perf: Rework and fix the arch CPU-hotplug hooks

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Remove the hw_perf_event_*() hotplug hooks in favour of per PMU hotplug
notifiers. This has the advantage of reducing the static weak interface
as well as exposing all hotplug actions to the PMU.

Use this to fix x86 hotplug usage where we did things in ONLINE which
should have been done in UP_PREPARE or STARTING.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: paulus@samba.org
Cc: eranian@google.com
Cc: robert.richter@amd.com
Cc: fweisbec@gmail.com
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
LKML-Reference: <20100305154128.736225361@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Peter Zijlstra 2010-03-05 13:01:18 +01:00 • committed by Ingo Molnar

parent dc1d628a67

commit 3f6da39053

7 changed files with 126 additions and 81 deletions

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21

arch/powerpc/kernel/perf_event.c

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20

arch/sh/kernel/perf_event.c

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70

arch/x86/kernel/cpu/perf_event.c

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60

arch/x86/kernel/cpu/perf_event_amd.c

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arch/x86/kernel/cpu/perf_event_intel.c

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include/linux/perf_event.h

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15

kernel/perf_event.c

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