lkml.org 
[lkml]   [2012]   [Feb]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v5 11/18] perf: add code to support PERF_SAMPLE_BRANCH_STACK
Em Thu, Feb 02, 2012 at 01:54:41PM +0100, Stephane Eranian escreveu:
> 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

Some comments below, mostly minor stuff, looks great work, thanks!

- Arnaldo

> 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)

This is not related to this, would be better to come in a separate patch
with a proper explanation.

> 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 dcfefab..6b15cda 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);

Consistency here: use sizeof(u64), or better yet: sizeof(sz);

> + 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);

What is the rationale here? Adding a comment will help

> + 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

Really minor nit, but start with: "In branch mode"

> + * 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 552c1c5..5ce3f31 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

ditto

> + * 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

^ comment reflow artifact?

> + * 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 c8d9017..accb5dc 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,

We use double _ on the front with the same rationale as in the kernel,
i.e. we we do a little bit less than what the non __ prefixed function
does (locking, etc).

> + 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 2a683d4..5866ce6 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>
> @@ -120,6 +121,18 @@ 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;
> --
> 1.7.4.1


\
 
 \ /
  Last update: 2012-02-06 19:09    [from the cache]
©2003-2011 Jasper Spaans