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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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.. | ||
.gitignore | ||
aliasing-test.c | ||
aliasing.txt | ||
efirtc.txt | ||
err_inject.txt | ||
fsys.txt | ||
IRQ-redir.txt | ||
kvm.txt | ||
Makefile | ||
mca.txt | ||
paravirt_ops.txt | ||
README | ||
serial.txt | ||
xen.txt |
Linux kernel release 2.4.xx for the IA-64 Platform These are the release notes for Linux version 2.4 for IA-64 platform. This document provides information specific to IA-64 ONLY, to get additional information about the Linux kernel also read the original Linux README provided with the kernel. INSTALLING the kernel: - IA-64 kernel installation is the same as the other platforms, see original README for details. SOFTWARE REQUIREMENTS Compiling and running this kernel requires an IA-64 compliant GCC compiler. And various software packages also compiled with an IA-64 compliant GCC compiler. CONFIGURING the kernel: Configuration is the same, see original README for details. COMPILING the kernel: - Compiling this kernel doesn't differ from other platform so read the original README for details BUT make sure you have an IA-64 compliant GCC compiler. IA-64 SPECIFICS - General issues: o Hardly any performance tuning has been done. Obvious targets include the library routines (IP checksum, etc.). Less obvious targets include making sure we don't flush the TLB needlessly, etc. o SMP locks cleanup/optimization o IA32 support. Currently experimental. It mostly works.