leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

perf_counter: Fix tracepoint sampling to be part of generic sampling

Browse Source 
Based on Peter's comments, make tracepoint sampling generic
just like all the other sampling bits are. This is a rename
with no code changes:

- PERF_SAMPLE_TP_RECORD to PERF_SAMPLE_RAW
- struct perf_tracepoint_record to perf_raw_record

We want the system in place that transport tracepoints raw
samples events into the perf ring buffer to be generalized and
usable by any type of counter.

Reported-by; Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1249698400-5441-4-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Frederic Weisbecker 2009-08-08 04:26:37 +02:00 committed by Ingo Molnar
parent 10b8e30660
commit 3a43ce68ae
2 changed files with 15 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
include/linux/perf_counter.h
View File

@ -121,7 +121,7 @@ enum perf_counter_sample_format {
PERF_SAMPLE_CPU = 1U << 7,
PERF_SAMPLE_PERIOD = 1U << 8,
PERF_SAMPLE_STREAM_ID = 1U << 9,
PERF_SAMPLE_TP_RECORD = 1U << 10,
PERF_SAMPLE_RAW = 1U << 10,
PERF_SAMPLE_MAX = 1U << 11, /* non-ABI */
};
@ -414,9 +414,9 @@ struct perf_callchain_entry {
__u64 ip[PERF_MAX_STACK_DEPTH];
};
struct perf_tracepoint_record {
int size;
char *record;
struct perf_raw_record {
u32 size;
void *data;
};
struct task_struct;
@ -687,7 +687,7 @@ struct perf_sample_data {
struct pt_regs *regs;
u64 addr;
u64 period;
void *private;
struct perf_raw_record *raw;
};
extern int perf_counter_overflow(struct perf_counter *counter, int nmi,

20
kernel/perf_counter.c
View File

@ -2646,7 +2646,7 @@ static void perf_counter_output(struct perf_counter *counter, int nmi,
u64 counter;
} group_entry;
struct perf_callchain_entry *callchain = NULL;
struct perf_tracepoint_record *tp = NULL;
struct perf_raw_record *raw = NULL;
int callchain_size = 0;
u64 time;
struct {
@ -2715,10 +2715,10 @@ static void perf_counter_output(struct perf_counter *counter, int nmi,
header.size += sizeof(u64);
}
if (sample_type & PERF_SAMPLE_TP_RECORD) {
tp = data->private;
if (tp)
header.size += tp->size;
if (sample_type & PERF_SAMPLE_RAW) {
raw = data->raw;
if (raw)
header.size += raw->size;
}
ret = perf_output_begin(&handle, counter, header.size, nmi, 1);
@ -2784,8 +2784,8 @@ static void perf_counter_output(struct perf_counter *counter, int nmi,
}
}
if ((sample_type & PERF_SAMPLE_TP_RECORD) && tp)
perf_output_copy(&handle, tp->record, tp->size);
if ((sample_type & PERF_SAMPLE_RAW) && raw)
perf_output_copy(&handle, raw->data, raw->size);
perf_output_end(&handle);
}
@ -3740,15 +3740,15 @@ static const struct pmu perf_ops_task_clock = {
void perf_tpcounter_event(int event_id, u64 addr, u64 count, void *record,
int entry_size)
{
struct perf_tracepoint_record tp = {
struct perf_raw_record raw = {
.size = entry_size,
.record = record,
.data = record,
};
struct perf_sample_data data = {
.regs = get_irq_regs(),
.addr = addr,
.private = &tp,
.raw = &raw,
};
if (!data.regs)