perf top: Convert to Git option parsing (b456bae0) · Commits · e / devices / android_kernel_fairphone_FP4

Documentation/perf_counter/builtin-top.c

+105 −454

Original line number	Diff line number	Diff line
		@@ -45,8 +45,10 @@

		#include "perf.h"
		#include "util/util.h"
		#include "util/util.h"
		#include "util/parse-options.h"
		#include "util/parse-events.h"

		#include <getopt.h>
		#include <assert.h>
		#include <fcntl.h>

		@@ -70,8 +72,7 @@

		static int system_wide = 0;

		static int nr_counters = 0;
		static __u64 event_id[MAX_COUNTERS] = {
		static __u64 default_event_id[MAX_COUNTERS] = {
		EID(PERF_TYPE_SOFTWARE, PERF_COUNT_TASK_CLOCK),
		EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CONTEXT_SWITCHES),
		EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_MIGRATIONS),
		@@ -88,7 +89,7 @@ static int fd[MAX_NR_CPUS][MAX_COUNTERS];

		static __u64 count_filter = 100;

		static int tid = -1;
		static int target_pid = -1;
		static int profile_cpu = -1;
		static int nr_cpus = 0;
		static int nmi = 1;
		@@ -100,8 +101,6 @@ static int use_mmap = 0;
		static int use_munmap = 0;
		static int freq = 0;

		static char *vmlinux;

		static char *sym_filter;
		static unsigned long filter_start;
		static unsigned long filter_end;
		@@ -110,18 +109,6 @@ static int delay_secs = 2;
		static int zero;
		static int dump_symtab;

		static int scale;

		struct source_line {
		uint64_t EIP;
		unsigned long count;
		char *line;
		struct source_line *next;
		};

		static struct source_line *lines;
		static struct source_line **lines_tail;

		static const unsigned int default_count[] = {
		1000000,
		1000000,
		@@ -131,194 +118,6 @@ static const unsigned int default_count[] = {
		10000,
		};

		static char *hw_event_names[] = {
		"CPU cycles",
		"instructions",
		"cache references",
		"cache misses",
		"branches",
		"branch misses",
		"bus cycles",
		};

		static char *sw_event_names[] = {
		"cpu clock ticks",
		"task clock ticks",
		"pagefaults",
		"context switches",
		"CPU migrations",
		"minor faults",
		"major faults",
		};

		struct event_symbol {
		__u64 event;
		char *symbol;
		};

		static struct event_symbol event_symbols[] = {
		{EID(PERF_TYPE_HARDWARE, PERF_COUNT_CPU_CYCLES), "cpu-cycles", },
		{EID(PERF_TYPE_HARDWARE, PERF_COUNT_CPU_CYCLES), "cycles", },
		{EID(PERF_TYPE_HARDWARE, PERF_COUNT_INSTRUCTIONS), "instructions", },
		{EID(PERF_TYPE_HARDWARE, PERF_COUNT_CACHE_REFERENCES), "cache-references", },
		{EID(PERF_TYPE_HARDWARE, PERF_COUNT_CACHE_MISSES), "cache-misses", },
		{EID(PERF_TYPE_HARDWARE, PERF_COUNT_BRANCH_INSTRUCTIONS), "branch-instructions", },
		{EID(PERF_TYPE_HARDWARE, PERF_COUNT_BRANCH_INSTRUCTIONS), "branches", },
		{EID(PERF_TYPE_HARDWARE, PERF_COUNT_BRANCH_MISSES), "branch-misses", },
		{EID(PERF_TYPE_HARDWARE, PERF_COUNT_BUS_CYCLES), "bus-cycles", },

		{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_CLOCK), "cpu-clock", },
		{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_TASK_CLOCK), "task-clock", },
		{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS), "page-faults", },
		{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS), "faults", },
		{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS_MIN), "minor-faults", },
		{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS_MAJ), "major-faults", },
		{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CONTEXT_SWITCHES), "context-switches", },
		{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CONTEXT_SWITCHES), "cs", },
		{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_MIGRATIONS), "cpu-migrations", },
		{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_MIGRATIONS), "migrations", },
		};

		#define __PERF_COUNTER_FIELD(config, name) \
		((config & PERF_COUNTER_##name##_MASK) >> PERF_COUNTER_##name##_SHIFT)

		#define PERF_COUNTER_RAW(config) __PERF_COUNTER_FIELD(config, RAW)
		#define PERF_COUNTER_CONFIG(config) __PERF_COUNTER_FIELD(config, CONFIG)
		#define PERF_COUNTER_TYPE(config) __PERF_COUNTER_FIELD(config, TYPE)
		#define PERF_COUNTER_ID(config) __PERF_COUNTER_FIELD(config, EVENT)

		static void display_events_help(void)
		{
		unsigned int i;
		__u64 e;

		printf(
		" -e EVENT --event=EVENT # symbolic-name abbreviations");

		for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
		int type, id;

		e = event_symbols[i].event;
		type = PERF_COUNTER_TYPE(e);
		id = PERF_COUNTER_ID(e);

		printf("\n %d:%d: %-20s",
		type, id, event_symbols[i].symbol);
		}

		printf("\n"
		" rNNN: raw PMU events (eventsel+umask)\n\n");
		}

		static void display_help(void)
		{
		printf(
		"Usage: kerneltop [<options>]\n"
		" Or: kerneltop -S [<options>] COMMAND [ARGS]\n\n"
		"KernelTop Options (up to %d event types can be specified at once):\n\n",
		MAX_COUNTERS);

		display_events_help();

		printf(
		" -c CNT --count=CNT # event period to sample\n\n"
		" -C CPU --cpu=CPU # CPU (-1 for all) [default: -1]\n"
		" -p PID --pid=PID # PID of sampled task (-1 for all) [default: -1]\n\n"
		" -l # show scale factor for RR events\n"
		" -d delay --delay=<seconds> # sampling/display delay [default: 2]\n"
		" -f CNT --filter=CNT # min-event-count filter [default: 100]\n\n"
		" -r prio --realtime=<prio> # event acquisition runs with SCHED_FIFO policy\n"
		" -s symbol --symbol=<symbol> # function to be showed annotated one-shot\n"
		" -x path --vmlinux=<path> # the vmlinux binary, required for -s use\n"
		" -z --zero # zero counts after display\n"
		" -D --dump_symtab # dump symbol table to stderr on startup\n"
		" -m pages --mmap_pages=<pages> # number of mmap data pages\n"
		" -M --mmap_info # print mmap info stream\n"
		" -U --munmap_info # print munmap info stream\n"
		);

		exit(0);
		}

		static char *event_name(int ctr)
		{
		__u64 config = event_id[ctr];
		int type = PERF_COUNTER_TYPE(config);
		int id = PERF_COUNTER_ID(config);
		static char buf[32];

		if (PERF_COUNTER_RAW(config)) {
		sprintf(buf, "raw 0x%llx", PERF_COUNTER_CONFIG(config));
		return buf;
		}

		switch (type) {
		case PERF_TYPE_HARDWARE:
		if (id < PERF_HW_EVENTS_MAX)
		return hw_event_names[id];
		return "unknown-hardware";

		case PERF_TYPE_SOFTWARE:
		if (id < PERF_SW_EVENTS_MAX)
		return sw_event_names[id];
		return "unknown-software";

		default:
		break;
		}

		return "unknown";
		}

		/*
		* Each event can have multiple symbolic names.
		* Symbolic names are (almost) exactly matched.
		*/
		static __u64 match_event_symbols(char *str)
		{
		__u64 config, id;
		int type;
		unsigned int i;

		if (sscanf(str, "r%llx", &config) == 1)
		return config \| PERF_COUNTER_RAW_MASK;

		if (sscanf(str, "%d:%llu", &type, &id) == 2)
		return EID(type, id);

		for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
		if (!strncmp(str, event_symbols[i].symbol,
		strlen(event_symbols[i].symbol)))
		return event_symbols[i].event;
		}

		return ~0ULL;
		}

		static int parse_events(char *str)
		{
		__u64 config;

		again:
		if (nr_counters == MAX_COUNTERS)
		return -1;

		config = match_event_symbols(str);
		if (config == ~0ULL)
		return -1;

		event_id[nr_counters] = config;
		nr_counters++;

		str = strstr(str, ",");
		if (str) {
		str++;
		goto again;
		}

		return 0;
		}

		/*
		* Symbols
		*/
		@@ -331,7 +130,6 @@ struct sym_entry {
		char *sym;
		unsigned long count[MAX_COUNTERS];
		int skip;
		struct source_line *source;
		};

		#define MAX_SYMS 100000
		@@ -342,8 +140,6 @@ struct sym_entry *sym_filter_entry;

		static struct sym_entry sym_table[MAX_SYMS];

		static void show_details(struct sym_entry *sym);

		/*
		* Ordering weight: count-1 * count-2 * ... / count-n
		*/
		@@ -419,15 +215,15 @@ static void print_sym_table(void)

		printf( "], ");

		if (tid != -1)
		printf(" (tid: %d", tid);
		if (target_pid != -1)
		printf(" (target_pid: %d", target_pid);
		else
		printf(" (all");

		if (profile_cpu != -1)
		printf(", cpu: %d)\n", profile_cpu);
		else {
		if (tid != -1)
		if (target_pid != -1)
		printf(")\n");
		else
		printf(", %d CPUs)\n", nr_cpus);
		@@ -463,9 +259,6 @@ static void print_sym_table(void)
		pcnt, tmp[i].addr, tmp[i].sym);
		}

		if (sym_filter_entry)
		show_details(sym_filter_entry);

		{
		struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };

		@@ -628,134 +421,8 @@ static void parse_symbols(void)
		}
		}

		/*
		* Source lines
		*/

		static void parse_vmlinux(char *filename)
		{
		FILE *file;
		char command[PATH_MAX*2];
		if (!filename)
		return;

		sprintf(command, "objdump --start-address=0x%016lx --stop-address=0x%016lx -dS %s", filter_start, filter_end, filename);

		file = popen(command, "r");
		if (!file)
		return;

		lines_tail = &lines;
		while (!feof(file)) {
		struct source_line *src;
		size_t dummy = 0;
		char *c;

		src = malloc(sizeof(struct source_line));
		assert(src != NULL);
		memset(src, 0, sizeof(struct source_line));

		if (getline(&src->line, &dummy, file) < 0)
		break;
		if (!src->line)
		break;

		c = strchr(src->line, '\n');
		if (c)
		*c = 0;

		src->next = NULL;
		*lines_tail = src;
		lines_tail = &src->next;

		if (strlen(src->line)>8 && src->line[8] == ':')
		src->EIP = strtoull(src->line, NULL, 16);
		if (strlen(src->line)>8 && src->line[16] == ':')
		src->EIP = strtoull(src->line, NULL, 16);
		}
		pclose(file);
		}

		static void record_precise_ip(uint64_t ip)
		{
		struct source_line *line;

		for (line = lines; line; line = line->next) {
		if (line->EIP == ip)
		line->count++;
		if (line->EIP > ip)
		break;
		}
		}

		static void lookup_sym_in_vmlinux(struct sym_entry *sym)
		{
		struct source_line *line;
		char pattern[PATH_MAX];
		sprintf(pattern, "<%s>:", sym->sym);

		for (line = lines; line; line = line->next) {
		if (strstr(line->line, pattern)) {
		sym->source = line;
		break;
		}
		}
		}

		static void show_lines(struct source_line *line_queue, int line_queue_count)
		{
		int i;
		struct source_line *line;

		line = line_queue;
		for (i = 0; i < line_queue_count; i++) {
		printf("%8li\t%s\n", line->count, line->line);
		line = line->next;
		}
		}

		#define TRACE_COUNT 3

		static void show_details(struct sym_entry *sym)
		{
		struct source_line *line;
		struct source_line *line_queue = NULL;
		int displayed = 0;
		int line_queue_count = 0;

		if (!sym->source)
		lookup_sym_in_vmlinux(sym);
		if (!sym->source)
		return;

		printf("Showing details for %s\n", sym->sym);

		line = sym->source;
		while (line) {
		if (displayed && strstr(line->line, ">:"))
		break;

		if (!line_queue_count)
		line_queue = line;
		line_queue_count ++;

		if (line->count >= count_filter) {
		show_lines(line_queue, line_queue_count);
		line_queue_count = 0;
		line_queue = NULL;
		} else if (line_queue_count > TRACE_COUNT) {
		line_queue = line_queue->next;
		line_queue_count --;
		}

		line->count = 0;
		displayed++;
		if (displayed > 300)
		break;
		line = line->next;
		}
		}

		/*
		* Binary search in the histogram table and record the hit:
		*/
		@@ -764,8 +431,6 @@ static void record_ip(uint64_t ip, int counter)
		int left_idx, middle_idx, right_idx, idx;
		unsigned long left, middle, right;

		record_precise_ip(ip);

		left_idx = 0;
		right_idx = sym_table_count-1;
		assert(ip <= max_ip && ip >= min_ip);
		@@ -822,97 +487,6 @@ static void process_event(uint64_t ip, int counter)
		record_ip(ip, counter);
		}

		static void process_options(int argc, char **argv)
		{
		int error = 0, counter;

		for (;;) {
		int option_index = 0;
		/** Options for getopt */
		static struct option long_options[] = {
		{"count", required_argument, NULL, 'c'},
		{"cpu", required_argument, NULL, 'C'},
		{"delay", required_argument, NULL, 'd'},
		{"dump_symtab", no_argument, NULL, 'D'},
		{"event", required_argument, NULL, 'e'},
		{"filter", required_argument, NULL, 'f'},
		{"group", required_argument, NULL, 'g'},
		{"help", no_argument, NULL, 'h'},
		{"nmi", required_argument, NULL, 'n'},
		{"mmap_info", no_argument, NULL, 'M'},
		{"mmap_pages", required_argument, NULL, 'm'},
		{"munmap_info", no_argument, NULL, 'U'},
		{"pid", required_argument, NULL, 'p'},
		{"realtime", required_argument, NULL, 'r'},
		{"scale", no_argument, NULL, 'l'},
		{"symbol", required_argument, NULL, 's'},
		{"stat", no_argument, NULL, 'S'},
		{"vmlinux", required_argument, NULL, 'x'},
		{"zero", no_argument, NULL, 'z'},
		{"freq", required_argument, NULL, 'F'},
		{NULL, 0, NULL, 0 }
		};
		int c = getopt_long(argc, argv, "+:ac:C:d:De:f:g:hln:m:p:r:s:Sx:zMUF:",
		long_options, &option_index);
		if (c == -1)
		break;

		switch (c) {
		case 'a': system_wide = 1; break;
		case 'c': default_interval = atoi(optarg); break;
		case 'C':
		/* CPU and PID are mutually exclusive */
		if (tid != -1) {
		printf("WARNING: CPU switch overriding PID\n");
		sleep(1);
		tid = -1;
		}
		profile_cpu = atoi(optarg); break;
		case 'd': delay_secs = atoi(optarg); break;
		case 'D': dump_symtab = 1; break;

		case 'e': error = parse_events(optarg); break;

		case 'f': count_filter = atoi(optarg); break;
		case 'g': group = atoi(optarg); break;
		case 'h': display_help(); break;
		case 'l': scale = 1; break;
		case 'n': nmi = atoi(optarg); break;
		case 'p':
		/* CPU and PID are mutually exclusive */
		if (profile_cpu != -1) {
		printf("WARNING: PID switch overriding CPU\n");
		sleep(1);
		profile_cpu = -1;
		}
		tid = atoi(optarg); break;
		case 'r': realtime_prio = atoi(optarg); break;
		case 's': sym_filter = strdup(optarg); break;
		case 'x': vmlinux = strdup(optarg); break;
		case 'z': zero = 1; break;
		case 'm': mmap_pages = atoi(optarg); break;
		case 'M': use_mmap = 1; break;
		case 'U': use_munmap = 1; break;
		case 'F': freq = 1; default_interval = atoi(optarg); break;
		default: error = 1; break;
		}
		}
		if (error)
		display_help();

		if (!nr_counters) {
		nr_counters = 1;
		event_id[0] = 0;
		}

		for (counter = 0; counter < nr_counters; counter++) {
		if (event_count[counter])
		continue;

		event_count[counter] = default_interval;
		}
		}

		struct mmap_data {
		int counter;
		void *base;
		@@ -973,11 +547,11 @@ static void mmap_read(struct mmap_data *md)
		struct ip_event {
		struct perf_event_header header;
		__u64 ip;
		__u32 pid, tid;
		__u32 pid, target_pid;
		};
		struct mmap_event {
		struct perf_event_header header;
		__u32 pid, tid;
		__u32 pid, target_pid;
		__u64 start;
		__u64 len;
		__u64 pgoff;
		@@ -1043,7 +617,7 @@ static void mmap_read(struct mmap_data *md)
		static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS];
		static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS];

		int cmd_top(int argc, char *argv, const char prefix)
		static int __cmd_top(void)
		{
		struct perf_counter_hw_event hw_event;
		pthread_t thread;
		@@ -1051,27 +625,12 @@ int cmd_top(int argc, char *argv, const char prefix)
		unsigned int cpu;
		int ret;

		page_size = sysconf(_SC_PAGE_SIZE);

		process_options(argc, argv);

		nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);
		assert(nr_cpus <= MAX_NR_CPUS);
		assert(nr_cpus >= 0);

		if (tid != -1 \|\| profile_cpu != -1)
		nr_cpus = 1;

		parse_symbols();
		if (vmlinux && sym_filter_entry)
		parse_vmlinux(vmlinux);

		for (i = 0; i < nr_cpus; i++) {
		group_fd = -1;
		for (counter = 0; counter < nr_counters; counter++) {

		cpu = profile_cpu;
		if (tid == -1 && profile_cpu == -1)
		if (target_pid == -1 && profile_cpu == -1)
		cpu = i;

		memset(&hw_event, 0, sizeof(hw_event));
		@@ -1083,7 +642,7 @@ int cmd_top(int argc, char *argv, const char prefix)
		hw_event.munmap = use_munmap;
		hw_event.freq = freq;

		fd[i][counter] = sys_perf_counter_open(&hw_event, tid, cpu, group_fd, 0);
		fd[i][counter] = sys_perf_counter_open(&hw_event, target_pid, cpu, group_fd, 0);
		if (fd[i][counter] < 0) {
		int err = errno;
		printf("kerneltop error: syscall returned with %d (%s)\n",
		@@ -1147,3 +706,95 @@ int cmd_top(int argc, char *argv, const char prefix)

		return 0;
		}

		static const char * const top_usage[] = {
		"perf top [<options>]",
		NULL
		};

		static char events_help_msg[EVENTS_HELP_MAX];

		static const struct option options[] = {
		OPT_CALLBACK('e', "event", NULL, "event",
		events_help_msg, parse_events),
		OPT_INTEGER('c', "count", &default_interval,
		"event period to sample"),
		OPT_INTEGER('p', "pid", &target_pid,
		"profile events on existing pid"),
		OPT_BOOLEAN('a', "all-cpus", &system_wide,
		"system-wide collection from all CPUs"),
		OPT_INTEGER('C', "CPU", &profile_cpu,
		"CPU to profile on"),
		OPT_INTEGER('m', "mmap-pages", &mmap_pages,
		"number of mmap data pages"),
		OPT_INTEGER('r', "realtime", &realtime_prio,
		"collect data with this RT SCHED_FIFO priority"),
		OPT_INTEGER('d', "delay", &realtime_prio,
		"number of seconds to delay between refreshes"),
		OPT_BOOLEAN('D', "dump-symtab", &dump_symtab,
		"dump the symbol table used for profiling"),
		OPT_INTEGER('f', "--count-filter", &count_filter,
		"only display functions with more events than this"),
		OPT_BOOLEAN('g', "group", &group,
		"put the counters into a counter group"),
		OPT_STRING('s', "sym-filter", &sym_filter, "pattern",
		"only display symbols matchig this pattern"),
		OPT_BOOLEAN('z', "zero", &group,
		"zero history across updates"),
		OPT_BOOLEAN('M', "use-mmap", &use_mmap,
		"track mmap events"),
		OPT_BOOLEAN('U', "use-munmap", &use_munmap,
		"track munmap events"),
		OPT_INTEGER('F', "--freq", &freq,
		"profile at this frequency"),
		OPT_END()
		};

		int cmd_top(int argc, const char *argv, const char prefix)
		{
		int counter;

		page_size = sysconf(_SC_PAGE_SIZE);

		create_events_help(events_help_msg);
		memcpy(event_id, default_event_id, sizeof(default_event_id));

		argc = parse_options(argc, argv, options, top_usage, 0);
		if (argc)
		usage_with_options(top_usage, options);

		if (freq) {
		default_interval = freq;
		freq = 1;
		}

		/* CPU and PID are mutually exclusive */
		if (target_pid != -1 && profile_cpu != -1) {
		printf("WARNING: PID switch overriding CPU\n");
		sleep(1);
		profile_cpu = -1;
		}

		if (!nr_counters) {
		nr_counters = 1;
		event_id[0] = 0;
		}

		for (counter = 0; counter < nr_counters; counter++) {
		if (event_count[counter])
		continue;

		event_count[counter] = default_interval;
		}

		nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);
		assert(nr_cpus <= MAX_NR_CPUS);
		assert(nr_cpus >= 0);

		if (target_pid != -1 \|\| profile_cpu != -1)
		nr_cpus = 1;

		parse_symbols();

		return __cmd_top();
		}