add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/perf/builtin-bench.c
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@@ -21,6 +21,7 @@
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 #include "builtin.h"
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 #include "bench/bench.h"
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+#include <locale.h>
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 #include <stdio.h>
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 #include <stdlib.h>
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 #include <string.h>
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@@ -225,7 +226,6 @@
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 		if (!bench->fn)
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 			break;
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 		printf("# Running %s/%s benchmark...\n", coll->name, bench->name);
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-		fflush(stdout);
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 		argv[1] = bench->name;
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 		run_bench(coll->name, bench->name, bench->fn, 1, argv);
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@@ -245,6 +245,10 @@
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 {
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 	struct collection *coll;
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 	int ret = 0;
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+
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+	/* Unbuffered output */
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+	setvbuf(stdout, NULL, _IONBF, 0);
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+	setlocale(LC_ALL, "");
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 	if (argc < 2) {
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 		/* No collection specified. */
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@@ -299,7 +303,6 @@
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 			if (bench_format == BENCH_FORMAT_DEFAULT)
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 				printf("# Running '%s/%s' benchmark:\n", coll->name, bench->name);
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-			fflush(stdout);
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 			ret = run_bench(coll->name, bench->name, bench->fn, argc-1, argv+1);
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 			goto end;
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 		}