Bug 1283832

Summary: when call local_irq_disable（）; to block local cpu from all hard irq, it goes wrong!
Product: Red Hat Enterprise MRG Reporter: lingfei <546755767>
Component: realtime-kernelAssignee: Red Hat Real Time Maintenance <rt-maint>
Status: CLOSED NOTABUG QA Contact: MRG Quality Engineering <mrgqe-bugs>
Severity: high Docs Contact:
Priority: unspecified    
Version: 3.1CC: bhu, lgoncalv, williams
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-11-20 15:05:55 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
3.10.0-229.rt56.161.el6rt.x86_64/include/asm-generic/irqflags.h none

Description lingfei 2015-11-20 04:08:50 UTC 
Created attachment 1096988 [details]
3.10.0-229.rt56.161.el6rt.x86_64/include/asm-generic/irqflags.h

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 15:05:55 UTC 
the include file linux/irqflags.h is for use by kernel code only.

Application programs cannot disable interrupts.