> Depending on system speed, the large lookup/insert/delete loops of the
> testsuite can
> take a considerable amount of time to complete causing watchdog warnings to
> appear.
> Allow other tasks to be scheduled throughout the loops.
>
> Reported-by: Meelis Roos
> Signed-off-by: Thomas Graf
> ---
> v2: Use cond_resched() instead schedule()
Tested it. The warning is gone from rhashtable test but now it is
present in rbtree test (it was not there before). Same kernel, just your
patch applied - but it should not change rbtree test???
[0.00] PROMLIB: Sun IEEE Boot Prom 'OBP 3.31.0 2001/07/25 20:36'
[0.00] PROMLIB: Root node compatible:
[0.00] Linux version 4.2.0-rc2-00077-gf760b87-dirty (mroos@u5) (gcc
version 4.9.3 (Debian 4.9.3-1) ) #21 Fri Jul 17 20:15:21 EEST 2015
[0.00] bootconsole [earlyprom0] enabled
[0.00] ARCH: SUN4U
[0.00] Ethernet address: 08:00:20:f8:c7:72
[0.00] MM: PAGE_OFFSET is 0xf800 (max_phys_bits == 40)
[0.00] MM: VMALLOC [0x0001 --> 0x0600]
[0.00] MM: VMEMMAP [0x0600 --> 0x0c00]
[0.00] Kernel: Using 10 locked TLB entries for main kernel image.
[0.00] Remapping the kernel... done.
[0.00] kmemleak: Kernel memory leak detector disabled
[0.00] OF stdout device is: /pci@1f,0/pci@1,1/ebus@1/se@14,40:a
[0.00] PROM: Built device tree with 70266 bytes of memory.
[0.00] Top of RAM: 0x1ff2c000, Total RAM: 0x1ff2a000
[0.00] Memory hole size: 0MB
[0.00] Allocated 16384 bytes for kernel page tables.
[0.00] Zone ranges:
[0.00] Normal [mem 0x-0x1ff2bfff]
[0.00] Movable zone start for each node
[0.00] Early memory node ranges
[0.00] node 0: [mem 0x-0x1fefdfff]
[0.00] node 0: [mem 0x1ff0-0x1ff2bfff]
[0.00] Initmem setup node 0 [mem 0x-0x1ff2bfff]
[0.00] On node 0 totalpages: 65429
[0.00] Normal zone: 512 pages used for memmap
[0.00] Normal zone: 0 pages reserved
[0.00] Normal zone: 65429 pages, LIFO batch:15
[0.00] Booting Linux...
[0.00] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
[0.00] CPU CAPS: [vis]
[0.00] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[0.00] pcpu-alloc: [0] 0
[0.00] Built 1 zonelists in Zone order, mobility grouping on. Total
pages: 64917
[0.00] Kernel command line: root=/dev/sda1 ro
[0.00] PID hash table entries: 2048 (order: 1, 16384 bytes)
[0.00] Dentry cache hash table entries: 65536 (order: 6, 524288 bytes)
[0.00] Inode-cache hash table entries: 32768 (order: 5, 262144 bytes)
[0.00] Sorting __ex_table...
[0.00] Memory: 475912K/523432K available (5270K kernel code, 516K
rwdata, 1672K rodata, 520K init, 30210K bss, 47520K reserved, 0K cma-reserved)
[0.00] Running RCU self tests
[0.00] Testing tracer nop: PASSED
[0.00] NR_IRQS:2048 nr_irqs:2048 1
[ 26.882478] clocksource: tick: mask: 0x max_cycles:
0x5306eb473f, max_idle_ns: 440795213232 ns
[ 26.986192] clocksource: mult[2c71c72] shift[24]
[ 27.025729] clockevent: mult[5c28f5c3] shift[32]
[ 27.067997] Console: colour dummy device 80x25
[ 27.104149] console [tty0] enabled
[ 27.128868] bootconsole [earlyprom0] disabled
[ 27.165340] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc.,
Ingo Molnar
[ 27.165405] ... MAX_LOCKDEP_SUBCLASSES: 8
[ 27.165445] ... MAX_LOCK_DEPTH: 48
[ 27.165486] ... MAX_LOCKDEP_KEYS:8191
[ 27.165529] ... CLASSHASH_SIZE: 4096
[ 27.165574] ... MAX_LOCKDEP_ENTRIES: 32768
[ 27.165617] ... MAX_LOCKDEP_CHAINS: 65536
[ 27.165662] ... CHAINHASH_SIZE: 32768
[ 27.165706] memory used by lock dependency info: 8159 kB
[ 27.165756] per task-struct memory footprint: 1920 bytes
[ 27.165802]
[ 27.165838] | Locking API testsuite:
[ 27.165873]
[ 27.165932] | spin |wlock |rlock |mutex |
wsem | rsem |
[ 27.165993]
--
[ 27.166092] A-A deadlock: ok | ok | ok | ok |
ok | ok |
[ 27.232682] A-B-B-A deadlock: ok | ok | ok | ok |
ok | ok |
[ 27.299789] A-B-B-C-C-A deadlock: ok | ok | ok | ok |
ok | ok |
[ 27.367295] A-B-C-A-B-C deadlock: ok | ok | ok | ok |
ok | ok |
[ 27.434877] A-B-B-C-C-D-D-A deadlock: ok | ok | ok | ok |
ok | ok |
[ 27.502857] A-B-C-D-B-D-D-A deadlock: ok | ok | ok | ok |
ok | ok |
[ 27.5709