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* [Bug kprobes/2668] New: bugfix of kprobe-booster: reenable kprobe-booster on i386
@ 2006-05-16 21:35 soshima at redhat dot com
  2006-05-16 21:37 ` [Bug kprobes/2668] " soshima at redhat dot com
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: soshima at redhat dot com @ 2006-05-16 21:35 UTC (permalink / raw)
  To: systemtap

I found another bug in kprobes i386.

kprobe-booster is disabled in current mainline.

Boostability has been disabled since removing #ifdef CONFIG_PREMPT.

This is our fault to have overlooked this issue in review.

-- 
           Summary: bugfix of kprobe-booster: reenable kprobe-booster on
                    i386
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: enhancement
          Priority: P3
         Component: kprobes
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: soshima at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=2668

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* [Bug kprobes/2668] bugfix of kprobe-booster: reenable kprobe-booster on i386
  2006-05-16 21:35 [Bug kprobes/2668] New: bugfix of kprobe-booster: reenable kprobe-booster on i386 soshima at redhat dot com
@ 2006-05-16 21:37 ` soshima at redhat dot com
  2006-05-17  1:54 ` bibo dot mao at intel dot com
                   ` (2 subsequent siblings)
  3 siblings, 0 replies; 5+ messages in thread
From: soshima at redhat dot com @ 2006-05-16 21:37 UTC (permalink / raw)
  To: systemtap


------- Additional Comments From soshima at redhat dot com  2006-05-16 21:37 -------
Created an attachment (id=1030)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=1030&action=view)
re-enable kprobe-booster

This patch re-enable kprobe-booster and is against 2.6.17-rc3-mm1.

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=2668

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* [Bug kprobes/2668] bugfix of kprobe-booster: reenable kprobe-booster on i386
  2006-05-16 21:35 [Bug kprobes/2668] New: bugfix of kprobe-booster: reenable kprobe-booster on i386 soshima at redhat dot com
  2006-05-16 21:37 ` [Bug kprobes/2668] " soshima at redhat dot com
@ 2006-05-17  1:54 ` bibo dot mao at intel dot com
  2006-05-17  2:56 ` bibo dot mao at intel dot com
  2006-06-15 16:08 ` soshima at redhat dot com
  3 siblings, 0 replies; 5+ messages in thread
From: bibo dot mao at intel dot com @ 2006-05-17  1:54 UTC (permalink / raw)
  To: systemtap


------- Additional Comments From bibo dot mao at intel dot com  2006-05-17 01:54 -------
In file include/asm-i386/thread_info.h, default value of preempt_count is 1. if 
CONFIG_PREEMPT is not set,I do not know whether its value will be changed in 
other places.

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=2668

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^ permalink raw reply	[flat|nested] 5+ messages in thread

* [Bug kprobes/2668] bugfix of kprobe-booster: reenable kprobe-booster on i386
  2006-05-16 21:35 [Bug kprobes/2668] New: bugfix of kprobe-booster: reenable kprobe-booster on i386 soshima at redhat dot com
  2006-05-16 21:37 ` [Bug kprobes/2668] " soshima at redhat dot com
  2006-05-17  1:54 ` bibo dot mao at intel dot com
@ 2006-05-17  2:56 ` bibo dot mao at intel dot com
  2006-06-15 16:08 ` soshima at redhat dot com
  3 siblings, 0 replies; 5+ messages in thread
From: bibo dot mao at intel dot com @ 2006-05-17  2:56 UTC (permalink / raw)
  To: systemtap


------- Additional Comments From bibo dot mao at intel dot com  2006-05-17 02:56 -------
Sorry I am wrong :(. By the test it is found that preempt_count is cleared to 0 
somewhere. At least in function init_idle() it is set to zero. So your patch is 
right for me.

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=2668

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* [Bug kprobes/2668] bugfix of kprobe-booster: reenable kprobe-booster on i386
  2006-05-16 21:35 [Bug kprobes/2668] New: bugfix of kprobe-booster: reenable kprobe-booster on i386 soshima at redhat dot com
                   ` (2 preceding siblings ...)
  2006-05-17  2:56 ` bibo dot mao at intel dot com
@ 2006-06-15 16:08 ` soshima at redhat dot com
  3 siblings, 0 replies; 5+ messages in thread
From: soshima at redhat dot com @ 2006-06-15 16:08 UTC (permalink / raw)
  To: systemtap


------- Additional Comments From soshima at redhat dot com  2006-06-15 16:07 -------
This bug is fixed in 2.6.17-rc4-mm2. 

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://sourceware.org/bugzilla/show_bug.cgi?id=2668

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end of thread, other threads:[~2006-06-15 16:08 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2006-05-16 21:35 [Bug kprobes/2668] New: bugfix of kprobe-booster: reenable kprobe-booster on i386 soshima at redhat dot com
2006-05-16 21:37 ` [Bug kprobes/2668] " soshima at redhat dot com
2006-05-17  1:54 ` bibo dot mao at intel dot com
2006-05-17  2:56 ` bibo dot mao at intel dot com
2006-06-15 16:08 ` soshima at redhat dot com

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