linux/tools/perf/util/sort.c
Arnaldo Carvalho de Melo c351c28161 perf diff: Use perf_session__fprintf_hists just like 'perf record'
That means that almost everything you can do with 'perf report'
can be done with 'perf diff', for instance:

$ perf record -f find / > /dev/null
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.062 MB perf.data (~2699
samples) ] $ perf record -f find / > /dev/null
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.062 MB perf.data (~2687
samples) ] perf diff | head -8
     9.02%     +1.00%     find  libc-2.10.1.so               [.] _IO_vfprintf_internal
     2.91%     -1.00%     find  [kernel]                     [k] __kmalloc
     2.85%     -1.00%     find  [kernel]                     [k] ext4_htree_store_dirent
     1.99%     -1.00%     find  [kernel]                     [k] _atomic_dec_and_lock
     2.44%                find  [kernel]                     [k] half_md4_transform
$

So if you want to zoom into libc:

$ perf diff --dsos libc-2.10.1.so | head -8
    37.34%                find  [.] _IO_vfprintf_internal
    10.34%                find  [.] __GI_memmove
     8.25%     +2.00%     find  [.] _int_malloc
     5.07%     -1.00%     find  [.] __GI_mempcpy
     7.62%     +2.00%     find  [.] _int_free
$

And if there were multiple commands using libc, it is also
possible to aggregate them all by using --sort symbol:

$ perf diff --dsos libc-2.10.1.so --sort symbol | head -8
    37.34%             [.] _IO_vfprintf_internal
    10.34%             [.] __GI_memmove
     8.25%     +2.00%  [.] _int_malloc
     5.07%     -1.00%  [.] __GI_mempcpy
     7.62%     +2.00%  [.] _int_free
$

The displacement column now is off by default, to use it:

perf diff -m --dsos libc-2.10.1.so --sort symbol | head -8
    37.34%                   [.] _IO_vfprintf_internal
    10.34%                   [.] __GI_memmove
     8.25%     +2.00%        [.] _int_malloc
     5.07%     -1.00%    +2  [.] __GI_mempcpy
     7.62%     +2.00%    -1  [.] _int_free
$

Using -t/--field-separator can be used for scripting:

$ perf diff -t, -m --dsos libc-2.10.1.so --sort symbol | head -8
37.34, , ,[.] _IO_vfprintf_internal
10.34, , ,[.] __GI_memmove
8.25,+2.00%, ,[.] _int_malloc
5.07,-1.00%,  +2,[.] __GI_mempcpy
7.62,+2.00%,  -1,[.] _int_free
6.99,+1.00%,  -1,[.] _IO_new_file_xsputn
1.89,-2.00%,  +4,[.] __readdir64
$

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1260978567-550-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-16 16:53:37 +01:00

317 lines
6.7 KiB
C

#include "sort.h"
regex_t parent_regex;
char default_parent_pattern[] = "^sys_|^do_page_fault";
char *parent_pattern = default_parent_pattern;
char default_sort_order[] = "comm,dso,symbol";
char *sort_order = default_sort_order;
int sort__need_collapse = 0;
int sort__has_parent = 0;
enum sort_type sort__first_dimension;
unsigned int dsos__col_width;
unsigned int comms__col_width;
unsigned int threads__col_width;
static unsigned int parent_symbol__col_width;
char * field_sep;
LIST_HEAD(hist_entry__sort_list);
struct sort_entry sort_thread = {
.header = "Command: Pid",
.cmp = sort__thread_cmp,
.print = sort__thread_print,
.width = &threads__col_width,
};
struct sort_entry sort_comm = {
.header = "Command",
.cmp = sort__comm_cmp,
.collapse = sort__comm_collapse,
.print = sort__comm_print,
.width = &comms__col_width,
};
struct sort_entry sort_dso = {
.header = "Shared Object",
.cmp = sort__dso_cmp,
.print = sort__dso_print,
.width = &dsos__col_width,
};
struct sort_entry sort_sym = {
.header = "Symbol",
.cmp = sort__sym_cmp,
.print = sort__sym_print,
};
struct sort_entry sort_parent = {
.header = "Parent symbol",
.cmp = sort__parent_cmp,
.print = sort__parent_print,
.width = &parent_symbol__col_width,
};
struct sort_dimension {
const char *name;
struct sort_entry *entry;
int taken;
};
static struct sort_dimension sort_dimensions[] = {
{ .name = "pid", .entry = &sort_thread, },
{ .name = "comm", .entry = &sort_comm, },
{ .name = "dso", .entry = &sort_dso, },
{ .name = "symbol", .entry = &sort_sym, },
{ .name = "parent", .entry = &sort_parent, },
};
int64_t cmp_null(void *l, void *r)
{
if (!l && !r)
return 0;
else if (!l)
return -1;
else
return 1;
}
/* --sort pid */
int64_t
sort__thread_cmp(struct hist_entry *left, struct hist_entry *right)
{
return right->thread->pid - left->thread->pid;
}
int repsep_fprintf(FILE *fp, const char *fmt, ...)
{
int n;
va_list ap;
va_start(ap, fmt);
if (!field_sep)
n = vfprintf(fp, fmt, ap);
else {
char *bf = NULL;
n = vasprintf(&bf, fmt, ap);
if (n > 0) {
char *sep = bf;
while (1) {
sep = strchr(sep, *field_sep);
if (sep == NULL)
break;
*sep = '.';
}
}
fputs(bf, fp);
free(bf);
}
va_end(ap);
return n;
}
size_t
sort__thread_print(FILE *fp, struct hist_entry *self, unsigned int width)
{
return repsep_fprintf(fp, "%*s:%5d", width - 6,
self->thread->comm ?: "", self->thread->pid);
}
size_t
sort__comm_print(FILE *fp, struct hist_entry *self, unsigned int width)
{
return repsep_fprintf(fp, "%*s", width, self->thread->comm);
}
/* --sort dso */
int64_t
sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
{
struct dso *dso_l = left->map ? left->map->dso : NULL;
struct dso *dso_r = right->map ? right->map->dso : NULL;
const char *dso_name_l, *dso_name_r;
if (!dso_l || !dso_r)
return cmp_null(dso_l, dso_r);
if (verbose) {
dso_name_l = dso_l->long_name;
dso_name_r = dso_r->long_name;
} else {
dso_name_l = dso_l->short_name;
dso_name_r = dso_r->short_name;
}
return strcmp(dso_name_l, dso_name_r);
}
size_t
sort__dso_print(FILE *fp, struct hist_entry *self, unsigned int width)
{
if (self->map && self->map->dso) {
const char *dso_name = !verbose ? self->map->dso->short_name :
self->map->dso->long_name;
return repsep_fprintf(fp, "%-*s", width, dso_name);
}
return repsep_fprintf(fp, "%*llx", width, (u64)self->ip);
}
/* --sort symbol */
int64_t
sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
{
u64 ip_l, ip_r;
if (left->sym == right->sym)
return 0;
ip_l = left->sym ? left->sym->start : left->ip;
ip_r = right->sym ? right->sym->start : right->ip;
return (int64_t)(ip_r - ip_l);
}
size_t
sort__sym_print(FILE *fp, struct hist_entry *self, unsigned int width __used)
{
size_t ret = 0;
if (verbose) {
char o = self->map ? dso__symtab_origin(self->map->dso) : '!';
ret += repsep_fprintf(fp, "%#018llx %c ", (u64)self->ip, o);
}
ret += repsep_fprintf(fp, "[%c] ", self->level);
if (self->sym)
ret += repsep_fprintf(fp, "%s", self->sym->name);
else
ret += repsep_fprintf(fp, "%#016llx", (u64)self->ip);
return ret;
}
/* --sort comm */
int64_t
sort__comm_cmp(struct hist_entry *left, struct hist_entry *right)
{
return right->thread->pid - left->thread->pid;
}
int64_t
sort__comm_collapse(struct hist_entry *left, struct hist_entry *right)
{
char *comm_l = left->thread->comm;
char *comm_r = right->thread->comm;
if (!comm_l || !comm_r)
return cmp_null(comm_l, comm_r);
return strcmp(comm_l, comm_r);
}
/* --sort parent */
int64_t
sort__parent_cmp(struct hist_entry *left, struct hist_entry *right)
{
struct symbol *sym_l = left->parent;
struct symbol *sym_r = right->parent;
if (!sym_l || !sym_r)
return cmp_null(sym_l, sym_r);
return strcmp(sym_l->name, sym_r->name);
}
size_t
sort__parent_print(FILE *fp, struct hist_entry *self, unsigned int width)
{
return repsep_fprintf(fp, "%-*s", width,
self->parent ? self->parent->name : "[other]");
}
int sort_dimension__add(const char *tok)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(sort_dimensions); i++) {
struct sort_dimension *sd = &sort_dimensions[i];
if (sd->taken)
continue;
if (strncasecmp(tok, sd->name, strlen(tok)))
continue;
if (sd->entry->collapse)
sort__need_collapse = 1;
if (sd->entry == &sort_parent) {
int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
if (ret) {
char err[BUFSIZ];
regerror(ret, &parent_regex, err, sizeof(err));
fprintf(stderr, "Invalid regex: %s\n%s",
parent_pattern, err);
exit(-1);
}
sort__has_parent = 1;
}
if (list_empty(&hist_entry__sort_list)) {
if (!strcmp(sd->name, "pid"))
sort__first_dimension = SORT_PID;
else if (!strcmp(sd->name, "comm"))
sort__first_dimension = SORT_COMM;
else if (!strcmp(sd->name, "dso"))
sort__first_dimension = SORT_DSO;
else if (!strcmp(sd->name, "symbol"))
sort__first_dimension = SORT_SYM;
else if (!strcmp(sd->name, "parent"))
sort__first_dimension = SORT_PARENT;
}
list_add_tail(&sd->entry->list, &hist_entry__sort_list);
sd->taken = 1;
return 0;
}
return -ESRCH;
}
void setup_sorting(const char * const usagestr[], const struct option *opts)
{
char *tmp, *tok, *str = strdup(sort_order);
for (tok = strtok_r(str, ", ", &tmp);
tok; tok = strtok_r(NULL, ", ", &tmp)) {
if (sort_dimension__add(tok) < 0) {
error("Unknown --sort key: `%s'", tok);
usage_with_options(usagestr, opts);
}
}
free(str);
}
void sort_entry__setup_elide(struct sort_entry *self, struct strlist *list,
const char *list_name, FILE *fp)
{
if (list && strlist__nr_entries(list) == 1) {
if (fp != NULL)
fprintf(fp, "# %s: %s\n", list_name,
strlist__entry(list, 0)->s);
self->elide = true;
}
}