1 #include "util/map_symbol.h"
2 #include "util/branch.h"
3 #include <linux/kernel.h>
4
cross_area(u64 addr1,u64 addr2,int size)5 static bool cross_area(u64 addr1, u64 addr2, int size)
6 {
7 u64 align1, align2;
8
9 align1 = addr1 & ~(size - 1);
10 align2 = addr2 & ~(size - 1);
11
12 return (align1 != align2) ? true : false;
13 }
14
15 #define AREA_4K 4096
16 #define AREA_2M (2 * 1024 * 1024)
17
branch_type_count(struct branch_type_stat * st,struct branch_flags * flags,u64 from,u64 to)18 void branch_type_count(struct branch_type_stat *st, struct branch_flags *flags,
19 u64 from, u64 to)
20 {
21 if (flags->type == PERF_BR_UNKNOWN || from == 0)
22 return;
23
24 st->counts[flags->type]++;
25
26 if (flags->type == PERF_BR_COND) {
27 if (to > from)
28 st->cond_fwd++;
29 else
30 st->cond_bwd++;
31 }
32
33 if (cross_area(from, to, AREA_2M))
34 st->cross_2m++;
35 else if (cross_area(from, to, AREA_4K))
36 st->cross_4k++;
37 }
38
branch_type_name(int type)39 const char *branch_type_name(int type)
40 {
41 const char *branch_names[PERF_BR_MAX] = {
42 "N/A",
43 "COND",
44 "UNCOND",
45 "IND",
46 "CALL",
47 "IND_CALL",
48 "RET",
49 "SYSCALL",
50 "SYSRET",
51 "COND_CALL",
52 "COND_RET",
53 "ERET",
54 "IRQ"
55 };
56
57 if (type >= 0 && type < PERF_BR_MAX)
58 return branch_names[type];
59
60 return NULL;
61 }
62
branch_type_stat_display(FILE * fp,struct branch_type_stat * st)63 void branch_type_stat_display(FILE *fp, struct branch_type_stat *st)
64 {
65 u64 total = 0;
66 int i;
67
68 for (i = 0; i < PERF_BR_MAX; i++)
69 total += st->counts[i];
70
71 if (total == 0)
72 return;
73
74 fprintf(fp, "\n#");
75 fprintf(fp, "\n# Branch Statistics:");
76 fprintf(fp, "\n#");
77
78 if (st->cond_fwd > 0) {
79 fprintf(fp, "\n%8s: %5.1f%%",
80 "COND_FWD",
81 100.0 * (double)st->cond_fwd / (double)total);
82 }
83
84 if (st->cond_bwd > 0) {
85 fprintf(fp, "\n%8s: %5.1f%%",
86 "COND_BWD",
87 100.0 * (double)st->cond_bwd / (double)total);
88 }
89
90 if (st->cross_4k > 0) {
91 fprintf(fp, "\n%8s: %5.1f%%",
92 "CROSS_4K",
93 100.0 * (double)st->cross_4k / (double)total);
94 }
95
96 if (st->cross_2m > 0) {
97 fprintf(fp, "\n%8s: %5.1f%%",
98 "CROSS_2M",
99 100.0 * (double)st->cross_2m / (double)total);
100 }
101
102 for (i = 0; i < PERF_BR_MAX; i++) {
103 if (st->counts[i] > 0)
104 fprintf(fp, "\n%8s: %5.1f%%",
105 branch_type_name(i),
106 100.0 *
107 (double)st->counts[i] / (double)total);
108 }
109 }
110
count_str_scnprintf(int idx,const char * str,char * bf,int size)111 static int count_str_scnprintf(int idx, const char *str, char *bf, int size)
112 {
113 return scnprintf(bf, size, "%s%s", (idx) ? " " : " (", str);
114 }
115
branch_type_str(struct branch_type_stat * st,char * bf,int size)116 int branch_type_str(struct branch_type_stat *st, char *bf, int size)
117 {
118 int i, j = 0, printed = 0;
119 u64 total = 0;
120
121 for (i = 0; i < PERF_BR_MAX; i++)
122 total += st->counts[i];
123
124 if (total == 0)
125 return 0;
126
127 if (st->cond_fwd > 0)
128 printed += count_str_scnprintf(j++, "COND_FWD", bf + printed, size - printed);
129
130 if (st->cond_bwd > 0)
131 printed += count_str_scnprintf(j++, "COND_BWD", bf + printed, size - printed);
132
133 for (i = 0; i < PERF_BR_MAX; i++) {
134 if (i == PERF_BR_COND)
135 continue;
136
137 if (st->counts[i] > 0)
138 printed += count_str_scnprintf(j++, branch_type_name(i), bf + printed, size - printed);
139 }
140
141 if (st->cross_4k > 0)
142 printed += count_str_scnprintf(j++, "CROSS_4K", bf + printed, size - printed);
143
144 if (st->cross_2m > 0)
145 printed += count_str_scnprintf(j++, "CROSS_2M", bf + printed, size - printed);
146
147 return printed;
148 }
149