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| author | Raghavendra K T <[email protected]> | 2013-10-21 16:05:08 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2013-10-26 10:23:22 +0000 |
| commit | 4c4e4f61368164f326fe59e2156c70d7faa72c17 (patch) | |
| tree | 3507a3abdf0622bb04503f07941b52d2088a3bd6 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | lockstat: Report avg wait and hold times (diff) | |
| download | kernel-4c4e4f61368164f326fe59e2156c70d7faa72c17.tar.gz kernel-4c4e4f61368164f326fe59e2156c70d7faa72c17.zip | |
x86/locking/kconfig: Update paravirt spinlock Kconfig description
Since the paravirt spinlock optimizations went into the v3.12 kernel
we have a very good performance benefit for paravirtualized KVM / Xen
kernels. Also we no longer suffer from 5% side effect on native
kernel that is mentioned in the Kconfig entry.
So update the Kconfig entry accordingly.
pvspinlock benefit on KVM link:
https://lkml.org/lkml/2013/8/6/178
Attilio's tests on native kernel impact:
http://blog.xen.org/index.php/2012/05/11/benchmarking-the-new-pv-ticketlock-implementation/
Signed-off-by: Raghavendra K T <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/1382371508-3843-1-git-send-email-raghavendra.kt@linux.vnet.ibm.com
[ Updated the changelog. ]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions