perf block: Cleanup and refactor block info functions

We have already implemented some block-info related functions.
Now it's time to do some cleanup, refactoring and move the
functions and structures to new block-info.h/block-info.c.

 v4:
 ---
 Move code for skipping column length calculation to patch:
 'perf diff: Don't use hack to skip column length calculation'

 v3:
 ---
 1. Rename the patch title
 2. Rename from block.h/block.c to block-info.h/block-info.c
 3. Move more common part to block-info, such as
    block_info__process_sym.
 4. Remove the nasty hack for skipping calculation of column
    length

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20191107074719.26139-3-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

6 files changed, 174 insertions, 46 deletions

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 39814b1806a6..b8e05a147b2b 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -1,4 +1,5 @@
 perf-y += annotate.o
+perf-y += block-info.o
 perf-y += block-range.o
 perf-y += build-id.o
 perf-y += cacheline.o
diff --git a/tools/perf/util/block-info.c b/tools/perf/util/block-info.c
new file mode 100644
index 000000000000..b9954a32b8f4
--- /dev/null
+++ b/tools/perf/util/block-info.c
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdlib.h>
+#include <string.h>
+#include <linux/zalloc.h>
+#include "block-info.h"
+#include "sort.h"
+#include "annotate.h"
+#include "symbol.h"
+
+struct block_info *block_info__get(struct block_info *bi)
+{
+	if (bi)
+		refcount_inc(&bi->refcnt);
+	return bi;
+}
+
+void block_info__put(struct block_info *bi)
+{
+	if (bi && refcount_dec_and_test(&bi->refcnt))
+		free(bi);
+}
+
+struct block_info *block_info__new(void)
+{
+	struct block_info *bi = zalloc(sizeof(*bi));
+
+	if (bi)
+		refcount_set(&bi->refcnt, 1);
+	return bi;
+}
+
+int64_t block_info__cmp(struct perf_hpp_fmt *fmt __maybe_unused,
+			struct hist_entry *left, struct hist_entry *right)
+{
+	struct block_info *bi_l = left->block_info;
+	struct block_info *bi_r = right->block_info;
+	int cmp;
+
+	if (!bi_l->sym || !bi_r->sym) {
+		if (!bi_l->sym && !bi_r->sym)
+			return 0;
+		else if (!bi_l->sym)
+			return -1;
+		else
+			return 1;
+	}
+
+	if (bi_l->sym == bi_r->sym) {
+		if (bi_l->start == bi_r->start) {
+			if (bi_l->end == bi_r->end)
+				return 0;
+			else
+				return (int64_t)(bi_r->end - bi_l->end);
+		} else
+			return (int64_t)(bi_r->start - bi_l->start);
+	} else {
+		cmp = strcmp(bi_l->sym->name, bi_r->sym->name);
+		return cmp;
+	}
+
+	if (bi_l->sym->start != bi_r->sym->start)
+		return (int64_t)(bi_r->sym->start - bi_l->sym->start);
+
+	return (int64_t)(bi_r->sym->end - bi_l->sym->end);
+}
+
+static void init_block_info(struct block_info *bi, struct symbol *sym,
+			    struct cyc_hist *ch, int offset,
+			    u64 total_cycles)
+{
+	bi->sym = sym;
+	bi->start = ch->start;
+	bi->end = offset;
+	bi->cycles = ch->cycles;
+	bi->cycles_aggr = ch->cycles_aggr;
+	bi->num = ch->num;
+	bi->num_aggr = ch->num_aggr;
+	bi->total_cycles = total_cycles;
+
+	memcpy(bi->cycles_spark, ch->cycles_spark,
+	       NUM_SPARKS * sizeof(u64));
+}
+
+int block_info__process_sym(struct hist_entry *he, struct block_hist *bh,
+			    u64 *block_cycles_aggr, u64 total_cycles)
+{
+	struct annotation *notes;
+	struct cyc_hist *ch;
+	static struct addr_location al;
+	u64 cycles = 0;
+
+	if (!he->ms.map || !he->ms.sym)
+		return 0;
+
+	memset(&al, 0, sizeof(al));
+	al.map = he->ms.map;
+	al.sym = he->ms.sym;
+
+	notes = symbol__annotation(he->ms.sym);
+	if (!notes || !notes->src || !notes->src->cycles_hist)
+		return 0;
+	ch = notes->src->cycles_hist;
+	for (unsigned int i = 0; i < symbol__size(he->ms.sym); i++) {
+		if (ch[i].num_aggr) {
+			struct block_info *bi;
+			struct hist_entry *he_block;
+
+			bi = block_info__new();
+			if (!bi)
+				return -1;
+
+			init_block_info(bi, he->ms.sym, &ch[i], i,
+					total_cycles);
+			cycles += bi->cycles_aggr / bi->num_aggr;
+
+			he_block = hists__add_entry_block(&bh->block_hists,
+							  &al, bi);
+			if (!he_block) {
+				block_info__put(bi);
+				return -1;
+			}
+		}
+	}
+
+	if (block_cycles_aggr)
+		*block_cycles_aggr += cycles;
+
+	return 0;
+}
diff --git a/tools/perf/util/block-info.h b/tools/perf/util/block-info.h
new file mode 100644
index 000000000000..d55dfc2fda6f
--- /dev/null
+++ b/tools/perf/util/block-info.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __PERF_BLOCK_H
+#define __PERF_BLOCK_H
+
+#include <linux/types.h>
+#include <linux/refcount.h>
+#include "util/hist.h"
+#include "util/symbol.h"
+
+struct block_info {
+	struct symbol		*sym;
+	u64			start;
+	u64			end;
+	u64			cycles;
+	u64			cycles_aggr;
+	s64			cycles_spark[NUM_SPARKS];
+	u64			total_cycles;
+	int			num;
+	int			num_aggr;
+	refcount_t		refcnt;
+};
+
+struct block_hist;
+
+struct block_info *block_info__new(void);
+struct block_info *block_info__get(struct block_info *bi);
+void   block_info__put(struct block_info *bi);
+
+static inline void __block_info__zput(struct block_info **bi)
+{
+	block_info__put(*bi);
+	*bi = NULL;
+}
+
+#define block_info__zput(bi) __block_info__zput(&bi)
+
+int64_t block_info__cmp(struct perf_hpp_fmt *fmt __maybe_unused,
+			struct hist_entry *left, struct hist_entry *right);
+
+int block_info__process_sym(struct hist_entry *he, struct block_hist *bh,
+			    u64 *block_cycles_aggr, u64 total_cycles);
+
+#endif /* __PERF_BLOCK_H */
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index daa6eef4fde0..a7fa061987e4 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -18,6 +18,7 @@
 #include "srcline.h"
 #include "symbol.h"
 #include "thread.h"
+#include "block-info.h"
 #include "ui/progress.h"
 #include <errno.h>
 #include <math.h>
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 4ad39cc6368d..2764863212b1 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -2351,25 +2351,3 @@ struct mem_info *mem_info__new(void)
 		refcount_set(&mi->refcnt, 1);
 	return mi;
 }
-
-struct block_info *block_info__get(struct block_info *bi)
-{
-	if (bi)
-		refcount_inc(&bi->refcnt);
-	return bi;
-}
-
-void block_info__put(struct block_info *bi)
-{
-	if (bi && refcount_dec_and_test(&bi->refcnt))
-		free(bi);
-}
-
-struct block_info *block_info__new(void)
-{
-	struct block_info *bi = zalloc(sizeof(*bi));
-
-	if (bi)
-		refcount_set(&bi->refcnt, 1);
-	return bi;
-}
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index cc2a89b99d3d..c3bd16d75d5d 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -106,18 +106,6 @@ struct ref_reloc_sym {
 	u64		unrelocated_addr;
 };
 
-struct block_info {
-	struct symbol		*sym;
-	u64			start;
-	u64			end;
-	u64			cycles;
-	u64			cycles_aggr;
-	s64			cycles_spark[NUM_SPARKS];
-	int			num;
-	int			num_aggr;
-	refcount_t		refcnt;
-};
-
 struct addr_location {
 	struct machine *machine;
 	struct thread *thread;
@@ -291,16 +279,4 @@ static inline void __mem_info__zput(struct mem_info **mi)
 
 #define mem_info__zput(mi) __mem_info__zput(&mi)
 
-struct block_info *block_info__new(void);
-struct block_info *block_info__get(struct block_info *bi);
-void   block_info__put(struct block_info *bi);
-
-static inline void __block_info__zput(struct block_info **bi)
-{
-	block_info__put(*bi);
-	*bi = NULL;
-}
-
-#define block_info__zput(bi) __block_info__zput(&bi)
-
 #endif /* __PERF_SYMBOL */