Davidlohr Bueso 60758d6668 perf bench futex: Sanitize numeric parameters ...

This gets rid of oddities such as:

  perf bench futex hash -t -4
  perf: calloc: Cannot allocate memory

Runtime (and many more) are equally busted, i.e. run for bogus amounts of
time. Just use the abs, instead of, for example errorring out.

Committer note:

After the patch:

  $ perf bench futex hash -t -4
  # Running 'futex/hash' benchmark:
  Run summary [PID 10178]: 4 threads, each operating on 1024 [private] futexes for 10 secs.

  [thread  0] futexes: 0x34f9fa0 ... 0x34faf9c [ 4702208 ops/sec ]
  [thread  1] futexes: 0x34fb140 ... 0x34fc13c [ 4707020 ops/sec ]
  [thread  2] futexes: 0x34fc2e0 ... 0x34fd2dc [ 4711526 ops/sec ]
  [thread  3] futexes: 0x34fd480 ... 0x34fe47c [ 4709683 ops/sec ]

  Averaged 4707609 operations/sec (+- 0.04%), total secs = 10
  $

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1477342613-9938-3-git-send-email-dave@stgolabs.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2016-10-25 09:50:53 -03:00

..

accounting

tools: move accounting tool from Documentation

2016-09-23 13:07:15 -06:00

arch

tools: Synchronize tools/arch/x86/include/asm/cpufeatures.h

2016-10-05 19:18:34 -03:00

build

tools build: Add feature detection for g++

2016-10-05 19:59:35 -03:00

cgroup

…

firewire

…

gpio

tools/gpio: fix gpio-event-mon header comment

2016-08-08 09:50:22 +02:00

hv

Drivers: hv: utils: Check VSS daemon is listening before a hot backup

2016-09-02 17:22:51 +02:00

iio

Second set of iio new device support, features and cleanups for the 4.9 cycle.

2016-09-14 20:42:03 +02:00

include

tools lib: Add for_each_clear_bit macro

2016-10-24 11:07:33 -03:00

kvm/kvm_stat

tools: kvm_stat: Add comments

2016-05-25 16:12:06 +02:00

laptop

tools: move laptops dslm tool from Documentation

2016-09-23 13:07:21 -06:00

lguest

tools/lguest: Don't bork the terminal in case of wrong args

2016-09-08 08:05:24 +02:00

lib

tools lib: Add for_each_clear_bit macro

2016-10-24 11:07:33 -03:00

net

tools: bpf_jit_disasm: check for klogctl failure

2016-05-08 23:32:59 -04:00

nfsd

…

objtool

objtool: Skip all "unreachable instruction" warnings for gcov kernels

2016-10-16 09:12:36 +02:00

pcmcia

tools: move pcmcia crc32hash tool from Documentation

2016-09-23 13:07:27 -06:00

perf

perf bench futex: Sanitize numeric parameters

2016-10-25 09:50:53 -03:00

power

ACPICA: Cleanup for all string-to-integer conversions

2016-09-10 02:37:59 +02:00

scripts

tools build: Fix objtool build with ARCH=x86_64

2016-07-22 16:37:44 -03:00

spi

Merge remote-tracking branches 'spi/topic/ti-qspi', 'spi/topic/tools', 'spi/topic/txx9' and 'spi/topic/xlp' into spi-next

2016-09-30 09:14:22 -07:00

testing

linux-kselftest-4.9-rc1-update

2016-10-14 15:17:12 -07:00

thermal/tmon

…

time

…

usb

usbip: adding names db to port operation

2016-05-03 14:32:07 -07:00

virtio

tools/virtio: add dma stubs

2016-08-15 05:05:51 +03:00

vm

tools/vm/page_owner: increase temporary buffer size

2016-07-26 16:19:19 -07:00

Makefile

tools/gpio: add install section

2016-06-23 11:07:13 +02:00