From: Xie XiuQi <xiexiuqi@huawei.com>
Date: Fri, 29 Mar 2013 01:43:47 +0000 (+0800)
Subject: Fix example error_injection_tool
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~144^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=83d435dd6e24b17955f91480f633bb39f0a7c2b4;p=pandora-kernel.git

Fix example error_injection_tool

I got a "sched_setaffinity:: Invalid argument" error when using
err_injection_tool to inject error on a system with over 32 cpus.

Error information when injecting an error on a system with over 32 cpus:
$ ./err_injection_tool -i
/sys/devices/system/cpu/cpu0/err_inject//err_type_info
Begine at Tue Mar 26 11:20:08 2013
Configurations:
On cpu32: loop=10, interval=5(s) err_type_info=4101,err_struct_info=95
Error sched_setaffinity:: Invalid argument
All done

This because there is overflow when calculating the cpumask: the
type of (1<<k) is int, while mask[j] is unsigned long. When k > 31,
(1<<k) is truncated to ZERO, resulting in a unexpected cpumask.

Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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