perf tool: Move fill defaults into tool.c

The aim here is to eventually make perf_tool__fill_defaults() an init
function so that the tools struct is more const.

Create a tool.c to go along with tool.h. Move perf_tool__fill_defaults()
out of session.c into tool.c along with the default stub values. Add
perf_tool__compressed_is_stub() for a test in
perf_session__process_user_event().

perf_session__process_compressed_event() is only used from being default
initialized so migrate into tool.c.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Jonathan Cameron <jonathan.cameron@huawei.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nick Terrell <terrelln@fb.com>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Cc: Sun Haiyong <sunhaiyong@loongson.cn>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20240812204720.631678-5-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 1 insertions, 309 deletions

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 41beebd0913c..5c0e0341d39e 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -39,68 +39,6 @@
 #include "annotate.h"
 #include <internal/lib.h>
 
-#ifdef HAVE_ZSTD_SUPPORT
-static int perf_session__process_compressed_event(struct perf_session *session,
-						  union perf_event *event, u64 file_offset,
-						  const char *file_path)
-{
-	void *src;
-	size_t decomp_size, src_size;
-	u64 decomp_last_rem = 0;
-	size_t mmap_len, decomp_len = session->header.env.comp_mmap_len;
-	struct decomp *decomp, *decomp_last = session->active_decomp->decomp_last;
-
-	if (decomp_last) {
-		decomp_last_rem = decomp_last->size - decomp_last->head;
-		decomp_len += decomp_last_rem;
-	}
-
-	mmap_len = sizeof(struct decomp) + decomp_len;
-	decomp = mmap(NULL, mmap_len, PROT_READ|PROT_WRITE,
-		      MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
-	if (decomp == MAP_FAILED) {
-		pr_err("Couldn't allocate memory for decompression\n");
-		return -1;
-	}
-
-	decomp->file_pos = file_offset;
-	decomp->file_path = file_path;
-	decomp->mmap_len = mmap_len;
-	decomp->head = 0;
-
-	if (decomp_last_rem) {
-		memcpy(decomp->data, &(decomp_last->data[decomp_last->head]), decomp_last_rem);
-		decomp->size = decomp_last_rem;
-	}
-
-	src = (void *)event + sizeof(struct perf_record_compressed);
-	src_size = event->pack.header.size - sizeof(struct perf_record_compressed);
-
-	decomp_size = zstd_decompress_stream(session->active_decomp->zstd_decomp, src, src_size,
-				&(decomp->data[decomp_last_rem]), decomp_len - decomp_last_rem);
-	if (!decomp_size) {
-		munmap(decomp, mmap_len);
-		pr_err("Couldn't decompress data\n");
-		return -1;
-	}
-
-	decomp->size += decomp_size;
-
-	if (session->active_decomp->decomp == NULL)
-		session->active_decomp->decomp = decomp;
-	else
-		session->active_decomp->decomp_last->next = decomp;
-
-	session->active_decomp->decomp_last = decomp;
-
-	pr_debug("decomp (B): %zd to %zd\n", src_size, decomp_size);
-
-	return 0;
-}
-#else /* !HAVE_ZSTD_SUPPORT */
-#define perf_session__process_compressed_event perf_session__process_compressed_event_stub
-#endif
-
 static int perf_session__deliver_event(struct perf_session *session,
 				       union perf_event *event,
 				       const struct perf_tool *tool,
@@ -321,251 +259,6 @@ void perf_session__delete(struct perf_session *session)
 	free(session);
 }
 
-static int process_event_synth_tracing_data_stub(struct perf_session *session
-						 __maybe_unused,
-						 union perf_event *event
-						 __maybe_unused)
-{
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-static int process_event_synth_attr_stub(const struct perf_tool *tool __maybe_unused,
-					 union perf_event *event __maybe_unused,
-					 struct evlist **pevlist
-					 __maybe_unused)
-{
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-static int process_event_synth_event_update_stub(const struct perf_tool *tool __maybe_unused,
-						 union perf_event *event __maybe_unused,
-						 struct evlist **pevlist
-						 __maybe_unused)
-{
-	if (dump_trace)
-		perf_event__fprintf_event_update(event, stdout);
-
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-static int process_event_sample_stub(const struct perf_tool *tool __maybe_unused,
-				     union perf_event *event __maybe_unused,
-				     struct perf_sample *sample __maybe_unused,
-				     struct evsel *evsel __maybe_unused,
-				     struct machine *machine __maybe_unused)
-{
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-static int process_event_stub(const struct perf_tool *tool __maybe_unused,
-			      union perf_event *event __maybe_unused,
-			      struct perf_sample *sample __maybe_unused,
-			      struct machine *machine __maybe_unused)
-{
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-static int process_finished_round_stub(const struct perf_tool *tool __maybe_unused,
-				       union perf_event *event __maybe_unused,
-				       struct ordered_events *oe __maybe_unused)
-{
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-static int skipn(int fd, off_t n)
-{
-	char buf[4096];
-	ssize_t ret;
-
-	while (n > 0) {
-		ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
-		if (ret <= 0)
-			return ret;
-		n -= ret;
-	}
-
-	return 0;
-}
-
-static s64 process_event_auxtrace_stub(struct perf_session *session __maybe_unused,
-				       union perf_event *event)
-{
-	dump_printf(": unhandled!\n");
-	if (perf_data__is_pipe(session->data))
-		skipn(perf_data__fd(session->data), event->auxtrace.size);
-	return event->auxtrace.size;
-}
-
-static int process_event_op2_stub(struct perf_session *session __maybe_unused,
-				  union perf_event *event __maybe_unused)
-{
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-
-static
-int process_event_thread_map_stub(struct perf_session *session __maybe_unused,
-				  union perf_event *event __maybe_unused)
-{
-	if (dump_trace)
-		perf_event__fprintf_thread_map(event, stdout);
-
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-static
-int process_event_cpu_map_stub(struct perf_session *session __maybe_unused,
-			       union perf_event *event __maybe_unused)
-{
-	if (dump_trace)
-		perf_event__fprintf_cpu_map(event, stdout);
-
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-static
-int process_event_stat_config_stub(struct perf_session *session __maybe_unused,
-				   union perf_event *event __maybe_unused)
-{
-	if (dump_trace)
-		perf_event__fprintf_stat_config(event, stdout);
-
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-static int process_stat_stub(struct perf_session *perf_session __maybe_unused,
-			     union perf_event *event)
-{
-	if (dump_trace)
-		perf_event__fprintf_stat(event, stdout);
-
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-static int process_stat_round_stub(struct perf_session *perf_session __maybe_unused,
-				   union perf_event *event)
-{
-	if (dump_trace)
-		perf_event__fprintf_stat_round(event, stdout);
-
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-static int process_event_time_conv_stub(struct perf_session *perf_session __maybe_unused,
-					union perf_event *event)
-{
-	if (dump_trace)
-		perf_event__fprintf_time_conv(event, stdout);
-
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
-static int perf_session__process_compressed_event_stub(struct perf_session *session __maybe_unused,
-						       union perf_event *event __maybe_unused,
-						       u64 file_offset __maybe_unused,
-						       const char *file_path __maybe_unused)
-{
-       dump_printf(": unhandled!\n");
-       return 0;
-}
-
-void perf_tool__fill_defaults(struct perf_tool *tool)
-{
-	if (tool->sample == NULL)
-		tool->sample = process_event_sample_stub;
-	if (tool->mmap == NULL)
-		tool->mmap = process_event_stub;
-	if (tool->mmap2 == NULL)
-		tool->mmap2 = process_event_stub;
-	if (tool->comm == NULL)
-		tool->comm = process_event_stub;
-	if (tool->namespaces == NULL)
-		tool->namespaces = process_event_stub;
-	if (tool->cgroup == NULL)
-		tool->cgroup = process_event_stub;
-	if (tool->fork == NULL)
-		tool->fork = process_event_stub;
-	if (tool->exit == NULL)
-		tool->exit = process_event_stub;
-	if (tool->lost == NULL)
-		tool->lost = perf_event__process_lost;
-	if (tool->lost_samples == NULL)
-		tool->lost_samples = perf_event__process_lost_samples;
-	if (tool->aux == NULL)
-		tool->aux = perf_event__process_aux;
-	if (tool->itrace_start == NULL)
-		tool->itrace_start = perf_event__process_itrace_start;
-	if (tool->context_switch == NULL)
-		tool->context_switch = perf_event__process_switch;
-	if (tool->ksymbol == NULL)
-		tool->ksymbol = perf_event__process_ksymbol;
-	if (tool->bpf == NULL)
-		tool->bpf = perf_event__process_bpf;
-	if (tool->text_poke == NULL)
-		tool->text_poke = perf_event__process_text_poke;
-	if (tool->aux_output_hw_id == NULL)
-		tool->aux_output_hw_id = perf_event__process_aux_output_hw_id;
-	if (tool->read == NULL)
-		tool->read = process_event_sample_stub;
-	if (tool->throttle == NULL)
-		tool->throttle = process_event_stub;
-	if (tool->unthrottle == NULL)
-		tool->unthrottle = process_event_stub;
-	if (tool->attr == NULL)
-		tool->attr = process_event_synth_attr_stub;
-	if (tool->event_update == NULL)
-		tool->event_update = process_event_synth_event_update_stub;
-	if (tool->tracing_data == NULL)
-		tool->tracing_data = process_event_synth_tracing_data_stub;
-	if (tool->build_id == NULL)
-		tool->build_id = process_event_op2_stub;
-	if (tool->finished_round == NULL) {
-		if (tool->ordered_events)
-			tool->finished_round = perf_event__process_finished_round;
-		else
-			tool->finished_round = process_finished_round_stub;
-	}
-	if (tool->id_index == NULL)
-		tool->id_index = process_event_op2_stub;
-	if (tool->auxtrace_info == NULL)
-		tool->auxtrace_info = process_event_op2_stub;
-	if (tool->auxtrace == NULL)
-		tool->auxtrace = process_event_auxtrace_stub;
-	if (tool->auxtrace_error == NULL)
-		tool->auxtrace_error = process_event_op2_stub;
-	if (tool->thread_map == NULL)
-		tool->thread_map = process_event_thread_map_stub;
-	if (tool->cpu_map == NULL)
-		tool->cpu_map = process_event_cpu_map_stub;
-	if (tool->stat_config == NULL)
-		tool->stat_config = process_event_stat_config_stub;
-	if (tool->stat == NULL)
-		tool->stat = process_stat_stub;
-	if (tool->stat_round == NULL)
-		tool->stat_round = process_stat_round_stub;
-	if (tool->time_conv == NULL)
-		tool->time_conv = process_event_time_conv_stub;
-	if (tool->feature == NULL)
-		tool->feature = process_event_op2_stub;
-	if (tool->compressed == NULL)
-		tool->compressed = perf_session__process_compressed_event;
-	if (tool->finished_init == NULL)
-		tool->finished_init = process_event_op2_stub;
-}
-
 static void swap_sample_id_all(union perf_event *event, void *data)
 {
 	void *end = (void *) event + event->header.size;
@@ -1677,8 +1370,7 @@ static s64 perf_session__process_user_event(struct perf_session *session,
 	int fd = perf_data__fd(session->data);
 	int err;
 
-	if (event->header.type != PERF_RECORD_COMPRESSED ||
-	    tool->compressed == perf_session__process_compressed_event_stub)
+	if (event->header.type != PERF_RECORD_COMPRESSED || perf_tool__compressed_is_stub(tool))
 		dump_event(session->evlist, event, file_offset, &sample, file_path);
 
 	/* These events are processed right away */