linux-kernel - CPU hotplug: smoke test

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Date:	Fri, 21 Jul 2006 02:59:03 +0200
From:	Pavel Machek <pavel@....cz>
To:	kernel list <linux-kernel@...r.kernel.org>
Subject: CPU hotplug: smoke test

Hi!

I tried running few instances of

while true; do echo 0 > /sys/devices/system/cpu/cpu1/online;   echo 1
> /sys/devices/system/cpu/cpu1/online; done

in paralel. It works okay, but, unfortunately, it provokes strange
failures while trying to build kernel from another console: 

  CHK     include/linux/version.h
  SYMLINK include/asm-arm/arch -> include/asm-arm/arch-pxa
make: Makefile:315: fork: Interrupted system call
1.88user 0.78system 11.20 (0m11.206s) elapsed 23.81%CPU
pavel@amd:/data/l/linux-z$

  CHK     include/linux/version.h
  SYMLINK include/asm-arm/arch -> include/asm-arm/arch-pxa
make: Makefile:315: fork: Interrupted system call
1.75user 0.72system 6.57 (0m6.578s) elapsed 37.64%CPU
pavel@amd:/data/l/linux-z$

  CC      fs/dnotify.o
make[1]: vfork: Interrupted system call
  CC      kernel/uid16.o
  CC      security/commoncap.o
  CC      ipc/shm.o
  CC      crypto/api.o
  CC      crypto/scatterwalk.o
  LD      security/built-in.o
  CC      kernel/kallsyms.o
  LD      ipc/built-in.o
make: Makefile:876: fork: Interrupted system call
40.89user 8.60system 102.10 (1m42.101s) elapsed 48.48%CPU
pavel@amd:/data/l/linux-z$   CC      crypto/cipher.o
  CC      crypto/digest.o

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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