Possible regression due to "tick: broadcast: Prevent livelock from event handler"

Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Simon Horman]

Hi Thomas,

I have observed what appears to be a regression while testing next-20150702
which seems to be caused by 2951d5c031a3 ("tick: broadcast: Prevent
livelock from event handler").

The problem manifests on the emev2/kzm9d board as per the boot log below.

The problem manifests when booting using the shmobile_defconfig,
which uses multiplatform and enables all devices using DT.

The problem does not appear to always manifest but anecdotally it
seems to manifest more often of late (yes, I know that is vague).

This problem was reported to me by Geert Uytterhoeven.
Kevin Hillman has also reported problems reliably booting the emev2/kzm9d board.


Please note that in order to boot 2951d5c031a3 on the emev2/kzm9d board
using the shmobile_defconfig the following is required:
6b442bc81337 ("nohz: Fix !HIGH_RES_TIMERS hang").


Booting Linux on physical CPU 0x0
Linux version 4.1.0-next-20150702 (horms@ayumi.isobedori.kobe.vergenet.net) (gcc version 4.6.3 (GCC) ) #4556 SMP Fri Jul 3 11:31:38 JST 2015
CPU: ARMv7 Processor [411fc093] revision 3 (ARMv7), cr=10c5307d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine model: EMEV2 KZM9D Board
debug: ignoring loglevel setting.
Memory policy: Data cache writealloc
On node 0 totalpages: 32768
free_area_init_node: node 0, pgdat c0817500, node_mem_map c7ef9000
  Normal zone: 256 pages used for memmap
  Normal zone: 0 pages reserved
  Normal zone: 32768 pages, LIFO batch:7
PERCPU: Embedded 9 pages/cpu @c7ee0000 s13824 r0 d23040 u36864
pcpu-alloc: s13824 r0 d23040 u36864 alloc=9*4096
pcpu-alloc: [0] 0 [0] 1 
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
Kernel command line: console=ttyS1,115200n81 ignore_loglevel root=/dev/nfs ip=dhcp
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 121328K/131072K available (4888K kernel code, 283K rwdata, 1352K rodata, 1728K init, 204K bss, 9744K reserved, 0K cma-reserved, 0K highmem)
Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
    vmalloc : 0xc8800000 - 0xff000000   ( 872 MB)
    lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
    pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
      .text : 0xc0008000 - 0xc0621044   (6245 kB)
      .init : 0xc0622000 - 0xc07d2000   (1728 kB)
      .data : 0xc07d2000 - 0xc0818e40   ( 284 kB)
       .bss : 0xc081b000 - 0xc084e24c   ( 205 kB)
Hierarchical RCU implementation.
        Additional per-CPU info printed with stalls.
        Build-time adjustment of leaf fanout to 32.
        RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
RCU: Adjusting geometry for rcu_fanout_leaf=32, nr_cpu_ids=2
NR_IRQS:16 nr_irqs:16 16
clocksource_of_init: no matching clocksources found
sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 21474836475000000ns
Console: colour dummy device 80x30
Calibrating delay loop (skipped) preset value.. 355.33 BogoMIPS (lpj=1776666)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
CPU: Testing write buffer coherency: ok
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
Setting up static identity map for 0x40009000 - 0x40009058
CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
Brought up 2 CPUs
SMP: Total of 2 processors activated (710.66 BogoMIPS).
CPU: All CPU(s) started in SVC mode.
devtmpfs: initialized
VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 1
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
pinctrl core: initialized pinctrl subsystem
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
sh-pfc e0140200.pfc: emev2_pfc support registered
No ATAGs?
hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
hw-breakpoint: maximum watchpoint size is 4 bytes.
vgaarb: loaded
SCSI subsystem initialized
libata version 3.00 loaded.
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
media: Linux media interface: v0.10
Linux video capture interface: v2.00
em_sti e0180000.timer: used for clock events
em_sti e0180000.timer: used for oneshot clock events
em_sti e0180000.timer: used as clock source
clocksource: e0180000.timer: mask: 0xffffffffffff max_cycles: 0x1ef4687b1, max_idle_ns: 3697658158765000000 ns
Advanced Linux Sound Architecture Driver Initialized.
clocksource: e0180000.timer: mask: 0xffffffffffff max_cycles: 0x1ef4687b1, max_idle_ns: 112843571739654 ns
clocksource: Switched to clocksource e0180000.timer
NET: Registered protocol family 2
TCP established hash table entries: 1024 (order: 0, 4096 bytes)
TCP bind hash table entries: 1024 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
UDP hash table entries: 256 (order: 1, 8192 bytes)
UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
PCI: CLS 0 bytes, default 64
Clockevents: could not switch to one-shot mode: dummy_timer is not functional.
Clockevents: could not switch to one-shot mode: dummy_timer is not functional.
hw perfevents: Failed to parse /pmu/interrupt-affinity[0]
hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters available
futex hash table entries: 512 (order: 3, 32768 bytes)
NFS: Registering the id_resolver key type
Key type id_resolver registered
Key type id_legacy registered
nfs4filelayout_init: NFSv4 File Layout Driver Registering...
nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
jitterentropy: Initialization failed with host not compliant with requirements: 2
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
e1020000.serial: ttyS0 at MMIO 0xe1020000 (irq = 19, base_baud = 796444) is a 16550A
console [ttyS1] disabled
e1030000.serial: ttyS1 at MMIO 0xe1030000 (irq = 20, base_baud = 7168000) is a 16550A
console [ttyS1] enabled
e1040000.serial: ttyS2 at MMIO 0xe1040000 (irq = 21, base_baud = 14336000) is a 16550A
e1050000.serial: ttyS3 at MMIO 0xe1050000 (irq = 22, base_baud = 2389333) is a 16550A
SuperH (H)SCI(F) driver initialized
[drm] Initialized drm 1.1.0 20060810
libphy: smsc911x-mdio: probed
smsc911x 20000000.ethernet eth0: attached PHY driver [SMSC LAN8700] (mii_bus:phy_addr=20000000.etherne:01, irq=-1)
smsc911x 20000000.ethernet eth0: MAC Address: 00:01:9b:04:03:cf
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-pci: EHCI PCI platform driver
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
ohci-pci: OHCI PCI platform driver
mousedev: PS/2 mouse device common for all mice
i2c /dev entries driver
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
NET: Registered protocol family 10
sit: IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
Key type dns_resolver registered
cpu cpu0: failed to get cpu0 clock: -2
cpufreq-dt: probe of cpufreq-dt failed with error -2
Registering SWP/SWPB emulation handler
input: gpio_keys as /devices/platform/gpio_keys/input/input0
hctosys: unable to open rtc device (rtc0)

The boot hangs here.
The next line should be:

smsc911x 20000000.ethernet eth0: SMSC911x/921x identified at 0xc8880000, IRQ: 33

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Geert Uytterhoeven]

Hi Simon,

On Fri, Jul 3, 2015 at 4:40 AM, Simon Horman <horms@verge.net.au> wrote:
> I have observed what appears to be a regression while testing next-20150702
> which seems to be caused by 2951d5c031a3 ("tick: broadcast: Prevent
> livelock from event handler").
>
> The problem manifests on the emev2/kzm9d board as per the boot log below.
>
> The problem manifests when booting using the shmobile_defconfig,
> which uses multiplatform and enables all devices using DT.
>
> The problem does not appear to always manifest but anecdotally it
> seems to manifest more often of late (yes, I know that is vague).

> hctosys: unable to open rtc device (rtc0)
>
> The boot hangs here.
> The next line should be:
>
> smsc911x 20000000.ethernet eth0: SMSC911x/921x identified at 0xc8880000, IRQ: 33

As you can reproduce it, can you please try enabling lockdep debugging?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Thomas Gleixner]

On Fri, 3 Jul 2015, Geert Uytterhoeven wrote:
> Hi Simon,
> 
> On Fri, Jul 3, 2015 at 4:40 AM, Simon Horman <horms@verge.net.au> wrote:
> > I have observed what appears to be a regression while testing next-20150702
> > which seems to be caused by 2951d5c031a3 ("tick: broadcast: Prevent
> > livelock from event handler").
> >
> > The problem manifests on the emev2/kzm9d board as per the boot log below.
> >
> > The problem manifests when booting using the shmobile_defconfig,
> > which uses multiplatform and enables all devices using DT.
> >
> > The problem does not appear to always manifest but anecdotally it
> > seems to manifest more often of late (yes, I know that is vague).
> 
> > hctosys: unable to open rtc device (rtc0)
> >
> > The boot hangs here.
> > The next line should be:
> >
> > smsc911x 20000000.ethernet eth0: SMSC911x/921x identified at 0xc8880000, IRQ: 33
> 
> As you can reproduce it, can you please try enabling lockdep debugging?

Just looking at the em_sti driver. It calls clk_prepare/unprepare from
interrupt disabled regions ...

But that's not the problem at hand I think. The above commit is moving
the call to the event handler on the local cpu out of the broadcast
lock region to prevent a live lock. The only real change is the
timing.

Before:

	bc_handler()
	  lock(bc_lock);
	  call_local_handler();
	  send_ipis();
	  reprogramm_bc_device();
	  unlock(bc_lock);

After:

	bc_handler()
	  lock(bc_lock);
	  send_ipis();
	  reprogramm_bc_device();
	  unlock(bc_lock);
	  call_local_handler();

As this runs in hard interrupt context with interrupts disabled, I
really cannot figure out how that makes a difference.

Can you add some debugging to figure out whether the broadcast timer
interrupt still fires?

Thanks,

	tglx

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Wolfram Sang]

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Hi Simon,

> I have observed what appears to be a regression while testing next-20150702
> which seems to be caused by 2951d5c031a3 ("tick: broadcast: Prevent
> livelock from event handler").

Does reverting help? I see a similar case with your branch
renesas-devel-20150629-v4.1 which does not include both commits.

For this branch, if I select CONFIG_NO_HZ_IDLE and *no* CONFIG_HIGH_RES_TIMERS,
I see the case you described:

> input: gpio_keys as /devices/platform/gpio_keys/input/input0
> hctosys: unable to open rtc device (rtc0)
> 
> The boot hangs here.
> The next line should be:
> 
> smsc911x 20000000.ethernet eth0: SMSC911x/921x identified at 0xc8880000, IRQ: 33

There is no OOPS, it just stops here. With CONFIG_HIGH_RES_TIMERS, the
system boots to the prompt.

Enabling all lockdep features doesn't show anything for the non-working
case. However, I get warning for the working case:

[    2.560000] input: gpio_keys as /devices/platform/gpio_keys/input/input0
[    2.610000] smsc911x 20000000.ethernet eth0: SMSC911x/921x identified at 0xc8880000, IRQ: 33
[    5.510000] Sending DHCP requests ., OK
[    5.580000] IP-Config: Got DHCP answer from 192.168.64.1, my address is 192.168.64.14
[    5.580000] IP-Config: Complete:
[    5.590000]      device=eth0, hwaddr=00:01:9b:04:03:ce, ipaddr=192.168.64.14, mask=255.255.255.0, gw=192.168.64.1
[    5.600000]      host=192.168.64.14, domain=local, nis-domain=(none)
[    5.600000]      bootserver=192.168.64.1, rootserver=192.168.64.1, rootpath=
[    5.610000]      nameserver0=192.168.64.1
[    5.630000] Freeing unused kernel memory: 632K (c0306000 - c03a4000)
[    5.660000] random: init urandom read with 14 bits of entropy available
[    5.820000] ------------[ cut here ]------------
[    5.820000] WARNING: CPU: 0 PID: 282 at kernel/locking/lockdep.c:3557 check_flags+0x84/0x1f4()
[    5.820000] DEBUG_LOCKS_WARN_ON(current->hardirqs_enabled)
[    5.820000] CPU: 0 PID: 282 Comm: rcS Tainted: G        W       4.1.0-00002-g5b076054611833 #179
[    5.820000] Hardware name: Generic Emma Mobile EV2 (Flattened Device Tree)
[    5.820000] Backtrace: 
[    5.820000] [<c0012c94>] (dump_backtrace) from [<c0012e3c>] (show_stack+0x18/0x1c)
[    5.820000]  r6:c02dcc67 r5:00000009 r4:00000000 r3:00400000
[    5.820000] [<c0012e24>] (show_stack) from [<c02510c8>] (dump_stack+0x20/0x28)
[    5.820000] [<c02510a8>] (dump_stack) from [<c0022c44>] (warn_slowpath_common+0x8c/0xb4)
[    5.820000] [<c0022bb8>] (warn_slowpath_common) from [<c0022cd8>] (warn_slowpath_fmt+0x38/0x40)
[    5.820000]  r8:c780f470 r7:00000000 r6:00000000 r5:c03b0570 r4:c0b7ec04
[    5.820000] [<c0022ca4>] (warn_slowpath_fmt) from [<c004cd38>] (check_flags+0x84/0x1f4)
[    5.820000]  r3:c02e13d8 r2:c02dceaa
[    5.820000] [<c004ccb4>] (check_flags) from [<c0050e50>] (lock_acquire+0x4c/0xbc)
[    5.820000]  r5:00000000 r4:60000193
[    5.820000] [<c0050e04>] (lock_acquire) from [<c0256000>] (_raw_spin_lock+0x34/0x44)
[    5.820000]  r9:000a8d5c r8:00000001 r7:c7806000 r6:c780f460 r5:c03b06a0 r4:c780f460
[    5.820000] [<c0255fcc>] (_raw_spin_lock) from [<c005a8cc>] (handle_fasteoi_irq+0x20/0x11c)
[    5.820000]  r4:c780f400
[    5.820000] [<c005a8ac>] (handle_fasteoi_irq) from [<c0057a4c>] (generic_handle_irq+0x28/0x38)
[    5.820000]  r6:00000000 r5:c03b038c r4:00000012 r3:c005a8ac
[    5.820000] [<c0057a24>] (generic_handle_irq) from [<c0057ae4>] (__handle_domain_irq+0x88/0xa8)
[    5.820000]  r4:00000000 r3:00000026
[    5.820000] [<c0057a5c>] (__handle_domain_irq) from [<c000a3cc>] (gic_handle_irq+0x40/0x58)
[    5.820000]  r8:10c5347d r7:10c5347d r6:c35b1fb0 r5:c03a6304 r4:c8802000 r3:c35b1fb0
[    5.820000] [<c000a38c>] (gic_handle_irq) from [<c0013bc8>] (__irq_usr+0x48/0x60)
[    5.820000] Exception stack(0xc35b1fb0 to 0xc35b1ff8)
[    5.820000] 1fa0:                                     00000061 00000000 000ab736 00000066
[    5.820000] 1fc0: 00000061 000aa1f0 000a8d54 000a8d54 000a8d88 000a8d5c 000a8cc8 000a8d68
[    5.820000] 1fe0: 72727272 bef8a528 000398c0 00031334 20000010 ffffffff
[    5.820000]  r6:ffffffff r5:20000010 r4:00031334 r3:00000061
[    5.820000] ---[ end trace cb88537fdc8fa202 ]---
[    5.820000] possible reason: unannotated irqs-off.
[    5.820000] irq event stamp: 769
[    5.820000] hardirqs last  enabled at (769): [<c000f82c>] ret_fast_syscall+0x2c/0x54
[    5.820000] hardirqs last disabled at (768): [<c000f80c>] ret_fast_syscall+0xc/0x54
[    5.820000] softirqs last  enabled at (0): [<c0020ec4>] copy_process.part.65+0x2e8/0x11dc
[    5.820000] softirqs last disabled at (0): [<  (null)>]   (null)

I haven't further researched, but wanted to share this already.

All the best,

   Wolfram#


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Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Russell King - ARM Linux]

On Fri, Jul 03, 2015 at 12:54:41PM +0200, Wolfram Sang wrote:
> Enabling all lockdep features doesn't show anything for the non-working
> case. However, I get warning for the working case:

Please share your .config file for this case.  Thanks.

-- 
FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up
according to speedtest.net.

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Wolfram Sang]

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> Please share your .config file for this case.  Thanks.

Here it goes...

#
# Automatically generated file; DO NOT EDIT.
# Linux/arm 4.1.0 Kernel Configuration
#
CONFIG_ARM=y
CONFIG_ARM_HAS_SG_CHAIN=y
CONFIG_MIGHT_HAVE_PCI=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_HAVE_PROC_CPU=y
CONFIG_NO_IOPORT_MAP=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_VECTORS_BASE=0xffff0000
CONFIG_ARM_PATCH_PHYS_VIRT=y
CONFIG_GENERIC_BUG=y
CONFIG_PGTABLE_LEVELS=2
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_EXTABLE_SORT=y

#
# General setup
#
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
# CONFIG_COMPILE_TEST is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
# CONFIG_KERNEL_GZIP is not set
# CONFIG_KERNEL_LZMA is not set
CONFIG_KERNEL_XZ=y
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
# CONFIG_POSIX_MQUEUE is not set
CONFIG_CROSS_MEMORY_ATTACH=y
# CONFIG_FHANDLE is not set
CONFIG_USELIB=y
# CONFIG_AUDIT is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_HANDLE_DOMAIN_IRQ=y
# CONFIG_IRQ_DOMAIN_DEBUG is not set
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y

#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
CONFIG_NO_HZ_IDLE=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y

#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_TASKSTATS is not set

#
# RCU Subsystem
#
CONFIG_TINY_RCU=y
CONFIG_SRCU=y
# CONFIG_TASKS_RCU is not set
# CONFIG_RCU_STALL_COMMON is not set
# CONFIG_TREE_RCU_TRACE is not set
CONFIG_RCU_KTHREAD_PRIO=0
# CONFIG_RCU_EXPEDITE_BOOT is not set
CONFIG_BUILD_BIN2C=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=16
CONFIG_GENERIC_SCHED_CLOCK=y
# CONFIG_CGROUPS is not set
# CONFIG_CHECKPOINT_RESTORE is not set
# CONFIG_NAMESPACES is not set
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_SYSFS_DEPRECATED is not set
# CONFIG_RELAY is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE="rootfs.cpio.xz"
CONFIG_INITRAMFS_ROOT_UID=0
CONFIG_INITRAMFS_ROOT_GID=0
# CONFIG_RD_GZIP is not set
# CONFIG_RD_BZIP2 is not set
# CONFIG_RD_LZMA is not set
CONFIG_RD_XZ=y
# CONFIG_RD_LZO is not set
# CONFIG_RD_LZ4 is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
CONFIG_HAVE_UID16=y
CONFIG_BPF=y
CONFIG_EXPERT=y
CONFIG_UID16=y
CONFIG_MULTIUSER=y
# CONFIG_SGETMASK_SYSCALL is not set
CONFIG_SYSFS_SYSCALL=y
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
# CONFIG_BPF_SYSCALL is not set
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_EMBEDDED=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_COMPAT_BRK=y
CONFIG_SLAB=y
# CONFIG_SLUB is not set
# CONFIG_SLOB is not set
# CONFIG_PROFILING is not set
CONFIG_HAVE_OPROFILE=y
# CONFIG_JUMP_LABEL is not set
# CONFIG_UPROBES is not set
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_ATTRS=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_GENERIC_IDLE_POLL_SETUP=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR is not set
CONFIG_CC_STACKPROTECTOR_NONE=y
# CONFIG_CC_STACKPROTECTOR_REGULAR is not set
# CONFIG_CC_STACKPROTECTOR_STRONG is not set
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_OLD_SIGACTION=y

#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
# CONFIG_MODULES is not set
# CONFIG_BLOCK is not set
CONFIG_UNINLINE_SPIN_UNLOCK=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
# CONFIG_FREEZER is not set

#
# System Type
#
CONFIG_MMU=y
CONFIG_ARCH_MULTIPLATFORM=y
# CONFIG_ARCH_REALVIEW is not set
# CONFIG_ARCH_VERSATILE is not set
# CONFIG_ARCH_CLPS711X is not set
# CONFIG_ARCH_GEMINI is not set
# CONFIG_ARCH_EBSA110 is not set
# CONFIG_ARCH_EP93XX is not set
# CONFIG_ARCH_FOOTBRIDGE is not set
# CONFIG_ARCH_NETX is not set
# CONFIG_ARCH_IOP13XX is not set
# CONFIG_ARCH_IOP32X is not set
# CONFIG_ARCH_IOP33X is not set
# CONFIG_ARCH_IXP4XX is not set
# CONFIG_ARCH_DOVE is not set
# CONFIG_ARCH_MV78XX0 is not set
# CONFIG_ARCH_ORION5X is not set
# CONFIG_ARCH_MMP is not set
# CONFIG_ARCH_KS8695 is not set
# CONFIG_ARCH_W90X900 is not set
# CONFIG_ARCH_LPC32XX is not set
# CONFIG_ARCH_PXA is not set
# CONFIG_ARCH_SHMOBILE_LEGACY is not set
# CONFIG_ARCH_RPC is not set
# CONFIG_ARCH_SA1100 is not set
# CONFIG_ARCH_S3C24XX is not set
# CONFIG_ARCH_S3C64XX is not set
# CONFIG_ARCH_DAVINCI is not set
# CONFIG_ARCH_OMAP1 is not set

#
# Multiple platform selection
#

#
# CPU Core family selection
#
# CONFIG_ARCH_MULTI_V6 is not set
CONFIG_ARCH_MULTI_V7=y
CONFIG_ARCH_MULTI_V6_V7=y
# CONFIG_ARCH_MULTI_CPU_AUTO is not set
# CONFIG_ARCH_VIRT is not set
# CONFIG_ARCH_MVEBU is not set
# CONFIG_ARCH_ALPINE is not set
# CONFIG_ARCH_AT91 is not set
# CONFIG_ARCH_BCM is not set
# CONFIG_ARCH_BERLIN is not set
# CONFIG_ARCH_DIGICOLOR is not set
# CONFIG_ARCH_HIGHBANK is not set
# CONFIG_ARCH_HISI is not set
# CONFIG_ARCH_KEYSTONE is not set
# CONFIG_ARCH_MESON is not set
# CONFIG_ARCH_MXC is not set
# CONFIG_ARCH_MEDIATEK is not set

#
# TI OMAP/AM/DM/DRA Family
#
# CONFIG_ARCH_OMAP3 is not set
# CONFIG_ARCH_OMAP4 is not set
# CONFIG_SOC_OMAP5 is not set
# CONFIG_SOC_AM33XX is not set
# CONFIG_SOC_AM43XX is not set
# CONFIG_SOC_DRA7XX is not set
# CONFIG_ARCH_QCOM is not set
# CONFIG_ARCH_ROCKCHIP is not set
# CONFIG_ARCH_SOCFPGA is not set
# CONFIG_PLAT_SPEAR is not set
# CONFIG_ARCH_STI is not set
# CONFIG_ARCH_S5PV210 is not set
# CONFIG_ARCH_EXYNOS is not set
CONFIG_ARCH_SHMOBILE=y
CONFIG_ARCH_RCAR_GEN2=y
CONFIG_ARCH_SHMOBILE_MULTI=y
CONFIG_ARCH_EMEV2=y
# CONFIG_ARCH_R7S72100 is not set
# CONFIG_ARCH_R8A73A4 is not set
# CONFIG_ARCH_R8A7740 is not set
# CONFIG_ARCH_R8A7778 is not set
# CONFIG_ARCH_R8A7779 is not set
CONFIG_ARCH_R8A7790=y
CONFIG_ARCH_R8A7791=y
# CONFIG_ARCH_R8A7793 is not set
# CONFIG_ARCH_R8A7794 is not set
# CONFIG_ARCH_SH73A0 is not set

#
# Renesas ARM SoCs Board Type
#

#
# Renesas ARM SoCs System Configuration
#

#
# Timer and clock configuration
#
CONFIG_SHMOBILE_TIMER_HZ=128
# CONFIG_ARCH_SUNXI is not set
# CONFIG_ARCH_SIRF is not set
# CONFIG_ARCH_TEGRA is not set
# CONFIG_ARCH_U8500 is not set
# CONFIG_ARCH_VEXPRESS is not set
# CONFIG_ARCH_WM8850 is not set
# CONFIG_ARCH_ZYNQ is not set

#
# Processor Type
#
CONFIG_CPU_V7=y
CONFIG_CPU_32v6K=y
CONFIG_CPU_32v7=y
CONFIG_CPU_ABRT_EV7=y
CONFIG_CPU_PABRT_V7=y
CONFIG_CPU_CACHE_V7=y
CONFIG_CPU_CACHE_VIPT=y
CONFIG_CPU_COPY_V6=y
CONFIG_CPU_TLB_V7=y
CONFIG_CPU_HAS_ASID=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y

#
# Processor Features
#
# CONFIG_ARM_LPAE is not set
# CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set
CONFIG_ARM_THUMB=y
# CONFIG_ARM_THUMBEE is not set
CONFIG_ARM_VIRT_EXT=y
# CONFIG_SWP_EMULATE is not set
# CONFIG_CPU_ICACHE_DISABLE is not set
# CONFIG_CPU_DCACHE_DISABLE is not set
CONFIG_CPU_BPREDICT_DISABLE=y
CONFIG_KUSER_HELPERS=y
CONFIG_VDSO=y
CONFIG_OUTER_CACHE=y
CONFIG_OUTER_CACHE_SYNC=y
CONFIG_MIGHT_HAVE_CACHE_L2X0=y
CONFIG_CACHE_L2X0=y
CONFIG_PL310_ERRATA_588369=y
# CONFIG_PL310_ERRATA_727915 is not set
# CONFIG_PL310_ERRATA_753970 is not set
# CONFIG_PL310_ERRATA_769419 is not set
CONFIG_ARM_L1_CACHE_SHIFT_6=y
CONFIG_ARM_L1_CACHE_SHIFT=6
CONFIG_ARM_DMA_MEM_BUFFERABLE=y
# CONFIG_ARM_KERNMEM_PERMS is not set
CONFIG_MULTI_IRQ_HANDLER=y
# CONFIG_ARM_ERRATA_430973 is not set
# CONFIG_ARM_ERRATA_720789 is not set
CONFIG_ARM_ERRATA_754322=y
# CONFIG_ARM_ERRATA_775420 is not set
# CONFIG_ARM_ERRATA_773022 is not set

#
# Bus support
#
# CONFIG_PCI is not set
# CONFIG_PCI_DOMAINS_GENERIC is not set
# CONFIG_PCI_SYSCALL is not set
# CONFIG_PCCARD is not set

#
# Kernel Features
#
CONFIG_HAVE_SMP=y
# CONFIG_SMP is not set
CONFIG_HAVE_ARM_ARCH_TIMER=y
CONFIG_VMSPLIT_3G=y
# CONFIG_VMSPLIT_2G is not set
# CONFIG_VMSPLIT_1G is not set
CONFIG_PAGE_OFFSET=0xC0000000
# CONFIG_ARM_PSCI is not set
CONFIG_ARCH_NR_GPIO=1024
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
CONFIG_HZ_FIXED=0
CONFIG_HZ_100=y
# CONFIG_HZ_200 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_500 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
CONFIG_SCHED_HRTICK=y
# CONFIG_THUMB2_KERNEL is not set
CONFIG_AEABI=y
# CONFIG_OABI_COMPAT is not set
# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
CONFIG_HAVE_ARCH_PFN_VALID=y
CONFIG_HIGHMEM=y
# CONFIG_HIGHPTE is not set
CONFIG_HW_PERF_EVENTS=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_NO_BOOTMEM=y
# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_COMPACTION=y
CONFIG_MIGRATION=y
# CONFIG_PHYS_ADDR_T_64BIT is not set
CONFIG_ZONE_DMA_FLAG=0
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_NEED_PER_CPU_KM=y
# CONFIG_CLEANCACHE is not set
# CONFIG_CMA is not set
# CONFIG_ZPOOL is not set
# CONFIG_ZBUD is not set
# CONFIG_ZSMALLOC is not set
CONFIG_FORCE_MAX_ZONEORDER=11
CONFIG_ALIGNMENT_TRAP=y
# CONFIG_UACCESS_WITH_MEMCPY is not set
# CONFIG_SECCOMP is not set
CONFIG_SWIOTLB=y
CONFIG_IOMMU_HELPER=y
# CONFIG_XEN is not set

#
# Boot options
#
CONFIG_USE_OF=y
CONFIG_ATAGS=y
# CONFIG_DEPRECATED_PARAM_STRUCT is not set
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ARM_APPENDED_DTB=y
# CONFIG_ARM_ATAG_DTB_COMPAT is not set
CONFIG_CMDLINE=""
# CONFIG_KEXEC is not set
# CONFIG_CRASH_DUMP is not set
CONFIG_AUTO_ZRELADDR=y

#
# CPU Power Management
#

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set

#
# CPU Idle
#
# CONFIG_CPU_IDLE is not set
# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set

#
# Floating point emulation
#

#
# At least one emulation must be selected
#
CONFIG_VFP=y
CONFIG_VFPv3=y
CONFIG_NEON=y
# CONFIG_KERNEL_MODE_NEON is not set

#
# Userspace binary formats
#
CONFIG_BINFMT_ELF=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_BINFMT_SCRIPT=y
# CONFIG_HAVE_AOUT is not set
# CONFIG_BINFMT_MISC is not set
CONFIG_COREDUMP=y

#
# Power management options
#
# CONFIG_SUSPEND is not set
# CONFIG_PM is not set
CONFIG_ARCH_SUSPEND_POSSIBLE=y
# CONFIG_ARM_CPU_SUSPEND is not set
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_NET=y

#
# Networking options
#
# CONFIG_PACKET is not set
# CONFIG_UNIX is not set
# CONFIG_XFRM_USER is not set
# CONFIG_NET_KEY is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
# CONFIG_IP_PNP_BOOTP is not set
# CONFIG_IP_PNP_RARP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE_DEMUX is not set
# CONFIG_NET_IP_TUNNEL is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_NET_UDP_TUNNEL is not set
# CONFIG_NET_FOU is not set
# CONFIG_GENEVE is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_XFRM_TUNNEL is not set
# CONFIG_INET_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_LRO is not set
# CONFIG_INET_DIAG is not set
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NET_PTP_CLASSIFY is not set
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
# CONFIG_NETFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_L2TP is not set
# CONFIG_BRIDGE is not set
CONFIG_HAVE_NET_DSA=y
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
# CONFIG_NETLINK_MMAP is not set
# CONFIG_NETLINK_DIAG is not set
# CONFIG_MPLS is not set
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_WIRELESS is not set
# CONFIG_WIMAX is not set
# CONFIG_RFKILL is not set
# CONFIG_RFKILL_REGULATOR is not set
# CONFIG_NET_9P is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
CONFIG_HAVE_BPF_JIT=y

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER=y
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
CONFIG_FIRMWARE_IN_KERNEL=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER_FALLBACK is not set
CONFIG_ALLOW_DEV_COREDUMP=y
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_SYS_HYPERVISOR is not set
# CONFIG_GENERIC_CPU_DEVICES is not set
CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=y
CONFIG_REGMAP_IRQ=y
# CONFIG_DMA_SHARED_BUFFER is not set

#
# Bus devices
#
CONFIG_ARM_CCI=y
CONFIG_ARM_CCI400_COMMON=y
CONFIG_ARM_CCI400_PMU=y
# CONFIG_ARM_CCN is not set
# CONFIG_BRCMSTB_GISB_ARB is not set
# CONFIG_VEXPRESS_CONFIG is not set
# CONFIG_CONNECTOR is not set
# CONFIG_MTD is not set
CONFIG_DTC=y
CONFIG_OF=y

#
# Device Tree and Open Firmware support
#
# CONFIG_OF_UNITTEST is not set
CONFIG_OF_FLATTREE=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_IRQ=y
CONFIG_OF_NET=y
CONFIG_OF_MDIO=y
CONFIG_OF_RESERVED_MEM=y
# CONFIG_OF_OVERLAY is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
# CONFIG_PARPORT is not set

#
# Misc devices
#
# CONFIG_SENSORS_LIS3LV02D is not set
# CONFIG_AD525X_DPOT is not set
# CONFIG_DUMMY_IRQ is not set
# CONFIG_ICS932S401 is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_APDS9802ALS is not set
# CONFIG_ISL29003 is not set
# CONFIG_ISL29020 is not set
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_SENSORS_BH1780 is not set
# CONFIG_SENSORS_BH1770 is not set
# CONFIG_SENSORS_APDS990X is not set
# CONFIG_HMC6352 is not set
# CONFIG_DS1682 is not set
# CONFIG_BMP085_I2C is not set
# CONFIG_USB_SWITCH_FSA9480 is not set
# CONFIG_SRAM is not set
# CONFIG_C2PORT is not set

#
# EEPROM support
#
CONFIG_EEPROM_AT24=y
# CONFIG_EEPROM_LEGACY is not set
# CONFIG_EEPROM_MAX6875 is not set
# CONFIG_EEPROM_93CX6 is not set

#
# Texas Instruments shared transport line discipline
#
# CONFIG_TI_ST is not set
# CONFIG_SENSORS_LIS3_I2C is not set

#
# Altera FPGA firmware download module
#
# CONFIG_ALTERA_STAPL is not set

#
# Intel MIC Bus Driver
#

#
# Intel MIC Host Driver
#

#
# Intel MIC Card Driver
#
# CONFIG_ECHO is not set
# CONFIG_CXL_BASE is not set

#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_SCSI_DMA is not set
# CONFIG_SCSI_NETLINK is not set
CONFIG_NETDEVICES=y
CONFIG_MII=y
CONFIG_NET_CORE=y
# CONFIG_BONDING is not set
# CONFIG_DUMMY is not set
# CONFIG_EQUALIZER is not set
# CONFIG_NET_TEAM is not set
# CONFIG_MACVLAN is not set
# CONFIG_VXLAN is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_NETPOLL is not set
# CONFIG_NET_POLL_CONTROLLER is not set
# CONFIG_TUN is not set
# CONFIG_VETH is not set
# CONFIG_NLMON is not set

#
# CAIF transport drivers
#

#
# Distributed Switch Architecture drivers
#
# CONFIG_NET_DSA_MV88E6XXX is not set
# CONFIG_NET_DSA_MV88E6XXX_NEED_PPU is not set
CONFIG_ETHERNET=y
# CONFIG_ALTERA_TSE is not set
# CONFIG_NET_VENDOR_ARC is not set
# CONFIG_NET_CADENCE is not set
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_CIRRUS is not set
# CONFIG_DM9000 is not set
# CONFIG_DNET is not set
# CONFIG_NET_VENDOR_FARADAY is not set
# CONFIG_NET_VENDOR_HISILICON is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_MARVELL is not set
# CONFIG_NET_VENDOR_MICREL is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_ETHOC is not set
# CONFIG_NET_VENDOR_QUALCOMM is not set
CONFIG_SH_ETH=y
# CONFIG_NET_VENDOR_ROCKER is not set
# CONFIG_NET_VENDOR_SAMSUNG is not set
# CONFIG_NET_VENDOR_SEEQ is not set
CONFIG_NET_VENDOR_SMSC=y
# CONFIG_SMC91X is not set
# CONFIG_SMC911X is not set
CONFIG_SMSC911X=y
# CONFIG_SMSC911X_ARCH_HOOKS is not set
# CONFIG_NET_VENDOR_STMICRO is not set
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WIZNET is not set
CONFIG_PHYLIB=y

#
# MII PHY device drivers
#
# CONFIG_AT803X_PHY is not set
# CONFIG_AMD_PHY is not set
# CONFIG_MARVELL_PHY is not set
# CONFIG_DAVICOM_PHY is not set
# CONFIG_QSEMI_PHY is not set
# CONFIG_LXT_PHY is not set
# CONFIG_CICADA_PHY is not set
# CONFIG_VITESSE_PHY is not set
CONFIG_SMSC_PHY=y
# CONFIG_BROADCOM_PHY is not set
# CONFIG_BCM7XXX_PHY is not set
# CONFIG_BCM87XX_PHY is not set
# CONFIG_ICPLUS_PHY is not set
# CONFIG_REALTEK_PHY is not set
# CONFIG_NATIONAL_PHY is not set
# CONFIG_STE10XP is not set
# CONFIG_LSI_ET1011C_PHY is not set
# CONFIG_MICREL_PHY is not set
# CONFIG_FIXED_PHY is not set
CONFIG_MDIO_BITBANG=y
# CONFIG_MDIO_GPIO is not set
# CONFIG_MDIO_BUS_MUX_GPIO is not set
# CONFIG_MDIO_BUS_MUX_MMIOREG is not set
# CONFIG_MDIO_BCM_UNIMAC is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set

#
# Host-side USB support is needed for USB Network Adapter support
#
# CONFIG_WLAN is not set

#
# Enable WiMAX (Networking options) to see the WiMAX drivers
#
# CONFIG_WAN is not set
# CONFIG_ISDN is not set

#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_POLLDEV is not set
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set

#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
# CONFIG_KEYBOARD_ADP5589 is not set
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_QT1070 is not set
# CONFIG_KEYBOARD_QT2160 is not set
# CONFIG_KEYBOARD_LKKBD is not set
CONFIG_KEYBOARD_GPIO=y
# CONFIG_KEYBOARD_GPIO_POLLED is not set
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_MATRIX is not set
# CONFIG_KEYBOARD_LM8333 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_MCS is not set
# CONFIG_KEYBOARD_MPR121 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_SAMSUNG is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_SH_KEYSC is not set
# CONFIG_KEYBOARD_OMAP4 is not set
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_KEYBOARD_CAP11XX is not set
# CONFIG_KEYBOARD_BCM is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_OF_TOUCHSCREEN=y
# CONFIG_TOUCHSCREEN_AD7879 is not set
# CONFIG_TOUCHSCREEN_AR1021_I2C is not set
# CONFIG_TOUCHSCREEN_ATMEL_MXT is not set
# CONFIG_TOUCHSCREEN_AUO_PIXCIR is not set
# CONFIG_TOUCHSCREEN_BU21013 is not set
# CONFIG_TOUCHSCREEN_CHIPONE_ICN8318 is not set
# CONFIG_TOUCHSCREEN_CY8CTMG110 is not set
# CONFIG_TOUCHSCREEN_CYTTSP_CORE is not set
# CONFIG_TOUCHSCREEN_CYTTSP4_CORE is not set
# CONFIG_TOUCHSCREEN_DYNAPRO is not set
# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
# CONFIG_TOUCHSCREEN_EETI is not set
# CONFIG_TOUCHSCREEN_EGALAX is not set
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_GOODIX is not set
# CONFIG_TOUCHSCREEN_ILI210X is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_ELAN is not set
# CONFIG_TOUCHSCREEN_ELO is not set
# CONFIG_TOUCHSCREEN_WACOM_W8001 is not set
# CONFIG_TOUCHSCREEN_WACOM_I2C is not set
# CONFIG_TOUCHSCREEN_MAX11801 is not set
# CONFIG_TOUCHSCREEN_MCS5000 is not set
# CONFIG_TOUCHSCREEN_MMS114 is not set
# CONFIG_TOUCHSCREEN_MTOUCH is not set
# CONFIG_TOUCHSCREEN_INEXIO is not set
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_EDT_FT5X06 is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_PIXCIR is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC_SERIO is not set
# CONFIG_TOUCHSCREEN_TSC2007 is not set
CONFIG_TOUCHSCREEN_ST1232=y
# CONFIG_TOUCHSCREEN_SX8654 is not set
# CONFIG_TOUCHSCREEN_TPS6507X is not set
# CONFIG_TOUCHSCREEN_ZFORCE is not set
# CONFIG_INPUT_MISC is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_SERPORT=y
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_SERIO_ALTERA_PS2 is not set
# CONFIG_SERIO_PS2MULT is not set
# CONFIG_SERIO_ARC_PS2 is not set
# CONFIG_SERIO_APBPS2 is not set
# CONFIG_GAMEPORT is not set

#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
CONFIG_UNIX98_PTYS=y
# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_N_GSM is not set
# CONFIG_TRACE_SINK is not set
CONFIG_DEVMEM=y
CONFIG_DEVKMEM=y

#
# Serial drivers
#
CONFIG_SERIAL_EARLYCON=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DMA=y
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
# CONFIG_SERIAL_8250_MANY_PORTS is not set
# CONFIG_SERIAL_8250_SHARE_IRQ is not set
# CONFIG_SERIAL_8250_DETECT_IRQ is not set
# CONFIG_SERIAL_8250_RSA is not set
# CONFIG_SERIAL_8250_DW is not set
CONFIG_SERIAL_8250_EM=y

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_EARLYCON_ARM_SEMIHOST is not set
CONFIG_SERIAL_SH_SCI=y
CONFIG_SERIAL_SH_SCI_NR_UARTS=20
CONFIG_SERIAL_SH_SCI_CONSOLE=y
# CONFIG_SERIAL_SH_SCI_DMA is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_OF_PLATFORM is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_SC16IS7XX is not set
# CONFIG_SERIAL_BCM63XX is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_XILINX_PS_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_CONEXANT_DIGICOLOR is not set
# CONFIG_SERIAL_ST_ASC is not set
# CONFIG_TTY_PRINTK is not set
# CONFIG_HVC_DCC is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_R3964 is not set
# CONFIG_TCG_TPM is not set
# CONFIG_XILLYBUS is not set

#
# I2C support
#
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_MUX=y

#
# Multiplexer I2C Chip support
#
# CONFIG_I2C_ARB_GPIO_CHALLENGE is not set
CONFIG_I2C_MUX_GPIO=y
# CONFIG_I2C_MUX_PCA9541 is not set
# CONFIG_I2C_MUX_PCA954x is not set
# CONFIG_I2C_MUX_PINCTRL is not set
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_ALGOBIT=y

#
# I2C Hardware Bus support
#

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_CBUS_GPIO is not set
# CONFIG_I2C_DESIGNWARE_PLATFORM is not set
CONFIG_I2C_EMEV2=y
CONFIG_I2C_GPIO=y
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_PXA_PCI is not set
CONFIG_I2C_RIIC=y
# CONFIG_I2C_RK3X is not set
CONFIG_I2C_SH_MOBILE=y
# CONFIG_I2C_SIMTEC is not set
# CONFIG_I2C_XILINX is not set
CONFIG_I2C_RCAR=y

#
# External I2C/SMBus adapter drivers
#
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_TAOS_EVM is not set

#
# Other I2C/SMBus bus drivers
#
CONFIG_I2C_SLAVE=y
CONFIG_I2C_SLAVE_EEPROM=y
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# CONFIG_SPI is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set

#
# PPS support
#
# CONFIG_PPS is not set

#
# PPS generators support
#

#
# PTP clock support
#
# CONFIG_PTP_1588_CLOCK is not set

#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
CONFIG_PINCTRL=y

#
# Pin controllers
#
CONFIG_PINMUX=y
CONFIG_PINCONF=y
CONFIG_GENERIC_PINCONF=y
# CONFIG_DEBUG_PINCTRL is not set
# CONFIG_PINCTRL_AMD is not set
# CONFIG_PINCTRL_SINGLE is not set
CONFIG_PINCTRL_SH_PFC=y
CONFIG_GPIO_SH_PFC=y
CONFIG_PINCTRL_PFC_EMEV2=y
CONFIG_PINCTRL_PFC_R8A7790=y
CONFIG_PINCTRL_PFC_R8A7791=y
CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
CONFIG_ARCH_REQUIRE_GPIOLIB=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_DEVRES=y
CONFIG_OF_GPIO=y
CONFIG_GPIOLIB_IRQCHIP=y
# CONFIG_DEBUG_GPIO is not set
# CONFIG_GPIO_SYSFS is not set

#
# Memory mapped GPIO drivers
#
# CONFIG_GPIO_74XX_MMIO is not set
# CONFIG_GPIO_ALTERA is not set
# CONFIG_GPIO_DWAPB is not set
CONFIG_GPIO_EM=y
# CONFIG_GPIO_GENERIC_PLATFORM is not set
# CONFIG_GPIO_GRGPIO is not set
CONFIG_GPIO_RCAR=y
# CONFIG_GPIO_SCH311X is not set
# CONFIG_GPIO_ZEVIO is not set

#
# I2C GPIO expanders
#
# CONFIG_GPIO_ADP5588 is not set
# CONFIG_GPIO_ADNP is not set
# CONFIG_GPIO_MAX7300 is not set
# CONFIG_GPIO_MAX732X is not set
# CONFIG_GPIO_PCA953X is not set
# CONFIG_GPIO_PCF857X is not set
# CONFIG_GPIO_SX150X is not set

#
# MFD GPIO expanders
#
# CONFIG_W1 is not set
# CONFIG_POWER_SUPPLY is not set
# CONFIG_POWER_AVS is not set
# CONFIG_HWMON is not set
CONFIG_THERMAL=y
CONFIG_THERMAL_OF=y
CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
# CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
# CONFIG_THERMAL_GOV_FAIR_SHARE is not set
CONFIG_THERMAL_GOV_STEP_WISE=y
# CONFIG_THERMAL_GOV_BANG_BANG is not set
# CONFIG_THERMAL_GOV_USER_SPACE is not set
# CONFIG_THERMAL_EMULATION is not set
CONFIG_RCAR_THERMAL=y

#
# Texas Instruments thermal drivers
#
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_CORE=y
# CONFIG_WATCHDOG_NOWAYOUT is not set

#
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
CONFIG_DA9063_WATCHDOG=y
# CONFIG_GPIO_WATCHDOG is not set
# CONFIG_XILINX_WATCHDOG is not set
# CONFIG_CADENCE_WATCHDOG is not set
# CONFIG_DW_WATCHDOG is not set
# CONFIG_MAX63XX_WATCHDOG is not set
# CONFIG_MEN_A21_WDT is not set
CONFIG_SSB_POSSIBLE=y

#
# Sonics Silicon Backplane
#
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y

#
# Broadcom specific AMBA
#
# CONFIG_BCMA is not set

#
# Multifunction device drivers
#
CONFIG_MFD_CORE=y
# CONFIG_MFD_AS3711 is not set
# CONFIG_MFD_AS3722 is not set
# CONFIG_PMIC_ADP5520 is not set
# CONFIG_MFD_AAT2870_CORE is not set
# CONFIG_MFD_ATMEL_HLCDC is not set
# CONFIG_MFD_BCM590XX is not set
# CONFIG_MFD_AXP20X is not set
# CONFIG_MFD_CROS_EC is not set
# CONFIG_MFD_ASIC3 is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_DA9052_I2C is not set
# CONFIG_MFD_DA9055 is not set
CONFIG_MFD_DA9063=y
# CONFIG_MFD_DA9150 is not set
# CONFIG_MFD_MC13XXX_I2C is not set
# CONFIG_MFD_HI6421_PMIC is not set
# CONFIG_HTC_EGPIO is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_HTC_I2CPLD is not set
# CONFIG_INTEL_SOC_PMIC is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_88PM800 is not set
# CONFIG_MFD_88PM805 is not set
# CONFIG_MFD_88PM860X is not set
# CONFIG_MFD_MAX14577 is not set
# CONFIG_MFD_MAX77686 is not set
# CONFIG_MFD_MAX77693 is not set
# CONFIG_MFD_MAX77843 is not set
# CONFIG_MFD_MAX8907 is not set
# CONFIG_MFD_MAX8925 is not set
# CONFIG_MFD_MAX8997 is not set
# CONFIG_MFD_MAX8998 is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_MENF21BMC is not set
# CONFIG_MFD_RETU is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_MFD_PM8921_CORE is not set
# CONFIG_MFD_RT5033 is not set
# CONFIG_MFD_RC5T583 is not set
# CONFIG_MFD_RK808 is not set
# CONFIG_MFD_RN5T618 is not set
# CONFIG_MFD_SEC_CORE is not set
# CONFIG_MFD_SI476X_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_SKY81452 is not set
# CONFIG_MFD_SMSC is not set
# CONFIG_ABX500_CORE is not set
# CONFIG_MFD_STMPE is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_LP3943 is not set
# CONFIG_MFD_LP8788 is not set
# CONFIG_MFD_PALMAS is not set
# CONFIG_TPS6105X is not set
# CONFIG_TPS65010 is not set
# CONFIG_TPS6507X is not set
# CONFIG_MFD_TPS65090 is not set
# CONFIG_MFD_TPS65217 is not set
# CONFIG_MFD_TPS65218 is not set
# CONFIG_MFD_TPS6586X is not set
# CONFIG_MFD_TPS65910 is not set
# CONFIG_MFD_TPS65912 is not set
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_MFD_TPS80031 is not set
# CONFIG_TWL4030_CORE is not set
# CONFIG_TWL6040_CORE is not set
# CONFIG_MFD_WL1273_CORE is not set
# CONFIG_MFD_LM3533 is not set
# CONFIG_MFD_TC3589X is not set
# CONFIG_MFD_TMIO is not set
# CONFIG_MFD_T7L66XB is not set
# CONFIG_MFD_TC6387XB is not set
# CONFIG_MFD_TC6393XB is not set
# CONFIG_MFD_ARIZONA_I2C is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM831X_I2C is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_WM8994 is not set
CONFIG_REGULATOR=y
CONFIG_REGULATOR_DEBUG=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
# CONFIG_REGULATOR_VIRTUAL_CONSUMER is not set
# CONFIG_REGULATOR_USERSPACE_CONSUMER is not set
# CONFIG_REGULATOR_ACT8865 is not set
# CONFIG_REGULATOR_AD5398 is not set
CONFIG_REGULATOR_DA9063=y
CONFIG_REGULATOR_DA9210=y
# CONFIG_REGULATOR_DA9211 is not set
# CONFIG_REGULATOR_FAN53555 is not set
CONFIG_REGULATOR_GPIO=y
# CONFIG_REGULATOR_ISL9305 is not set
# CONFIG_REGULATOR_ISL6271A is not set
# CONFIG_REGULATOR_LP3971 is not set
# CONFIG_REGULATOR_LP3972 is not set
# CONFIG_REGULATOR_LP872X is not set
# CONFIG_REGULATOR_LP8755 is not set
# CONFIG_REGULATOR_LTC3589 is not set
# CONFIG_REGULATOR_MAX1586 is not set
# CONFIG_REGULATOR_MAX8649 is not set
# CONFIG_REGULATOR_MAX8660 is not set
# CONFIG_REGULATOR_MAX8952 is not set
# CONFIG_REGULATOR_MAX8973 is not set
# CONFIG_REGULATOR_PFUZE100 is not set
# CONFIG_REGULATOR_TPS51632 is not set
# CONFIG_REGULATOR_TPS62360 is not set
# CONFIG_REGULATOR_TPS65023 is not set
# CONFIG_REGULATOR_TPS6507X is not set
# CONFIG_MEDIA_SUPPORT is not set

#
# Graphics support
#

#
# Direct Rendering Manager
#
# CONFIG_DRM is not set

#
# Frame buffer Devices
#
# CONFIG_FB is not set
# CONFIG_FB_SH_MOBILE_MERAM is not set
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
# CONFIG_VGASTATE is not set

#
# Console display driver support
#
CONFIG_DUMMY_CONSOLE=y
# CONFIG_SOUND is not set

#
# HID support
#
CONFIG_HID=y
# CONFIG_HID_BATTERY_STRENGTH is not set
# CONFIG_HIDRAW is not set
# CONFIG_UHID is not set
# CONFIG_HID_GENERIC is not set

#
# Special HID drivers
#
# CONFIG_HID_A4TECH is not set
# CONFIG_HID_ACRUX is not set
# CONFIG_HID_APPLE is not set
# CONFIG_HID_AUREAL is not set
# CONFIG_HID_BELKIN is not set
# CONFIG_HID_CHERRY is not set
# CONFIG_HID_CHICONY is not set
# CONFIG_HID_CYPRESS is not set
# CONFIG_HID_DRAGONRISE is not set
# CONFIG_HID_EMS_FF is not set
# CONFIG_HID_ELECOM is not set
# CONFIG_HID_EZKEY is not set
# CONFIG_HID_KEYTOUCH is not set
# CONFIG_HID_KYE is not set
# CONFIG_HID_WALTOP is not set
# CONFIG_HID_GYRATION is not set
# CONFIG_HID_ICADE is not set
# CONFIG_HID_TWINHAN is not set
# CONFIG_HID_KENSINGTON is not set
# CONFIG_HID_LCPOWER is not set
# CONFIG_HID_LENOVO is not set
# CONFIG_HID_LOGITECH is not set
# CONFIG_HID_MAGICMOUSE is not set
# CONFIG_HID_MICROSOFT is not set
# CONFIG_HID_MONTEREY is not set
# CONFIG_HID_MULTITOUCH is not set
# CONFIG_HID_ORTEK is not set
# CONFIG_HID_PANTHERLORD is not set
# CONFIG_HID_PETALYNX is not set
# CONFIG_HID_PICOLCD is not set
# CONFIG_HID_PLANTRONICS is not set
# CONFIG_HID_PRIMAX is not set
# CONFIG_HID_SAITEK is not set
# CONFIG_HID_SAMSUNG is not set
# CONFIG_HID_SPEEDLINK is not set
# CONFIG_HID_STEELSERIES is not set
# CONFIG_HID_SUNPLUS is not set
# CONFIG_HID_RMI is not set
# CONFIG_HID_GREENASIA is not set
# CONFIG_HID_SMARTJOYPLUS is not set
# CONFIG_HID_TIVO is not set
# CONFIG_HID_TOPSEED is not set
# CONFIG_HID_THRUSTMASTER is not set
# CONFIG_HID_WACOM is not set
# CONFIG_HID_XINMO is not set
# CONFIG_HID_ZEROPLUS is not set
# CONFIG_HID_ZYDACRON is not set
# CONFIG_HID_SENSOR_HUB is not set

#
# I2C HID support
#
# CONFIG_I2C_HID is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
# CONFIG_USB_SUPPORT is not set
# CONFIG_UWB is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_EDAC is not set
CONFIG_RTC_LIB=y
# CONFIG_RTC_CLASS is not set
CONFIG_DMADEVICES=y
# CONFIG_DMADEVICES_DEBUG is not set

#
# DMA Devices
#
# CONFIG_DW_DMAC is not set
CONFIG_RENESAS_DMA=y
CONFIG_SH_DMAE_BASE=y
CONFIG_SH_DMAE=y
# CONFIG_SUDMAC is not set
# CONFIG_RCAR_HPB_DMAE is not set
# CONFIG_RCAR_DMAC is not set
# CONFIG_RENESAS_USB_DMAC is not set
# CONFIG_FSL_EDMA is not set
# CONFIG_NBPFAXI_DMA is not set
CONFIG_DMA_ENGINE=y
CONFIG_DMA_OF=y

#
# DMA Clients
#
# CONFIG_ASYNC_TX_DMA is not set
# CONFIG_DMATEST is not set
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
# CONFIG_VIRT_DRIVERS is not set

#
# Virtio drivers
#
# CONFIG_VIRTIO_MMIO is not set

#
# Microsoft Hyper-V guest support
#
# CONFIG_STAGING is not set
# CONFIG_CHROME_PLATFORMS is not set
CONFIG_CLKDEV_LOOKUP=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_COMMON_CLK=y

#
# Common Clock Framework
#
# CONFIG_COMMON_CLK_SI5351 is not set
# CONFIG_COMMON_CLK_SI570 is not set
# CONFIG_CLK_QORIQ is not set
# CONFIG_COMMON_CLK_PXA is not set
# CONFIG_COMMON_CLK_CDCE706 is not set

#
# Hardware Spinlock drivers
#

#
# Clock Source drivers
#
CONFIG_CLKSRC_OF=y
CONFIG_ARM_ARCH_TIMER=y
CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
# CONFIG_ATMEL_PIT is not set
CONFIG_SYS_SUPPORTS_SH_CMT=y
CONFIG_SYS_SUPPORTS_EM_STI=y
CONFIG_SH_TIMER_CMT=y
# CONFIG_SH_TIMER_MTU2 is not set
# CONFIG_SH_TIMER_TMU is not set
CONFIG_EM_TIMER_STI=y
# CONFIG_MAILBOX is not set
# CONFIG_IOMMU_SUPPORT is not set

#
# Remoteproc drivers
#
# CONFIG_STE_MODEM_RPROC is not set

#
# Rpmsg drivers
#

#
# SOC (System On Chip) specific Drivers
#
# CONFIG_SOC_TI is not set
# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_PWM is not set
CONFIG_IRQCHIP=y
CONFIG_ARM_GIC=y
CONFIG_RENESAS_IRQC=y
# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set
# CONFIG_FMC is not set

#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_BCM_KONA_USB2_PHY is not set
# CONFIG_POWERCAP is not set
# CONFIG_MCB is not set

#
# Android
#
# CONFIG_ANDROID is not set

#
# Firmware Drivers
#
# CONFIG_FIRMWARE_MEMMAP is not set

#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
# CONFIG_FS_POSIX_ACL is not set
CONFIG_FILE_LOCKING=y
CONFIG_FSNOTIFY=y
# CONFIG_DNOTIFY is not set
CONFIG_INOTIFY_USER=y
# CONFIG_FANOTIFY is not set
# CONFIG_QUOTA is not set
# CONFIG_QUOTACTL is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_FUSE_FS is not set
# CONFIG_OVERLAY_FS is not set

#
# Caches
#
# CONFIG_FSCACHE is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_KERNFS=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set
# CONFIG_TMPFS_XATTR is not set
# CONFIG_HUGETLB_PAGE is not set
CONFIG_CONFIGFS_FS=y
# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_NETWORK_FILESYSTEMS is not set
# CONFIG_NLS is not set
# CONFIG_DLM is not set

#
# Kernel hacking
#

#
# printk and dmesg options
#
CONFIG_PRINTK_TIME=y
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_DYNAMIC_DEBUG is not set

#
# Compile-time checks and compiler options
#
# CONFIG_DEBUG_INFO is not set
CONFIG_ENABLE_WARN_DEPRECATED=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_FRAME_WARN=1024
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_READABLE_ASM is not set
# CONFIG_UNUSED_SYMBOLS is not set
# CONFIG_PAGE_OWNER is not set
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_SECTION_MISMATCH is not set
CONFIG_FRAME_POINTER=y
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# CONFIG_MAGIC_SYSRQ is not set
CONFIG_DEBUG_KERNEL=y

#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
# CONFIG_DEBUG_PAGEALLOC is not set
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_DEBUG_SLAB is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_MEMORY_INIT is not set
# CONFIG_DEBUG_HIGHMEM is not set
# CONFIG_DEBUG_SHIRQ is not set

#
# Debug Lockups and Hangs
#
# CONFIG_LOCKUP_DETECTOR is not set
# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_ON_OOPS_VALUE=0
CONFIG_PANIC_TIMEOUT=0
CONFIG_SCHED_DEBUG=y
# CONFIG_SCHEDSTATS is not set
# CONFIG_SCHED_STACK_END_CHECK is not set
# CONFIG_DEBUG_TIMEKEEPING is not set
# CONFIG_TIMER_STATS is not set

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y
CONFIG_DEBUG_LOCK_ALLOC=y
CONFIG_PROVE_LOCKING=y
CONFIG_LOCKDEP=y
# CONFIG_LOCK_STAT is not set
CONFIG_DEBUG_LOCKDEP=y
# CONFIG_DEBUG_ATOMIC_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_LOCK_TORTURE_TEST is not set
CONFIG_TRACE_IRQFLAGS=y
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_PI_LIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_DEBUG_CREDENTIALS is not set

#
# RCU Debugging
#
CONFIG_PROVE_RCU=y
# CONFIG_PROVE_RCU_REPEATEDLY is not set
# CONFIG_SPARSE_RCU_POINTER is not set
# CONFIG_TORTURE_TEST is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_TRACE is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACING_SUPPORT=y
# CONFIG_FTRACE is not set

#
# Runtime Testing
#
# CONFIG_TEST_LIST_SORT is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_RBTREE_TEST is not set
# CONFIG_ATOMIC64_SELFTEST is not set
# CONFIG_TEST_HEXDUMP is not set
# CONFIG_TEST_STRING_HELPERS is not set
# CONFIG_TEST_KSTRTOX is not set
# CONFIG_TEST_RHASHTABLE is not set
# CONFIG_DMA_API_DEBUG is not set
# CONFIG_TEST_FIRMWARE is not set
# CONFIG_TEST_UDELAY is not set
# CONFIG_MEMTEST is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
# CONFIG_ARM_PTDUMP is not set
# CONFIG_STRICT_DEVMEM is not set
# CONFIG_ARM_UNWIND is not set
# CONFIG_DEBUG_USER is not set
# CONFIG_DEBUG_LL is not set
CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
# CONFIG_DEBUG_UART_8250 is not set
# CONFIG_DEBUG_UART_BCM63XX is not set
CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
# CONFIG_PID_IN_CONTEXTIDR is not set
# CONFIG_CORESIGHT is not set

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_DEFAULT_SECURITY=""
CONFIG_CRYPTO=y

#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
# CONFIG_CRYPTO_MANAGER is not set
# CONFIG_CRYPTO_MANAGER2 is not set
# CONFIG_CRYPTO_USER is not set
# CONFIG_CRYPTO_GF128MUL is not set
# CONFIG_CRYPTO_NULL is not set
# CONFIG_CRYPTO_CRYPTD is not set
# CONFIG_CRYPTO_MCRYPTD is not set
# CONFIG_CRYPTO_AUTHENC is not set

#
# Authenticated Encryption with Associated Data
#
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_SEQIV is not set

#
# Block modes
#
# CONFIG_CRYPTO_CBC is not set
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_CTS is not set
# CONFIG_CRYPTO_ECB is not set
# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_PCBC is not set
# CONFIG_CRYPTO_XTS is not set

#
# Hash modes
#
# CONFIG_CRYPTO_CMAC is not set
# CONFIG_CRYPTO_HMAC is not set
# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_VMAC is not set

#
# Digest
#
# CONFIG_CRYPTO_CRC32C is not set
# CONFIG_CRYPTO_CRC32 is not set
# CONFIG_CRYPTO_CRCT10DIF is not set
# CONFIG_CRYPTO_GHASH is not set
# CONFIG_CRYPTO_MD4 is not set
# CONFIG_CRYPTO_MD5 is not set
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_RMD128 is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_RMD256 is not set
# CONFIG_CRYPTO_RMD320 is not set
# CONFIG_CRYPTO_SHA1 is not set
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_TGR192 is not set
# CONFIG_CRYPTO_WP512 is not set

#
# Ciphers
#
CONFIG_CRYPTO_AES=y
# CONFIG_CRYPTO_ANUBIS is not set
# CONFIG_CRYPTO_ARC4 is not set
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_CAST5 is not set
# CONFIG_CRYPTO_CAST6 is not set
# CONFIG_CRYPTO_DES is not set
# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_SALSA20 is not set
# CONFIG_CRYPTO_SEED is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_TEA is not set
# CONFIG_CRYPTO_TWOFISH is not set

#
# Compression
#
# CONFIG_CRYPTO_DEFLATE is not set
# CONFIG_CRYPTO_ZLIB is not set
# CONFIG_CRYPTO_LZO is not set
# CONFIG_CRYPTO_LZ4 is not set
# CONFIG_CRYPTO_LZ4HC is not set

#
# Random Number Generation
#
CONFIG_CRYPTO_ANSI_CPRNG=y
# CONFIG_CRYPTO_DRBG_MENU is not set
# CONFIG_CRYPTO_USER_API_HASH is not set
# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
# CONFIG_CRYPTO_USER_API_RNG is not set
CONFIG_CRYPTO_HW=y
# CONFIG_ARM_CRYPTO is not set
# CONFIG_BINARY_PRINTF is not set

#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_HAVE_ARCH_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IO=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
# CONFIG_CRC8 is not set
# CONFIG_AUDIT_ARCH_COMPAT_GENERIC is not set
# CONFIG_RANDOM32_SELFTEST is not set
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_XZ_DEC=y
# CONFIG_XZ_DEC_X86 is not set
# CONFIG_XZ_DEC_POWERPC is not set
# CONFIG_XZ_DEC_IA64 is not set
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_ARMTHUMB=y
# CONFIG_XZ_DEC_SPARC is not set
CONFIG_XZ_DEC_BCJ=y
# CONFIG_XZ_DEC_TEST is not set
CONFIG_DECOMPRESS_XZ=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_DMA=y
CONFIG_DQL=y
CONFIG_NLATTR=y
CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
# CONFIG_AVERAGE is not set
# CONFIG_CORDIC is not set
# CONFIG_DDR is not set
CONFIG_LIBFDT=y
CONFIG_ARCH_HAS_SG_CHAIN=y
# CONFIG_VIRTUALIZATION is not set

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Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Russell King - ARM Linux]

On Fri, Jul 03, 2015 at 01:07:31PM +0200, Wolfram Sang wrote:
> > Please share your .config file for this case.  Thanks.
> 
> Here it goes...

Please try:

sed -i s/IRQSOFF_TRACER/TRACE_IRQFLAGS/ arch/arm/kernel/entry-armv.S

Thanks.

-- 
FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up
according to speedtest.net.

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Wolfram Sang]

[-- Attachment #1: Type: text/plain, Size: 525 bytes --]

On Fri, Jul 03, 2015 at 12:13:58PM +0100, Russell King - ARM Linux wrote:
> On Fri, Jul 03, 2015 at 01:07:31PM +0200, Wolfram Sang wrote:
> > > Please share your .config file for this case.  Thanks.
> > 
> > Here it goes...
> 
> Please try:
> 
> sed -i s/IRQSOFF_TRACER/TRACE_IRQFLAGS/ arch/arm/kernel/entry-armv.S

Yes, this fixes the lockdep issue with HRTIMERS.

For completeness, it does not fix the freeze without HRTIMERS.

Thanks Russell!

Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>


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Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Thomas Gleixner]

On Fri, 3 Jul 2015, Wolfram Sang wrote:
> Hi Simon,
> 
> > I have observed what appears to be a regression while testing next-20150702
> > which seems to be caused by 2951d5c031a3 ("tick: broadcast: Prevent
> > livelock from event handler").
> 
> Does reverting help? I see a similar case with your branch
> renesas-devel-20150629-v4.1 which does not include both commits.

This branch has actually none of the clockevent/tick related changes
which are in next/linus tree. So 2951d5c031a3 is hardly the culprit.

> For this branch, if I select CONFIG_NO_HZ_IDLE and *no* CONFIG_HIGH_RES_TIMERS,

So with high res timers it boots. Can you please provide the output of
/proc/timer_list for that case?

Thanks,

	tglx

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Wolfram Sang]

[-- Attachment #1: Type: text/plain, Size: 2031 bytes --]


> So with high res timers it boots. Can you please provide the output of
> /proc/timer_list for that case?

Sure:

Timer List Version: v0.7
HRTIMER_MAX_CLOCK_BASES: 4
now at 40752899169 nsecs

cpu: 0
 clock 0:
  .base:       c03aa990
  .index:      0
  .resolution: 1 nsecs
  .get_time:   ktime_get
  .offset:     0 nsecs
active timers:
 #0: tick_cpu_sched, tick_sched_timer, S:01
 # expires at 40760000000-40760000000 nsecs [in 7100831 to 7100831 nsecs]
 #1: sched_clock_timer, sched_clock_poll, S:01
 # expires at 21474836475000000-21474836475000000 nsecs [in 21474795722100831 to 21474795722100831 nsecs]
 clock 1:
  .base:       c03aa9c8
  .index:      1
  .resolution: 1 nsecs
  .get_time:   ktime_get_real
  .offset:     0 nsecs
active timers:
 clock 2:
  .base:       c03aaa00
  .index:      2
  .resolution: 1 nsecs
  .get_time:   ktime_get_boottime
  .offset:     0 nsecs
active timers:
 clock 3:
  .base:       c03aaa38
  .index:      3
  .resolution: 1 nsecs
  .get_time:   ktime_get_clocktai
  .offset:     0 nsecs
active timers:
  .expires_next   : 40760000000 nsecs
  .hres_active    : 1
  .nr_events      : 770
  .nr_retries     : 29
  .nr_hangs       : 0
  .max_hang_time  : 0 nsecs
  .nohz_mode      : 2
  .last_tick      : 40400000000 nsecs
  .tick_stopped   : 0
  .idle_jiffies   : 4294941337
  .idle_calls     : 378
  .idle_sleeps    : 354
  .idle_entrytime : 40743316650 nsecs
  .idle_waketime  : 40743316650 nsecs
  .idle_exittime  : 40743377685 nsecs
  .idle_sleeptime : 37586425789 nsecs
  .iowait_sleeptime: 0 nsecs
  .last_jiffies   : 4294941368
  .next_jiffies   : 4294941389
  .idle_expires   : 40930000000 nsecs
jiffies: 4294941371

Tick Device: mode:     1
Per CPU device: 0
Clock Event Device: e0180000.timer
 max_delta_ns:   131071523464982
 min_delta_ns:   61035
 mult:           70369
 shift:          31
 mode:           3
 next_event:     40760000000 nsecs
 set_next_event: em_sti_clock_event_next
 set_mode:       em_sti_clock_event_mode
 event_handler:  hrtimer_interrupt
 retries:        0


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Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Thomas Gleixner]

On Fri, 3 Jul 2015, Wolfram Sang wrote:

> 
> > So with high res timers it boots. Can you please provide the output of
> > /proc/timer_list for that case?

> Tick Device: mode:     1
> Per CPU device: 0
> Clock Event Device: e0180000.timer
>  max_delta_ns:   131071523464982
>  min_delta_ns:   61035
>  mult:           70369
>  shift:          31
>  mode:           3
>  next_event:     40760000000 nsecs
>  set_next_event: em_sti_clock_event_next
>  set_mode:       em_sti_clock_event_mode
>  event_handler:  hrtimer_interrupt
>  retries:        0

So this is a single core machine and uses the em_sti timer w/o the
broadcast nonsense. In Simons case it looks like em_sti is used as
broadcast device.

Though the issues you see in the highres=n case might be the same as
the ones Simon is observing.

So in that nohz=y highres=n case, does adding idle=poll on the command
line fix the issue?

Thanks,

	tglx

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Wolfram Sang]

[-- Attachment #1: Type: text/plain, Size: 546 bytes --]


> So this is a single core machine and uses the em_sti timer w/o the
> broadcast nonsense. In Simons case it looks like em_sti is used as
> broadcast device.

We use the same board. Just my kernel has SMP=n.

> Though the issues you see in the highres=n case might be the same as
> the ones Simon is observing.

I hope so. One good thing about the issue I see is that it is 100%
reproducable.

> So in that nohz=y highres=n case, does adding idle=poll on the command
> line fix the issue?

Nope, still hangs.

Thanks for assisting!

   Wolfram


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Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Sudeep Holla]

On 03/07/15 15:37, Wolfram Sang wrote:
>
>> So this is a single core machine and uses the em_sti timer w/o the
>> broadcast nonsense. In Simons case it looks like em_sti is used as
>> broadcast device.
>
> We use the same board. Just my kernel has SMP=n.
>

If it's UP build, then GENERIC_CLOCKEVENTS_BROADCAST is disabled. You
may be hitting the issue I reported[1] and is still under discussion.

Regards,
Sudeep

[1] https://lkml.org/lkml/2015/6/25/271

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Thomas Gleixner]

On Fri, 3 Jul 2015, Wolfram Sang wrote:
> > So this is a single core machine and uses the em_sti timer w/o the
> > broadcast nonsense. In Simons case it looks like em_sti is used as
> > broadcast device.
> 
> We use the same board. Just my kernel has SMP=n.
> 
> > Though the issues you see in the highres=n case might be the same as
> > the ones Simon is observing.
> 
> I hope so. One good thing about the issue I see is that it is 100%
> reproducable.
> 
> > So in that nohz=y highres=n case, does adding idle=poll on the command
> > line fix the issue?
> 
> Nope, still hangs.

Ok. So it's unrelated to deep idle states. Any chance of poking with
JTAG at the frozen box? If not, are there GPIOs which you could use to
monitor certain state?

Thanks,

	tglx

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Thomas Gleixner]

On Fri, 3 Jul 2015, Sudeep Holla wrote:
> On 03/07/15 15:37, Wolfram Sang wrote:
> > 
> > > So this is a single core machine and uses the em_sti timer w/o the
> > > broadcast nonsense. In Simons case it looks like em_sti is used as
> > > broadcast device.
> > 
> > We use the same board. Just my kernel has SMP=n.
> > 
> 
> If it's UP build, then GENERIC_CLOCKEVENTS_BROADCAST is disabled. You
> may be hitting the issue I reported[1] and is still under discussion.

Nope. The UP version uses a non affected timer.

Thanks,

	tglx

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Sudeep Holla]

On 03/07/15 15:54, Thomas Gleixner wrote:
> On Fri, 3 Jul 2015, Sudeep Holla wrote:
>> On 03/07/15 15:37, Wolfram Sang wrote:
>>>
>>>> So this is a single core machine and uses the em_sti timer w/o the
>>>> broadcast nonsense. In Simons case it looks like em_sti is used as
>>>> broadcast device.
>>>
>>> We use the same board. Just my kernel has SMP=n.
>>>
>>
>> If it's UP build, then GENERIC_CLOCKEVENTS_BROADCAST is disabled. You
>> may be hitting the issue I reported[1] and is still under discussion.
>
> Nope. The UP version uses a non affected timer.
>

Ah OK, sorry for the noise then.

Regards,
Sudeep

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Wolfram Sang]

[-- Attachment #1: Type: text/plain, Size: 266 bytes --]


> Ok. So it's unrelated to deep idle states. Any chance of poking with
> JTAG at the frozen box? If not, are there GPIOs which you could use to
> monitor certain state?

No JTAGger here at the moment. And no manual/schematics for this board
:(

I'll ask around...


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Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Thomas Gleixner]

On Fri, 3 Jul 2015, Wolfram Sang wrote:
> > Ok. So it's unrelated to deep idle states. Any chance of poking with
> > JTAG at the frozen box? If not, are there GPIOs which you could use to
> > monitor certain state?
> 
> No JTAGger here at the moment. And no manual/schematics for this board
> :(

Ok. One more check please. Does nohz=off on the command line fix/hide
the issue as well?

Thanks,

	tglx

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Wolfram Sang]

[-- Attachment #1: Type: text/plain, Size: 139 bytes --]


> Ok. One more check please. Does nohz=off on the command line fix/hide
> the issue as well?

Yes, it does. It boots to the prompt then.


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Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Thomas Gleixner]

On Fri, 3 Jul 2015, Wolfram Sang wrote:
> > Ok. One more check please. Does nohz=off on the command line fix/hide
> > the issue as well?
> 
> Yes, it does. It boots to the prompt then.

So something is fishy with this timer. In your UP setting we don't
have any interaction with the broadcast stuff. It's just the single
em_sti timer involved.

Now looking at the code I notice, that this is one of the overly
clever designed compare register based trainwrecks.

Can you try the patch below, whether it makes a difference?

Thanks,

	tglx
---
diff --git a/drivers/clocksource/em_sti.c b/drivers/clocksource/em_sti.c
index dc3c6ee04aaa..41d8035d294e 100644
--- a/drivers/clocksource/em_sti.c
+++ b/drivers/clocksource/em_sti.c
@@ -308,7 +308,7 @@ static void em_sti_register_clockevent(struct em_sti_priv *p)
 	dev_info(&p->pdev->dev, "used for clock events\n");
 
 	/* Register with dummy 1 Hz value, gets updated in ->set_mode() */
-	clockevents_config_and_register(ced, 1, 2, 0xffffffff);
+	clockevents_config_and_register(ced, 1, 100, 0xffffffff);
 }
 
 static int em_sti_probe(struct platform_device *pdev)

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Wolfram Sang]

[-- Attachment #1: Type: text/plain, Size: 218 bytes --]


> Can you try the patch below, whether it makes a difference?

It doesn't. Board locks again.

> -	clockevents_config_and_register(ced, 1, 2, 0xffffffff);
> +	clockevents_config_and_register(ced, 1, 100, 0xffffffff);

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Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Geert Uytterhoeven]

Hi Wolfram,

On Fri, Jul 3, 2015 at 4:37 PM, Wolfram Sang <wsa@the-dreams.de> wrote:
>> So this is a single core machine and uses the em_sti timer w/o the
>> broadcast nonsense. In Simons case it looks like em_sti is used as
>> broadcast device.
>
> We use the same board. Just my kernel has SMP=n.

Unlike our other multi-core A9 SoCs, emev2.dtsi doesn't have a node
for the arm,cortex-a9-twd-timer?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Magnus Damm]

Hi Wolfram,

Thanks for investigating this.

On Sat, Jul 4, 2015 at 12:09 AM, Wolfram Sang <wsa@the-dreams.de> wrote:
>
>> Ok. So it's unrelated to deep idle states. Any chance of poking with
>> JTAG at the frozen box? If not, are there GPIOs which you could use to
>> monitor certain state?
>
> No JTAGger here at the moment. And no manual/schematics for this board
> :(

Since EMEV2 includes a dual Cortex-A9 you can use OpenOCD with a
Flyswatter JTAG.

I've tried the following lines for the openocd configuration file, if
you need any help let me know!

# --- emev2 (CA9 Dual) on KZM9D ---
#target create emev2.cpu0 cortex_a -chain-position auto0.tap -dbgbase
0x80010000 -coreid 0
#target create emev2.cpu1 cortex_a -chain-position auto0.tap -dbgbase
0x80012000 -coreid 1

Cheers,

/ magnus

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Magnus Damm]

Hi Geert,

On Sat, Jul 4, 2015 at 2:02 AM, Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> Hi Wolfram,
>
> On Fri, Jul 3, 2015 at 4:37 PM, Wolfram Sang <wsa@the-dreams.de> wrote:
>>> So this is a single core machine and uses the em_sti timer w/o the
>>> broadcast nonsense. In Simons case it looks like em_sti is used as
>>> broadcast device.
>>
>> We use the same board. Just my kernel has SMP=n.
>
> Unlike our other multi-core A9 SoCs, emev2.dtsi doesn't have a node
> for the arm,cortex-a9-twd-timer?

That's right, the TWD was never enabled on upstream EMEV2. I believe
it is documented in the data sheet though, however the actual
vendor-specific glue is a bit different compared to other SoCs from
Renesas Electronics - this most likely since EMEV2 was initially made
by NEC Electronics instead of Renesas. I've been told that it was one
of the earlier Cortex-A9 designs around so some special surprises may
exist!

Cheers,

/ magnus

Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler"

[Simon Horman]

Hi Thomas,

On Fri, Jul 03, 2015 at 04:53:49PM +0200, Thomas Gleixner wrote:
> On Fri, 3 Jul 2015, Wolfram Sang wrote:
> > > So this is a single core machine and uses the em_sti timer w/o the
> > > broadcast nonsense. In Simons case it looks like em_sti is used as
> > > broadcast device.
> > 
> > We use the same board. Just my kernel has SMP=n.
> > 
> > > Though the issues you see in the highres=n case might be the same as
> > > the ones Simon is observing.
> > 
> > I hope so. One good thing about the issue I see is that it is 100%
> > reproducable.
> > 
> > > So in that nohz=y highres=n case, does adding idle=poll on the command
> > > line fix the issue?
> > 
> > Nope, still hangs.
> 
> Ok. So it's unrelated to deep idle states. Any chance of poking with
> JTAG at the frozen box? If not, are there GPIOs which you could use to
> monitor certain state?

Sorry for the delay, it has taken me a while to secure a JTAG.

I now have one hooked up to my emev2/kzm9d board; though I must
confess I am not at all experienced in driving it.

As far as I can tell, and to be quite honest I would not be at all
surprised if I am mistaken, the CPUs are sitting here:

pc: 0xC001F7E8, which corresponds to cpu_v7_do_idle

Hooking up GDB I see:

#0  cpu_v7_do_idle () at arch/arm/mm/proc-v7.S:74
#1  0xc0010734 in arch_cpu_idle () at arch/arm/kernel/process.c:72
#2  0xc04c406c in schedule_preempt_disabled () at kernel/sched/core.c:3115
#3  0xc0055130 in cpu_idle_loop () at kernel/sched/idle.c:279
#4  cpu_startup_entry (state=CPUHP_OFFLINE) at kernel/sched/idle.c:301
#5  0xc04bf440 in rest_init () at init/main.c:412
#6  0xc061bc6c in start_kernel () at init/main.c:683
#7  0x4000807c in ?? ()


I am using the renesas-devel-20150729-v4.2-rc4 tag of the my renesas tree
which, as the name suggests, is based on v4.2-rc4.