perf_counter tools: remove the standalone perf-report utility

With a built-in 'perf report' command now available, remove the
standalone implementation for good.

Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Documentation/perf_counter/perf-report.cc

@@ -1,515 +0,0 @@
-#define _GNU_SOURCE
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <unistd.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <limits.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <errno.h>
-#include <ctype.h>
-#include <time.h>
-#include <getopt.h>
-#include <assert.h>
-
-#include <sys/ioctl.h>
-#include <sys/poll.h>
-#include <sys/prctl.h>
-#include <sys/wait.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <linux/unistd.h>
-#include <linux/types.h>
-
-#include "../../include/linux/perf_counter.h"
-
-#include <set>
-#include <map>
-#include <string>
-
-
-#define SHOW_KERNEL	1
-#define SHOW_USER	2
-#define SHOW_HV		4
-
-static char 		const *input_name = "output.perf";
-static int		input;
-static int		show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
-
-static unsigned long	page_size;
-static unsigned long	mmap_window = 32;
-
-struct ip_event {
-	struct perf_event_header header;
-	__u64 ip;
-	__u32 pid, tid;
-};
-struct mmap_event {
-	struct perf_event_header header;
-	__u32 pid, tid;
-	__u64 start;
-	__u64 len;
-	__u64 pgoff;
-	char filename[PATH_MAX];
-};
-struct comm_event {
-	struct perf_event_header header;
-	__u32 pid,tid;
-	char comm[16];
-};
-
-typedef union event_union {
-	struct perf_event_header header;
-	struct ip_event ip;
-	struct mmap_event mmap;
-	struct comm_event comm;
-} event_t;
-
-struct section {
-	uint64_t start;
-	uint64_t end;
-
-	uint64_t offset;
-
-	std::string name;
-
-	section() { };
-
-	section(uint64_t stab) : end(stab) { };
-
-	section(uint64_t start, uint64_t size, uint64_t offset, std::string name) :
-		start(start), end(start + size), offset(offset), name(name)
-	{ };
-
-	bool operator < (const struct section &s) const {
-		return end < s.end;
-	};
-};
-
-typedef std::set<struct section> sections_t;
-
-struct symbol {
-	uint64_t start;
-	uint64_t end;
-
-	std::string name;
-
-	symbol() { };
-
-	symbol(uint64_t ip) : start(ip) { }
-
-	symbol(uint64_t start, uint64_t len, std::string name) :
-		start(start), end(start + len), name(name)
-	{ };
-
-	bool operator < (const struct symbol &s) const {
-		return start < s.start;
-	};
-};
-
-typedef std::set<struct symbol> symbols_t;
-
-struct dso {
-	sections_t sections;
-	symbols_t syms;
-};
-
-static std::map<std::string, struct dso> dsos;
-
-static void load_dso_sections(std::string dso_name)
-{
-	struct dso &dso = dsos[dso_name];
-
-	std::string cmd = "readelf -DSW " + dso_name;
-
-	FILE *file = popen(cmd.c_str(), "r");
-	if (!file) {
-		perror("failed to open pipe");
-		exit(-1);
-	}
-
-	char *line = NULL;
-	size_t n = 0;
-
-	while (!feof(file)) {
-		uint64_t addr, off, size;
-		char name[32];
-
-		if (getline(&line, &n, file) < 0)
-			break;
-		if (!line)
-			break;
-
-		if (sscanf(line, "  [%*2d] %16s %*14s %Lx %Lx %Lx",
-					name, &addr, &off, &size) == 4) {
-
-			dso.sections.insert(section(addr, size, addr - off, name));
-		}
-#if 0
-		/*
-		 * for reading readelf symbols (-s), however these don't seem
-		 * to include nearly everything, so use nm for that.
-		 */
-		if (sscanf(line, " %*4d %*3d: %Lx %5Lu %*7s %*6s %*7s %3d %s",
-			   &start, &size, &section, sym) == 4) {
-
-			start -= dso.section_offsets[section];
-
-			dso.syms.insert(symbol(start, size, std::string(sym)));
-		}
-#endif
-	}
-	pclose(file);
-}
-
-static void load_dso_symbols(std::string dso_name, std::string args)
-{
-	struct dso &dso = dsos[dso_name];
-
-	std::string cmd = "nm -nSC " + args + " " + dso_name;
-
-	FILE *file = popen(cmd.c_str(), "r");
-	if (!file) {
-		perror("failed to open pipe");
-		exit(-1);
-	}
-
-	char *line = NULL;
-	size_t n = 0;
-
-	while (!feof(file)) {
-		uint64_t start, size;
-		char c;
-		char sym[1024];
-
-		if (getline(&line, &n, file) < 0)
-			break;
-		if (!line)
-			break;
-
-
-		if (sscanf(line, "%Lx %Lx %c %s", &start, &size, &c, sym) == 4) {
-			sections_t::const_iterator si =
-				dso.sections.upper_bound(section(start));
-			if (si == dso.sections.end()) {
-				printf("symbol in unknown section: %s\n", sym);
-				continue;
-			}
-
-			start -= si->offset;
-
-			dso.syms.insert(symbol(start, size, sym));
-		}
-	}
-	pclose(file);
-}
-
-static void load_dso(std::string dso_name)
-{
-	load_dso_sections(dso_name);
-	load_dso_symbols(dso_name, "-D"); /* dynamic symbols */
-	load_dso_symbols(dso_name, "");   /* regular ones */
-}
-
-void load_kallsyms(void)
-{
-	struct dso &dso = dsos["[kernel]"];
-
-	FILE *file = fopen("/proc/kallsyms", "r");
-	if (!file) {
-		perror("failed to open kallsyms");
-		exit(-1);
-	}
-
-	char *line;
-	size_t n;
-
-	while (!feof(file)) {
-		uint64_t start;
-		char c;
-		char sym[1024000];
-
-		if (getline(&line, &n, file) < 0)
-			break;
-		if (!line)
-			break;
-
-		if (sscanf(line, "%Lx %c %s", &start, &c, sym) == 3)
-			dso.syms.insert(symbol(start, 0x1000000, std::string(sym)));
-	}
-	fclose(file);
-}
-
-struct map {
-	uint64_t start;
-	uint64_t end;
-	uint64_t pgoff;
-
-	std::string dso;
-
-	map() { };
-
-	map(uint64_t ip) : end(ip) { }
-
-	map(mmap_event *mmap) {
-		start = mmap->start;
-		end = mmap->start + mmap->len;
-		pgoff = mmap->pgoff;
-
-		dso = std::string(mmap->filename);
-
-		if (dsos.find(dso) == dsos.end())
-			load_dso(dso);
-	};
-
-	bool operator < (const struct map &m) const {
-		return end < m.end;
-	};
-};
-
-typedef std::set<struct map> maps_t;
-
-static std::map<int, maps_t> maps;
-
-static std::map<int, std::string> comms;
-
-static std::map<std::string, int> hist;
-static std::multimap<int, std::string> rev_hist;
-
-static std::string resolve_comm(int pid)
-{
-	std::string comm;
-
-	std::map<int, std::string>::const_iterator ci = comms.find(pid);
-	if (ci != comms.end()) {
-		comm = ci->second;
-	} else {
-		char pid_str[30];
-
-		sprintf(pid_str, ":%d", pid);
-		comm = pid_str;
-	}
-
-	return comm;
-}
-
-static std::string resolve_user_symbol(int pid, uint64_t ip)
-{
-	std::string sym = "<unknown>";
-
-	maps_t &m = maps[pid];
-	maps_t::const_iterator mi = m.upper_bound(map(ip));
-	if (mi == m.end())
-		return sym;
-
-	ip -= mi->start + mi->pgoff;
-
-	symbols_t &s = dsos[mi->dso].syms;
-	symbols_t::const_iterator si = s.upper_bound(symbol(ip));
-
-	sym = mi->dso + ": <unknown>";
-
-	if (si == s.begin())
-		return sym;
-	si--;
-
-	if (si->start <= ip && ip < si->end)
-		sym = mi->dso + ": " + si->name;
-#if 0
-	else if (si->start <= ip)
-		sym = mi->dso + ": ?" + si->name;
-#endif
-
-	return sym;
-}
-
-static std::string resolve_kernel_symbol(uint64_t ip)
-{
-	std::string sym = "<unknown>";
-
-	symbols_t &s = dsos["[kernel]"].syms;
-	symbols_t::const_iterator si = s.upper_bound(symbol(ip));
-
-	if (si == s.begin())
-		return sym;
-	si--;
-
-	if (si->start <= ip && ip < si->end)
-		sym = si->name;
-
-	return sym;
-}
-
-static void display_help(void)
-{
-	printf(
-	"Usage: perf-report [<options>]\n"
-	" -i file   --input=<file>      # input file\n"
-	);
-
-	exit(0);
-}
-
-static void process_options(int argc, char *argv[])
-{
-	int error = 0;
-
-	for (;;) {
-		int option_index = 0;
-		/** Options for getopt */
-		static struct option long_options[] = {
-			{"input",	required_argument,	NULL, 'i'},
-			{"no-user",	no_argument,		NULL, 'u'},
-			{"no-kernel",	no_argument,		NULL, 'k'},
-			{"no-hv",	no_argument,		NULL, 'h'},
-			{NULL,		0,			NULL,  0 }
-		};
-		int c = getopt_long(argc, argv, "+:i:kuh",
-				    long_options, &option_index);
-		if (c == -1)
-			break;
-
-		switch (c) {
-		case 'i': input_name			= strdup(optarg); break;
-		case 'k': show_mask &= ~SHOW_KERNEL; break;
-		case 'u': show_mask &= ~SHOW_USER; break;
-		case 'h': show_mask &= ~SHOW_HV; break;
-		default: error = 1; break;
-		}
-	}
-
-	if (error)
-		display_help();
-}
-
-int main(int argc, char *argv[])
-{
-	unsigned long offset = 0;
-	unsigned long head = 0;
-	struct stat stat;
-	char *buf;
-	event_t *event;
-	int ret;
-	unsigned long total = 0;
-
-	page_size = getpagesize();
-
-	process_options(argc, argv);
-
-	input = open(input_name, O_RDONLY);
-	if (input < 0) {
-		perror("failed to open file");
-		exit(-1);
-	}
-
-	ret = fstat(input, &stat);
-	if (ret < 0) {
-		perror("failed to stat file");
-		exit(-1);
-	}
-
-	if (!stat.st_size) {
-		fprintf(stderr, "zero-sized file, nothing to do!\n");
-		exit(0);
-	}
-
-	load_kallsyms();
-
-remap:
-	buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
-			   MAP_SHARED, input, offset);
-	if (buf == MAP_FAILED) {
-		perror("failed to mmap file");
-		exit(-1);
-	}
-
-more:
-	event = (event_t *)(buf + head);
-
-	if (head + event->header.size >= page_size * mmap_window) {
-		unsigned long shift = page_size * (head / page_size);
-		int ret;
-
-		ret = munmap(buf, page_size * mmap_window);
-		assert(ret == 0);
-
-		offset += shift;
-		head -= shift;
-		goto remap;
-	}
-
-
-	if (!event->header.size) {
-		fprintf(stderr, "zero-sized event at file offset %ld\n", offset + head);
-		fprintf(stderr, "skipping %ld bytes of events.\n", stat.st_size - offset - head);
-		goto done;
-	}
-
-	head += event->header.size;
-
-	if (event->header.misc & PERF_EVENT_MISC_OVERFLOW) {
-		std::string comm, sym, level;
-		int show = 0;
-		char output[1024];
-
-		if (event->header.misc & PERF_EVENT_MISC_KERNEL) {
-			show |= SHOW_KERNEL;
-			level = " [k] ";
-			sym = resolve_kernel_symbol(event->ip.ip);
-		} else if (event->header.misc & PERF_EVENT_MISC_USER) {
-			show |= SHOW_USER;
-			level = " [.] ";
-			sym = resolve_user_symbol(event->ip.pid, event->ip.ip);
-		} else {
-			show |= SHOW_HV;
-			level = " [H] ";
-		}
-
-		if (show & show_mask) {
-			comm = resolve_comm(event->ip.pid);
-			snprintf(output, sizeof(output), "%16s %s %s",
-					comm.c_str(), level.c_str(), sym.c_str());
-			hist[output]++;
-		}
-
-		total++;
-
-	} else switch (event->header.type) {
-	case PERF_EVENT_MMAP:
-		maps[event->mmap.pid].insert(map(&event->mmap));
-		break;
-
-	case PERF_EVENT_COMM:
-		comms[event->comm.pid] = std::string(event->comm.comm);
-		break;
-	}
-
-	if (offset + head < stat.st_size)
-		goto more;
-
-done:
-
-	close(input);
-
-	std::map<std::string, int>::iterator hi = hist.begin();
-
-	while (hi != hist.end()) {
-		rev_hist.insert(std::pair<int, std::string>(hi->second, hi->first));
-		hist.erase(hi++);
-	}
-
-	std::multimap<int, std::string>::const_iterator ri = rev_hist.begin();
-
-	while (ri != rev_hist.end()) {
-		printf(" %5.2f %s\n", (100.0 * ri->first)/total, ri->second.c_str());
-		ri++;
-	}
-
-	return 0;
-}
-