches : arm-allmodconfig 2 warnings 0 mismatches : arm-multi_v7_defconfig 8 warnings 0 mismatches : arm64-allmodconfig ------------------------------------------------------------------------------- Warnings Summary: 42 1 arch/arm/configs/multi_v7_defconfig:417:warning: override: reassigning to symbol CPU_FREQ 1 ../net/rds/iw_rdma.c:200:1: warning: the frame size of 1056 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../lib/test-string_helpers.c:293:1: warning: the frame size of 1312 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/usb/renesas_usbhs/common.c:469:25: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 1 ../drivers/tty/isicom.c:1058:240: warning: integer overflow in expression [-Woverflow] 1 ../drivers/staging/vt6655/device_main.c:3007:1: warning: the frame size of 1296 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/staging/rtl8192ee/pci.c:879:5: warning: format '%d' expects argument of type 'int', but argument 3 has type 'sk_buff_data_t' [-Wformat=] 1 ../drivers/staging/rtl8192ee/pci.c:879:5: warning: format '%d' expects argument of type 'int', but argument 2 has type 'sk_buff_data_t' [-Wformat=] 1 ../drivers/staging/bcm/CmHost.c:1564:3: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 1 ../drivers/staging/bcm/CmHost.c:1546:3: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 1 ../drivers/staging/bcm/CmHost.c:1503:3: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 1 ../drivers/scsi/ips.c:210:2: warning: #warning "This driver has only been tested on the x86/ia64/x86_64 platforms" [-Wcpp] 1 ../drivers/power/reset/xgene-reboot.c:80:17: warning: assignment from incompatible pointer type [enabled by default] 1 ../drivers/pci/host/pci-mvebu.c:887:39: warning: 'rtype' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../drivers/net/wireless/hostap/hostap_proc.c:184:2: warning: field width specifier '*' expects argument of type 'int', but argument 3 has type 'size_t' [-Wformat=] 1 ../drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:467:46: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 1 ../drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:307:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 1 ../drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:303:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 1 ../drivers/net/ethernet/dec/tulip/winbond-840.c:910:2: warning: #warning Processor architecture undefined [-Wcpp] 1 ../drivers/net/ethernet/amd/nmclan_cs.c:624:3: warning: 'pcmcia_request_exclusive_irq' is deprecated (declared at ../include/pcmcia/ds.h:213) [-Wdeprecated-declarations] 1 ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1192 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/isdn/hardware/mISDN/w6692.c:1181:75: warning: unsupported argument to '__builtin_return_address' 1 ../drivers/isdn/hardware/mISDN/mISDNipac.c:759:75: warning: unsupported argument to '__builtin_return_address' 1 ../drivers/infiniband/hw/mlx5/mem.c:71:143: warning: comparison of distinct pointer types lacks a cast 1 ../drivers/iio/adc/rockchip_saradc.c:144:6: warning: unused variable 'rate' [-Wunused-variable] 1 ../drivers/block/drbd/drbd_bitmap.c:483:0: warning: "BITS_PER_PAGE_MASK" redefined [enabled by default] 1 ../drivers/block/drbd/drbd_bitmap.c:482:0: warning: "BITS_PER_PAGE" redefined [enabled by default] 1 ../arch/arm64/kernel/insn.c:921:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:861:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:824:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:778:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:735:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:689:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:642:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:599:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:568:18: warning: 'shift' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:552:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:480:2: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:422:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:393:2: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm64/kernel/insn.c:347:7: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../arch/arm/mach-cns3xxx/pcie.c:311:1: warning: the frame size of 1072 bytes is larger than 1024 bytes [-Wframe-larger-than=] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allnoconfig : PASS, 0 errors, 14 warnings, 0 section mismatches Warnings: ../arch/arm64/kernel/insn.c:393:2: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:422:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:480:2: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:347:7: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:568:18: warning: 'shift' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:552:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:599:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:642:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:689:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:735:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:778:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:824:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:861:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ../arch/arm64/kernel/insn.c:921:8: warning: 'insn' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 18 warnings, 0 section mismatches Warnings: ../arch/arm/mach-cns3xxx/pcie.c:311:1: warning: the frame size of 1072 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../lib/test-string_helpers.c:293:1: warning: the frame size of 1312 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/iio/adc/rockchip_saradc.c:144:6: warning: unused variable 'rate' [-Wunused-variable] ../drivers/infiniband/hw/mlx5/mem.c:71:143: warning: comparison of distinct pointer types lacks a cast ../net/rds/iw_rdma.c:200:1: warning: the frame size of 1056 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/isdn/hardware/mISDN/w6692.c:1181:75: warning: unsupported argument to '__builtin_return_address' ../drivers/isdn/hardware/mISDN/mISDNipac.c:759:75: warning: unsupported argument to '__builtin_return_address' ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1192 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/net/ethernet/amd/nmclan_cs.c:624:3: warning: 'pcmcia_request_exclusive_irq' is deprecated (declared at ../include/pcmcia/ds.h:213) [-Wdeprecated-declarations] ../drivers/net/ethernet/dec/tulip/winbond-840.c:910:2: warning: #warning Processor architecture undefined [-Wcpp] ../drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:303:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] ../drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:307:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] ../drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:467:46: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] ../drivers/scsi/ips.c:210:2: warning: #warning "This driver has only been tested on the x86/ia64/x86_64 platforms" [-Wcpp] ../drivers/tty/isicom.c:1058:240: warning: integer overflow in expression [-Woverflow] ../drivers/staging/rtl8192ee/pci.c:879:5: warning: format '%d' expects argument of type 'int', but argument 2 has type 'sk_buff_data_t' [-Wformat=] ../drivers/staging/rtl8192ee/pci.c:879:5: warning: format '%d' expects argument of type 'int', but argument 3 has type 'sk_buff_data_t' [-Wformat=] ../drivers/staging/vt6655/device_main.c:3007:1: warning: the frame size of 1296 bytes is larger than 1024 bytes [-Wframe-larger-than=] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: arch/arm/configs/multi_v7_defconfig:417:warning: override: reassigning to symbol CPU_FREQ ../drivers/pci/host/pci-mvebu.c:887:39: warning: 'rtype' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- arm64-allmodconfig : FAIL, 0 errors, 8 warnings, 0 section mismatches Warnings: ../drivers/block/drbd/drbd_bitmap.c:482:0: warning: "BITS_PER_PAGE" redefined [enabled by default] ../drivers/block/drbd/drbd_bitmap.c:483:0: warning: "BITS_PER_PAGE_MASK" redefined [enabled by default] ../drivers/power/reset/xgene-reboot.c:80:17: warning: assignment from incompatible pointer type [enabled by default] ../drivers/staging/bcm/CmHost.c:1503:3: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] ../drivers/staging/bcm/CmHost.c:1546:3: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] ../drivers/staging/bcm/CmHost.c:1564:3: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] ../drivers/net/wireless/hostap/hostap_proc.c:184:2: warning: field width specifier '*' expects argument of type 'int', but argument 3 has type 'size_t' [-Wformat=] ../drivers/usb/renesas_usbhs/common.c:469:25: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm-allnoconfig arm64-defconfig

10 years, 5 months

next boot: 88 boots: 87 pass, 0 fail, 1 offline (next-20140909)

by Kevin's boot bot

Status report database: http://status.armcloud.us/boot/all/job/next/kernel/next-20140909/ Tree/Branch: next Git describe: next-20140909 Offline boards (unable to connect to serial console) ==================================================== at91-sama5d3_xplained: OFFLINE: arm-sama5_defconfig Full Report =========== arm-shmobile_defconfig ---------------------- emev2-kzm9d 0 min 25.9 sec: PASS arm-davinci_all_defconfig ------------------------- legacy,dm365evm 0 min 18.8 sec: PASS da850-evm 0 min 16.7 sec: PASS arm-tegra_defconfig ------------------- tegra124-jetson-tk1 0 min 23.2 sec: PASS tegra30-beaver 0 min 25.8 sec: PASS arm64-defconfig --------------- legacy,qemu-aarch64 0 min 6.0 sec: PASS arm-multi_v7_defconfig+CONFIG_ARM_LPAE=y ---------------------------------------- tegra124-jetson-tk1 0 min 22.1 sec: PASS sun7i-a20-cubieboard2 0 min 12.8 sec: PASS exynos5420-arndale-octa 0 min 46.1 sec: PASS armada-xp-openblocks-ax3-4 0 min 25.2 sec: PASS exynos5410-smdk5410 0 min 22.3 sec: PASS exynos5800-peach-pi 0 min 32.1 sec: PASS omap5-uevm 0 min 59.7 sec: PASS (Warnings: 1) exynos5422-odroid-xu3 0 min 28.6 sec: PASS (Warnings: 1) exynos5250-arndale 0 min 44.0 sec: PASS vexpress-v2p-ca15 0 min 5.7 sec: PASS arm-mvebu_v7_defconfig+CONFIG_CPU_BIG_ENDIAN=y ---------------------------------------------- armada-xp-openblocks-ax3-4 0 min 24.3 sec: PASS armada-370-mirabox 0 min 19.1 sec: PASS arm-versatile_defconfig ----------------------- legacy,versatilepb 0 min 3.8 sec: PASS arm-multi_v7_defconfig ---------------------- am335x-boneblack 0 min 24.8 sec: PASS armada-370-mirabox 0 min 19.9 sec: PASS sun4i-a10-cubieboard 0 min 19.3 sec: PASS imx6dl-wandboard,wand-solo 0 min 19.6 sec: PASS am335x-bone 0 min 27.5 sec: PASS tegra124-jetson-tk1 0 min 22.0 sec: PASS sun7i-a20-cubieboard2 0 min 12.9 sec: PASS exynos5410-smdk5410 0 min 22.6 sec: PASS omap4-panda 0 min 57.6 sec: PASS imx6q-wandboard 0 min 18.3 sec: PASS imx6dl-wandboard,wand-dual 0 min 19.6 sec: PASS vexpress-v2p-ca15 0 min 5.7 sec: PASS ste-snowball 0 min 28.9 sec: PASS tegra30-beaver 0 min 18.4 sec: PASS omap3-n900 0 min 24.1 sec: PASS qcom-apq8074-dragonboard 0 min 19.0 sec: PASS bcm28155-ap 0 min 28.2 sec: PASS exynos5800-peach-pi 0 min 32.3 sec: PASS omap3-overo-tobi 0 min 26.4 sec: PASS exynos5422-odroid-xu3 0 min 28.8 sec: PASS (Warnings: 1) omap3-overo-storm-tobi 0 min 26.7 sec: PASS omap3-beagle-xm 0 min 50.6 sec: PASS exynos5420-arndale-octa 0 min 46.0 sec: PASS armada-xp-openblocks-ax3-4 0 min 25.1 sec: PASS vexpress-v2p-ca9 0 min 4.9 sec: PASS omap3-beagle 0 min 24.2 sec: PASS omap5-uevm 0 min 56.1 sec: PASS (Warnings: 1) omap4-panda-es 0 min 52.7 sec: PASS exynos5250-arndale 0 min 44.1 sec: PASS zynq-zc702 0 min 24.8 sec: PASS am437x-gp-evm 0 min 20.0 sec: PASS arm-vexpress_defconfig ---------------------- vexpress-v2p-ca9 0 min 4.7 sec: PASS vexpress-v2p-ca15 0 min 5.5 sec: PASS legacy,vexpress-v2p-ca9 0 min 4.4 sec: PASS arm-multi_v7_defconfig+CONFIG_CPU_BIG_ENDIAN=y ---------------------------------------------- armada-xp-openblocks-ax3-4 0 min 26.4 sec: PASS armada-370-mirabox 0 min 20.2 sec: PASS arm-qcom_defconfig ------------------ qcom-apq8074-dragonboard 0 min 17.6 sec: PASS arm-bcm_defconfig ----------------- bcm28155-ap 0 min 24.5 sec: PASS arm-exynos_defconfig -------------------- exynos5420-arndale-octa 0 min 30.6 sec: PASS (Warnings: 1) exynos5422-odroid-xu3 0 min 28.1 sec: PASS (Warnings: 1) exynos5250-arndale 0 min 31.9 sec: PASS exynos5410-smdk5410 0 min 21.5 sec: PASS exynos5800-peach-pi 0 min 26.8 sec: PASS arm-imx_v6_v7_defconfig ----------------------- imx6dl-wandboard,wand-dual 0 min 19.4 sec: PASS imx6dl-wandboard,wand-solo 0 min 19.6 sec: PASS imx6q-wandboard 0 min 18.0 sec: PASS arm-u8500_defconfig ------------------- ste-snowball 0 min 26.8 sec: PASS arm-omap2plus_defconfig ----------------------- omap3-n900 0 min 19.1 sec: PASS am335x-boneblack 0 min 25.4 sec: PASS legacy,omap3-beagle-xm 0 min 54.8 sec: PASS legacy,omap3-beagle 0 min 39.7 sec: PASS (Warnings: 1) am335x-bone 0 min 27.1 sec: PASS omap3-overo-tobi 0 min 25.4 sec: PASS legacy,omap3-overo-storm-tobi 0 min 25.8 sec: PASS omap4-panda 1 min 5.2 sec: PASS omap3-overo-storm-tobi 0 min 25.1 sec: PASS omap5-uevm 1 min 10.0 sec: PASS (Warnings: 1) omap3-beagle-xm 1 min 7.6 sec: PASS omap4-panda-es 1 min 10.4 sec: PASS legacy,omap3-n900 0 min 48.8 sec: PASS (Warnings: 2) am437x-gp-evm 0 min 17.7 sec: PASS omap3-beagle 0 min 37.0 sec: PASS legacy,omap3-overo-tobi 0 min 23.5 sec: PASS (Warnings: 1) arm-sunxi_defconfig ------------------- sun7i-a20-cubieboard2 0 min 12.5 sec: PASS sun4i-a10-cubieboard 0 min 14.5 sec: PASS arm-mvebu_v7_defconfig ---------------------- armada-xp-openblocks-ax3-4 0 min 24.2 sec: PASS armada-370-mirabox 0 min 21.8 sec: PASS arm-sama5_defconfig ------------------- sama5d35ek 0 min 47.9 sec: PASS at91-sama5d3_xplained 0 min 31.5 sec: OFFLINE

10 years, 5 months

[PATCH] arm: prevent BUG_ON in audit_syscall_entry()

by AKASHI Takahiro

BUG_ON() in audit_syscall_entry() will be hit if user issues syscall(-1) while syscall auditing is enabled (that is, by starting auditd). In fact, syscall(-1) just fails (not signaled despite the expectation, this is another minor bug), but the succeeding syscall hits BUG_ON. When auditing syscall(-1), audit_syscall_entry() is called anyway, but audit_syscall_exit() is not called and then 'in_syscall' flag in thread's audit context is kept on. In this way, audit_syscall_entry() against the succeeding syscall will see BUG_ON(in_syscall). This patch fixes this bug by 1) enforcing syscall exit tracing, including audit_syscall_exit(), to be executed in all cases, 2) handling user-issued syscall(-1) with arm_syscall(). Signed-off-by: AKASHI Takahiro <takahiro.akashi(a)linaro.org> --- arch/arm/kernel/entry-common.S | 4 ++-- arch/arm/kernel/ptrace.c | 10 +++++++++- 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index e52fe5a..28d3931 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -426,7 +426,6 @@ ENTRY(vector_swi) local_restart: ldr r10, [tsk, #TI_FLAGS] @ check for syscall tracing stmdb sp!, {r4, r5} @ push fifth and sixth args - tst r10, #_TIF_SYSCALL_WORK @ are we tracing syscalls? bne __sys_trace @@ -476,10 +475,11 @@ __sys_trace: cmp scno, #-1 @ skip the syscall? bne 2b add sp, sp, #S_OFF @ restore stack - b ret_slow_syscall + b __sys_trace_return_skipped __sys_trace_return: str r0, [sp, #S_R0 + S_OFF]! @ save returned r0 +__sys_trace_return_skipped: mov r0, sp bl syscall_trace_exit b ret_slow_syscall diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index 0c27ed6..f3339c8 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -928,9 +928,13 @@ static void tracehook_report_syscall(struct pt_regs *regs, regs->ARM_ip = ip; } +extern int arm_syscall(int, struct pt_regs *); + asmlinkage int syscall_trace_enter(struct pt_regs *regs, int scno) { - current_thread_info()->syscall = scno; + int orig_scno; + + current_thread_info()->syscall = orig_scno = scno; /* Do the secure computing check first; failures should be fast. */ if (secure_computing(scno) == -1) @@ -947,6 +951,10 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs, int scno) audit_syscall_entry(AUDIT_ARCH_ARM, scno, regs->ARM_r0, regs->ARM_r1, regs->ARM_r2, regs->ARM_r3); + /* user-issued syscall of -1 */ + if (scno == -1 && orig_scno == -1) + arm_syscall(scno, regs); + return scno; } -- 1.7.9.5

10 years, 5 months

[PATCH v6 0/5] ARM: EXYNOS: cpuidle: fix AFTR mode on boards with secure firmware enabled

by Bartlomiej Zolnierkiewicz

Hi, This patch series adds support for AFTR idle mode on boards with secure firmware enabled and allows EXYNOS cpuidle driver usage on Exynos4x12 SoCs. It has been tested on Trats2 board (using Exynos4412 SoC with secure firmware enabled) on which AFTR mode reduces power consumption by ~12% when EXYNOS cpuidle driver is enabled (in both cases the default exynos_defconfig config is used and CPU1-3 are offlined). Currently Exynos4412 SoC support is limited to Trats2 board. Depends on: - next-20140904 branch of linux-next kernel tree - "irqchip: Properly fetch the per cpu offset" patch (https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg716674.html) - [PATCH v3 0/5] Firmware-assisted suspend/resume of Exynos SoCs (https://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg35921.html) Changes since v5: - rebased on top of next-20140904 + "irqchip: Properly fetch the per cpu offset" patch (https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg716674.html) [PATCH v3 0/5] Firmware-assisted suspend/resume of Exynos SoCs (https://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg35921.html) - limit Exynos4412 SoC support to Trats2 board for now Changes since v4: - rebased on top of next-20140804 + [PATCH v5][next-20140804] ARM: EXYNOS: Fix suspend/resume sequences (http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg35262.html) [PATCH v2 0/2] Firmware-assisted suspend/resume of Exynos SoCs (http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg34282.html) - call exynos_save_cp15() only on A9 type core (this is needed for the future Exynos3250 SoC support) Changes since v3: - rebased on top of next-20140804 + [PATCH v4][next-20140804] ARM: EXYNOS: Fix suspend/resume sequences (http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg35192.html) [PATCH v2 0/2] Firmware-assisted suspend/resume of Exynos SoCs (http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg34282.html) - (re-)added patch fixing S5P_CENTRAL_SEQ_OPTION register setup Changes since v2: - rebased on top of next-20140708 + [PATCH 5/6] ARM: EXYNOS: Fix suspend/resume sequencies (http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg32809.html) [with rejects fixed] [PATCH 6/6] ARM: EXYNOS: Register cpuidle device only on Exynos4210 and 5250 (http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg32808.html) [PATCH 0/2] Firmware-assisted suspend/resume of Exynos SoCs (http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg32991.html) [with rejects fixed in patch #2] - addressed review comments from Tomasz Figa and Daniel Lezcano Changes since v1: - synced against next-20140602 - added missing Acked-by-s Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics Bartlomiej Zolnierkiewicz (5): ARM: EXYNOS: PM: replace EXYNOS_BOOT_VECTOR_* macros by static inlines ARM: EXYNOS: add AFTR mode support to firmware do_idle method ARM: EXYNOS: cpuidle: add secure firmware support to AFTR mode code ARM: EXYNOS: PM: fix register setup for AFTR mode code ARM: EXYNOS: cpuidle: allow driver usage on Exynos4x12 SoCs arch/arm/include/asm/firmware.h | 2 +- arch/arm/mach-exynos/common.h | 5 ++++ arch/arm/mach-exynos/exynos.c | 5 +++- arch/arm/mach-exynos/firmware.c | 34 ++++++++++++++++------- arch/arm/mach-exynos/pm.c | 60 ++++++++++++++++++++++++----------------- 5 files changed, 71 insertions(+), 35 deletions(-) -- 1.8.2.3

10 years, 5 months

mainline boot: 88 boots: 88 pass, 0 fail (v3.17-rc4-140-g8c68fac)

by Kevin's boot bot

Status report database: http://status.armcloud.us/boot/all/job/mainline/kernel/v3.17-rc4-140-g8c68f… Tree/Branch: mainline Git describe: v3.17-rc4-140-g8c68fac Full Report =========== arm-shmobile_defconfig ---------------------- emev2-kzm9d 0 min 25.8 sec: PASS arm-davinci_all_defconfig ------------------------- legacy,dm365evm 0 min 18.8 sec: PASS da850-evm 0 min 16.6 sec: PASS arm-tegra_defconfig ------------------- tegra124-jetson-tk1 0 min 22.9 sec: PASS tegra30-beaver 0 min 24.4 sec: PASS arm64-defconfig --------------- legacy,qemu-aarch64 0 min 6.1 sec: PASS arm-multi_v7_defconfig+CONFIG_ARM_LPAE=y ---------------------------------------- tegra124-jetson-tk1 0 min 22.0 sec: PASS sun7i-a20-cubieboard2 0 min 12.9 sec: PASS exynos5420-arndale-octa 0 min 47.7 sec: PASS armada-xp-openblocks-ax3-4 0 min 25.4 sec: PASS exynos5410-smdk5410 0 min 22.3 sec: PASS exynos5800-peach-pi 0 min 32.8 sec: PASS omap5-uevm 0 min 54.1 sec: PASS (Warnings: 1) exynos5422-odroid-xu3 0 min 28.7 sec: PASS (Warnings: 1) exynos5250-arndale 0 min 44.1 sec: PASS vexpress-v2p-ca15 0 min 5.6 sec: PASS arm-mvebu_v7_defconfig+CONFIG_CPU_BIG_ENDIAN=y ---------------------------------------------- armada-xp-openblocks-ax3-4 0 min 23.6 sec: PASS armada-370-mirabox 0 min 18.6 sec: PASS arm-versatile_defconfig ----------------------- legacy,versatilepb 0 min 3.7 sec: PASS arm-multi_v7_defconfig ---------------------- am335x-boneblack 0 min 24.8 sec: PASS armada-370-mirabox 0 min 19.9 sec: PASS sun4i-a10-cubieboard 0 min 19.4 sec: PASS imx6dl-wandboard,wand-solo 0 min 19.6 sec: PASS am335x-bone 0 min 27.4 sec: PASS tegra124-jetson-tk1 0 min 22.1 sec: PASS sun7i-a20-cubieboard2 0 min 12.9 sec: PASS exynos5410-smdk5410 0 min 22.4 sec: PASS omap4-panda 0 min 56.5 sec: PASS imx6q-wandboard 0 min 18.2 sec: PASS imx6dl-wandboard,wand-dual 0 min 19.5 sec: PASS vexpress-v2p-ca15 0 min 5.6 sec: PASS ste-snowball 0 min 25.8 sec: PASS tegra30-beaver 0 min 18.2 sec: PASS omap3-n900 0 min 26.1 sec: PASS qcom-apq8074-dragonboard 0 min 18.7 sec: PASS bcm28155-ap 0 min 28.4 sec: PASS exynos5800-peach-pi 0 min 32.3 sec: PASS omap3-overo-tobi 0 min 25.2 sec: PASS exynos5422-odroid-xu3 0 min 28.4 sec: PASS (Warnings: 1) omap3-overo-storm-tobi 0 min 25.2 sec: PASS omap3-beagle-xm 0 min 57.9 sec: PASS exynos5420-arndale-octa 0 min 46.0 sec: PASS armada-xp-openblocks-ax3-4 0 min 25.1 sec: PASS vexpress-v2p-ca9 0 min 4.8 sec: PASS omap3-beagle 0 min 27.8 sec: PASS omap5-uevm 0 min 54.1 sec: PASS (Warnings: 1) omap4-panda-es 0 min 56.9 sec: PASS exynos5250-arndale 0 min 44.1 sec: PASS zynq-zc702 0 min 23.4 sec: PASS am437x-gp-evm 0 min 22.6 sec: PASS arm-vexpress_defconfig ---------------------- vexpress-v2p-ca9 0 min 4.7 sec: PASS vexpress-v2p-ca15 0 min 5.5 sec: PASS legacy,vexpress-v2p-ca9 0 min 4.5 sec: PASS arm-multi_v7_defconfig+CONFIG_CPU_BIG_ENDIAN=y ---------------------------------------------- armada-xp-openblocks-ax3-4 0 min 26.6 sec: PASS armada-370-mirabox 0 min 20.3 sec: PASS arm-qcom_defconfig ------------------ qcom-apq8074-dragonboard 0 min 17.6 sec: PASS arm-bcm_defconfig ----------------- bcm28155-ap 0 min 25.1 sec: PASS arm-exynos_defconfig -------------------- exynos5420-arndale-octa 0 min 30.5 sec: PASS (Warnings: 1) exynos5422-odroid-xu3 0 min 25.6 sec: PASS (Warnings: 1) exynos5250-arndale 0 min 31.8 sec: PASS exynos5410-smdk5410 0 min 21.8 sec: PASS exynos5800-peach-pi 0 min 29.2 sec: PASS arm-imx_v6_v7_defconfig ----------------------- imx6dl-wandboard,wand-dual 0 min 19.4 sec: PASS imx6dl-wandboard,wand-solo 0 min 19.4 sec: PASS imx6q-wandboard 0 min 18.1 sec: PASS arm-u8500_defconfig ------------------- ste-snowball 0 min 23.8 sec: PASS arm-omap2plus_defconfig ----------------------- omap3-n900 0 min 18.9 sec: PASS am335x-boneblack 0 min 26.4 sec: PASS legacy,omap3-beagle-xm 0 min 56.7 sec: PASS legacy,omap3-beagle 0 min 39.8 sec: PASS (Warnings: 1) am335x-bone 0 min 27.2 sec: PASS omap3-overo-tobi 0 min 25.2 sec: PASS legacy,omap3-overo-storm-tobi 0 min 25.9 sec: PASS omap4-panda 1 min 10.4 sec: PASS omap3-overo-storm-tobi 0 min 24.8 sec: PASS omap5-uevm 1 min 5.8 sec: PASS (Warnings: 1) omap3-beagle-xm 1 min 2.7 sec: PASS omap4-panda-es 1 min 16.6 sec: PASS legacy,omap3-n900 0 min 48.4 sec: PASS (Warnings: 2) am437x-gp-evm 0 min 17.4 sec: PASS omap3-beagle 0 min 38.5 sec: PASS legacy,omap3-overo-tobi 0 min 23.3 sec: PASS (Warnings: 1) arm-sunxi_defconfig ------------------- sun7i-a20-cubieboard2 0 min 12.7 sec: PASS sun4i-a10-cubieboard 0 min 14.7 sec: PASS arm-mvebu_v7_defconfig ---------------------- armada-xp-openblocks-ax3-4 0 min 23.8 sec: PASS armada-370-mirabox 0 min 21.1 sec: PASS arm-sama5_defconfig ------------------- sama5d35ek 0 min 17.6 sec: PASS at91-sama5d3_xplained 0 min 42.8 sec: PASS

10 years, 5 months

master build: 0 failures 28 warnings (v3.17-rc4-140-g8c68fac)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v3.17-rc4-140-g8c68fac Commit: 8c68face55 Merge branch 'for_linus_urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Build Time: 21 min 37 sec Passed: 6 / 6 (100.00 %) Failed: 0 / 6 ( 0.00 %) Errors: 0 Warnings: 28 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 2 warnings 0 mismatches : arm64-allnoconfig 18 warnings 0 mismatches : arm-allmodconfig 1 warnings 0 mismatches : arm-multi_v7_defconfig 7 warnings 0 mismatches : arm64-allmodconfig ------------------------------------------------------------------------------- Warnings Summary: 28 1 ../sound/soc/fsl/fsl_sai.c:337:7: warning: large integer implicitly truncated to unsigned type [-Woverflow] 1 ../net/rds/iw_rdma.c:200:1: warning: the frame size of 1056 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/tty/isicom.c:1058:240: warning: integer overflow in expression [-Woverflow] 1 ../drivers/staging/wlan-ng/prism2fw.c:792:1: warning: the frame size of 1072 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/staging/vt6655/device_main.c:3091:1: warning: the frame size of 1296 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/staging/rtl8192ee/pci.c:885:5: warning: format '%d' expects argument of type 'int', but argument 3 has type 'sk_buff_data_t' [-Wformat=] 1 ../drivers/staging/rtl8192ee/pci.c:885:5: warning: format '%d' expects argument of type 'int', but argument 2 has type 'sk_buff_data_t' [-Wformat=] 1 ../drivers/staging/dgnc/dgnc_tty.c:572:1: warning: the frame size of 1048 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/staging/bcm/CmHost.c:1564:3: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 1 ../drivers/staging/bcm/CmHost.c:1546:3: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 1 ../drivers/staging/bcm/CmHost.c:1503:3: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 1 ../drivers/scsi/ips.c:210:2: warning: #warning "This driver has only been tested on the x86/ia64/x86_64 platforms" [-Wcpp] 1 ../drivers/power/reset/xgene-reboot.c:80:17: warning: assignment from incompatible pointer type [enabled by default] 1 ../drivers/pci/host/pci-mvebu.c:887:39: warning: 'rtype' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:467:46: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 1 ../drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:307:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 1 ../drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:303:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 1 ../drivers/net/ethernet/dec/tulip/winbond-840.c:910:2: warning: #warning Processor architecture undefined [-Wcpp] 1 ../drivers/net/ethernet/amd/nmclan_cs.c:624:3: warning: 'pcmcia_request_exclusive_irq' is deprecated (declared at ../include/pcmcia/ds.h:213) [-Wdeprecated-declarations] 1 ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1192 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/isdn/hardware/mISDN/w6692.c:1181:75: warning: unsupported argument to '__builtin_return_address' 1 ../drivers/isdn/hardware/mISDN/mISDNipac.c:759:75: warning: unsupported argument to '__builtin_return_address' 1 ../drivers/irqchip/irq-gic-v3.c:203:12: warning: 'gic_peek_irq' defined but not used [-Wunused-function] 1 ../drivers/irqchip/irq-gic-v3.c:132:13: warning: 'gic_write_sgi1r' defined but not used [-Wunused-function] 1 ../drivers/infiniband/hw/mlx5/mem.c:71:143: warning: comparison of distinct pointer types lacks a cast 1 ../drivers/block/drbd/drbd_bitmap.c:483:0: warning: "BITS_PER_PAGE_MASK" redefined [enabled by default] 1 ../drivers/block/drbd/drbd_bitmap.c:482:0: warning: "BITS_PER_PAGE" redefined [enabled by default] 1 ../arch/arm/mach-cns3xxx/pcie.c:311:1: warning: the frame size of 1072 bytes is larger than 1024 bytes [-Wframe-larger-than=] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allnoconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../drivers/irqchip/irq-gic-v3.c:132:13: warning: 'gic_write_sgi1r' defined but not used [-Wunused-function] ../drivers/irqchip/irq-gic-v3.c:203:12: warning: 'gic_peek_irq' defined but not used [-Wunused-function] ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 18 warnings, 0 section mismatches Warnings: ../arch/arm/mach-cns3xxx/pcie.c:311:1: warning: the frame size of 1072 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/infiniband/hw/mlx5/mem.c:71:143: warning: comparison of distinct pointer types lacks a cast ../drivers/isdn/hardware/mISDN/w6692.c:1181:75: warning: unsupported argument to '__builtin_return_address' ../drivers/isdn/hardware/mISDN/mISDNipac.c:759:75: warning: unsupported argument to '__builtin_return_address' ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1192 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../net/rds/iw_rdma.c:200:1: warning: the frame size of 1056 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/net/ethernet/amd/nmclan_cs.c:624:3: warning: 'pcmcia_request_exclusive_irq' is deprecated (declared at ../include/pcmcia/ds.h:213) [-Wdeprecated-declarations] ../drivers/net/ethernet/dec/tulip/winbond-840.c:910:2: warning: #warning Processor architecture undefined [-Wcpp] ../drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:303:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] ../drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:307:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] ../drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:467:46: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] ../drivers/scsi/ips.c:210:2: warning: #warning "This driver has only been tested on the x86/ia64/x86_64 platforms" [-Wcpp] ../drivers/staging/dgnc/dgnc_tty.c:572:1: warning: the frame size of 1048 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/tty/isicom.c:1058:240: warning: integer overflow in expression [-Woverflow] ../drivers/staging/rtl8192ee/pci.c:885:5: warning: format '%d' expects argument of type 'int', but argument 2 has type 'sk_buff_data_t' [-Wformat=] ../drivers/staging/rtl8192ee/pci.c:885:5: warning: format '%d' expects argument of type 'int', but argument 3 has type 'sk_buff_data_t' [-Wformat=] ../drivers/staging/vt6655/device_main.c:3091:1: warning: the frame size of 1296 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/staging/wlan-ng/prism2fw.c:792:1: warning: the frame size of 1072 bytes is larger than 1024 bytes [-Wframe-larger-than=] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../drivers/pci/host/pci-mvebu.c:887:39: warning: 'rtype' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- arm64-allmodconfig : PASS, 0 errors, 7 warnings, 0 section mismatches Warnings: ../drivers/block/drbd/drbd_bitmap.c:482:0: warning: "BITS_PER_PAGE" redefined [enabled by default] ../drivers/block/drbd/drbd_bitmap.c:483:0: warning: "BITS_PER_PAGE_MASK" redefined [enabled by default] ../sound/soc/fsl/fsl_sai.c:337:7: warning: large integer implicitly truncated to unsigned type [-Woverflow] ../drivers/power/reset/xgene-reboot.c:80:17: warning: assignment from incompatible pointer type [enabled by default] ../drivers/staging/bcm/CmHost.c:1503:3: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] ../drivers/staging/bcm/CmHost.c:1546:3: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] ../drivers/staging/bcm/CmHost.c:1564:3: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm-allnoconfig arm64-defconfig

10 years, 5 months

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linaro-kernel September 2014