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Commit fd4242bb authored by Ingo Molnar's avatar Ingo Molnar
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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: default avatarPeter 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: default avatarIngo Molnar <mingo@elte.hu>
parent 8fa66bdc
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Showing with 0 additions and 515 deletions
Documentation/perf_counter/perf-report.cc deleted 100644 → 0
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#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;
}
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