Bug 1283836 - when call local_irq_disable(); to block local cpu from all hard irq, it goes wrong!
when call local_irq_disable(); to block local cpu from all hard irq, it goes ...
Status: CLOSED NOTABUG
Product: Red Hat Enterprise MRG
Classification: Red Hat
Component: realtime-kernel (Show other bugs)
3.1
x86_64 Linux
unspecified Severity high
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Assigned To: Red Hat Real Time Maintenance
MRG Quality Engineering
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Reported: 2015-11-19 23:26 EST by lingfei
Modified: 2015-11-20 10:05 EST (History)
3 users (show)

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Last Closed: 2015-11-20 10:05:15 EST
Type: Bug
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Description lingfei 2015-11-19 23:26:25 EST
Description of problem:


Version-Release number of selected component (if applicable):
Kernel version :Redhat-6.7 3.10.0-229.rt56.161.el6rt.x86_64 

How reproducible:

Programme a realtime programa,to shield a specific CPU from handling IRQs



Steps to Reproduce:
1.#include<linux/irqflags.h>
2.the main() funtion calls some thread functions.  
2.call local_irq_disable(); in a thread function.
3.compile it with icc;

Actual results:
3.10.0-229.rt56.161.el6rt.x86_64/include/asm-generic/irqflags.h:46: undefined reference to `arch_local_irq_restore

Expected results:
with no error; 

Additional info:
It seems I just find the function declared but definited in the  include/asm-generic/irqflags.h
Comment 1 Clark Williams 2015-11-20 10:05:15 EST
The header file linux/irqflags.h is for use by kernel code only. 

Application programs cannot disable interrupts.

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