add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/perf/builtin-lock.c
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@@ -4,14 +4,13 @@
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 #include "builtin.h"
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 #include "perf.h"
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-#include "util/evlist.h"
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+#include "util/evlist.h" // for struct evsel_str_handler
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 #include "util/evsel.h"
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-#include "util/util.h"
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-#include "util/cache.h"
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 #include "util/symbol.h"
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 #include "util/thread.h"
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 #include "util/header.h"
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+#include <subcmd/pager.h>
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 #include <subcmd/parse-options.h>
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 #include "util/trace-event.h"
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..
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@@ -30,6 +29,8 @@
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 #include <linux/list.h>
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 #include <linux/hash.h>
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 #include <linux/kernel.h>
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+#include <linux/zalloc.h>
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+#include <linux/err.h>
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 static struct perf_session *session;
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@@ -47,7 +48,7 @@
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 	struct rb_node		rb;		/* used for sorting */
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 	/*
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-	 * FIXME: perf_evsel__intval() returns u64,
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+	 * FIXME: evsel__intval() returns u64,
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 	 * so address of lockdep_map should be dealed as 64bit.
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 	 * Is there more better solution?
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 	 */
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@@ -347,16 +348,16 @@
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 }
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 struct trace_lock_handler {
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-	int (*acquire_event)(struct perf_evsel *evsel,
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+	int (*acquire_event)(struct evsel *evsel,
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 			     struct perf_sample *sample);
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-	int (*acquired_event)(struct perf_evsel *evsel,
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+	int (*acquired_event)(struct evsel *evsel,
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 			      struct perf_sample *sample);
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-	int (*contended_event)(struct perf_evsel *evsel,
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+	int (*contended_event)(struct evsel *evsel,
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 			       struct perf_sample *sample);
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-	int (*release_event)(struct perf_evsel *evsel,
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+	int (*release_event)(struct evsel *evsel,
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 			     struct perf_sample *sample);
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 };
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@@ -396,16 +397,16 @@
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 	READ_LOCK = 2,
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 };
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-static int report_lock_acquire_event(struct perf_evsel *evsel,
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+static int report_lock_acquire_event(struct evsel *evsel,
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 				     struct perf_sample *sample)
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 {
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 	void *addr;
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 	struct lock_stat *ls;
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 	struct thread_stat *ts;
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 	struct lock_seq_stat *seq;
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-	const char *name = perf_evsel__strval(evsel, sample, "name");
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-	u64 tmp = perf_evsel__intval(evsel, sample, "lockdep_addr");
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-	int flag = perf_evsel__intval(evsel, sample, "flag");
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+	const char *name = evsel__strval(evsel, sample, "name");
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+	u64 tmp	 = evsel__intval(evsel, sample, "lockdep_addr");
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+	int flag = evsel__intval(evsel, sample, "flags");
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 	memcpy(&addr, &tmp, sizeof(void *));
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@@ -454,7 +455,7 @@
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 		/* broken lock sequence, discard it */
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 		ls->discard = 1;
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 		bad_hist[BROKEN_ACQUIRE]++;
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-		list_del(&seq->list);
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+		list_del_init(&seq->list);
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 		free(seq);
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 		goto end;
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 	default:
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@@ -468,7 +469,7 @@
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 	return 0;
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 }
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-static int report_lock_acquired_event(struct perf_evsel *evsel,
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+static int report_lock_acquired_event(struct evsel *evsel,
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 				      struct perf_sample *sample)
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 {
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 	void *addr;
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@@ -476,8 +477,8 @@
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 	struct thread_stat *ts;
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 	struct lock_seq_stat *seq;
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 	u64 contended_term;
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-	const char *name = perf_evsel__strval(evsel, sample, "name");
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-	u64 tmp = perf_evsel__intval(evsel, sample, "lockdep_addr");
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+	const char *name = evsel__strval(evsel, sample, "name");
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+	u64 tmp = evsel__intval(evsel, sample, "lockdep_addr");
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 	memcpy(&addr, &tmp, sizeof(void *));
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@@ -515,7 +516,7 @@
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 		/* broken lock sequence, discard it */
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 		ls->discard = 1;
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 		bad_hist[BROKEN_ACQUIRED]++;
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-		list_del(&seq->list);
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+		list_del_init(&seq->list);
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 		free(seq);
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 		goto end;
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 	default:
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@@ -531,15 +532,15 @@
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 	return 0;
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 }
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-static int report_lock_contended_event(struct perf_evsel *evsel,
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+static int report_lock_contended_event(struct evsel *evsel,
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 				       struct perf_sample *sample)
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 {
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 	void *addr;
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 	struct lock_stat *ls;
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 	struct thread_stat *ts;
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 	struct lock_seq_stat *seq;
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-	const char *name = perf_evsel__strval(evsel, sample, "name");
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-	u64 tmp = perf_evsel__intval(evsel, sample, "lockdep_addr");
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+	const char *name = evsel__strval(evsel, sample, "name");
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+	u64 tmp = evsel__intval(evsel, sample, "lockdep_addr");
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 	memcpy(&addr, &tmp, sizeof(void *));
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@@ -570,7 +571,7 @@
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 		/* broken lock sequence, discard it */
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 		ls->discard = 1;
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 		bad_hist[BROKEN_CONTENDED]++;
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-		list_del(&seq->list);
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+		list_del_init(&seq->list);
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 		free(seq);
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 		goto end;
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 	default:
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@@ -586,15 +587,15 @@
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 	return 0;
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 }
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-static int report_lock_release_event(struct perf_evsel *evsel,
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+static int report_lock_release_event(struct evsel *evsel,
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 				     struct perf_sample *sample)
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 {
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 	void *addr;
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 	struct lock_stat *ls;
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 	struct thread_stat *ts;
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 	struct lock_seq_stat *seq;
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-	const char *name = perf_evsel__strval(evsel, sample, "name");
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-	u64 tmp = perf_evsel__intval(evsel, sample, "lockdep_addr");
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+	const char *name = evsel__strval(evsel, sample, "name");
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+	u64 tmp = evsel__intval(evsel, sample, "lockdep_addr");
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 	memcpy(&addr, &tmp, sizeof(void *));
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@@ -639,7 +640,7 @@
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 	ls->nr_release++;
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 free_seq:
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-	list_del(&seq->list);
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+	list_del_init(&seq->list);
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 	free(seq);
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 end:
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 	return 0;
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@@ -656,32 +657,28 @@
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 static struct trace_lock_handler *trace_handler;
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-static int perf_evsel__process_lock_acquire(struct perf_evsel *evsel,
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-					     struct perf_sample *sample)
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+static int evsel__process_lock_acquire(struct evsel *evsel, struct perf_sample *sample)
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 {
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 	if (trace_handler->acquire_event)
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 		return trace_handler->acquire_event(evsel, sample);
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 	return 0;
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 }
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-static int perf_evsel__process_lock_acquired(struct perf_evsel *evsel,
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-					      struct perf_sample *sample)
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+static int evsel__process_lock_acquired(struct evsel *evsel, struct perf_sample *sample)
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 {
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 	if (trace_handler->acquired_event)
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 		return trace_handler->acquired_event(evsel, sample);
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 	return 0;
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 }
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-static int perf_evsel__process_lock_contended(struct perf_evsel *evsel,
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-					      struct perf_sample *sample)
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+static int evsel__process_lock_contended(struct evsel *evsel, struct perf_sample *sample)
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 {
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 	if (trace_handler->contended_event)
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 		return trace_handler->contended_event(evsel, sample);
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 	return 0;
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 }
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-static int perf_evsel__process_lock_release(struct perf_evsel *evsel,
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-					    struct perf_sample *sample)
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+static int evsel__process_lock_release(struct evsel *evsel, struct perf_sample *sample)
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 {
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 	if (trace_handler->release_event)
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 		return trace_handler->release_event(evsel, sample);
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@@ -774,7 +771,7 @@
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 		pr_info("%10d: %s\n", st->tid, thread__comm_str(t));
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 		node = rb_next(node);
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 		thread__put(t);
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-	};
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+	}
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 }
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 static void dump_map(void)
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@@ -806,13 +803,13 @@
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 	return rc;
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 }
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-typedef int (*tracepoint_handler)(struct perf_evsel *evsel,
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+typedef int (*tracepoint_handler)(struct evsel *evsel,
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 				  struct perf_sample *sample);
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 static int process_sample_event(struct perf_tool *tool __maybe_unused,
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 				union perf_event *event,
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 				struct perf_sample *sample,
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-				struct perf_evsel *evsel,
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+				struct evsel *evsel,
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 				struct machine *machine)
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 {
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 	int err = 0;
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@@ -847,11 +844,11 @@
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 	}
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 }
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-static const struct perf_evsel_str_handler lock_tracepoints[] = {
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-	{ "lock:lock_acquire",	 perf_evsel__process_lock_acquire,   }, /* CONFIG_LOCKDEP */
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-	{ "lock:lock_acquired",	 perf_evsel__process_lock_acquired,  }, /* CONFIG_LOCKDEP, CONFIG_LOCK_STAT */
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-	{ "lock:lock_contended", perf_evsel__process_lock_contended, }, /* CONFIG_LOCKDEP, CONFIG_LOCK_STAT */
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-	{ "lock:lock_release",	 perf_evsel__process_lock_release,   }, /* CONFIG_LOCKDEP */
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+static const struct evsel_str_handler lock_tracepoints[] = {
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+	{ "lock:lock_acquire",	 evsel__process_lock_acquire,   }, /* CONFIG_LOCKDEP */
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+	{ "lock:lock_acquired",	 evsel__process_lock_acquired,  }, /* CONFIG_LOCKDEP, CONFIG_LOCK_STAT */
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+	{ "lock:lock_contended", evsel__process_lock_contended, }, /* CONFIG_LOCKDEP, CONFIG_LOCK_STAT */
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+	{ "lock:lock_release",	 evsel__process_lock_release,   }, /* CONFIG_LOCKDEP */
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 };
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 static bool force;
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@@ -866,17 +863,15 @@
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 		.ordered_events	 = true,
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 	};
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 	struct perf_data data = {
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-		.file      = {
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-			.path = input_name,
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-		},
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-		.mode      = PERF_DATA_MODE_READ,
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-		.force     = force,
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+		.path  = input_name,
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+		.mode  = PERF_DATA_MODE_READ,
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+		.force = force,
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 	};
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 	session = perf_session__new(&data, false, &eops);
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-	if (!session) {
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+	if (IS_ERR(session)) {
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 		pr_err("Initializing perf session failed\n");
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-		return -1;
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+		return PTR_ERR(session);
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 	}
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 	symbol__init(&session->header.env);