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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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4e8fbc1c97
And use it in the libunwind case, with both passing a valid perf_env to extract the arch to be normalized from and passing NULL with the same semantic as in the annotate code: to get it from uname() uts.machine. Now the code to generate per arch errno translation tables (int/string) can use it to decode perf.data files recorded in a different arch than that where 'perf trace' (or any other analysis tool) runs. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Richter <tmricht@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-p2epffgash69w38kvj3ntpc9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
143 lines
3.0 KiB
C
143 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "cpumap.h"
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#include "env.h"
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#include "sane_ctype.h"
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#include "util.h"
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#include <errno.h>
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#include <sys/utsname.h>
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struct perf_env perf_env;
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void perf_env__exit(struct perf_env *env)
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{
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int i;
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zfree(&env->hostname);
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zfree(&env->os_release);
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zfree(&env->version);
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zfree(&env->arch);
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zfree(&env->cpu_desc);
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zfree(&env->cpuid);
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zfree(&env->cmdline);
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zfree(&env->cmdline_argv);
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zfree(&env->sibling_cores);
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zfree(&env->sibling_threads);
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zfree(&env->pmu_mappings);
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zfree(&env->cpu);
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for (i = 0; i < env->nr_numa_nodes; i++)
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cpu_map__put(env->numa_nodes[i].map);
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zfree(&env->numa_nodes);
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for (i = 0; i < env->caches_cnt; i++)
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cpu_cache_level__free(&env->caches[i]);
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zfree(&env->caches);
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}
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int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[])
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{
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int i;
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/* do not include NULL termination */
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env->cmdline_argv = calloc(argc, sizeof(char *));
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if (env->cmdline_argv == NULL)
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goto out_enomem;
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/*
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* Must copy argv contents because it gets moved around during option
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* parsing:
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*/
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for (i = 0; i < argc ; i++) {
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env->cmdline_argv[i] = argv[i];
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if (env->cmdline_argv[i] == NULL)
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goto out_free;
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}
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env->nr_cmdline = argc;
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return 0;
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out_free:
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zfree(&env->cmdline_argv);
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out_enomem:
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return -ENOMEM;
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}
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int perf_env__read_cpu_topology_map(struct perf_env *env)
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{
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int cpu, nr_cpus;
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if (env->cpu != NULL)
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return 0;
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if (env->nr_cpus_avail == 0)
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env->nr_cpus_avail = cpu__max_present_cpu();
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nr_cpus = env->nr_cpus_avail;
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if (nr_cpus == -1)
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return -EINVAL;
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env->cpu = calloc(nr_cpus, sizeof(env->cpu[0]));
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if (env->cpu == NULL)
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return -ENOMEM;
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for (cpu = 0; cpu < nr_cpus; ++cpu) {
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env->cpu[cpu].core_id = cpu_map__get_core_id(cpu);
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env->cpu[cpu].socket_id = cpu_map__get_socket_id(cpu);
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}
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env->nr_cpus_avail = nr_cpus;
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return 0;
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}
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void cpu_cache_level__free(struct cpu_cache_level *cache)
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{
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free(cache->type);
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free(cache->map);
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free(cache->size);
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}
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/*
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* Return architecture name in a normalized form.
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* The conversion logic comes from the Makefile.
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*/
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static const char *normalize_arch(char *arch)
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{
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if (!strcmp(arch, "x86_64"))
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return "x86";
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if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6')
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return "x86";
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if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
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return "sparc";
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if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64"))
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return "arm64";
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if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
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return "arm";
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if (!strncmp(arch, "s390", 4))
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return "s390";
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if (!strncmp(arch, "parisc", 6))
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return "parisc";
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if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3))
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return "powerpc";
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if (!strncmp(arch, "mips", 4))
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return "mips";
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if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
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return "sh";
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return arch;
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}
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const char *perf_env__arch(struct perf_env *env)
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{
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struct utsname uts;
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char *arch_name;
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if (!env) { /* Assume local operation */
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if (uname(&uts) < 0)
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return NULL;
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arch_name = uts.machine;
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} else
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arch_name = env->arch;
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return normalize_arch(arch_name);
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}
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