#include #include #include "common.h" #include "../util/util.h" #include "../util/debug.h" const char *const arm_triplets[] = { "arm-eabi-", "arm-linux-androideabi-", "arm-unknown-linux-", "arm-unknown-linux-gnu-", "arm-unknown-linux-gnueabi-", "arm-linux-gnu-", "arm-linux-gnueabihf-", "arm-none-eabi-", NULL }; const char *const arm64_triplets[] = { "aarch64-linux-android-", "aarch64-linux-gnu-", NULL }; const char *const powerpc_triplets[] = { "powerpc-unknown-linux-gnu-", "powerpc64-unknown-linux-gnu-", "powerpc64-linux-gnu-", "powerpc64le-linux-gnu-", NULL }; const char *const s390_triplets[] = { "s390-ibm-linux-", "s390x-linux-gnu-", NULL }; const char *const sh_triplets[] = { "sh-unknown-linux-gnu-", "sh64-unknown-linux-gnu-", "sh-linux-gnu-", "sh64-linux-gnu-", NULL }; const char *const sparc_triplets[] = { "sparc-unknown-linux-gnu-", "sparc64-unknown-linux-gnu-", "sparc64-linux-gnu-", NULL }; const char *const x86_triplets[] = { "x86_64-pc-linux-gnu-", "x86_64-unknown-linux-gnu-", "i686-pc-linux-gnu-", "i586-pc-linux-gnu-", "i486-pc-linux-gnu-", "i386-pc-linux-gnu-", "i686-linux-android-", "i686-android-linux-", "x86_64-linux-gnu-", "i586-linux-gnu-", NULL }; const char *const mips_triplets[] = { "mips-unknown-linux-gnu-", "mipsel-linux-android-", "mips-linux-gnu-", "mips64-linux-gnu-", "mips64el-linux-gnuabi64-", "mips64-linux-gnuabi64-", "mipsel-linux-gnu-", NULL }; static bool lookup_path(char *name) { bool found = false; char *path, *tmp = NULL; char buf[PATH_MAX]; char *env = getenv("PATH"); if (!env) return false; env = strdup(env); if (!env) return false; path = strtok_r(env, ":", &tmp); while (path) { scnprintf(buf, sizeof(buf), "%s/%s", path, name); if (access(buf, F_OK) == 0) { found = true; break; } path = strtok_r(NULL, ":", &tmp); } free(env); return found; } static int lookup_triplets(const char *const *triplets, const char *name) { int i; char buf[PATH_MAX]; for (i = 0; triplets[i] != NULL; i++) { scnprintf(buf, sizeof(buf), "%s%s", triplets[i], name); if (lookup_path(buf)) return i; } return -1; } /* * Return architecture name in a normalized form. * The conversion logic comes from the Makefile. */ const char *normalize_arch(char *arch) { if (!strcmp(arch, "x86_64")) return "x86"; if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6') return "x86"; if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5)) return "sparc"; if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64")) return "arm64"; if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110")) return "arm"; if (!strncmp(arch, "s390", 4)) return "s390"; if (!strncmp(arch, "parisc", 6)) return "parisc"; if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3)) return "powerpc"; if (!strncmp(arch, "mips", 4)) return "mips"; if (!strncmp(arch, "sh", 2) && isdigit(arch[2])) return "sh"; return arch; } static int perf_env__lookup_binutils_path(struct perf_env *env, const char *name, const char **path) { int idx; const char *arch, *cross_env; struct utsname uts; const char *const *path_list; char *buf = NULL; arch = normalize_arch(env->arch); if (uname(&uts) < 0) goto out; /* * We don't need to try to find objdump path for native system. * Just use default binutils path (e.g.: "objdump"). */ if (!strcmp(normalize_arch(uts.machine), arch)) goto out; cross_env = getenv("CROSS_COMPILE"); if (cross_env) { if (asprintf(&buf, "%s%s", cross_env, name) < 0) goto out_error; if (buf[0] == '/') { if (access(buf, F_OK) == 0) goto out; goto out_error; } if (lookup_path(buf)) goto out; zfree(&buf); } if (!strcmp(arch, "arm")) path_list = arm_triplets; else if (!strcmp(arch, "arm64")) path_list = arm64_triplets; else if (!strcmp(arch, "powerpc")) path_list = powerpc_triplets; else if (!strcmp(arch, "sh")) path_list = sh_triplets; else if (!strcmp(arch, "s390")) path_list = s390_triplets; else if (!strcmp(arch, "sparc")) path_list = sparc_triplets; else if (!strcmp(arch, "x86")) path_list = x86_triplets; else if (!strcmp(arch, "mips")) path_list = mips_triplets; else { ui__error("binutils for %s not supported.\n", arch); goto out_error; } idx = lookup_triplets(path_list, name); if (idx < 0) { ui__error("Please install %s for %s.\n" "You can add it to PATH, set CROSS_COMPILE or " "override the default using --%s.\n", name, arch, name); goto out_error; } if (asprintf(&buf, "%s%s", path_list[idx], name) < 0) goto out_error; out: *path = buf; return 0; out_error: free(buf); *path = NULL; return -1; } int perf_env__lookup_objdump(struct perf_env *env) { /* * For live mode, env->arch will be NULL and we can use * the native objdump tool. */ if (env->arch == NULL) return 0; return perf_env__lookup_binutils_path(env, "objdump", &objdump_path); } /option>
authorDavid S. Miller <davem@davemloft.net>2017-02-07 16:29:30 -0500
committerDavid S. Miller <davem@davemloft.net>2017-02-07 16:29:30 -0500
commit3efa70d78f218e4c9276b0bac0545e5184c1c47b (patch)
treef4abe2f05e173023d2a262afd4aebb1e89fe6985 /tools/perf/Documentation/perf.txt
parent76e0e70e6452b971a69cc9794ff4a6715c11f7f2 (diff)
parent926af6273fc683cd98cd0ce7bf0d04a02eed6742 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
The conflict was an interaction between a bug fix in the netvsc driver in 'net' and an optimization of the RX path in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/Documentation/perf.txt')