+++ /dev/null
-#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, §ion, 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;
-}
-
projects / platform / kernel / linux-3.10.git / commitdiff