lkml.org 
[lkml]   [2000]   [Jan]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: 2.3.40 blows away on shm swap test
Date
From: "Christoph Rohland" <hans-christoph.rohland@sap.com>
> Code; c0114d64 <flush_tlb_all_ipi+18/58> <=====
> 0: 8b 52 0c movl 0xc(%edx),%edx <=====
> Code; c0114d67 <flush_tlb_all_ipi+1b/58>
> 3: 81 c2 00 00 00 40 addl $0x40000000,%edx

That's Ingo's new __flush_tlb_all() optimization:
he tries to avoid loading from %%cr3 by loading the information from
current->active_mm->pgd.

Ingo, could you undo that change?
current->active_mm may be NULL in the middle of a task switch [between
mmdrop() and switch_to() in schedule()]

--
Manfred


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:56    [W:0.107 / U:0.120 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site