[GitHub/mt8127/android_kernel_alcatel_ttab.git] / tools / perf / bench / mem-memset.c

/*
 * mem-memset.c
 *
 * memset: Simple memory set in various ways
 *
 * Trivial clone of mem-memcpy.c.
 */

#include "../perf.h"
#include "../util/util.h"
#include "../util/parse-options.h"
#include "../util/header.h"
#include "bench.h"
#include "mem-memset-arch.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <errno.h>

#define K 1024

static const char	*length_str	= "1MB";
static const char	*routine	= "default";
static int		iterations	= 1;
static bool		use_cycle;
static int		cycle_fd;
static bool		only_prefault;
static bool		no_prefault;

static const struct option options[] = {
	OPT_STRING('l', "length", &length_str, "1MB",
		    "Specify length of memory to set. "
		    "Available units: B, KB, MB, GB and TB (upper and lower)"),
	OPT_STRING('r', "routine", &routine, "default",
		    "Specify routine to set"),
	OPT_INTEGER('i', "iterations", &iterations,
		    "repeat memset() invocation this number of times"),
	OPT_BOOLEAN('c', "cycle", &use_cycle,
		    "Use cycles event instead of gettimeofday() for measuring"),
	OPT_BOOLEAN('o', "only-prefault", &only_prefault,
		    "Show only the result with page faults before memset()"),
	OPT_BOOLEAN('n', "no-prefault", &no_prefault,
		    "Show only the result without page faults before memset()"),
	OPT_END()
};

typedef void *(*memset_t)(void *, int, size_t);

struct routine {
	const char *name;
	const char *desc;
	memset_t fn;
};

static const struct routine routines[] = {
	{ "default",
	  "Default memset() provided by glibc",
	  memset },
#ifdef ARCH_X86_64

#define MEMSET_FN(fn, name, desc) { name, desc, fn },
#include "mem-memset-x86-64-asm-def.h"
#undef MEMSET_FN

#endif

	{ NULL,
	  NULL,
	  NULL   }
};

static const char * const bench_mem_memset_usage[] = {
	"perf bench mem memset <options>",
	NULL
};

static struct perf_event_attr cycle_attr = {
	.type		= PERF_TYPE_HARDWARE,
	.config		= PERF_COUNT_HW_CPU_CYCLES
};

static void init_cycle(void)
{
	cycle_fd = sys_perf_event_open(&cycle_attr, getpid(), -1, -1, 0);

	if (cycle_fd < 0 && errno == ENOSYS)
		die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
	else
		BUG_ON(cycle_fd < 0);
}

static u64 get_cycle(void)
{
	int ret;
	u64 clk;

	ret = read(cycle_fd, &clk, sizeof(u64));
	BUG_ON(ret != sizeof(u64));

	return clk;
}

static double timeval2double(struct timeval *ts)
{
	return (double)ts->tv_sec +
		(double)ts->tv_usec / (double)1000000;
}

static void alloc_mem(void **dst, size_t length)
{
	*dst = zalloc(length);
	if (!dst)
		die("memory allocation failed - maybe length is too large?\n");
}

static u64 do_memset_cycle(memset_t fn, size_t len, bool prefault)
{
	u64 cycle_start = 0ULL, cycle_end = 0ULL;
	void *dst = NULL;
	int i;

	alloc_mem(&dst, len);

	if (prefault)
		fn(dst, -1, len);

	cycle_start = get_cycle();
	for (i = 0; i < iterations; ++i)
		fn(dst, i, len);
	cycle_end = get_cycle();

	free(dst);
	return cycle_end - cycle_start;
}

static double do_memset_gettimeofday(memset_t fn, size_t len, bool prefault)
{
	struct timeval tv_start, tv_end, tv_diff;
	void *dst = NULL;
	int i;

	alloc_mem(&dst, len);

	if (prefault)
		fn(dst, -1, len);

	BUG_ON(gettimeofday(&tv_start, NULL));
	for (i = 0; i < iterations; ++i)
		fn(dst, i, len);
	BUG_ON(gettimeofday(&tv_end, NULL));

	timersub(&tv_end, &tv_start, &tv_diff);

	free(dst);
	return (double)((double)len / timeval2double(&tv_diff));
}

#define pf (no_prefault ? 0 : 1)

#define print_bps(x) do {					\
		if (x < K)					\
			printf(" %14lf B/Sec", x);		\
		else if (x < K * K)				\
			printf(" %14lfd KB/Sec", x / K);	\
		else if (x < K * K * K)				\
			printf(" %14lf MB/Sec", x / K / K);	\
		else						\
			printf(" %14lf GB/Sec", x / K / K / K); \
	} while (0)

int bench_mem_memset(int argc, const char **argv,
		     const char *prefix __maybe_unused)
{
	int i;
	size_t len;
	double result_bps[2];
	u64 result_cycle[2];

	argc = parse_options(argc, argv, options,
			     bench_mem_memset_usage, 0);

	if (use_cycle)
		init_cycle();

	len = (size_t)perf_atoll((char *)length_str);

	result_cycle[0] = result_cycle[1] = 0ULL;
	result_bps[0] = result_bps[1] = 0.0;

	if ((s64)len <= 0) {
		fprintf(stderr, "Invalid length:%s\n", length_str);
		return 1;
	}

	/* same to without specifying either of prefault and no-prefault */
	if (only_prefault && no_prefault)
		only_prefault = no_prefault = false;

	for (i = 0; routines[i].name; i++) {
		if (!strcmp(routines[i].name, routine))
			break;
	}
	if (!routines[i].name) {
		printf("Unknown routine:%s\n", routine);
		printf("Available routines...\n");
		for (i = 0; routines[i].name; i++) {
			printf("\t%s ... %s\n",
			       routines[i].name, routines[i].desc);
		}
		return 1;
	}

	if (bench_format == BENCH_FORMAT_DEFAULT)
		printf("# Copying %s Bytes ...\n\n", length_str);

	if (!only_prefault && !no_prefault) {
		/* show both of results */
		if (use_cycle) {
			result_cycle[0] =
				do_memset_cycle(routines[i].fn, len, false);
			result_cycle[1] =
				do_memset_cycle(routines[i].fn, len, true);
		} else {
			result_bps[0] =
				do_memset_gettimeofday(routines[i].fn,
						len, false);
			result_bps[1] =
				do_memset_gettimeofday(routines[i].fn,
						len, true);
		}
	} else {
		if (use_cycle) {
			result_cycle[pf] =
				do_memset_cycle(routines[i].fn,
						len, only_prefault);
		} else {
			result_bps[pf] =
				do_memset_gettimeofday(routines[i].fn,
						len, only_prefault);
		}
	}

	switch (bench_format) {
	case BENCH_FORMAT_DEFAULT:
		if (!only_prefault && !no_prefault) {
			if (use_cycle) {
				printf(" %14lf Cycle/Byte\n",
					(double)result_cycle[0]
					/ (double)len);
				printf(" %14lf Cycle/Byte (with prefault)\n ",
					(double)result_cycle[1]
					/ (double)len);
			} else {
				print_bps(result_bps[0]);
				printf("\n");
				print_bps(result_bps[1]);
				printf(" (with prefault)\n");
			}
		} else {
			if (use_cycle) {
				printf(" %14lf Cycle/Byte",
					(double)result_cycle[pf]
					/ (double)len);
			} else
				print_bps(result_bps[pf]);

			printf("%s\n", only_prefault ? " (with prefault)" : "");
		}
		break;
	case BENCH_FORMAT_SIMPLE:
		if (!only_prefault && !no_prefault) {
			if (use_cycle) {
				printf("%lf %lf\n",
					(double)result_cycle[0] / (double)len,
					(double)result_cycle[1] / (double)len);
			} else {
				printf("%lf %lf\n",
					result_bps[0], result_bps[1]);
			}
		} else {
			if (use_cycle) {
				printf("%lf\n", (double)result_cycle[pf]
					/ (double)len);
			} else
				printf("%lf\n", result_bps[pf]);
		}
		break;
	default:
		/* reaching this means there's some disaster: */
		die("unknown format: %d\n", bench_format);
		break;
	}

	return 0;
}
Commit	Line	Data
be3de80d JB	1	/*
	2	* mem-memset.c
	3	*
	4	* memset: Simple memory set in various ways
	5	*
	6	* Trivial clone of mem-memcpy.c.
	7	*/
be3de80d JB	8
	9	#include "../perf.h"
	10	#include "../util/util.h"
	11	#include "../util/parse-options.h"
	12	#include "../util/header.h"
	13	#include "bench.h"
	14	#include "mem-memset-arch.h"
	15
	16	#include <stdio.h>
	17	#include <stdlib.h>
	18	#include <string.h>
	19	#include <sys/time.h>
	20	#include <errno.h>
	21
	22	#define K 1024
	23
	24	static const char *length_str = "1MB";
	25	static const char *routine = "default";
e3e877e7	26	static int iterations = 1;
17d7a112 HM	27	static bool use_cycle;
17d7a112 HM	28	static int cycle_fd;
be3de80d JB	29	static bool only_prefault;
	30	static bool no_prefault;
	31
	32	static const struct option options[] = {
	33	OPT_STRING('l', "length", &length_str, "1MB",
08942f6d NK	34	"Specify length of memory to set. "
08942f6d NK	35	"Available units: B, KB, MB, GB and TB (upper and lower)"),
be3de80d	36	OPT_STRING('r', "routine", &routine, "default",
08942f6d	37	"Specify routine to set"),
e3e877e7 JB	38	OPT_INTEGER('i', "iterations", &iterations,
e3e877e7 JB	39	"repeat memset() invocation this number of times"),
17d7a112	40	OPT_BOOLEAN('c', "cycle", &use_cycle,
08942f6d	41	"Use cycles event instead of gettimeofday() for measuring"),
be3de80d JB	42	OPT_BOOLEAN('o', "only-prefault", &only_prefault,
	43	"Show only the result with page faults before memset()"),
	44	OPT_BOOLEAN('n', "no-prefault", &no_prefault,
	45	"Show only the result without page faults before memset()"),
	46	OPT_END()
	47	};
	48
	49	typedef void (memset_t)(void *, int, size_t);
	50
	51	struct routine {
	52	const char *name;
	53	const char *desc;
	54	memset_t fn;
	55	};
	56
	57	static const struct routine routines[] = {
	58	{ "default",
	59	"Default memset() provided by glibc",
	60	memset },
	61	#ifdef ARCH_X86_64
	62
	63	#define MEMSET_FN(fn, name, desc) { name, desc, fn },
	64	#include "mem-memset-x86-64-asm-def.h"
	65	#undef MEMSET_FN
	66
	67	#endif
	68
	69	{ NULL,
	70	NULL,
	71	NULL }
	72	};
	73
	74	static const char * const bench_mem_memset_usage[] = {
	75	"perf bench mem memset <options>",
	76	NULL
	77	};
	78
17d7a112	79	static struct perf_event_attr cycle_attr = {
be3de80d JB	80	.type = PERF_TYPE_HARDWARE,
	81	.config = PERF_COUNT_HW_CPU_CYCLES
	82	};
	83
17d7a112	84	static void init_cycle(void)
be3de80d	85	{
17d7a112	86	cycle_fd = sys_perf_event_open(&cycle_attr, getpid(), -1, -1, 0);
be3de80d	87
17d7a112	88	if (cycle_fd < 0 && errno == ENOSYS)
be3de80d JB	89	die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
be3de80d JB	90	else
17d7a112	91	BUG_ON(cycle_fd < 0);
be3de80d JB	92	}
be3de80d JB	93
17d7a112	94	static u64 get_cycle(void)
be3de80d JB	95	{
	96	int ret;
	97	u64 clk;
	98
17d7a112	99	ret = read(cycle_fd, &clk, sizeof(u64));
be3de80d JB	100	BUG_ON(ret != sizeof(u64));
	101
	102	return clk;
	103	}
	104
	105	static double timeval2double(struct timeval *ts)
	106	{
	107	return (double)ts->tv_sec +
	108	(double)ts->tv_usec / (double)1000000;
	109	}
	110
	111	static void alloc_mem(void **dst, size_t length)
	112	{
	113	*dst = zalloc(length);
	114	if (!dst)
	115	die("memory allocation failed - maybe length is too large?\n");
	116	}
	117
17d7a112	118	static u64 do_memset_cycle(memset_t fn, size_t len, bool prefault)
be3de80d	119	{
17d7a112	120	u64 cycle_start = 0ULL, cycle_end = 0ULL;
be3de80d	121	void *dst = NULL;
e3e877e7	122	int i;
be3de80d JB	123
	124	alloc_mem(&dst, len);
	125
	126	if (prefault)
	127	fn(dst, -1, len);
	128
17d7a112	129	cycle_start = get_cycle();
e3e877e7 JB	130	for (i = 0; i < iterations; ++i)
e3e877e7 JB	131	fn(dst, i, len);
17d7a112	132	cycle_end = get_cycle();
be3de80d JB	133
be3de80d JB	134	free(dst);
17d7a112	135	return cycle_end - cycle_start;
be3de80d JB	136	}
	137
	138	static double do_memset_gettimeofday(memset_t fn, size_t len, bool prefault)
	139	{
	140	struct timeval tv_start, tv_end, tv_diff;
	141	void *dst = NULL;
e3e877e7	142	int i;
be3de80d JB	143
	144	alloc_mem(&dst, len);
	145
	146	if (prefault)
	147	fn(dst, -1, len);
	148
	149	BUG_ON(gettimeofday(&tv_start, NULL));
e3e877e7 JB	150	for (i = 0; i < iterations; ++i)
e3e877e7 JB	151	fn(dst, i, len);
be3de80d JB	152	BUG_ON(gettimeofday(&tv_end, NULL));
	153
	154	timersub(&tv_end, &tv_start, &tv_diff);
	155
	156	free(dst);
	157	return (double)((double)len / timeval2double(&tv_diff));
	158	}
	159
	160	#define pf (no_prefault ? 0 : 1)
	161
	162	#define print_bps(x) do { \
	163	if (x < K) \
	164	printf(" %14lf B/Sec", x); \
	165	else if (x < K * K) \
	166	printf(" %14lfd KB/Sec", x / K); \
	167	else if (x < K * K * K) \
	168	printf(" %14lf MB/Sec", x / K / K); \
	169	else \
	170	printf(" %14lf GB/Sec", x / K / K / K); \
	171	} while (0)
	172
	173	int bench_mem_memset(int argc, const char **argv,
1d037ca1	174	const char *prefix __maybe_unused)
be3de80d JB	175	{
	176	int i;
	177	size_t len;
	178	double result_bps[2];
17d7a112	179	u64 result_cycle[2];
be3de80d JB	180
	181	argc = parse_options(argc, argv, options,
	182	bench_mem_memset_usage, 0);
	183
17d7a112 HM	184	if (use_cycle)
17d7a112 HM	185	init_cycle();
be3de80d JB	186
	187	len = (size_t)perf_atoll((char *)length_str);
	188
17d7a112	189	result_cycle[0] = result_cycle[1] = 0ULL;
be3de80d JB	190	result_bps[0] = result_bps[1] = 0.0;
	191
	192	if ((s64)len <= 0) {
	193	fprintf(stderr, "Invalid length:%s\n", length_str);
	194	return 1;
	195	}
	196
	197	/* same to without specifying either of prefault and no-prefault */
	198	if (only_prefault && no_prefault)
	199	only_prefault = no_prefault = false;
	200
	201	for (i = 0; routines[i].name; i++) {
	202	if (!strcmp(routines[i].name, routine))
	203	break;
	204	}
	205	if (!routines[i].name) {
	206	printf("Unknown routine:%s\n", routine);
	207	printf("Available routines...\n");
	208	for (i = 0; routines[i].name; i++) {
	209	printf("\t%s ... %s\n",
	210	routines[i].name, routines[i].desc);
	211	}
	212	return 1;
	213	}
	214
	215	if (bench_format == BENCH_FORMAT_DEFAULT)
	216	printf("# Copying %s Bytes ...\n\n", length_str);
	217
	218	if (!only_prefault && !no_prefault) {
	219	/* show both of results */
17d7a112 HM	220	if (use_cycle) {
	221	result_cycle[0] =
	222	do_memset_cycle(routines[i].fn, len, false);
	223	result_cycle[1] =
	224	do_memset_cycle(routines[i].fn, len, true);
be3de80d JB	225	} else {
	226	result_bps[0] =
	227	do_memset_gettimeofday(routines[i].fn,
	228	len, false);
	229	result_bps[1] =
	230	do_memset_gettimeofday(routines[i].fn,
	231	len, true);
	232	}
	233	} else {
17d7a112 HM	234	if (use_cycle) {
	235	result_cycle[pf] =
	236	do_memset_cycle(routines[i].fn,
be3de80d JB	237	len, only_prefault);
	238	} else {
	239	result_bps[pf] =
	240	do_memset_gettimeofday(routines[i].fn,
	241	len, only_prefault);
	242	}
	243	}
	244
	245	switch (bench_format) {
	246	case BENCH_FORMAT_DEFAULT:
	247	if (!only_prefault && !no_prefault) {
17d7a112 HM	248	if (use_cycle) {
	249	printf(" %14lf Cycle/Byte\n",
	250	(double)result_cycle[0]
be3de80d	251	/ (double)len);
17d7a112 HM	252	printf(" %14lf Cycle/Byte (with prefault)\n ",
17d7a112 HM	253	(double)result_cycle[1]
be3de80d JB	254	/ (double)len);
	255	} else {
	256	print_bps(result_bps[0]);
	257	printf("\n");
	258	print_bps(result_bps[1]);
	259	printf(" (with prefault)\n");
	260	}
	261	} else {
17d7a112 HM	262	if (use_cycle) {
	263	printf(" %14lf Cycle/Byte",
	264	(double)result_cycle[pf]
be3de80d JB	265	/ (double)len);
	266	} else
	267	print_bps(result_bps[pf]);
	268
	269	printf("%s\n", only_prefault ? " (with prefault)" : "");
	270	}
	271	break;
	272	case BENCH_FORMAT_SIMPLE:
	273	if (!only_prefault && !no_prefault) {
17d7a112	274	if (use_cycle) {
be3de80d	275	printf("%lf %lf\n",
17d7a112 HM	276	(double)result_cycle[0] / (double)len,
17d7a112 HM	277	(double)result_cycle[1] / (double)len);
be3de80d JB	278	} else {
	279	printf("%lf %lf\n",
	280	result_bps[0], result_bps[1]);
	281	}
	282	} else {
17d7a112 HM	283	if (use_cycle) {
17d7a112 HM	284	printf("%lf\n", (double)result_cycle[pf]
be3de80d JB	285	/ (double)len);
	286	} else
	287	printf("%lf\n", result_bps[pf]);
	288	}
	289	break;
	290	default:
	291	/* reaching this means there's some disaster: */
	292	die("unknown format: %d\n", bench_format);
	293	break;
	294	}
	295
	296	return 0;
	297	}