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perf: Reduce perf_disable() usage

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Since the current perf_disable() usage is only an optimization,
remove it for now. This eases the removal of the __weak
hw_perf_enable() interface.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: paulus <paulus@samba.org>
Cc: stephane eranian <eranian@googlemail.com>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Lin Ming <ming.m.lin@intel.com>
Cc: Yanmin <yanmin_zhang@linux.intel.com>
Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
Cc: David Miller <davem@davemloft.net>
Cc: Michael Cree <mcree@orcon.net.nz>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2010-06-11 17:32:03 +02:00
committed by Ingo Molnar
parent 9ed6060d28
commit 24cd7f54a0
8 changed files with 48 additions and 59 deletions
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20
include/linux/perf_event.h
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@ -564,26 +564,26 @@ struct pmu {
struct list_head entry;
/*
* Should return -ENOENT when the @event doesn't match this pmu
* Should return -ENOENT when the @event doesn't match this PMU.
*/
int (*event_init) (struct perf_event *event);
int (*enable) (struct perf_event *event);
int (*enable) (struct perf_event *event);
void (*disable) (struct perf_event *event);
int (*start) (struct perf_event *event);
int (*start) (struct perf_event *event);
void (*stop) (struct perf_event *event);
void (*read) (struct perf_event *event);
void (*unthrottle) (struct perf_event *event);
/*
* Group events scheduling is treated as a transaction, add group
* events as a whole and perform one schedulability test. If the test
* fails, roll back the whole group
* Group events scheduling is treated as a transaction, add
* group events as a whole and perform one schedulability test.
* If the test fails, roll back the whole group
*/
/*
* Start the transaction, after this ->enable() doesn't need
* to do schedulability tests.
* Start the transaction, after this ->enable() doesn't need to
* do schedulability tests.
*/
void (*start_txn) (struct pmu *pmu);
/*
@ -594,8 +594,8 @@ struct pmu {
*/
int (*commit_txn) (struct pmu *pmu);
/*
* Will cancel the transaction, assumes ->disable() is called for
* each successfull ->enable() during the transaction.
* Will cancel the transaction, assumes ->disable() is called
* for each successfull ->enable() during the transaction.
*/
void (*cancel_txn) (struct pmu *pmu);
};