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authorIngo Molnar <mingo@elte.hu>2009-06-06 09:58:57 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-06 11:37:22 +0200
commita21ca2cac582886a3e95c8bb84ff7c52d4d15e54 (patch)
treed110005d81e46b1afb3204fbaacc132d0ec946ee /kernel
parent2f335a02b3c816e77e7df1d15b12e3bbb8f4c8f0 (diff)
downloadop-kernel-dev-a21ca2cac582886a3e95c8bb84ff7c52d4d15e54.zip
op-kernel-dev-a21ca2cac582886a3e95c8bb84ff7c52d4d15e54.tar.gz
perf_counter: Separate out attr->type from attr->config
Counter type is a frequently used value and we do a lot of bit juggling by encoding and decoding it from attr->config. Clean this up by creating a separate attr->type field. Also clean up the various similarly complex user-space bits all around counter attribute management. The net improvement is significant, and it will be easier to add a new major type (which is what triggered this cleanup). (This changes the ABI, all tools are adapted.) (PowerPC build-tested.) Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/perf_counter.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index 47c92fb..75ae767 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -3091,14 +3091,12 @@ static int perf_swcounter_match(struct perf_counter *counter,
enum perf_event_types type,
u32 event, struct pt_regs *regs)
{
- u64 event_config;
-
- event_config = ((u64) type << PERF_COUNTER_TYPE_SHIFT) | event;
-
if (!perf_swcounter_is_counting(counter))
return 0;
- if (counter->attr.config != event_config)
+ if (counter->attr.type != type)
+ return 0;
+ if (counter->attr.config != event)
return 0;
if (regs) {
@@ -3403,7 +3401,7 @@ static const struct pmu *sw_perf_counter_init(struct perf_counter *counter)
* to be kernel events, and page faults are never hypervisor
* events.
*/
- switch (perf_event_id(&counter->attr)) {
+ switch (counter->attr.config) {
case PERF_COUNT_CPU_CLOCK:
pmu = &perf_ops_cpu_clock;
@@ -3496,12 +3494,12 @@ perf_counter_alloc(struct perf_counter_attr *attr,
if (attr->inherit && (attr->sample_type & PERF_SAMPLE_GROUP))
goto done;
- if (perf_event_raw(attr)) {
+ if (attr->type == PERF_TYPE_RAW) {
pmu = hw_perf_counter_init(counter);
goto done;
}
- switch (perf_event_type(attr)) {
+ switch (attr->type) {
case PERF_TYPE_HARDWARE:
pmu = hw_perf_counter_init(counter);
break;
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