Skip to main content

Browse the archive

https://github.com/torvalds/linux
23 October 2021, 00:29:24 UTC
Revision 1ea5a6afd95a4803900c97ed63a47a883ebe7b3e authored by Cyrill Gorcunov on 21 April 2011, 15:03:21 UTC, committed by Ingo Molnar on 22 April 2011, 08:21:34 UTC 
perf, x86: P4 PMU - Don't forget to clear cpuc->active_mask on overflow
 
It's not enough to simply disable event on overflow the
cpuc->active_mask should be cleared as well otherwise counter
may stall in "active" even in real being already disabled (which
potentially may lead to the situation that user may not use this
counter further).

Don pointed out that:

 " I also noticed this patch fixed some unknown NMIs
   on a P4 when I stressed the box".

Tested-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Link: http://lkml.kernel.org/r/1303398203-2918-3-git-send-email-dzickus@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
1 parent b52c55c
History
Tip revision: 1ea5a6afd95a4803900c97ed63a47a883ebe7b3e authored by Cyrill Gorcunov on 21 April 2011, 15:03:21 UTC
perf, x86: P4 PMU - Don't forget to clear cpuc->active_mask on overflow
Tip revision: 1ea5a6a
File Mode Size
Documentation
arch
block
crypto
drivers
firmware
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.gitignore -rw-r--r-- 941 bytes
.mailmap -rw-r--r-- 4.1 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 91.7 KB
Kbuild -rw-r--r-- 2.4 KB
Kconfig -rw-r--r-- 252 bytes
MAINTAINERS -rw-r--r-- 188.3 KB
Makefile -rw-r--r-- 51.1 KB
README -rw-r--r-- 17.1 KB
REPORTING-BUGS -rw-r--r-- 3.3 KB

README

back to top