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2023-12-11 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4

 kernel/tools/perf/perf.c
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@@ -1,4 +1,3 @@
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-// SPDX-License-Identifier: GPL-2.0
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 /*
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  * perf.c
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  *
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@@ -8,8 +7,12 @@
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  * perf top, perf record, perf report, etc.) are started.
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  */
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 #include "builtin.h"
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+#include "perf.h"
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+#include "util/build-id.h"
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+#include "util/cache.h"
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 #include "util/env.h"
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+#include <internal/lib.h> // page_size
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 #include <subcmd/exec-cmd.h>
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 #include "util/config.h"
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 #include <subcmd/run-command.h>
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@@ -18,8 +21,12 @@
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 #include "util/bpf-loader.h"
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 #include "util/debug.h"
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 #include "util/event.h"
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+#include "util/util.h" // usage()
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+#include "ui/ui.h"
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+#include "perf-sys.h"
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 #include <api/fs/fs.h>
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 #include <api/fs/tracing_path.h>
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+#include <perf/core.h>
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 #include <errno.h>
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 #include <pthread.h>
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 #include <signal.h>
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@@ -29,6 +36,8 @@
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 #include <sys/stat.h>
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 #include <unistd.h>
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 #include <linux/kernel.h>
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+#include <linux/string.h>
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+#include <linux/zalloc.h>
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 const char perf_usage_string[] =
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 	"perf [--version] [--help] [OPTIONS] COMMAND [ARGS]";
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@@ -298,6 +307,7 @@
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 		use_pager = 1;
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 	commit_pager_choice();
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+	perf_env__init(&perf_env);
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 	perf_env__set_cmdline(&perf_env, argc, argv);
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 	status = p->fn(argc, argv);
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 	perf_config__exit();
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@@ -420,6 +430,12 @@
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 	pthread_sigmask(SIG_UNBLOCK, &set, NULL);
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 }
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+static int libperf_print(enum libperf_print_level level,
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+			 const char *fmt, va_list ap)
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+{
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+	return veprintf(level, verbose, fmt, ap);
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+}
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+
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 int main(int argc, const char **argv)
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 {
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 	int err;
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@@ -430,8 +446,7 @@
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 	exec_cmd_init("perf", PREFIX, PERF_EXEC_PATH, EXEC_PATH_ENVIRONMENT);
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 	pager_init(PERF_PAGER_ENVIRONMENT);
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-	/* The page_size is placed in util object. */
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-	page_size = sysconf(_SC_PAGE_SIZE);
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+	libperf_init(libperf_print);
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 	cmd = extract_argv0_path(argv[0]);
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 	if (!cmd)