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| author | Peter Zijlstra <[email protected]> | 2010-03-23 18:31:15 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2010-04-02 17:30:02 +0000 |
| commit | b38b24ead33417146e051453d04bf60b8d2d7e25 (patch) | |
| tree | 9f9801c5b10dd5a57b07deaace6fd12a36740d65 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | x86: Move notify_cpu_starting() callback to a later stage (diff) | |
| download | kernel-b38b24ead33417146e051453d04bf60b8d2d7e25.tar.gz kernel-b38b24ead33417146e051453d04bf60b8d2d7e25.zip | |
perf, x86: Fix AMD hotplug & constraint initialization
Commit 3f6da39 ("perf: Rework and fix the arch CPU-hotplug hooks") moved
the amd northbridge allocation from CPUS_ONLINE to CPUS_PREPARE_UP
however amd_nb_id() doesn't work yet on prepare so it would simply bail
basically reverting to a state where we do not properly track node wide
constraints - causing weird perf results.
Fix up the AMD NorthBridge initialization code by allocating from
CPU_UP_PREPARE and installing it from CPU_STARTING once we have the
proper nb_id. It also properly deals with the allocation failing.
Signed-off-by: Peter Zijlstra <[email protected]>
[ robustify using amd_has_nb() ]
Signed-off-by: Stephane Eranian <[email protected]>
LKML-Reference: <1269353485.5109.48.camel@twins>
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