perf sort: Make column width code per hists instance

They were globals, and since we support multiple hists and sessions
at the same time, it doesn't make sense to calculate those values
considereing all symbols in all sessions.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/event.c

@@ -340,30 +340,29 @@ int event__synthesize_kernel_mmap(event__handler_t process,
 	return process(&ev, session);
 }
 
-static void thread__comm_adjust(struct thread *self)
+static void thread__comm_adjust(struct thread *self, struct hists *hists)
 {
 	char *comm = self->comm;
 
 	if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
 	    (!symbol_conf.comm_list ||
 	     strlist__has_entry(symbol_conf.comm_list, comm))) {
-		unsigned int slen = strlen(comm);
+		u16 slen = strlen(comm);
 
-		if (slen > comms__col_width) {
-			comms__col_width = slen;
-			threads__col_width = slen + 6;
-		}
+		if (hists__new_col_len(hists, HISTC_COMM, slen))
+			hists__set_col_len(hists, HISTC_THREAD, slen + 6);
 	}
 }
 
-static int thread__set_comm_adjust(struct thread *self, const char *comm)
+static int thread__set_comm_adjust(struct thread *self, const char *comm,
+				   struct hists *hists)
 {
 	int ret = thread__set_comm(self, comm);
 
 	if (ret)
 		return ret;
 
-	thread__comm_adjust(self);
+	thread__comm_adjust(self, hists);
 
 	return 0;
 }
@@ -374,7 +373,8 @@ int event__process_comm(event_t *self, struct perf_session *session)
 
 	dump_printf(": %s:%d\n", self->comm.comm, self->comm.tid);
 
-	if (thread == NULL || thread__set_comm_adjust(thread, self->comm.comm)) {
+	if (thread == NULL || thread__set_comm_adjust(thread, self->comm.comm,
+						      &session->hists)) {
 		dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
 		return -1;
 	}
@@ -641,16 +641,13 @@ void thread__find_addr_location(struct thread *self,
 		al->sym = NULL;
 }
 
-static void dso__calc_col_width(struct dso *self)
+static void dso__calc_col_width(struct dso *self, struct hists *hists)
 {
 	if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
 	    (!symbol_conf.dso_list ||
 	     strlist__has_entry(symbol_conf.dso_list, self->name))) {
-		u16 slen = self->short_name_len;
-		if (verbose)
-			slen = self->long_name_len;
-		if (dsos__col_width < slen)
-			dsos__col_width = slen;
+		u16 slen = dso__name_len(self);
+		hists__new_col_len(hists, HISTC_DSO, slen);
 	}
 
 	self->slen_calculated = 1;
@@ -729,16 +726,17 @@ int event__preprocess_sample(const event_t *self, struct perf_session *session,
 		 * sampled.
 		 */
 		if (!sort_dso.elide && !al->map->dso->slen_calculated)
-			dso__calc_col_width(al->map->dso);
+			dso__calc_col_width(al->map->dso, &session->hists);
 
 		al->sym = map__find_symbol(al->map, al->addr, filter);
 	} else {
 		const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
 
-		if (dsos__col_width < unresolved_col_width &&
+		if (hists__col_len(&session->hists, HISTC_DSO) < unresolved_col_width &&
 		    !symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
 		    !symbol_conf.dso_list)
-			dsos__col_width = unresolved_col_width;
+			hists__set_col_len(&session->hists, HISTC_DSO,
+					   unresolved_col_width);
 	}
 
 	if (symbol_conf.sym_list && al->sym &&

tools/perf/util/hist.c

@@ -16,6 +16,50 @@ struct callchain_param	callchain_param = {
 	.min_percent = 0.5
 };
 
+u16 hists__col_len(struct hists *self, enum hist_column col)
+{
+	return self->col_len[col];
+}
+
+void hists__set_col_len(struct hists *self, enum hist_column col, u16 len)
+{
+	self->col_len[col] = len;
+}
+
+bool hists__new_col_len(struct hists *self, enum hist_column col, u16 len)
+{
+	if (len > hists__col_len(self, col)) {
+		hists__set_col_len(self, col, len);
+		return true;
+	}
+	return false;
+}
+
+static void hists__reset_col_len(struct hists *self)
+{
+	enum hist_column col;
+
+	for (col = 0; col < HISTC_NR_COLS; ++col)
+		hists__set_col_len(self, col, 0);
+}
+
+static void hists__calc_col_len(struct hists *self, struct hist_entry *h)
+{
+	u16 len;
+
+	if (h->ms.sym)
+		hists__new_col_len(self, HISTC_SYMBOL, h->ms.sym->namelen);
+
+	len = thread__comm_len(h->thread);
+	if (hists__new_col_len(self, HISTC_COMM, len))
+		hists__set_col_len(self, HISTC_THREAD, len + 6);
+
+	if (h->ms.map) {
+		len = dso__name_len(h->ms.map->dso);
+		hists__new_col_len(self, HISTC_DSO, len);
+	}
+}
+
 static void hist_entry__add_cpumode_period(struct hist_entry *self,
 					   unsigned int cpumode, u64 period)
 {
@@ -56,13 +100,12 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template)
 	return self;
 }
 
-static void hists__inc_nr_entries(struct hists *self, struct hist_entry *entry)
+static void hists__inc_nr_entries(struct hists *self, struct hist_entry *h)
 {
-	if (entry->filtered)
-		return;
-	if (entry->ms.sym && self->max_sym_namelen < entry->ms.sym->namelen)
-		self->max_sym_namelen = entry->ms.sym->namelen;
-	++self->nr_entries;
+	if (!h->filtered) {
+		hists__calc_col_len(self, h);
+		++self->nr_entries;
+	}
 }
 
 static u8 symbol__parent_filter(const struct symbol *parent)
@@ -208,7 +251,7 @@ void hists__collapse_resort(struct hists *self)
 	tmp = RB_ROOT;
 	next = rb_first(&self->entries);
 	self->nr_entries = 0;
-	self->max_sym_namelen = 0;
+	hists__reset_col_len(self);
 
 	while (next) {
 		n = rb_entry(next, struct hist_entry, rb_node);
@@ -265,7 +308,7 @@ void hists__output_resort(struct hists *self)
 	next = rb_first(&self->entries);
 
 	self->nr_entries = 0;
-	self->max_sym_namelen = 0;
+	hists__reset_col_len(self);
 
 	while (next) {
 		n = rb_entry(next, struct hist_entry, rb_node);
@@ -532,8 +575,9 @@ static size_t hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
 }
 
 int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
-			 struct hists *pair_hists, bool show_displacement,
-			 long displacement, bool color, u64 session_total)
+			 struct hists *hists, struct hists *pair_hists,
+			 bool show_displacement, long displacement,
+			 bool color, u64 session_total)
 {
 	struct sort_entry *se;
 	u64 period, total, period_sys, period_us, period_guest_sys, period_guest_us;
@@ -637,32 +681,33 @@ int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
 
 		ret += snprintf(s + ret, size - ret, "%s", sep ?: "  ");
 		ret += se->se_snprintf(self, s + ret, size - ret,
-				       se->se_width ? *se->se_width : 0);
+				       hists__col_len(hists, se->se_width_idx));
 	}
 
 	return ret;
 }
 
-int hist_entry__fprintf(struct hist_entry *self, struct hists *pair_hists,
-			bool show_displacement, long displacement, FILE *fp,
-			u64 session_total)
+int hist_entry__fprintf(struct hist_entry *self, struct hists *hists,
+			struct hists *pair_hists, bool show_displacement,
+			long displacement, FILE *fp, u64 session_total)
 {
 	char bf[512];
-	hist_entry__snprintf(self, bf, sizeof(bf), pair_hists,
+	hist_entry__snprintf(self, bf, sizeof(bf), hists, pair_hists,
 			     show_displacement, displacement,
 			     true, session_total);
 	return fprintf(fp, "%s\n", bf);
 }
 
-static size_t hist_entry__fprintf_callchain(struct hist_entry *self, FILE *fp,
+static size_t hist_entry__fprintf_callchain(struct hist_entry *self,
+					    struct hists *hists, FILE *fp,
 					    u64 session_total)
 {
 	int left_margin = 0;
 
 	if (sort__first_dimension == SORT_COMM) {
 		struct sort_entry *se = list_first_entry(&hist_entry__sort_list,
 							 typeof(*se), list);
-		left_margin = se->se_width ? *se->se_width : 0;
+		left_margin = hists__col_len(hists, se->se_width_idx);
 		left_margin -= thread__comm_len(self->thread);
 	}
 
@@ -733,17 +778,17 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
 			continue;
 		}
 		width = strlen(se->se_header);
-		if (se->se_width) {
-			if (symbol_conf.col_width_list_str) {
-				if (col_width) {
-					*se->se_width = atoi(col_width);
-					col_width = strchr(col_width, ',');
-					if (col_width)
-						++col_width;
-				}
+		if (symbol_conf.col_width_list_str) {
+			if (col_width) {
+				hists__set_col_len(self, se->se_width_idx,
+						   atoi(col_width));
+				col_width = strchr(col_width, ',');
+				if (col_width)
+					++col_width;
 			}
-			width = *se->se_width = max(*se->se_width, width);
 		}
+		if (!hists__new_col_len(self, se->se_width_idx, width))
+			width = hists__col_len(self, se->se_width_idx);
 		fprintf(fp, "  %*s", width, se->se_header);
 	}
 	fprintf(fp, "\n");
@@ -766,9 +811,8 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
 			continue;
 
 		fprintf(fp, "  ");
-		if (se->se_width)
-			width = *se->se_width;
-		else
+		width = hists__col_len(self, se->se_width_idx);
+		if (width == 0)
 			width = strlen(se->se_header);
 		for (i = 0; i < width; i++)
 			fprintf(fp, ".");
@@ -788,12 +832,12 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
 				displacement = 0;
 			++position;
 		}
-		ret += hist_entry__fprintf(h, pair, show_displacement,
+		ret += hist_entry__fprintf(h, self, pair, show_displacement,
 					   displacement, fp, self->stats.total_period);
 
 		if (symbol_conf.use_callchain)
-			ret += hist_entry__fprintf_callchain(h, fp, self->stats.total_period);
-
+			ret += hist_entry__fprintf_callchain(h, self, fp,
+							     self->stats.total_period);
 		if (h->ms.map == NULL && verbose > 1) {
 			__map_groups__fprintf_maps(&h->thread->mg,
 						   MAP__FUNCTION, verbose, fp);
@@ -817,8 +861,7 @@ static void hists__remove_entry_filter(struct hists *self, struct hist_entry *h,
 	self->stats.total_period += h->period;
 	self->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events;
 
-	if (h->ms.sym && self->max_sym_namelen < h->ms.sym->namelen)
-		self->max_sym_namelen = h->ms.sym->namelen;
+	hists__calc_col_len(self, h);
 }
 
 void hists__filter_by_dso(struct hists *self, const struct dso *dso)
@@ -827,7 +870,7 @@ void hists__filter_by_dso(struct hists *self, const struct dso *dso)
 
 	self->nr_entries = self->stats.total_period = 0;
 	self->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
-	self->max_sym_namelen = 0;
+	hists__reset_col_len(self);
 
 	for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
 		struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
@@ -850,7 +893,7 @@ void hists__filter_by_thread(struct hists *self, const struct thread *thread)
 
 	self->nr_entries = self->stats.total_period = 0;
 	self->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
-	self->max_sym_namelen = 0;
+	hists__reset_col_len(self);
 
 	for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
 		struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);

tools/perf/util/hist.h

@@ -56,6 +56,16 @@ struct events_stats {
 	u32 nr_unknown_events;
 };
 
+enum hist_column {
+	HISTC_SYMBOL,
+	HISTC_DSO,
+	HISTC_THREAD,
+	HISTC_COMM,
+	HISTC_PARENT,
+	HISTC_CPU,
+	HISTC_NR_COLS, /* Last entry */
+};
+
 struct hists {
 	struct rb_node		rb_node;
 	struct rb_root		entries;
@@ -64,20 +74,21 @@ struct hists {
 	u64			config;
 	u64			event_stream;
 	u32			type;
-	u32			max_sym_namelen;
+	u16			col_len[HISTC_NR_COLS];
 };
 
 struct hist_entry *__hists__add_entry(struct hists *self,
 				      struct addr_location *al,
 				      struct symbol *parent, u64 period);
 extern int64_t hist_entry__cmp(struct hist_entry *, struct hist_entry *);
 extern int64_t hist_entry__collapse(struct hist_entry *, struct hist_entry *);
-int hist_entry__fprintf(struct hist_entry *self, struct hists *pair_hists,
-			bool show_displacement, long displacement, FILE *fp,
-			u64 total);
+int hist_entry__fprintf(struct hist_entry *self, struct hists *hists,
+			struct hists *pair_hists, bool show_displacement,
+			long displacement, FILE *fp, u64 total);
 int hist_entry__snprintf(struct hist_entry *self, char *bf, size_t size,
-			 struct hists *pair_hists, bool show_displacement,
-			 long displacement, bool color, u64 total);
+			 struct hists *hists, struct hists *pair_hists,
+			 bool show_displacement, long displacement,
+			 bool color, u64 total);
 void hist_entry__free(struct hist_entry *);
 
 void hists__output_resort(struct hists *self);
@@ -95,6 +106,10 @@ int hist_entry__annotate(struct hist_entry *self, struct list_head *head);
 void hists__filter_by_dso(struct hists *self, const struct dso *dso);
 void hists__filter_by_thread(struct hists *self, const struct thread *thread);
 
+u16 hists__col_len(struct hists *self, enum hist_column col);
+void hists__set_col_len(struct hists *self, enum hist_column col, u16 len);
+bool hists__new_col_len(struct hists *self, enum hist_column col, u16 len);
+
 #ifdef NO_NEWT_SUPPORT
 static inline int hists__browse(struct hists *self __used,
 				const char *helpline __used,

tools/perf/util/newt.c

@@ -692,16 +692,17 @@ static void hist_entry__append_callchain_browser(struct hist_entry *self,
 }
 
 static size_t hist_entry__append_browser(struct hist_entry *self,
-					 newtComponent tree, u64 total)
+					 newtComponent tree,
+					 struct hists *hists)
 {
 	char s[256];
 	size_t ret;
 
 	if (symbol_conf.exclude_other && !self->parent)
 		return 0;
 
-	ret = hist_entry__snprintf(self, s, sizeof(s), NULL,
-				   false, 0, false, total);
+	ret = hist_entry__snprintf(self, s, sizeof(s), hists, NULL,
+				   false, 0, false, hists->stats.total_period);
 	if (symbol_conf.use_callchain) {
 		int indexes[2];
 
@@ -842,7 +843,7 @@ static int hist_browser__populate(struct hist_browser *self, struct hists *hists
 		if (h->filtered)
 			continue;
 
-		len = hist_entry__append_browser(h, self->tree, hists->stats.total_period);
+		len = hist_entry__append_browser(h, self->tree, hists);
 		if (len > max_len)
 			max_len = len;
 		if (symbol_conf.use_callchain)