Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#include "cpumap.h"
2#include "env.h"
3#include "util.h"
4
5struct perf_env perf_env;
6
7void perf_env__exit(struct perf_env *env)
8{
9 zfree(&env->hostname);
10 zfree(&env->os_release);
11 zfree(&env->version);
12 zfree(&env->arch);
13 zfree(&env->cpu_desc);
14 zfree(&env->cpuid);
15 zfree(&env->cmdline);
16 zfree(&env->cmdline_argv);
17 zfree(&env->sibling_cores);
18 zfree(&env->sibling_threads);
19 zfree(&env->numa_nodes);
20 zfree(&env->pmu_mappings);
21 zfree(&env->cpu);
22}
23
24int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[])
25{
26 int i;
27
28 /* do not include NULL termination */
29 env->cmdline_argv = calloc(argc, sizeof(char *));
30 if (env->cmdline_argv == NULL)
31 goto out_enomem;
32
33 /*
34 * Must copy argv contents because it gets moved around during option
35 * parsing:
36 */
37 for (i = 0; i < argc ; i++) {
38 env->cmdline_argv[i] = argv[i];
39 if (env->cmdline_argv[i] == NULL)
40 goto out_free;
41 }
42
43 env->nr_cmdline = argc;
44
45 return 0;
46out_free:
47 zfree(&env->cmdline_argv);
48out_enomem:
49 return -ENOMEM;
50}
51
52int perf_env__read_cpu_topology_map(struct perf_env *env)
53{
54 int cpu, nr_cpus;
55
56 if (env->cpu != NULL)
57 return 0;
58
59 if (env->nr_cpus_avail == 0)
60 env->nr_cpus_avail = sysconf(_SC_NPROCESSORS_CONF);
61
62 nr_cpus = env->nr_cpus_avail;
63 if (nr_cpus == -1)
64 return -EINVAL;
65
66 env->cpu = calloc(nr_cpus, sizeof(env->cpu[0]));
67 if (env->cpu == NULL)
68 return -ENOMEM;
69
70 for (cpu = 0; cpu < nr_cpus; ++cpu) {
71 env->cpu[cpu].core_id = cpu_map__get_core_id(cpu);
72 env->cpu[cpu].socket_id = cpu_map__get_socket_id(cpu);
73 }
74
75 env->nr_cpus_avail = nr_cpus;
76 return 0;
77}