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Subject[PATCH v4 11/18] perf: add code to support PERF_SAMPLE_BRANCH_STACK
Date
From: Roberto Agostino Vitillo <ravitillo@lbl.gov>

This patch adds:
- ability to parse samples with PERF_SAMPLE_BRANCH_STACK
- sort on branches
- build histograms on branches

Signed-off-by: Roberto Agostino Vitillo <ravitillo@lbl.gov>
Signed-off-by: Stephane Eranian <eranian@google.com>
---
tools/perf/perf.h | 17 ++
tools/perf/util/annotate.c | 2 +-
tools/perf/util/event.h | 1 +
tools/perf/util/evsel.c | 10 ++
tools/perf/util/hist.c | 93 +++++++++---
tools/perf/util/hist.h | 7 +
tools/perf/util/session.c | 72 +++++++++
tools/perf/util/session.h | 4 +
tools/perf/util/sort.c | 362 +++++++++++++++++++++++++++++++++-----------
tools/perf/util/sort.h | 5 +
tools/perf/util/symbol.h | 13 ++
11 files changed, 475 insertions(+), 111 deletions(-)
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 92af168..8b4d25d 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -180,6 +180,23 @@ struct ip_callchain {
u64 ips[0];
};

+struct branch_flags {
+ u64 mispred:1;
+ u64 predicted:1;
+ u64 reserved:62;
+};
+
+struct branch_entry {
+ u64 from;
+ u64 to;
+ struct branch_flags flags;
+};
+
+struct branch_stack {
+ u64 nr;
+ struct branch_entry entries[0];
+};
+
extern bool perf_host, perf_guest;
extern const char perf_version_string[];

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 011ed26..8248d80 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -64,7 +64,7 @@ int symbol__inc_addr_samples(struct symbol *sym, struct map *map,

pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));

- if (addr >= sym->end)
+ if (addr >= sym->end || addr < sym->start)
return 0;

offset = addr - sym->start;
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 667f3b7..472fc8c 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -575,6 +575,16 @@ 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(uint64_t);
+ array += sz;
+ }
return 0;
}

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 6f505d1..66f9936 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -54,9 +54,11 @@ static void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
{
u16 len;

- if (h->ms.sym)
- hists__new_col_len(hists, HISTC_SYMBOL, h->ms.sym->namelen);
- else {
+ if (h->ms.sym) {
+ int n = (int)h->ms.sym->namelen + 4;
+ int symlen = max(n, BITS_PER_LONG / 4 + 6);
+ hists__new_col_len(hists, HISTC_SYMBOL, symlen);
+ } else {
const unsigned int unresolved_col_width = BITS_PER_LONG / 4;

if (hists__col_len(hists, HISTC_DSO) < unresolved_col_width &&
@@ -195,26 +197,14 @@ 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 +215,7 @@ 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 +229,7 @@ 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 +242,69 @@ struct hist_entry *__hists__add_entry(struct hists *hists,
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,
+ };
+ struct hist_entry *he;
+
+ he = add_hist_entry(self, &entry, al, period);
+ if (!he)
+ return NULL;
+
+ /*
+ * in branch mode, we do not display al->sym, al->addr
+ * but instead what is in branch_info. The addresses and
+ * symbols there may need wider columns, so make sure they
+ * are taken into account.
+ *
+ * hists__calc_col_len() tracks the max column width, so
+ * we need to call it for both the from and to addresses
+ */
+ entry.ip = bi->from.addr;
+ entry.ms.map = bi->from.map;
+ entry.ms.sym = bi->from.sym;
+ hists__calc_col_len(self, &entry);
+
+ return he;
+}
+
+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 0d48613..801a04e 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -41,6 +41,7 @@ enum hist_column {
HISTC_COMM,
HISTC_PARENT,
HISTC_CPU,
+ HISTC_MISPREDICT,
HISTC_NR_COLS, /* Last entry */
};

@@ -73,6 +74,12 @@ 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 b5ca255..6643224 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -229,6 +229,63 @@ 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->sym = al.sym;
+ ams->map = al.map;
+}
+
+struct branch_info *perf_session__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 +754,18 @@ 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 +813,9 @@ 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 37bc383..f407338 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 *perf_session__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..1531989 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;
+bool sort__branch_mode;

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)
{
@@ -154,40 +219,10 @@ sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
if (!left->ms.sym && !right->ms.sym)
return right->level - left->level;

- if (!left->ms.sym || !right->ms.sym)
- return cmp_null(left->ms.sym, right->ms.sym);
-
- if (left->ms.sym == right->ms.sym)
- return 0;
-
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 = {
@@ -246,6 +281,135 @@ 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,
+};
+
+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,
+};
+
+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,
+};
+
+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,
+};
+
+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;
@@ -253,14 +417,59 @@ struct sort_dimension {
};

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, },
+ { .name = "pid", .entry = &sort_thread, },
+ { .name = "comm", .entry = &sort_comm, },
+ { .name = "dso", .entry = &sort_dso, },
+ { .name = "dso_from", .entry = &sort_dso_from, .taken = true },
+ { .name = "dso_to", .entry = &sort_dso_to, .taken = true },
+ { .name = "symbol", .entry = &sort_sym, },
+ { .name = "symbol_from",.entry = &sort_sym_from, .taken = true },
+ { .name = "symbol_to", .entry = &sort_sym_to, .taken = true },
+ { .name = "parent", .entry = &sort_parent, },
+ { .name = "cpu", .entry = &sort_cpu, },
+ { .name = "mispredict", .entry = &sort_mispredict, },
};

+static int _sort_dimension__add(struct sort_dimension *sd)
+{
+ if (sd->entry->se_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));
+ pr_err("Invalid regex: %s\n%s", parent_pattern, err);
+ return -EINVAL;
+ }
+ 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;
+ else if (!strcmp(sd->name, "cpu"))
+ sort__first_dimension = SORT_CPU;
+ else if (!strcmp(sd->name, "mispredict"))
+ sort__first_dimension = SORT_MISPREDICTED;
+ }
+
+ list_add_tail(&sd->entry->list, &hist_entry__sort_list);
+ sd->taken = 1;
+
+ return 0;
+}
+
int sort_dimension__add(const char *tok)
{
unsigned int i;
@@ -271,48 +480,21 @@ 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) {
- char err[BUFSIZ];
-
- regerror(ret, &parent_regex, err, sizeof(err));
- pr_err("Invalid regex: %s\n%s", parent_pattern, err);
- return -EINVAL;
- }
- sort__has_parent = 1;
- }
-
if (sd->taken)
return 0;

- if (sd->entry->se_collapse)
- sort__need_collapse = 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;
- else if (!strcmp(sd->name, "cpu"))
- sort__first_dimension = SORT_CPU;
- }
-
- list_add_tail(&sd->entry->list, &hist_entry__sort_list);
- sd->taken = 1;

- return 0;
+ if (sort__branch_mode && (sd->entry == &sort_dso ||
+ sd->entry == &sort_sym)){
+ int err = _sort_dimension__add(sd + 1);
+ return err ?: _sort_dimension__add(sd + 2);
+ } else if (sd->entry == &sort_mispredict && !sort__branch_mode)
+ break;
+ else
+ return _sort_dimension__add(sd);
}
-
return -ESRCH;
}
-
void setup_sorting(const char * const usagestr[], const struct option *opts)
{
char *tmp, *tok, *str = strdup(sort_order);
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 3f67ae3..effcae1 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -31,11 +31,14 @@ extern const char *parent_pattern;
extern const char default_sort_order[];
extern int sort__need_collapse;
extern int sort__has_parent;
+extern bool 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_lbr_dso;
+extern struct sort_entry sort_lbr_sym;
extern enum sort_type sort__first_dimension;

/**
@@ -72,6 +75,7 @@ struct hist_entry {
struct hist_entry *pair;
struct rb_root sorted_chain;
};
+ struct branch_info *branch_info;
struct callchain_root callchain[0];
};

@@ -82,6 +86,7 @@ enum sort_type {
SORT_SYM,
SORT_PARENT,
SORT_CPU,
+ SORT_MISPREDICTED,
};

/*
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 123c2e1..6297e88 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>
@@ -119,6 +120,18 @@ struct map_symbol {
bool has_children;
};

+struct addr_map_symbol {
+ struct map *map;
+ struct symbol *sym;
+ u64 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;
--
1.7.1


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