linaro-dev April 2012

linaro-dev@lists.linaro.org

113 participants
85 discussions

by YongQin Liu

Hi, All Can anyone help to answer this question? ---------- Forwarded message ---------- From: Linas Chang <shchang(a)marvell.com> Date: 24 April 2012 19:11 Subject: GB question To: YongQin Liu <yongqin.liu(a)linaro.org> Hi YongQin**** ** ** Sorry ,I have new question**** ** ** I try to burn GB pre-build image to snowboard**** ** ** I found there are two type image one is for v5 another is for v7**** ** ** How to know our board belong to v5 or v7**** ** ** I have read ics instruction like**** ** ** http://releases.linaro.org/12.03/android/images/snowball-ics-gcc46-igloo-st… **** ** ** but I don’t find any doc mention how to used GB pre-build binary , it like ics?**** ** ** We also find v5 and v7 also has two images **** ** ** For v5 example , there are **** ** ** snowball-android-v5-20120201-2.img.gz<http://igloocommunity.org/download/android/gb/images/20120201/snowball-andr…> **** snowball-android-v5-20120201.img.gz<http://igloocommunity.org/download/android/gb/images/20120201/snowball-andr…> **** ** ** which one is correct or I need to combine both , if need to combine both , how to do that?**** ** ** ** ** Linas****

12 years

[ANN] Android restricted-access builds

by Paul Sokolovsky

Hello, Linaro Infrastructure group is glad to announce support for restricted-access builds for Linaro Android. Such builds will allow us to adhere to our members' licensing and business restrictions for limited-access features, while still as much as possible to follow established Linaro open process, and let general public to be in loop on the upcoming great new features for the ARM platform. Restricted builds are used immediately for ongoing big.LITTLE enablement work. Restricted builds are available in our standard Android Build System, in a separate tab: https://android-build.linaro.org/#builds=restricted Members of the Launchpad group "linaro-android-restricted" are able to setup new builds (please note that this group doesn't allow direct access to restricted source code or downloads, only gives the ability to establish a restricted build). Administrators of the group include Alexander Sack and Zach Pfeffer, they should be contacted for membership requests. To set up a restricted build, select "linaro-android-restricted" as the owning group in the dropdown on "New build" page (this is UI change from previously available checkbox to create an official build, all choices are now available in dropdown). As second step, add/replace value of the following build config variable: BUILD_TYPE=build-android-restricted If you have a question regarding this functionality or found a bug, please submit it directly or via the bug tracker at: https://bugs.launchpad.net/linaro-android-infrastructure Thanks, Paul Linaro.org | Open source software for ARM SoCs Follow Linaro: http://www.facebook.com/pages/Linaro http://twitter.com/#!/linaroorg - http://www.linaro.org/linaro-blog

12 years

[PATCH 0/3] Add imx cpuidle

by Robert Lee

Add common imx cpuidle initialization functionality and add a i.MX5 and i.MX6 platform cpuidle implementation. Robert Lee (3): ARM: imx: Add common imx cpuidle init functionality. ARM: imx: Add imx5 cpuidle driver ARM: imx: Add imx6q cpuidle driver arch/arm/mach-imx/Makefile | 4 +- arch/arm/mach-imx/cpuidle-imx5.c | 55 ++++++++++++++++++ arch/arm/mach-imx/cpuidle-imx6q.c | 33 +++++++++++ arch/arm/mach-imx/mach-imx6q.c | 2 + arch/arm/mach-imx/mm-imx5.c | 16 ++++-- arch/arm/plat-mxc/Makefile | 2 + arch/arm/plat-mxc/cpuidle.c | 89 ++++++++++++++++++++++++++++++ arch/arm/plat-mxc/include/mach/common.h | 1 + arch/arm/plat-mxc/include/mach/cpuidle.h | 26 +++++++++ 9 files changed, 222 insertions(+), 6 deletions(-) create mode 100644 arch/arm/mach-imx/cpuidle-imx5.c create mode 100644 arch/arm/mach-imx/cpuidle-imx6q.c create mode 100644 arch/arm/plat-mxc/cpuidle.c create mode 100644 arch/arm/plat-mxc/include/mach/cpuidle.h -- 1.7.10

12 years

[RFC PATCH] hrtimers: system-wide and per-task hrtimer slacks

by Dmitry Antipov

This patch proposes a system-wide sysctl-aware default for the high-resolution timer slack value, which may be changed from 0 to HRTIMER_MAX_SLACK nanoseconds. Default system-wide and per-task values are HRTIMER_DEFAULT_SLACK. Per-task value isn't inherited across fork(); instead, newborn task uses system-wide value by default, and newborn thread uses it's group leader value. Signed-off-by: Dmitry Antipov <dmitry.antipov(a)linaro.org> --- Documentation/sysctl/kernel.txt | 8 ++++++++ include/linux/hrtimer.h | 11 +++++++++++ include/linux/init_task.h | 2 +- include/linux/sched.h | 11 ++++++++--- kernel/fork.c | 9 +++++++-- kernel/futex.c | 4 ++-- kernel/hrtimer.c | 10 +++++++--- kernel/sys.c | 9 ++++----- kernel/sysctl.c | 10 ++++++++++ 9 files changed, 58 insertions(+), 16 deletions(-) diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index 6d78841..83b63ed 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -606,6 +606,14 @@ can be ORed together: ============================================================== +timer_slack: + +This value can be used to query and set the default slack for +high-resolution timers, in nanoseconds. The default value is 50 +microseconds, and can be changed from 0 nanoseconds to 1 millisecond. + +============================================================== + unknown_nmi_panic: The value in this file affects behavior of handling NMI. When the diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index fd0dc30..77169b7 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -24,6 +24,16 @@ #include <linux/timer.h> #include <linux/timerqueue.h> +/* + * Default system-wide and per-task hrtimer slack, in nanoseconds. + */ +#define HRTIMER_DEFAULT_SLACK 50000 + +/* + * Reasonable limit for hrtimer slack. + */ +#define HRTIMER_MAX_SLACK 1000000 + struct hrtimer_clock_base; struct hrtimer_cpu_base; @@ -323,6 +333,7 @@ extern ktime_t ktime_get_monotonic_offset(void); DECLARE_PER_CPU(struct tick_device, tick_cpu_device); +extern int default_timer_slack_ns; /* Exported timer functions: */ diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 9c66b1a..b29be0d 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -178,7 +178,7 @@ extern struct cred init_cred; .journal_info = NULL, \ .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \ - .timer_slack_ns = 50000, /* 50 usec default slack */ \ + .timer_slack_ns = HRTIMER_DEFAULT_SLACK, \ .pids = { \ [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \ [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \ diff --git a/include/linux/sched.h b/include/linux/sched.h index 9b13f79..811e034 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1551,11 +1551,11 @@ struct task_struct { struct latency_record latency_record[LT_SAVECOUNT]; #endif /* - * time slack values; these are used to round up poll() and - * select() etc timeout values. These are in nanoseconds. + * High-resolution timer slack value, in nanoseconds. + * Used to round up poll()/select(), nanosleep, futex + * waiting, etc. timeout values of non-realtime tasks. */ unsigned long timer_slack_ns; - unsigned long default_timer_slack_ns; struct list_head *scm_work_list; #ifdef CONFIG_FUNCTION_GRAPH_TRACER @@ -2631,6 +2631,11 @@ static inline int spin_needbreak(spinlock_t *lock) #endif } +static inline unsigned long task_timer_slack(struct task_struct *tsk) +{ + return rt_task(tsk) ? 0 : tsk->timer_slack_ns; +} + /* * Thread group CPU time accounting. */ diff --git a/kernel/fork.c b/kernel/fork.c index b77fd55..6aaff93 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1164,8 +1164,13 @@ static struct task_struct *copy_process(unsigned long clone_flags, #if defined(SPLIT_RSS_COUNTING) memset(&p->rss_stat, 0, sizeof(p->rss_stat)); #endif - - p->default_timer_slack_ns = current->timer_slack_ns; + /* + * New thread inherits the slack from the group + * leader. New process uses system-default slack. + */ + p->timer_slack_ns = (clone_flags & CLONE_THREAD) ? + current->group_leader->timer_slack_ns : + default_timer_slack_ns; task_io_accounting_init(&p->ioac); acct_clear_integrals(p); diff --git a/kernel/futex.c b/kernel/futex.c index 1614be2..a0d302d 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -1887,7 +1887,7 @@ static int futex_wait(u32 __user *uaddr, unsigned int flags, u32 val, HRTIMER_MODE_ABS); hrtimer_init_sleeper(to, current); hrtimer_set_expires_range_ns(&to->timer, *abs_time, - current->timer_slack_ns); + task_timer_slack(current)); } retry: @@ -2281,7 +2281,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags, HRTIMER_MODE_ABS); hrtimer_init_sleeper(to, current); hrtimer_set_expires_range_ns(&to->timer, *abs_time, - current->timer_slack_ns); + task_timer_slack(current)); } /* diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index ae34bf5..0c56fec 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -51,6 +51,12 @@ #include <trace/events/timer.h> /* + * Default hrtimer slack value, in nanoseconds. May be changed in + * [0..HRTIMER_MAX_SLACK] range through kernel.timer_slack sysctl. + */ +__read_mostly int default_timer_slack_ns = HRTIMER_DEFAULT_SLACK; + +/* * The timer bases: * * There are more clockids then hrtimer bases. Thus, we index @@ -1564,9 +1570,7 @@ long hrtimer_nanosleep(struct timespec *rqtp, struct timespec __user *rmtp, int ret = 0; unsigned long slack; - slack = current->timer_slack_ns; - if (rt_task(current)) - slack = 0; + slack = task_timer_slack(current); hrtimer_init_on_stack(&t.timer, clockid, mode); hrtimer_set_expires_range_ns(&t.timer, timespec_to_ktime(*rqtp), slack); diff --git a/kernel/sys.c b/kernel/sys.c index 4070153..ac32846 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -22,6 +22,7 @@ #include <linux/device.h> #include <linux/key.h> #include <linux/times.h> +#include <linux/hrtimer.h> #include <linux/posix-timers.h> #include <linux/security.h> #include <linux/dcookies.h> @@ -1917,12 +1918,10 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, error = current->timer_slack_ns; break; case PR_SET_TIMERSLACK: - if (arg2 <= 0) - current->timer_slack_ns = - current->default_timer_slack_ns; - else + if (arg2 <= HRTIMER_MAX_SLACK) current->timer_slack_ns = arg2; - error = 0; + else + error = -EINVAL; break; case PR_MCE_KILL: if (arg4 | arg5) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index f487f25..2cd42c6 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -136,6 +136,7 @@ static int min_percpu_pagelist_fract = 8; static int ngroups_max = NGROUPS_MAX; static const int cap_last_cap = CAP_LAST_CAP; +static const int slack_max = HRTIMER_MAX_SLACK; #ifdef CONFIG_INOTIFY_USER #include <linux/inotify.h> @@ -1004,6 +1005,15 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_dointvec, }, #endif + { + .procname = "timer_slack", + .data = &default_timer_slack_ns, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &zero, + .extra2 = &slack_max, + }, { } }; -- 1.7.7.6

12 years

[PATCH V2 0/6] thermal: exynos: Add kernel thermal support for exynos platform

by Amit Daniel Kachhap

Changes since V1: *Moved the sensor driver to driver/thermal folder from driver/hwmon folder as suggested by Mark Brown and Guenter Roeck *Added notifier support to notify the registered drivers of any cpu cooling action. The driver can modify the default cooling behaviour(eg set different max clip frequency). *The percentage based frequency replaced with absolute clipped frequency. *Some more conditional checks when setting max frequency. *Renamed the new trip type THERMAL_TRIP_STATE_ACTIVE to THERMAL_TRIP_STATE_INSTANCE *Many review comments from R, Durgadoss <durgadoss.r(a)intel.com> and eduardo.valentin(a)ti.com implemented. *Removed cooling stats through debugfs patch *The V1 based can be found here, https://lkml.org/lkml/2012/2/22/123 http://lkml.org/lkml/2012/3/3/32 Changes since RFC: *Changed the cpu cooling registration/unregistration API's to instance based *Changed the STATE_ACTIVE trip type to pass correct instance id *Adding support to restore back the policy->max_freq after doing frequency clipping. *Moved the trip cooling stats from sysfs node to debugfs node as suggested by Greg KH greg(a)kroah.com *Incorporated several review comments from eduardo.valentin(a)ti.com *Moved the Temperature sensor driver from driver/hwmon/ to driver/mfd as discussed with Guenter Roeck <guenter.roeck(a)ericsson.com> and Donggeun Kim <dg77.kim(a)samsung.com> (https://lkml.org/lkml/2012/1/5/7) *Some changes according to the changes in common cpu cooling APIs *The RFC based patches can be found here, https://lkml.org/lkml/2011/12/13/186 https://lkml.org/lkml/2011/12/21/169 Brief Description: 1) The generic cooling devices code is placed inside driver/thermal/* as placing inside acpi folder will need un-necessary enabling of acpi code. This codes is architecture independent. 2) This patchset adds a new trip type THERMAL_TRIP_STATE_INSTANCE which passes cooling device instance number and may be helpful for cpufreq cooling devices to take the correct cooling action. This trip type avoids the temperature comparision check again inside the cooling handler. 3) This patchset adds generic cpu cooling low level implementation through frequency clipping and cpu hotplug. In future, other cpu related cooling devices may be added here. An ACPI version of this already exists (drivers/acpi/processor_thermal.c). But this will be useful for platforms like ARM using the generic thermal interface along with the generic cpu cooling devices. The cooling device registration API's return cooling device pointers which can be easily binded with the thermal zone trip points. The important APIs exposed are, a)struct thermal_cooling_device *cpufreq_cooling_register( struct freq_clip_table *tab_ptr, unsigned int tab_size, const struct cpumask *mask_val) b)void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev) 4) Samsung exynos platform thermal implementation is done using the generic cpu cooling APIs and the new trip type. The temperature sensor driver present in the hwmon folder(registered as hwmon driver) is moved to thermal folder and registered as a thermal driver. All this patchset is based on Kernel version 3.3-rc7 A simple data/control flow diagrams is shown below, Core Linux thermal <-----> Exynos thermal interface <----- Temperature Sensor | | \|/ | Cpufreq cooling device <--------------- Amit Daniel Kachhap (6): thermal: Add a new trip type to use cooling device instance number thermal: Add generic cpufreq cooling implementation thermal: Add generic cpuhotplug cooling implementation hwmon: exynos4: Move thermal sensor driver to driver/thermal directory thermal: exynos4: Register the tmu sensor with the kernel thermal layer ARM: exynos4: Add thermal sensor driver platform device support Documentation/hwmon/exynos4_tmu | 81 --- Documentation/thermal/cpu-cooling-api.txt | 76 +++ Documentation/thermal/exynos4_tmu | 52 ++ Documentation/thermal/sysfs-api.txt | 4 +- arch/arm/mach-exynos/Kconfig | 11 + arch/arm/mach-exynos/Makefile | 1 + arch/arm/mach-exynos/clock.c | 4 + arch/arm/mach-exynos/dev-tmu.c | 39 ++ arch/arm/mach-exynos/include/mach/irqs.h | 2 + arch/arm/mach-exynos/include/mach/map.h | 1 + arch/arm/mach-exynos/mach-origen.c | 1 + arch/arm/plat-samsung/include/plat/devs.h | 1 + drivers/hwmon/Kconfig | 10 - drivers/hwmon/Makefile | 1 - drivers/hwmon/exynos4_tmu.c | 514 ------------------- drivers/thermal/Kconfig | 21 + drivers/thermal/Makefile | 2 + drivers/thermal/cpu_cooling.c | 529 +++++++++++++++++++ drivers/thermal/exynos4_thermal.c | 790 +++++++++++++++++++++++++++++ drivers/thermal/thermal_sys.c | 45 ++- include/linux/cpu_cooling.h | 78 +++ include/linux/platform_data/exynos4_tmu.h | 7 + include/linux/thermal.h | 1 + 23 files changed, 1660 insertions(+), 611 deletions(-) delete mode 100644 Documentation/hwmon/exynos4_tmu create mode 100644 Documentation/thermal/cpu-cooling-api.txt create mode 100644 Documentation/thermal/exynos4_tmu create mode 100644 arch/arm/mach-exynos/dev-tmu.c delete mode 100644 drivers/hwmon/exynos4_tmu.c create mode 100644 drivers/thermal/cpu_cooling.c create mode 100644 drivers/thermal/exynos4_thermal.c create mode 100644 include/linux/cpu_cooling.h

12 years

Returned mail: Data format error

by customerservice-anz＠redhat.com

This message was not delivered due to the following reason(s): Your message was not delivered because the destination server was unreachable within the allowed queue period. The amount of time a message is queued before it is returned depends on local configura- tion parameters. Most likely there is a network problem that prevented delivery, but it is also possible that the computer is turned off, or does not have a mail system running right now. Your message could not be delivered within 1 days: Server 137.30.247.126 is not responding. The following recipients could not receive this message: <linaro-dev(a)lists.linaro.org> Please reply to postmaster(a)redhat.com if you feel this message to be in error.

12 years

[PATCH] ARM: ux500: add the cpuidle driver for WFI and ARM retention

by Daniel Lezcano

This patch adds the cpuidle driver for the ux500 SoC. The boards saves 12mA with these states. It is based on the latest cpuidle consolidation from Robert Lee. The cpu can go to retention only if the other core is in WFI. If the other cpu is in WFI and we decoupled the gic from the cores, then we have the guarantee, it won't be wake up. It is up to the prcmu firmware to recouple the gic automatically after the power state mode is selected. Signed-off-by: Daniel Lezcano <daniel.lezcano(a)linaro.org> --- arch/arm/mach-ux500/Makefile | 1 + arch/arm/mach-ux500/cpuidle.c | 171 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 172 insertions(+), 0 deletions(-) create mode 100644 arch/arm/mach-ux500/cpuidle.c diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile index fc7db5d..3b86b61 100644 --- a/arch/arm/mach-ux500/Makefile +++ b/arch/arm/mach-ux500/Makefile @@ -4,6 +4,7 @@ obj-y := clock.o cpu.o devices.o devices-common.o \ id.o usb.o timer.o +obj-$(CONFIG_CPU_IDLE) += cpuidle.o obj-$(CONFIG_CACHE_L2X0) += cache-l2x0.o obj-$(CONFIG_UX500_SOC_DB8500) += cpu-db8500.o devices-db8500.o obj-$(CONFIG_MACH_MOP500) += board-mop500.o board-mop500-sdi.o \ diff --git a/arch/arm/mach-ux500/cpuidle.c b/arch/arm/mach-ux500/cpuidle.c new file mode 100644 index 0000000..b54884bd --- /dev/null +++ b/arch/arm/mach-ux500/cpuidle.c @@ -0,0 +1,171 @@ +/* + * Copyright (c) 2012 Linaro : Daniel Lezcano <daniel.lezcano(a)linaro.org> (IBM) + * + * Based on the work of Rickard Andersson <rickard.andersson(a)stericsson.com> + * and Jonas Aaberg <jonas.aberg(a)stericsson.com>. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/cpuidle.h> +#include <linux/clockchips.h> +#include <linux/spinlock.h> +#include <linux/atomic.h> +#include <linux/smp.h> +#include <linux/mfd/dbx500-prcmu.h> + +#include <asm/cpuidle.h> +#include <asm/proc-fns.h> + +static atomic_t master = ATOMIC_INIT(0); +static DEFINE_SPINLOCK(master_lock); +static DEFINE_PER_CPU(struct cpuidle_device, ux500_cpuidle_device); + +static inline int ux500_enter_idle(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index) +{ + int this_cpu = smp_processor_id(); + bool recouple = false; + + clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &this_cpu); + + if (atomic_inc_return(&master) == num_online_cpus()) { + + /* With this lock, we prevent the other cpu to exit and enter + * this function again and become the master */ + if (!spin_trylock(&master_lock)) + goto wfi; + + /* decouple the gic from the A9 cores */ + if (prcmu_gic_decouple()) + goto out; + + /* If an error occur, we will have to recouple the gic + * manually */ + recouple = true; + + /* At this state, as the gic is decoupled, if the other + * cpu is in WFI, we have the guarantee it won't be wake + * up, so we can safely go to retention */ + if (!prcmu_is_cpu_in_wfi(this_cpu ? 0 : 1)) + goto out; + + /* The prcmu will be in charge of watching the interrupts + * and wake up the cpus */ + if (prcmu_copy_gic_settings()) + goto out; + + /* Check in the meantime an interrupt did + * not occur on the gic ... */ + if (prcmu_gic_pending_irq()) + goto out; + + /* ... and the prcmu */ + if (prcmu_pending_irq()) + goto out; + + /* Go to the retention state, the prcmu will wait for the + * cpu to go WFI and this is what happens after exiting this + * 'master' critical section */ + if (prcmu_set_power_state(PRCMU_AP_IDLE, true, true)) + goto out; + + /* When we switch to retention, the prcmu is in charge + * of recoupling the gic automatically */ + recouple = false; + + spin_unlock(&master_lock); + } +wfi: + cpu_do_idle(); +out: + atomic_dec(&master); + + if (recouple) { + prcmu_gic_recouple(); + spin_unlock(&master_lock); + } + + clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &this_cpu); + + return index; +} + +static struct cpuidle_driver ux500_idle_driver = { + .name = "ux500_idle", + .owner = THIS_MODULE, + .en_core_tk_irqen = 1, + .states = { + ARM_CPUIDLE_WFI_STATE, + { + .enter = ux500_enter_idle, + .exit_latency = 70, + .target_residency = 260, + .flags = CPUIDLE_FLAG_TIME_VALID, + .name = "ApIdle", + .desc = "ARM Retention", + }, + }, + .safe_state_index = 0, + .state_count = 2, +}; + +/* + * For each cpu, setup the broadcast timer because we will + * need to migrate the timers for the states >= ApIdle. + */ +static void ux500_setup_broadcast_timer(void *arg) +{ + int cpu = smp_processor_id(); + clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ON, &cpu); +} + +int __init ux500_idle_init(void) +{ + int ret, cpu; + struct cpuidle_device *device; + + /* Configure wake up reasons */ + prcmu_enable_wakeups(PRCMU_WAKEUP(ARM) | PRCMU_WAKEUP(RTC) | + PRCMU_WAKEUP(ABB)); + + /* + * Configure the timer broadcast for each cpu, that must + * be done from the cpu context, so we use a smp cross + * call with 'on_each_cpu'. + */ + on_each_cpu(ux500_setup_broadcast_timer, NULL, 1); + + ret = cpuidle_register_driver(&ux500_idle_driver); + if (ret) { + printk(KERN_ERR "failed to register ux500 idle driver\n"); + return ret; + } + + for_each_online_cpu(cpu) { + device = &per_cpu(ux500_cpuidle_device, cpu); + device->cpu = cpu; + ret = cpuidle_register_device(device); + if (ret) { + printk(KERN_ERR "Failed to register cpuidle " + "device for cpu%d\n", cpu); + goto out_unregister; + } + } +out: + return ret; + +out_unregister: + for_each_online_cpu(cpu) { + device = &per_cpu(ux500_cpuidle_device, cpu); + cpuidle_unregister_device(device); + } + + cpuidle_unregister_driver(&ux500_idle_driver); + goto out; +} + +device_initcall(ux500_idle_init); -- 1.7.5.4

12 years

adding error handling for the script installing binary

by Akira Tsukamoto

Hi, I have reports from some of the Japanese user for the script to install binary blob into SD card that it completes even failing downloading binary files and being confusing. I made a quick fix and attached the patch for the panda board. The patch prevents executing when it has error downloading binary blob. The script is: install-binaries-4.0.3.sh I also experienced that "wget" fails to download the file in Japan (could be having thin Internet connection to the URL) but the current script continues executing and finishes it without any message without the file being downloaded successfully from the url. Ideally we should have md5 checksum for the downloaded file but I think it could be considered in the future. Regards, Akira ---------------------------------- --- panda-ics-gcc46-tilt-tracking-blob-234/install-binaries-4.0.3.sh 2012-04-18 19:52:33.000000000 +0900 +++ panda-ics-gcc46-tilt-tracking-blob-12.03-release-6/install-binaries-4.0.3.sh 2012-04-23 11:27:43.000000000 +0900 @@ -1,14 +1,23 @@ -#!/bin/bash -x +#!/bin/bash + +DL_URL='https://dl.google.com/dl/android/aosp/imgtec-panda-iml74k-cfb7bdad.tgz' + +err_handle() { + echo "Error, please try again" + exit 1 +} + +trap 'err_handle' ERR if [[ -z "$1" ]]; then -echo "usage: install-binaries.sh <dev entry for system partitio>" -exit -1 + echo "usage: install-binaries.sh <dev entry for system partition>" + exit -1 fi mkdir -p /tmp/binaries cd /tmp/binaries/ -wget --no-check-certificate https://dl.google.com/dl/android/aosp/imgtec-panda-iml74k-cfb7bdad.tgz +wget --no-check-certificate $DL_URL tar -zxvf imgtec-panda-iml74k-cfb7bdad.tgz sh extract-imgtec-panda.sh sudo mount $1 /mnt/ @@ -33,3 +42,4 @@ sudo chmod -R 755 /mnt/vendor/lib/ sudo umount -f $1 cd - sudo rm -r /tmp/binaries +echo "Sucess, installing binary files"

12 years

[PATCH 00/17][V2] ARM: OMAP3/4 : cpuidle34xx and cpuidle44xx cleanups

by Daniel Lezcano

This patchset makes some cleanup on these cpuidle drivers and consolidate the code across both architecture. Tested on OMAP3 (igepV2). Partially tested on OMAP4 (pandaboard), without offlining the cpu1. V2 : Fixed a couple of typos in the patch description V1 : Initial Post Daniel Lezcano (17): ARM: OMAP4: cpuidle - Remove unused valid field ARM: OMAP4: cpuidle - Declare the states with the driver declaration ARM: OMAP4: cpuidle - Remove the cpuidle_params_table table ARM: OMAP4: cpuidle - fix static omap4_idle_data declaration ARM: OMAP4: cpuidle - Initialize omap4_idle_data at compile time ARM: OMAP4: cpuidle - use the omap4_idle_data variable directly ARM: OMAP4: cpuidle - remove omap4_idle_data initialization at boot time ARM: OMAP3: cpuidle - remove rx51 cpuidle parameters table ARM: OMAP3: define cpuidle statically ARM: OMAP3: cpuidle - remove the 'valid' field ARM: OMAP3: cpuidle - remove cpuidle_params_table ARM: OMAP3: define statically the omap3_idle_data ARM: OMAP3: cpuidle - use omap3_idle_data directly ARM: OMAP3 : cpuidle - simplify next_valid_state ARM: OMAP3: set omap3_idle_data as static ARM: OMAP3/4: consolidate cpuidle Makefile ARM: OMAP3: cpuidle - set global variables static arch/arm/mach-omap2/Makefile | 11 +- arch/arm/mach-omap2/board-rx51.c | 38 +++--- arch/arm/mach-omap2/cpuidle34xx.c | 299 +++++++++++++++---------------------- arch/arm/mach-omap2/cpuidle44xx.c | 135 +++++++---------- arch/arm/mach-omap2/pm.h | 38 ++--- 5 files changed, 219 insertions(+), 302 deletions(-) -- 1.7.5.4

12 years

Speaker request

by Laura Czajkowski

Hi I've involved in organising a conference to take place on October 6th & 7th this year in Limerick Ireland. It's a technical conference speaking to students, lecturers and businesses involved in open source. The event is SkyCon which is the Skynet computer society 20th birthday. It's a 2 day conference and previous ones have been a success skycon.skynet.ie if you're interested in speaking can you send me a mail off list please and we can discuss it further. You would need to be at the event for both days, and we would cover flights and accommodation for the event for you, ideally if you're in the EU it would also be easier. Thanks Laura

12 years

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linaro-dev April 2012