1
2
3
4
5#include <stdio.h>
6#include <string.h>
7
8#include <rte_common.h>
9#include <rte_memory.h>
10#include <rte_lcore.h>
11#include <rte_power.h>
12#include <rte_string_fns.h>
13
14#include "perf_core.h"
15#include "main.h"
16
17
18static uint16_t hp_lcores[RTE_MAX_LCORE];
19static uint16_t nb_hp_lcores;
20
21struct perf_lcore_params {
22 uint16_t port_id;
23 uint8_t queue_id;
24 uint8_t high_perf;
25 uint8_t lcore_idx;
26} __rte_cache_aligned;
27
28static struct perf_lcore_params prf_lc_prms[MAX_LCORE_PARAMS];
29static uint16_t nb_prf_lc_prms;
30
31static int
32is_hp_core(unsigned int lcore)
33{
34 struct rte_power_core_capabilities caps;
35 int ret;
36
37
38 if (rte_power_get_env() == PM_ENV_NOT_SET) {
39
40 return 1;
41 }
42 ret = rte_power_get_capabilities(lcore, &caps);
43 return ret == 0 && caps.turbo;
44}
45
46int
47update_lcore_params(void)
48{
49 uint8_t non_perf_lcores[RTE_MAX_LCORE];
50 uint16_t nb_non_perf_lcores = 0;
51 int i, j;
52
53
54 if (nb_prf_lc_prms == 0)
55 return 0;
56
57
58 if (nb_hp_lcores == 0) {
59 for (i = 0; i < RTE_MAX_LCORE; i++) {
60 if (rte_lcore_is_enabled(i) && is_hp_core(i)) {
61 hp_lcores[nb_hp_lcores] = i;
62 nb_hp_lcores++;
63 }
64 }
65 }
66
67
68 for (i = 0; i < RTE_MAX_LCORE; i++) {
69 if (rte_lcore_is_enabled(i)) {
70 int hp = 0;
71 for (j = 0; j < nb_hp_lcores; j++) {
72 if (hp_lcores[j] == i) {
73 hp = 1;
74 break;
75 }
76 }
77 if (!hp)
78 non_perf_lcores[nb_non_perf_lcores++] = i;
79 }
80 }
81
82
83 for (i = 0; i < nb_prf_lc_prms; i++) {
84 int lcore = -1;
85 if (prf_lc_prms[i].high_perf) {
86 if (prf_lc_prms[i].lcore_idx < nb_hp_lcores)
87 lcore = hp_lcores[prf_lc_prms[i].lcore_idx];
88 } else {
89 if (prf_lc_prms[i].lcore_idx < nb_non_perf_lcores)
90 lcore =
91 non_perf_lcores[prf_lc_prms[i].lcore_idx];
92 }
93
94 if (lcore < 0) {
95 printf("Performance cores configuration error\n");
96 return -1;
97 }
98
99 lcore_params_array[i].lcore_id = lcore;
100 lcore_params_array[i].queue_id = prf_lc_prms[i].queue_id;
101 lcore_params_array[i].port_id = prf_lc_prms[i].port_id;
102 }
103
104 lcore_params = lcore_params_array;
105 nb_lcore_params = nb_prf_lc_prms;
106
107 printf("Updated performance core configuration\n");
108 for (i = 0; i < nb_prf_lc_prms; i++)
109 printf("\t(%d,%d,%d)\n", lcore_params[i].port_id,
110 lcore_params[i].queue_id,
111 lcore_params[i].lcore_id);
112
113 return 0;
114}
115
116int
117parse_perf_config(const char *q_arg)
118{
119 char s[256];
120 const char *p, *p0 = q_arg;
121 char *end;
122 enum fieldnames {
123 FLD_PORT = 0,
124 FLD_QUEUE,
125 FLD_LCORE_HP,
126 FLD_LCORE_IDX,
127 _NUM_FLD
128 };
129 unsigned long int_fld[_NUM_FLD];
130 char *str_fld[_NUM_FLD];
131 int i;
132 unsigned int size;
133
134 nb_prf_lc_prms = 0;
135
136 while ((p = strchr(p0, '(')) != NULL) {
137 ++p;
138 p0 = strchr(p, ')');
139 if (p0 == NULL)
140 return -1;
141
142 size = p0 - p;
143 if (size >= sizeof(s))
144 return -1;
145
146 snprintf(s, sizeof(s), "%.*s", size, p);
147 if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') !=
148 _NUM_FLD)
149 return -1;
150 for (i = 0; i < _NUM_FLD; i++) {
151 errno = 0;
152 int_fld[i] = strtoul(str_fld[i], &end, 0);
153 if (errno != 0 || end == str_fld[i] || int_fld[i] > 255)
154 return -1;
155 }
156 if (nb_prf_lc_prms >= MAX_LCORE_PARAMS) {
157 printf("exceeded max number of lcore params: %hu\n",
158 nb_prf_lc_prms);
159 return -1;
160 }
161 prf_lc_prms[nb_prf_lc_prms].port_id =
162 (uint8_t)int_fld[FLD_PORT];
163 prf_lc_prms[nb_prf_lc_prms].queue_id =
164 (uint8_t)int_fld[FLD_QUEUE];
165 prf_lc_prms[nb_prf_lc_prms].high_perf =
166 !!(uint8_t)int_fld[FLD_LCORE_HP];
167 prf_lc_prms[nb_prf_lc_prms].lcore_idx =
168 (uint8_t)int_fld[FLD_LCORE_IDX];
169 ++nb_prf_lc_prms;
170 }
171
172 return 0;
173}
174
175int
176parse_perf_core_list(const char *corelist)
177{
178 int i, idx = 0;
179 unsigned int count = 0;
180 char *end = NULL;
181 int min, max;
182
183 if (corelist == NULL) {
184 printf("invalid core list\n");
185 return -1;
186 }
187
188
189
190 while (isblank(*corelist))
191 corelist++;
192 i = strlen(corelist);
193 while ((i > 0) && isblank(corelist[i - 1]))
194 i--;
195
196
197 min = RTE_MAX_LCORE;
198 do {
199 while (isblank(*corelist))
200 corelist++;
201 if (*corelist == '\0')
202 return -1;
203 errno = 0;
204 idx = strtoul(corelist, &end, 10);
205 if (errno || end == NULL)
206 return -1;
207 while (isblank(*end))
208 end++;
209 if (*end == '-') {
210 min = idx;
211 } else if ((*end == ',') || (*end == '\0')) {
212 max = idx;
213 if (min == RTE_MAX_LCORE)
214 min = idx;
215 for (idx = min; idx <= max; idx++) {
216 hp_lcores[count] = idx;
217 count++;
218 }
219 min = RTE_MAX_LCORE;
220 } else {
221 printf("invalid core list\n");
222 return -1;
223 }
224 corelist = end + 1;
225 } while (*end != '\0');
226
227 if (count == 0) {
228 printf("invalid core list\n");
229 return -1;
230 }
231
232 nb_hp_lcores = count;
233
234 printf("Configured %d high performance cores\n", nb_hp_lcores);
235 for (i = 0; i < nb_hp_lcores; i++)
236 printf("\tHigh performance core %d %d\n",
237 i, hp_lcores[i]);
238
239 return 0;
240}
241
