Considering that most of devices in this platform running Debian are NASes that spend most of the time idling, this could be a worthwhile option to enable.
The size of vmlinuz with this option enabled is 2066520.
-- Package-specific info:
** Version:
Linux version 4.0.0-2-kirkwood (
debian-kernel@lists.debian.org) (gcc version 4.9.2 (Debian 4.9.2-10) ) #1 Debian 4.0.4-1 (2015-05-26)
** Command line:
console=ttyS0,115200 root=/dev/ram initrd=0xa00000,0x900000 ramdisk=34816
** Tainted: O (4096)
* Out-of-tree module has been loaded.
** Kernel log:
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 4.0.0-2-kirkwood (
debian-kernel@lists.debian.org) (gcc version 4.9.2 (Debian 4.9.2-10) ) #1 Debian 4.0.4-1 (2015-05-26)
[ 0.000000] CPU: Feroceon 88FR131 [56251311] revision 1 (ARMv5TE), cr=0005397f
[ 0.000000] CPU: VIVT data cache, VIVT instruction cache
[ 0.000000] Machine model: QNAP TS219 family
[ 0.000000] Memory policy: Data cache writeback
[ 0.000000] On node 0 totalpages: 131072
[ 0.000000] free_area_init_node: node 0, pgdat c05c16fc, node_mem_map dfbf8000
[ 0.000000] DMA zone: 1024 pages used for memmap
[ 0.000000] DMA zone: 0 pages reserved
[ 0.000000] DMA zone: 131072 pages, LIFO batch:31
[ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[ 0.000000] pcpu-alloc: [0] 0
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 130048
[ 0.000000] Kernel command line: console=ttyS0,115200 root=/dev/ram initrd=0xa00000,0x900000 ramdisk=34816
[ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Memory: 504240K/524288K available (3866K kernel code, 298K rwdata, 1476K rodata, 272K init, 287K bss, 20048K reserved, 0K cma-reserved, 0K highmem)
[ 0.000000] Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
vmalloc : 0xe0800000 - 0xff000000 ( 488 MB)
lowmem : 0xc0000000 - 0xe0000000 ( 512 MB)
pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
.text : 0xc0008000 - 0xc053fd80 (5344 kB)
.init : 0xc0540000 - 0xc0584000 ( 272 kB)
.data : 0xc0584000 - 0xc05ce8e0 ( 299 kB)
.bss : 0xc05ce8e0 - 0xc0616898 ( 288 kB)
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000012] sched_clock: 32 bits at 200MHz, resolution 5ns, wraps every 21474836475ns
[ 0.000321] Console: colour dummy device 80x30
[ 0.000345] Calibrating delay loop... 1587.20 BogoMIPS (lpj=3174400)
[ 0.020067] pid_max: default: 32768 minimum: 301
[ 0.020168] Security Framework initialized
[ 0.020206] Yama: disabled by default; enable with sysctl kernel.yama.*
[ 0.020295] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.020311] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.020883] Initializing cgroup subsys blkio
[ 0.020905] Initializing cgroup subsys devices
[ 0.020923] Initializing cgroup subsys freezer
[ 0.020939] Initializing cgroup subsys net_cls
[ 0.020962] Initializing cgroup subsys perf_event
[ 0.020982] Initializing cgroup subsys net_prio
[ 0.021054] CPU: Testing write buffer coherency: ok
[ 0.021127] ftrace: allocating 16148 entries in 32 pages
[ 0.038871] Setting up static identity map for 0x3aadf0 - 0x3aae2c
[ 0.039084] mvebu-soc-id: MVEBU SoC ID=0x6282, Rev=0x1
[ 0.041623] devtmpfs: initialized
[ 0.042801] pinctrl core: initialized pinctrl subsystem
[ 0.047154] NET: Registered protocol family 16
[ 0.047442] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.048292] cpuidle: using governor ladder
[ 0.048313] cpuidle: using governor menu
[ 0.048571] Feroceon L2: Enabling L2
[ 0.048604] Feroceon L2: Cache support initialised.
[ 0.048810] [Firmware Info]: /ocp@f1000000/ethernet-controller@72000/ethernet0-port@0: local-mac-address is not set
[ 0.051370] No ATAGs?
[ 0.055110] Switched to clocksource orion_clocksource
[ 0.068936] NET: Registered protocol family 2
[ 0.069523] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.069578] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.069629] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.069675] TCP: reno registered
[ 0.069685] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.069704] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.069862] NET: Registered protocol family 1
[ 0.069902] PCI: CLS 0 bytes, default 32
[ 0.070084] Unpacking initramfs...
[ 0.412158] Freeing initrd memory: 9216K (c0a00000 - c1300000)
[ 0.413026] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 0.413095] audit: initializing netlink subsys (disabled)
[ 0.413166] audit: type=2000 audit(0.408:1): initialized
[ 0.413757] zpool: loaded
[ 0.413947] VFS: Disk quotas dquot_6.5.2
[ 0.414005] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.414088] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc.
[ 0.415953] alg: No test for stdrng (krng)
[ 0.416055] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
[ 0.416181] io scheduler noop registered
[ 0.416221] io scheduler cfq registered (default)
[ 0.417207] kirkwood-pinctrl f1010000.pin-controller: registered pinctrl driver
[ 0.417663] irq: Cannot allocate irq_descs @ IRQ36, assuming pre-allocated
[ 0.417928] irq: Cannot allocate irq_descs @ IRQ68, assuming pre-allocated
[ 0.418536] mvebu-pcie mbus:pcie-controller: PCI host bridge to bus 0000:00
[ 0.418550] pci_bus 0000:00: root bus resource [io 0x1000-0xfffff]
[ 0.418560] pci_bus 0000:00: root bus resource [mem 0xe0000000-0xefffffff]
[ 0.418569] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.418592] pci 0000:00:01.0: [11ab:6282] type 01 class 0x060400
[ 0.418772] pci 0000:00:02.0: [11ab:6282] type 01 class 0x060400
[ 0.418929] PCI: bus0: Fast back to back transfers disabled
[ 0.418939] pci 0000:00:01.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[ 0.418950] pci 0000:00:02.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[ 0.419041] PCI: bus1: Fast back to back transfers enabled
[ 0.419053] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[ 0.419204] pci 0000:02:00.0: [1b6f:7023] type 00 class 0x0c0330
[ 0.419248] pci 0000:02:00.0: reg 0x10: [mem 0x98000000-0x98007fff 64bit]
[ 0.419404] pci 0000:02:00.0: supports D1 D2
[ 0.419413] pci 0000:02:00.0: PME# supported from D0 D1 D2 D3hot
[ 0.419584] PCI: bus2: Fast back to back transfers disabled
[ 0.419595] pci_bus 0000:02: busn_res: [bus 02-ff] end is updated to 02
[ 0.419661] pci 0000:00:02.0: BAR 8: assigned [mem 0xe0000000-0xe00fffff]
[ 0.419672] pci 0000:00:01.0: PCI bridge to [bus 01]
[ 0.419688] pci 0000:02:00.0: BAR 0: assigned [mem 0xe0000000-0xe0007fff 64bit]
[ 0.419712] pci 0000:00:02.0: PCI bridge to [bus 02]
[ 0.419722] pci 0000:00:02.0: bridge window [mem 0xe0000000-0xe00fffff]
[ 0.419826] pci 0000:00:02.0: enabling device (0140 -> 0142)
[ 0.420054] mv_xor f1060800.xor: Marvell shared XOR driver
[ 0.439186] mv_xor f1060800.xor: Marvell XOR: ( xor cpy )
[ 0.459182] mv_xor f1060800.xor: Marvell XOR: ( xor cpy )
[ 0.459288] mv_xor f1060900.xor: Marvell shared XOR driver
[ 0.479181] mv_xor f1060900.xor: Marvell XOR: ( xor cpy )
[ 0.499182] mv_xor f1060900.xor: Marvell XOR: ( xor cpy )
[ 0.499455] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
[ 0.500285] console [ttyS0] disabled
[ 0.500327] f1012000.serial: ttyS0 at MMIO 0xf1012000 (irq = 28, base_baud = 12500000) is a 16550A
[ 1.099201] console [ttyS0] enabled
[ 1.103096] f1012100.serial: ttyS1 at MMIO 0xf1012100 (irq = 29, base_baud = 12500000) is a 16550A
[ 1.116911] m25p80 spi0.0: found n25q128a13, expected m25p128
[ 1.122724] m25p80 spi0.0: n25q128a13 (16384 Kbytes)
[ 1.127751] 6 ofpart partitions found on MTD device spi0.0
[ 1.133266] Creating 6 MTD partitions on "spi0.0":
[ 1.138090] 0x000000000000-0x000000080000 : "U-Boot"
[ 1.143849] 0x000000200000-0x000000400000 : "Kernel"
[ 1.149532] 0x000000400000-0x000000d00000 : "RootFS1"
[ 1.155312] 0x000000d00000-0x000001000000 : "RootFS2"
[ 1.161061] 0x000000080000-0x0000000c0000 : "U-Boot Config"
[ 1.167380] 0x0000000c0000-0x000000200000 : "NAS Config"
[ 1.173730] mousedev: PS/2 mouse device common for all mice
[ 2.183194] rtc-mv f1010300.rtc: internal RTC not ticking
[ 2.188745] i2c /dev entries driver
[ 2.194269] rtc (null): invalid alarm value: 1900-1-4 1193032:44:16
[ 2.200728] rtc-s35390a 0-0030: rtc core: registered rtc-s35390a as rtc0
[ 2.208051] ledtrig-cpu: registered to indicate activity on CPUs
[ 2.214361] TCP: cubic registered
[ 2.217713] NET: Registered protocol family 17
[ 2.222706] registered taskstats version 1
[ 2.227847] rtc-s35390a 0-0030: setting system clock to 2015-06-02 21:03:09 UTC (1433278989)
[ 2.238082] Freeing unused kernel memory: 272K (c0540000 - c0584000)
[ 2.297034] systemd-udevd[53]: starting version 215
[ 2.312629] random: systemd-udevd urandom read with 5 bits of entropy available
[ 2.453580] SCSI subsystem initialized
[ 2.504073] libata version 3.00 loaded.
[ 2.505791] sata_mv f1080000.sata: version 1.28
[ 2.506015] sata_mv f1080000.sata: slots 32 ports 2
[ 2.543072] scsi host0: sata_mv
[ 2.561067] scsi host1: sata_mv
[ 2.566207] ata1: SATA max UDMA/133 irq 35
[ 2.570350] ata2: SATA max UDMA/133 irq 35
[ 2.891137] ata1: SATA link down (SStatus 0 SControl F300)
[ 3.371137] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl F300)
[ 3.391167] ata2.00: ATA-8: MD05000-BQDW-RO, 01.03B01, max UDMA/133
[ 3.397470] ata2.00: 976773168 sectors, multi 0: LBA48 NCQ (depth 31/32)
[ 3.419175] ata2.00: configured for UDMA/133
[ 3.423766] scsi 1:0:0:0: Direct-Access ATA MD05000-BQDW-RO 3B01 PQ: 0 ANSI: 5
[ 3.444257] sd 1:0:0:0: [sda] 976773168 512-byte logical blocks: (500 GB/465 GiB)
[ 3.452016] sd 1:0:0:0: [sda] Write Protect is off
[ 3.456851] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 3.456937] sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 3.501484] sda: sda1 sda2 sda3 < sda5 >
[ 3.507599] sd 1:0:0:0: [sda] Attached SCSI disk
[ 5.125169] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
[ 5.694102] random: nonblocking pool is initialized
[ 5.702768] systemd[1]: systemd 215 running in system mode. (+PAM +AUDIT +SELINUX +IMA +SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ -SECCOMP -APPARMOR)
[ 5.716395] systemd[1]: Detected architecture 'arm'.
** Model information
Hardware : Marvell Kirkwood (Flattened Device Tree)
Revision : 0000
** Loaded modules:
bluetooth
rfkill
cpufreq_powersave
cpufreq_conservative
cpufreq_ondemand
cpufreq_stats
cpufreq_userspace
ctr
twofish_generic
twofish_common
camellia_generic
serpent_generic
blowfish_generic
blowfish_common
cast5_generic
cast_common
des_generic
cbc
cmac
xcbc
rmd160
sha512_generic
sha256_generic
crypto_null
af_key
xfrm_algo
marvell
ehci_orion
sg
mvmdio
mv643xx_eth
ehci_hcd
hmac
xhci_pci
of_mdio
libphy
xhci_hcd
sha1_generic
sha1_arm
usbcore
orion_wdt
usb_common
kirkwood_thermal
mv_cesa
evdev
cryptodev(O)
loop
gpio_keys
ipv6
autofs4
ext4
mbcache
jbd2
sd_mod
sata_mv
libata
scsi_mod
** PCI devices:
00:01.0 PCI bridge [0604]: Marvell Technology Group Ltd. Device [11ab:6282] (rev 01) (prog-if 00 [Normal decode])
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Prefetchable memory behind bridge: 00000000-000fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
00:02.0 PCI bridge [0604]: Marvell Technology Group Ltd. Device [11ab:6282] (rev 01) (prog-if 00 [Normal decode])
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
Memory behind bridge: e0000000-e00fffff
Prefetchable memory behind bridge: 00000000-000fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
02:00.0 USB controller [0c03]: Etron Technology, Inc. EJ168 USB 3.0 Host Controller [1b6f:7023] (rev 01) (prog-if 30 [XHCI])
Subsystem: Etron Technology, Inc. EJ168 USB 3.0 Host Controller [1b6f:7023]
Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 86
Region 0: Memory at e0000000 (64-bit, non-prefetchable) [size=32K]
Capabilities: <access denied>
** USB devices:
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
-- System Information:
Debian Release: 8.0
APT prefers stable
APT policy: (990, 'stable'), (500, 'stable-updates'), (500, 'unstable')
Architecture: armel (armv5tel)
Kernel: Linux 4.0.0-2-kirkwood
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages linux-image-4.0.0-2-kirkwood depends on:
ii debconf [debconf-2.0] 1.5.56
ii initramfs-tools [linux-initramfs-tool] 0.120
ii kmod 20-1
ii linux-base 3.5
Versions of packages linux-image-4.0.0-2-kirkwood recommends:
ii firmware-linux-free 3.3
ii uboot-mkimage 2012.04.01-2
-- debconf information excluded