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authorIngo Molnar <mingo@elte.hu>2012-03-12 20:46:35 +0100
committerIngo Molnar <mingo@elte.hu>2012-03-12 20:47:05 +0100
commitbea95c152dee1791dd02cbc708afbb115bb00f9a (patch)
treeaf9994c42c5fdd81ba3dadd7b812e2fa85273353 /tools/perf/util
parentf9b4eeb809c6d031cc9561cc34dd691701cb2c2a (diff)
parent24bff2dc0f77b1f186b7bdf30060caf3df191a68 (diff)
downloadop-kernel-dev-bea95c152dee1791dd02cbc708afbb115bb00f9a.zip
op-kernel-dev-bea95c152dee1791dd02cbc708afbb115bb00f9a.tar.gz
Merge branch 'perf/hw-branch-sampling' into perf/core
Merge reason: The 'perf record -b' hardware branch sampling feature is ready for upstream. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util')
-rw-r--r--tools/perf/util/event.h1
-rw-r--r--tools/perf/util/evsel.c14
-rw-r--r--tools/perf/util/header.c207
-rw-r--r--tools/perf/util/header.h2
-rw-r--r--tools/perf/util/hist.c122
-rw-r--r--tools/perf/util/hist.h11
-rw-r--r--tools/perf/util/session.c77
-rw-r--r--tools/perf/util/session.h4
-rw-r--r--tools/perf/util/sort.c287
-rw-r--r--tools/perf/util/sort.h11
-rw-r--r--tools/perf/util/symbol.h20
-rw-r--r--tools/perf/util/ui/browsers/hists.c102
12 files changed, 714 insertions, 144 deletions
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index cbdeaad..1b19728 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -81,6 +81,7 @@ struct perf_sample {
u32 raw_size;
void *raw_data;
struct ip_callchain *callchain;
+ struct branch_stack *branch_stack;
};
#define BUILD_ID_SIZE 20
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 302d49a..f421f7c 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -126,6 +126,10 @@ void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts *opts)
attr->watermark = 0;
attr->wakeup_events = 1;
}
+ if (opts->branch_stack) {
+ attr->sample_type |= PERF_SAMPLE_BRANCH_STACK;
+ attr->branch_sample_type = opts->branch_stack;
+ }
attr->mmap = track;
attr->comm = track;
@@ -576,6 +580,16 @@ int perf_event__parse_sample(const union perf_event *event, u64 type,
data->raw_data = (void *) pdata;
}
+ if (type & PERF_SAMPLE_BRANCH_STACK) {
+ u64 sz;
+
+ data->branch_stack = (struct branch_stack *)array;
+ array++; /* nr */
+
+ sz = data->branch_stack->nr * sizeof(struct branch_entry);
+ sz /= sizeof(u64);
+ array += sz;
+ }
return 0;
}
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 9f867d9..0d9b6da 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1023,6 +1023,12 @@ write_it:
return do_write_string(fd, buffer);
}
+static int write_branch_stack(int fd __used, struct perf_header *h __used,
+ struct perf_evlist *evlist __used)
+{
+ return 0;
+}
+
static void print_hostname(struct perf_header *ph, int fd, FILE *fp)
{
char *str = do_read_string(fd, ph);
@@ -1144,8 +1150,9 @@ static void print_event_desc(struct perf_header *ph, int fd, FILE *fp)
uint64_t id;
void *buf = NULL;
char *str;
- u32 nre, sz, nr, i, j, msz;
- int ret;
+ u32 nre, sz, nr, i, j;
+ ssize_t ret;
+ size_t msz;
/* number of events */
ret = read(fd, &nre, sizeof(nre));
@@ -1162,25 +1169,23 @@ static void print_event_desc(struct perf_header *ph, int fd, FILE *fp)
if (ph->needs_swap)
sz = bswap_32(sz);
- /*
- * ensure it is at least to our ABI rev
- */
- if (sz < (u32)sizeof(attr))
- goto error;
-
memset(&attr, 0, sizeof(attr));
- /* read entire region to sync up to next field */
+ /* buffer to hold on file attr struct */
buf = malloc(sz);
if (!buf)
goto error;
msz = sizeof(attr);
- if (sz < msz)
+ if (sz < (ssize_t)msz)
msz = sz;
for (i = 0 ; i < nre; i++) {
+ /*
+ * must read entire on-file attr struct to
+ * sync up with layout.
+ */
ret = read(fd, buf, sz);
if (ret != (ssize_t)sz)
goto error;
@@ -1316,6 +1321,12 @@ static void print_cpuid(struct perf_header *ph, int fd, FILE *fp)
free(str);
}
+static void print_branch_stack(struct perf_header *ph __used, int fd __used,
+ FILE *fp)
+{
+ fprintf(fp, "# contains samples with branch stack\n");
+}
+
static int __event_process_build_id(struct build_id_event *bev,
char *filename,
struct perf_session *session)
@@ -1520,6 +1531,7 @@ static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = {
FEAT_OPA(HEADER_CMDLINE, cmdline),
FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology),
FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology),
+ FEAT_OPA(HEADER_BRANCH_STACK, branch_stack),
};
struct header_print_data {
@@ -1804,35 +1816,101 @@ out_free:
return err;
}
-static int check_magic_endian(u64 *magic, struct perf_file_header *header,
- struct perf_header *ph)
+static const int attr_file_abi_sizes[] = {
+ [0] = PERF_ATTR_SIZE_VER0,
+ [1] = PERF_ATTR_SIZE_VER1,
+ 0,
+};
+
+/*
+ * In the legacy file format, the magic number is not used to encode endianness.
+ * hdr_sz was used to encode endianness. But given that hdr_sz can vary based
+ * on ABI revisions, we need to try all combinations for all endianness to
+ * detect the endianness.
+ */
+static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph)
{
- int ret;
+ uint64_t ref_size, attr_size;
+ int i;
- /* check for legacy format */
- ret = memcmp(magic, __perf_magic1, sizeof(*magic));
- if (ret == 0) {
- pr_debug("legacy perf.data format\n");
- if (!header)
- return -1;
+ for (i = 0 ; attr_file_abi_sizes[i]; i++) {
+ ref_size = attr_file_abi_sizes[i]
+ + sizeof(struct perf_file_section);
+ if (hdr_sz != ref_size) {
+ attr_size = bswap_64(hdr_sz);
+ if (attr_size != ref_size)
+ continue;
- if (header->attr_size != sizeof(struct perf_file_attr)) {
- u64 attr_size = bswap_64(header->attr_size);
+ ph->needs_swap = true;
+ }
+ pr_debug("ABI%d perf.data file detected, need_swap=%d\n",
+ i,
+ ph->needs_swap);
+ return 0;
+ }
+ /* could not determine endianness */
+ return -1;
+}
- if (attr_size != sizeof(struct perf_file_attr))
- return -1;
+#define PERF_PIPE_HDR_VER0 16
+
+static const size_t attr_pipe_abi_sizes[] = {
+ [0] = PERF_PIPE_HDR_VER0,
+ 0,
+};
+
+/*
+ * In the legacy pipe format, there is an implicit assumption that endiannesss
+ * between host recording the samples, and host parsing the samples is the
+ * same. This is not always the case given that the pipe output may always be
+ * redirected into a file and analyzed on a different machine with possibly a
+ * different endianness and perf_event ABI revsions in the perf tool itself.
+ */
+static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph)
+{
+ u64 attr_size;
+ int i;
+
+ for (i = 0 ; attr_pipe_abi_sizes[i]; i++) {
+ if (hdr_sz != attr_pipe_abi_sizes[i]) {
+ attr_size = bswap_64(hdr_sz);
+ if (attr_size != hdr_sz)
+ continue;
ph->needs_swap = true;
}
+ pr_debug("Pipe ABI%d perf.data file detected\n", i);
return 0;
}
+ return -1;
+}
+
+static int check_magic_endian(u64 magic, uint64_t hdr_sz,
+ bool is_pipe, struct perf_header *ph)
+{
+ int ret;
+
+ /* check for legacy format */
+ ret = memcmp(&magic, __perf_magic1, sizeof(magic));
+ if (ret == 0) {
+ pr_debug("legacy perf.data format\n");
+ if (is_pipe)
+ return try_all_pipe_abis(hdr_sz, ph);
+
+ return try_all_file_abis(hdr_sz, ph);
+ }
+ /*
+ * the new magic number serves two purposes:
+ * - unique number to identify actual perf.data files
+ * - encode endianness of file
+ */
- /* check magic number with same endianness */
- if (*magic == __perf_magic2)
+ /* check magic number with one endianness */
+ if (magic == __perf_magic2)
return 0;
- /* check magic number but opposite endianness */
- if (*magic != __perf_magic2_sw)
+ /* check magic number with opposite endianness */
+ if (magic != __perf_magic2_sw)
return -1;
ph->needs_swap = true;
@@ -1851,8 +1929,11 @@ int perf_file_header__read(struct perf_file_header *header,
if (ret <= 0)
return -1;
- if (check_magic_endian(&header->magic, header, ph) < 0)
+ if (check_magic_endian(header->magic,
+ header->attr_size, false, ph) < 0) {
+ pr_debug("magic/endian check failed\n");
return -1;
+ }
if (ph->needs_swap) {
mem_bswap_64(header, offsetof(struct perf_file_header,
@@ -1939,21 +2020,17 @@ static int perf_file_header__read_pipe(struct perf_pipe_file_header *header,
if (ret <= 0)
return -1;
- if (check_magic_endian(&header->magic, NULL, ph) < 0)
+ if (check_magic_endian(header->magic, header->size, true, ph) < 0) {
+ pr_debug("endian/magic failed\n");
return -1;
+ }
+
+ if (ph->needs_swap)
+ header->size = bswap_64(header->size);
if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0)
return -1;
- if (header->size != sizeof(*header)) {
- u64 size = bswap_64(header->size);
-
- if (size != sizeof(*header))
- return -1;
-
- ph->needs_swap = true;
- }
-
return 0;
}
@@ -1973,6 +2050,52 @@ static int perf_header__read_pipe(struct perf_session *session, int fd)
return 0;
}
+static int read_attr(int fd, struct perf_header *ph,
+ struct perf_file_attr *f_attr)
+{
+ struct perf_event_attr *attr = &f_attr->attr;
+ size_t sz, left;
+ size_t our_sz = sizeof(f_attr->attr);
+ int ret;
+
+ memset(f_attr, 0, sizeof(*f_attr));
+
+ /* read minimal guaranteed structure */
+ ret = readn(fd, attr, PERF_ATTR_SIZE_VER0);
+ if (ret <= 0) {
+ pr_debug("cannot read %d bytes of header attr\n",
+ PERF_ATTR_SIZE_VER0);
+ return -1;
+ }
+
+ /* on file perf_event_attr size */
+ sz = attr->size;
+
+ if (ph->needs_swap)
+ sz = bswap_32(sz);
+
+ if (sz == 0) {
+ /* assume ABI0 */
+ sz = PERF_ATTR_SIZE_VER0;
+ } else if (sz > our_sz) {
+ pr_debug("file uses a more recent and unsupported ABI"
+ " (%zu bytes extra)\n", sz - our_sz);
+ return -1;
+ }
+ /* what we have not yet read and that we know about */
+ left = sz - PERF_ATTR_SIZE_VER0;
+ if (left) {
+ void *ptr = attr;
+ ptr += PERF_ATTR_SIZE_VER0;
+
+ ret = readn(fd, ptr, left);
+ }
+ /* read perf_file_section, ids are read in caller */
+ ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids));
+
+ return ret <= 0 ? -1 : 0;
+}
+
int perf_session__read_header(struct perf_session *session, int fd)
{
struct perf_header *header = &session->header;
@@ -1988,19 +2111,17 @@ int perf_session__read_header(struct perf_session *session, int fd)
if (session->fd_pipe)
return perf_header__read_pipe(session, fd);
- if (perf_file_header__read(&f_header, header, fd) < 0) {
- pr_debug("incompatible file format\n");
+ if (perf_file_header__read(&f_header, header, fd) < 0)
return -EINVAL;
- }
- nr_attrs = f_header.attrs.size / sizeof(f_attr);
+ nr_attrs = f_header.attrs.size / f_header.attr_size;
lseek(fd, f_header.attrs.offset, SEEK_SET);
for (i = 0; i < nr_attrs; i++) {
struct perf_evsel *evsel;
off_t tmp;
- if (readn(fd, &f_attr, sizeof(f_attr)) <= 0)
+ if (read_attr(fd, header, &f_attr) < 0)
goto out_errno;
if (header->needs_swap)
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index e68f617..21a6be0 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -27,7 +27,7 @@ enum {
HEADER_EVENT_DESC,
HEADER_CPU_TOPOLOGY,
HEADER_NUMA_TOPOLOGY,
-
+ HEADER_BRANCH_STACK,
HEADER_LAST_FEATURE,
HEADER_FEAT_BITS = 256,
};
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 6f505d1..8380c3d 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -50,21 +50,25 @@ static void hists__reset_col_len(struct hists *hists)
hists__set_col_len(hists, col, 0);
}
+static void hists__set_unres_dso_col_len(struct hists *hists, int dso)
+{
+ const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
+
+ if (hists__col_len(hists, dso) < unresolved_col_width &&
+ !symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
+ !symbol_conf.dso_list)
+ hists__set_col_len(hists, dso, unresolved_col_width);
+}
+
static void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
{
+ const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
u16 len;
if (h->ms.sym)
- hists__new_col_len(hists, HISTC_SYMBOL, h->ms.sym->namelen);
- else {
- const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
-
- if (hists__col_len(hists, HISTC_DSO) < unresolved_col_width &&
- !symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
- !symbol_conf.dso_list)
- hists__set_col_len(hists, HISTC_DSO,
- unresolved_col_width);
- }
+ hists__new_col_len(hists, HISTC_SYMBOL, h->ms.sym->namelen + 4);
+ else
+ hists__set_unres_dso_col_len(hists, HISTC_DSO);
len = thread__comm_len(h->thread);
if (hists__new_col_len(hists, HISTC_COMM, len))
@@ -74,6 +78,37 @@ static void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
len = dso__name_len(h->ms.map->dso);
hists__new_col_len(hists, HISTC_DSO, len);
}
+
+ if (h->branch_info) {
+ int symlen;
+ /*
+ * +4 accounts for '[x] ' priv level info
+ * +2 account of 0x prefix on raw addresses
+ */
+ if (h->branch_info->from.sym) {
+ symlen = (int)h->branch_info->from.sym->namelen + 4;
+ hists__new_col_len(hists, HISTC_SYMBOL_FROM, symlen);
+
+ symlen = dso__name_len(h->branch_info->from.map->dso);
+ hists__new_col_len(hists, HISTC_DSO_FROM, symlen);
+ } else {
+ symlen = unresolved_col_width + 4 + 2;
+ hists__new_col_len(hists, HISTC_SYMBOL_FROM, symlen);
+ hists__set_unres_dso_col_len(hists, HISTC_DSO_FROM);
+ }
+
+ if (h->branch_info->to.sym) {
+ symlen = (int)h->branch_info->to.sym->namelen + 4;
+ hists__new_col_len(hists, HISTC_SYMBOL_TO, symlen);
+
+ symlen = dso__name_len(h->branch_info->to.map->dso);
+ hists__new_col_len(hists, HISTC_DSO_TO, symlen);
+ } else {
+ symlen = unresolved_col_width + 4 + 2;
+ hists__new_col_len(hists, HISTC_SYMBOL_TO, symlen);
+ hists__set_unres_dso_col_len(hists, HISTC_DSO_TO);
+ }
+ }
}
static void hist_entry__add_cpumode_period(struct hist_entry *he,
@@ -195,26 +230,14 @@ static u8 symbol__parent_filter(const struct symbol *parent)
return 0;
}
-struct hist_entry *__hists__add_entry(struct hists *hists,
+static struct hist_entry *add_hist_entry(struct hists *hists,
+ struct hist_entry *entry,
struct addr_location *al,
- struct symbol *sym_parent, u64 period)
+ u64 period)
{
struct rb_node **p;
struct rb_node *parent = NULL;
struct hist_entry *he;
- struct hist_entry entry = {
- .thread = al->thread,
- .ms = {
- .map = al->map,
- .sym = al->sym,
- },
- .cpu = al->cpu,
- .ip = al->addr,
- .level = al->level,
- .period = period,
- .parent = sym_parent,
- .filtered = symbol__parent_filter(sym_parent),
- };
int cmp;
pthread_mutex_lock(&hists->lock);
@@ -225,7 +248,7 @@ struct hist_entry *__hists__add_entry(struct hists *hists,
parent = *p;
he = rb_entry(parent, struct hist_entry, rb_node_in);
- cmp = hist_entry__cmp(&entry, he);
+ cmp = hist_entry__cmp(entry, he);
if (!cmp) {
he->period += period;
@@ -239,7 +262,7 @@ struct hist_entry *__hists__add_entry(struct hists *hists,
p = &(*p)->rb_right;
}
- he = hist_entry__new(&entry);
+ he = hist_entry__new(entry);
if (!he)
goto out_unlock;
@@ -252,6 +275,51 @@ out_unlock:
return he;
}
+struct hist_entry *__hists__add_branch_entry(struct hists *self,
+ struct addr_location *al,
+ struct symbol *sym_parent,
+ struct branch_info *bi,
+ u64 period)
+{
+ struct hist_entry entry = {
+ .thread = al->thread,
+ .ms = {
+ .map = bi->to.map,
+ .sym = bi->to.sym,
+ },
+ .cpu = al->cpu,
+ .ip = bi->to.addr,
+ .level = al->level,
+ .period = period,
+ .parent = sym_parent,
+ .filtered = symbol__parent_filter(sym_parent),
+ .branch_info = bi,
+ };
+
+ return add_hist_entry(self, &entry, al, period);
+}
+
+struct hist_entry *__hists__add_entry(struct hists *self,
+ struct addr_location *al,
+ struct symbol *sym_parent, u64 period)
+{
+ struct hist_entry entry = {
+ .thread = al->thread,
+ .ms = {
+ .map = al->map,
+ .sym = al->sym,
+ },
+ .cpu = al->cpu,
+ .ip = al->addr,
+ .level = al->level,
+ .period = period,
+ .parent = sym_parent,
+ .filtered = symbol__parent_filter(sym_parent),
+ };
+
+ return add_hist_entry(self, &entry, al, period);
+}
+
int64_t
hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
{
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 48e5acd..9413f3e 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -42,6 +42,11 @@ enum hist_column {
HISTC_COMM,
HISTC_PARENT,
HISTC_CPU,
+ HISTC_MISPREDICT,
+ HISTC_SYMBOL_FROM,
+ HISTC_SYMBOL_TO,
+ HISTC_DSO_FROM,
+ HISTC_DSO_TO,
HISTC_NR_COLS, /* Last entry */
};
@@ -74,6 +79,12 @@ int hist_entry__snprintf(struct hist_entry *self, char *bf, size_t size,
struct hists *hists);
void hist_entry__free(struct hist_entry *);
+struct hist_entry *__hists__add_branch_entry(struct hists *self,
+ struct addr_location *al,
+ struct symbol *sym_parent,
+ struct branch_info *bi,
+ u64 period);
+
void hists__output_resort(struct hists *self);
void hists__output_resort_threaded(struct hists *hists);
void hists__collapse_resort(struct hists *self);
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 9f833cf..002ebbf 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -24,7 +24,7 @@ static int perf_session__open(struct perf_session *self, bool force)
self->fd = STDIN_FILENO;
if (perf_session__read_header(self, self->fd) < 0)
- pr_err("incompatible file format");
+ pr_err("incompatible file format (rerun with -v to learn more)");
return 0;
}
@@ -56,7 +56,7 @@ static int perf_session__open(struct perf_session *self, bool force)
}
if (perf_session__read_header(self, self->fd) < 0) {
- pr_err("incompatible file format");
+ pr_err("incompatible file format (rerun with -v to learn more)");
goto out_close;
}
@@ -229,6 +229,64 @@ static bool symbol__match_parent_regex(struct symbol *sym)
return 0;
}
+static const u8 cpumodes[] = {
+ PERF_RECORD_MISC_USER,
+ PERF_RECORD_MISC_KERNEL,
+ PERF_RECORD_MISC_GUEST_USER,
+ PERF_RECORD_MISC_GUEST_KERNEL
+};
+#define NCPUMODES (sizeof(cpumodes)/sizeof(u8))
+
+static void ip__resolve_ams(struct machine *self, struct thread *thread,
+ struct addr_map_symbol *ams,
+ u64 ip)
+{
+ struct addr_location al;
+ size_t i;
+ u8 m;
+
+ memset(&al, 0, sizeof(al));
+
+ for (i = 0; i < NCPUMODES; i++) {
+ m = cpumodes[i];
+ /*
+ * We cannot use the header.misc hint to determine whether a
+ * branch stack address is user, kernel, guest, hypervisor.
+ * Branches may straddle the kernel/user/hypervisor boundaries.
+ * Thus, we have to try consecutively until we find a match
+ * or else, the symbol is unknown
+ */
+ thread__find_addr_location(thread, self, m, MAP__FUNCTION,
+ ip, &al, NULL);
+ if (al.sym)
+ goto found;
+ }
+found:
+ ams->addr = ip;
+ ams->al_addr = al.addr;
+ ams->sym = al.sym;
+ ams->map = al.map;
+}
+
+struct branch_info *machine__resolve_bstack(struct machine *self,
+ struct thread *thr,
+ struct branch_stack *bs)
+{
+ struct branch_info *bi;
+ unsigned int i;
+
+ bi = calloc(bs->nr, sizeof(struct branch_info));
+ if (!bi)
+ return NULL;
+
+ for (i = 0; i < bs->nr; i++) {
+ ip__resolve_ams(self, thr, &bi[i].to, bs->entries[i].to);
+ ip__resolve_ams(self, thr, &bi[i].from, bs->entries[i].from);
+ bi[i].flags = bs->entries[i].flags;
+ }
+ return bi;
+}
+
int machine__resolve_callchain(struct machine *self, struct perf_evsel *evsel,
struct thread *thread,
struct ip_callchain *chain,
@@ -697,6 +755,18 @@ static void callchain__printf(struct perf_sample *sample)
i, sample->callchain->ips[i]);
}
+static void branch_stack__printf(struct perf_sample *sample)
+{
+ uint64_t i;
+
+ printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
+
+ for (i = 0; i < sample->branch_stack->nr; i++)
+ printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n",
+ i, sample->branch_stack->entries[i].from,
+ sample->branch_stack->entries[i].to);
+}
+
static void perf_session__print_tstamp(struct perf_session *session,
union perf_event *event,
struct perf_sample *sample)
@@ -744,6 +814,9 @@ static void dump_sample(struct perf_session *session, union perf_event *event,
if (session->sample_type & PERF_SAMPLE_CALLCHAIN)
callchain__printf(sample);
+
+ if (session->sample_type & PERF_SAMPLE_BRANCH_STACK)
+ branch_stack__printf(sample);
}
static struct machine *
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index c8d9017..7a5434c 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -73,6 +73,10 @@ int perf_session__resolve_callchain(struct perf_session *self, struct perf_evsel
struct ip_callchain *chain,
struct symbol **parent);
+struct branch_info *machine__resolve_bstack(struct machine *self,
+ struct thread *thread,
+ struct branch_stack *bs);
+
bool perf_session__has_traces(struct perf_session *self, const char *msg);
void mem_bswap_64(void *src, int byte_size);
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 16da30d..88dbcf6 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -8,6 +8,7 @@ const char default_sort_order[] = "comm,dso,symbol";
const char *sort_order = default_sort_order;
int sort__need_collapse = 0;
int sort__has_parent = 0;
+int sort__branch_mode = -1; /* -1 = means not set */
enum sort_type sort__first_dimension;
@@ -94,6 +95,26 @@ static int hist_entry__comm_snprintf(struct hist_entry *self, char *bf,
return repsep_snprintf(bf, size, "%*s", width, self->thread->comm);
}
+static int64_t _sort__dso_cmp(struct map *map_l, struct map *map_r)
+{
+ struct dso *dso_l = map_l ? map_l->dso : NULL;
+ struct dso *dso_r = map_r ? map_r->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);
+}
+
struct sort_entry sort_comm = {
.se_header = "Command",
.se_cmp = sort__comm_cmp,
@@ -107,36 +128,74 @@ struct sort_entry sort_comm = {
static int64_t
sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
{
- struct dso *dso_l = left->ms.map ? left->ms.map->dso : NULL;
- struct dso *dso_r = right->ms.map ? right->ms.map->dso : NULL;
- const char *dso_name_l, *dso_name_r;
+ return _sort__dso_cmp(left->ms.map, right->ms.map);
+}
- 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;
+static int64_t _sort__sym_cmp(struct symbol *sym_l, struct symbol *sym_r,
+ u64 ip_l, u64 ip_r)
+{
+ if (!sym_l || !sym_r)
+ return cmp_null(sym_l, sym_r);
+
+ if (sym_l == sym_r)
+ return 0;
+
+ if (sym_l)
+ ip_l = sym_l->start;
+ if (sym_r)
+ ip_r = sym_r->start;
+
+ return (int64_t)(ip_r - ip_l);
+}
+
+static int _hist_entry__dso_snprintf(struct map *map, char *bf,
+ size_t size, unsigned int width)
+{
+ if (map && map->dso) {
+ const char *dso_name = !verbose ? map->dso->short_name :
+ map->dso->long_name;
+ return repsep_snprintf(bf, size, "%-*s", width, dso_name);
}
- return strcmp(dso_name_l, dso_name_r);
+ return repsep_snprintf(bf, size, "%-*s", width, "[unknown]");
}
static int hist_entry__dso_snprintf(struct hist_entry *self, char *bf,
size_t size, unsigned int width)
{
- if (self->ms.map && self->ms.map->dso) {
- const char *dso_name = !verbose ? self->ms.map->dso->short_name :
- self->ms.map->dso->long_name;
- return repsep_snprintf(bf, size, "%-*s", width, dso_name);
+ return _hist_entry__dso_snprintf(self->ms.map, bf, size, width);
+}
+
+static int _hist_entry__sym_snprintf(struct map *map, struct symbol *sym,
+ u64 ip, char level, char *bf, size_t size,
+ unsigned int width __used)
+{
+ size_t ret = 0;
+
+ if (verbose) {
+ char o = map ? dso__symtab_origin(map->dso) : '!';
+ ret += repsep_snprintf(bf, size, "%-#*llx %c ",
+ BITS_PER_LONG / 4, ip, o);
}
- return repsep_snprintf(bf, size, "%-*s", width, "[unknown]");
+ ret += repsep_snprintf(bf + ret, size - ret, "[%c] ", level);
+ if (sym)
+ ret += repsep_snprintf(bf + ret, size - ret, "%-*s",
+ width - ret,
+ sym->name);
+ else {
+ size_t len = BITS_PER_LONG / 4;
+ ret += repsep_snprintf(bf + ret, size - ret, "%-#.*llx",
+ len, ip);
+ ret += repsep_snprintf(bf + ret, size - ret, "%-*s",
+ width - ret, "");
+ }
+
+ return ret;
}
+
struct sort_entry sort_dso = {
.se_header = "Shared Object",
.se_cmp = sort__dso_cmp,
@@ -144,8 +203,14 @@ struct sort_entry sort_dso = {
.se_width_idx = HISTC_DSO,
};
-/* --sort symbol */
+static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf,
+ size_t size, unsigned int width __used)
+{
+ return _hist_entry__sym_snprintf(self->ms.map, self->ms.sym, self->ip,
+ self->level, bf, size, width);
+}
+/* --sort symbol */
static int64_t
sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
{
@@ -163,31 +228,7 @@ sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
ip_l = left->ms.sym->start;
ip_r = right->ms.sym->start;
- return (int64_t)(ip_r - ip_l);
-}
-
-static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf,
- size_t size, unsigned int width __used)
-{
- size_t ret = 0;
-
- if (verbose) {
- char o = self->ms.map ? dso__symtab_origin(self->ms.map->dso) : '!';
- ret += repsep_snprintf(bf, size, "%-#*llx %c ",
- BITS_PER_LONG / 4, self->ip, o);
- }
-
- if (!sort_dso.elide)
- ret += repsep_snprintf(bf + ret, size - ret, "[%c] ", self->level);
-
- if (self->ms.sym)
- ret += repsep_snprintf(bf + ret, size - ret, "%s",
- self->ms.sym->name);
- else
- ret += repsep_snprintf(bf + ret, size - ret, "%-#*llx",
- BITS_PER_LONG / 4, self->ip);
-
- return ret;
+ return _sort__sym_cmp(left->ms.sym, right->ms.sym, ip_l, ip_r);
}
struct sort_entry sort_sym = {
@@ -246,19 +287,155 @@ struct sort_entry sort_cpu = {
.se_width_idx = HISTC_CPU,
};
+static int64_t
+sort__dso_from_cmp(struct hist_entry *left, struct hist_entry *right)
+{
+ return _sort__dso_cmp(left->branch_info->from.map,
+ right->branch_info->from.map);
+}
+
+static int hist_entry__dso_from_snprintf(struct hist_entry *self, char *bf,
+ size_t size, unsigned int width)
+{
+ return _hist_entry__dso_snprintf(self->branch_info->from.map,
+ bf, size, width);
+}
+
+struct sort_entry sort_dso_from = {
+ .se_header = "Source Shared Object",
+ .se_cmp = sort__dso_from_cmp,
+ .se_snprintf = hist_entry__dso_from_snprintf,
+ .se_width_idx = HISTC_DSO_FROM,
+};
+
+static int64_t
+sort__dso_to_cmp(struct hist_entry *left, struct hist_entry *right)
+{
+ return _sort__dso_cmp(left->branch_info->to.map,
+ right->branch_info->to.map);
+}
+
+static int hist_entry__dso_to_snprintf(struct hist_entry *self, char *bf,
+ size_t size, unsigned int width)
+{
+ return _hist_entry__dso_snprintf(self->branch_info->to.map,
+ bf, size, width);
+}
+
+static int64_t
+sort__sym_from_cmp(struct hist_entry *left, struct hist_entry *right)
+{
+ struct addr_map_symbol *from_l = &left->branch_info->from;
+ struct addr_map_symbol *from_r = &right->branch_info->from;
+
+ if (!from_l->sym && !from_r->sym)
+ return right->level - left->level;
+
+ return _sort__sym_cmp(from_l->sym, from_r->sym, from_l->addr,
+ from_r->addr);
+}
+
+static int64_t
+sort__sym_to_cmp(struct hist_entry *left, struct hist_entry *right)
+{
+ struct addr_map_symbol *to_l = &left->branch_info->to;
+ struct addr_map_symbol *to_r = &right->branch_info->to;
+
+ if (!to_l->sym && !to_r->sym)
+ return right->level - left->level;
+
+ return _sort__sym_cmp(to_l->sym, to_r->sym, to_l->addr, to_r->addr);
+}
+
+static int hist_entry__sym_from_snprintf(struct hist_entry *self, char *bf,
+ size_t size, unsigned int width __used)
+{
+ struct addr_map_symbol *from = &self->branch_info->from;
+ return _hist_entry__sym_snprintf(from->map, from->sym, from->addr,
+ self->level, bf, size, width);
+
+}
+
+static int hist_entry__sym_to_snprintf(struct hist_entry *self, char *bf,
+ size_t size, unsigned int width __used)
+{
+ struct addr_map_symbol *to = &self->branch_info->to;
+ return _hist_entry__sym_snprintf(to->map, to->sym, to->addr,
+ self->level, bf, size, width);
+
+}
+
+struct sort_entry sort_dso_to = {
+ .se_header = "Target Shared Object",
+ .se_cmp = sort__dso_to_cmp,
+ .se_snprintf = hist_entry__dso_to_snprintf,
+ .se_width_idx = HISTC_DSO_TO,
+};
+
+struct sort_entry sort_sym_from = {
+ .se_header = "Source Symbol",
+ .se_cmp = sort__sym_from_cmp,
+ .se_snprintf = hist_entry__sym_from_snprintf,
+ .se_width_idx = HISTC_SYMBOL_FROM,
+};
+
+struct sort_entry sort_sym_to = {
+ .se_header = "Target Symbol",
+ .se_cmp = sort__sym_to_cmp,
+ .se_snprintf = hist_entry__sym_to_snprintf,
+ .se_width_idx = HISTC_SYMBOL_TO,
+};
+
+static int64_t
+sort__mispredict_cmp(struct hist_entry *left, struct hist_entry *right)
+{
+ const unsigned char mp = left->branch_info->flags.mispred !=
+ right->branch_info->flags.mispred;
+ const unsigned char p = left->branch_info->flags.predicted !=
+ right->branch_info->flags.predicted;
+
+ return mp || p;
+}
+
+static int hist_entry__mispredict_snprintf(struct hist_entry *self, char *bf,
+ size_t size, unsigned int width){
+ static const char *out = "N/A";
+
+ if (self->branch_info->flags.predicted)
+ out = "N";
+ else if (self->branch_info->flags.mispred)
+ out = "Y";
+
+ return repsep_snprintf(bf, size, "%-*s", width, out);
+}
+
+struct sort_entry sort_mispredict = {
+ .se_header = "Branch Mispredicted",
+ .se_cmp = sort__mispredict_cmp,
+ .se_snprintf = hist_entry__mispredict_snprintf,
+ .se_width_idx = HISTC_MISPREDICT,
+};
+
struct sort_dimension {
const char *name;
struct sort_entry *entry;
int taken;
};
+#define DIM(d, n, func) [d] = { .name = n, .entry = &(func) }
+
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, },
- { .name = "cpu", .entry = &sort_cpu, },
+ DIM(SORT_PID, "pid", sort_thread),
+ DIM(SORT_COMM, "comm", sort_comm),
+ DIM(SORT_DSO, "dso", sort_dso),
+ DIM(SORT_DSO_FROM, "dso_from", sort_dso_from),
+ DIM(SORT_DSO_TO, "dso_to", sort_dso_to),
+ DIM(SORT_SYM, "symbol", sort_sym),
+ DIM(SORT_SYM_TO, "symbol_from", sort_sym_from),
+ DIM(SORT_SYM_FROM, "symbol_to", sort_sym_to),
+ DIM(SORT_PARENT, "parent", sort_parent),
+ DIM(SORT_CPU, "cpu", sort_cpu),
+ DIM(SORT_MISPREDICT, "mispredict", sort_mispredict),
};
int sort_dimension__add(const char *tok)
@@ -270,7 +447,6 @@ int sort_dimension__add(const char *tok)
if (strncasecmp(tok, sd->name, strlen(tok)))
continue;
-
if (sd->entry == &sort_parent) {
int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
if (ret) {
@@ -302,6 +478,16 @@ int sort_dimension__add(const char *tok)
sort__first_dimension = SORT_PARENT;
else if (!strcmp(sd->name, "cpu"))
sort__first_dimension = SORT_CPU;
+ else if (!strcmp(sd->name, "symbol_from"))
+ sort__first_dimension = SORT_SYM_FROM;
+ else if (!strcmp(sd->name, "symbol_to"))
+ sort__first_dimension = SORT_SYM_TO;
+ else if (!strcmp(sd->name, "dso_from"))
+ sort__first_dimension = SORT_DSO_FROM;
+ else if (!strcmp(sd->name, "dso_to"))
+ sort__first_dimension = SORT_DSO_TO;
+ else if (!strcmp(sd->name, "mispredict"))
+ sort__first_dimension = SORT_MISPREDICT;
}
list_add_tail(&sd->entry->list, &hist_entry__sort_list);
@@ -309,7 +495,6 @@ int sort_dimension__add(const char *tok)
return 0;
}
-
return -ESRCH;
}
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 3f67ae3..472aa5a 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -31,11 +31,16 @@ extern const char *parent_pattern;
extern const char default_sort_order[];
extern int sort__need_collapse;
extern int sort__has_parent;
+extern int sort__branch_mode;
extern char *field_sep;
extern struct sort_entry sort_comm;
extern struct sort_entry sort_dso;
extern struct sort_entry sort_sym;
extern struct sort_entry sort_parent;
+extern struct sort_entry sort_dso_from;
+extern struct sort_entry sort_dso_to;
+extern struct sort_entry sort_sym_from;
+extern struct sort_entry sort_sym_to;
extern enum sort_type sort__first_dimension;
/**
@@ -72,6 +77,7 @@ struct hist_entry {
struct hist_entry *pair;
struct rb_root sorted_chain;
};
+ struct branch_info *branch_info;
struct callchain_root callchain[0];
};
@@ -82,6 +88,11 @@ enum sort_type {
SORT_SYM,
SORT_PARENT,
SORT_CPU,
+ SORT_DSO_FROM,
+ SORT_DSO_TO,
+ SORT_SYM_FROM,
+ SORT_SYM_TO,
+ SORT_MISPREDICT,
};
/*
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 2a683d4..ac49ef2 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -5,6 +5,7 @@
#include <stdbool.h>
#include <stdint.h>
#include "map.h"
+#include "../perf.h"
#include <linux/list.h>
#include <linux/rbtree.h>
#include <stdio.h>
@@ -96,7 +97,11 @@ struct symbol_conf {
*col_width_list_str;
struct strlist *dso_list,
*comm_list,
- *sym_list;
+ *sym_list,
+ *dso_from_list,
+ *dso_to_list,
+ *sym_from_list,
+ *sym_to_list;
const char *symfs;
};
@@ -120,6 +125,19 @@ struct map_symbol {
bool has_children;
};
+struct addr_map_symbol {
+ struct map *map;
+ struct symbol *sym;
+ u64 addr;
+ u64 al_addr;
+};
+
+struct branch_info {
+ struct addr_map_symbol from;
+ struct addr_map_symbol to;
+ struct branch_flags flags;
+};
+
struct addr_location {
struct thread *thread;
struct map *map;
diff --git a/tools/perf/util/ui/browsers/hists.c b/tools/perf/util/ui/browsers/hists.c
index bfba049..de8ece8 100644
--- a/tools/perf/util/ui/browsers/hists.c
+++ b/tools/perf/util/ui/browsers/hists.c
@@ -805,8 +805,11 @@ static struct hist_browser *hist_browser__new(struct hists *hists)
self->hists = hists;
self->b.refresh = hist_browser__refresh;
self->b.seek = ui_browser__hists_seek;
- self->b.use_navkeypressed = true,
- self->has_symbols = sort_sym.list.next != NULL;
+ self->b.use_navkeypressed = true;
+ if (sort__branch_mode == 1)
+ self->has_symbols = sort_sym_from.list.next != NULL;
+ else
+ self->has_symbols = sort_sym.list.next != NULL;
}
return self;
@@ -853,6 +856,16 @@ static int hists__browser_title(struct hists *self, char *bf, size_t size,
return printed;
}
+static inline void free_popup_options(char **options, int n)
+{
+ int i;
+
+ for (i = 0; i < n; ++i) {
+ free(options[i]);
+ options[i] = NULL;
+ }
+}
+
static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
const char *helpline, const char *ev_name,
bool left_exits,
@@ -861,7 +874,10 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
{
struct hists *self = &evsel->hists;
struct hist_browser *browser = hist_browser__new(self);
+ struct branch_info *bi;
struct pstack *fstack;
+ char *options[16];
+ int nr_options = 0;
int key = -1;
if (browser == NULL)
@@ -873,13 +889,16 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
ui_helpline__push(helpline);
+ memset(options, 0, sizeof(options));
+
while (1) {
const struct thread *thread = NULL;
const struct dso *dso = NULL;
- char *options[16];
- int nr_options = 0, choice = 0, i,
+ int choice = 0,
annotate = -2, zoom_dso = -2, zoom_thread = -2,
- browse_map = -2;
+ annotate_f = -2, annotate_t = -2, browse_map = -2;
+
+ nr_options = 0;
key = hist_browser__run(browser, ev_name, timer, arg, delay_secs);
@@ -887,7 +906,6 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
thread = hist_browser__selected_thread(browser);
dso = browser->selection->map ? browser->selection->map->dso : NULL;
}
-
switch (key) {
case K_TAB:
case K_UNTAB:
@@ -902,7 +920,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
if (!browser->has_symbols) {
ui_browser__warning(&browser->b, delay_secs * 2,
"Annotation is only available for symbolic views, "
- "include \"sym\" in --sort to use it.");
+ "include \"sym*\" in --sort to use it.");
continue;
}
@@ -972,12 +990,34 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
if (!browser->has_symbols)
goto add_exit_option;
- if (browser->selection != NULL &&
- browser->selection->sym != NULL &&
- !browser->selection->map->dso->annotate_warned &&
- asprintf(&options[nr_options], "Annotate %s",
- browser->selection->sym->name) > 0)
- annotate = nr_options++;
+ if (sort__branch_mode == 1) {
+ bi = browser->he_selection->branch_info;
+ if (browser->selection != NULL &&
+ bi &&
+ bi->from.sym != NULL &&
+ !bi->from.map->dso->annotate_warned &&
+ asprintf(&options[nr_options], "Annotate %s",
+ bi->from.sym->name) > 0)
+ annotate_f = nr_options++;
+
+ if (browser->selection != NULL &&
+ bi &&
+ bi->to.sym != NULL &&
+ !bi->to.map->dso->annotate_warned &&
+ (bi->to.sym != bi->from.sym ||
+ bi->to.map->dso != bi->from.map->dso) &&
+ asprintf(&options[nr_options], "Annotate %s",
+ bi->to.sym->name) > 0)
+ annotate_t = nr_options++;
+ } else {
+
+ if (browser->selection != NULL &&
+ browser->selection->sym != NULL &&
+ !browser->selection->map->dso->annotate_warned &&
+ asprintf(&options[nr_options], "Annotate %s",
+ browser->selection->sym->name) > 0)
+ annotate = nr_options++;
+ }
if (thread != NULL &&
asprintf(&options[nr_options], "Zoom %s %s(%d) thread",
@@ -998,25 +1038,39 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
browse_map = nr_options++;
add_exit_option:
options[nr_options++] = (char *)"Exit";
-
+retry_popup_menu:
choice = ui__popup_menu(nr_options, options);
- for (i = 0; i < nr_options - 1; ++i)
- free(options[i]);
-
if (choice == nr_options - 1)
break;
- if (choice == -1)
+ if (choice == -1) {
+ free_popup_options(options, nr_options - 1);
continue;
+ }
- if (choice == annotate) {
+ if (choice == annotate || choice == annotate_t || choice == annotate_f) {
struct hist_entry *he;
int err;
do_annotate:
he = hist_browser__selected_entry(browser);
if (he == NULL)
continue;
+
+ /*
+ * we stash the branch_info symbol + map into the
+ * the ms so we don't have to rewrite all the annotation
+ * code to use branch_info.
+ * in branch mode, the ms struct is not used
+ */
+ if (choice == annotate_f) {
+ he->ms.sym = he->branch_info->from.sym;
+ he->ms.map = he->branch_info->from.map;
+ } else if (choice == annotate_t) {
+ he->ms.sym = he->branch_info->to.sym;
+ he->ms.map = he->branch_info->to.map;
+ }
+
/*
* Don't let this be freed, say, by hists__decay_entry.
*/
@@ -1024,9 +1078,18 @@ do_annotate:
err = hist_entry__tui_annotate(he, evsel->idx,
timer, arg, delay_secs);
he->used = false;
+ /*
+ * offer option to annotate the other branch source or target
+ * (if they exists) when returning from annotate
+ */
+ if ((err == 'q' || err == CTRL('c'))
+ && annotate_t != -2 && annotate_f != -2)
+ goto retry_popup_menu;
+
ui_browser__update_nr_entries(&browser->b, browser->hists->nr_entries);
if (err)
ui_browser__handle_resize(&browser->b);
+
} else if (choice == browse_map)
map__browse(browser->selection->map);
else if (choice == zoom_dso) {
@@ -1072,6 +1135,7 @@ out_free_stack:
pstack__delete(fstack);
out:
hist_browser__delete(browser);
+ free_popup_options(options, nr_options - 1);
return key;
}
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