perf cpumap: Give CPUs their own type

A common problem is confusing CPU map indices with the CPU, by wrapping
the CPU with a struct then this is avoided. This approach is similar to
atomic_t.

Committer notes:

To make it build with BUILD_BPF_SKEL=1 these files needed the
conversions to 'struct perf_cpu' usage:

  tools/perf/util/bpf_counter.c
  tools/perf/util/bpf_counter_cgroup.c
  tools/perf/util/bpf_ftrace.c

Also perf_env__get_cpu() was removed back in "perf cpumap: Switch
cpu_map__build_map to cpu function".

Additionally these needed to be fixed for the ARM builds to complete:

  tools/perf/arch/arm/util/cs-etm.c
  tools/perf/arch/arm64/util/pmu.c

Suggested-by: John Garry <[email protected]>
Signed-off-by: Ian Rogers <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Mathieu Poirier <[email protected]>
Cc: Mike Leach <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Clarke <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Riccardo Mancini <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Suzuki Poulouse <[email protected]>
Cc: Vineet Singh <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 3 insertions, 3 deletions

diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
index 0445bee9290f..bd95d60018a9 100644
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -1555,7 +1555,7 @@ static void get_handler_name(char *str, size_t size,
 }
 
 static void
-process_stat(struct evsel *counter, int cpu, int thread, u64 tstamp,
+process_stat(struct evsel *counter, struct perf_cpu cpu, int thread, u64 tstamp,
 	     struct perf_counts_values *count)
 {
 	PyObject *handler, *t;
@@ -1575,7 +1575,7 @@ process_stat(struct evsel *counter, int cpu, int thread, u64 tstamp,
 		return;
 	}
 
-	PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
+	PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu.cpu));
 	PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
 
 	tuple_set_u64(t, n++, tstamp);
@@ -1599,7 +1599,7 @@ static void python_process_stat(struct perf_stat_config *config,
 	int cpu, thread;
 
 	if (config->aggr_mode == AGGR_GLOBAL) {
-		process_stat(counter, -1, -1, tstamp,
+		process_stat(counter, (struct perf_cpu){ .cpu = -1 }, -1, tstamp,
 			     &counter->counts->aggr);
 		return;
 	}