Merge branch 'linus' into smp/urgent

Ensure that all usage sites of get/put_online_cpus() except for the
struggler in drivers/thermal are gone. So the last user and the deprecated
inlines can be removed.

1 files changed, 24 insertions, 2 deletions

diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c
index cec2e6cad8aa..8f7ff0035c41 100644
--- a/tools/perf/util/env.c
+++ b/tools/perf/util/env.c
@@ -219,13 +219,35 @@ void perf_env__exit(struct perf_env *env)
 	zfree(&env->hybrid_cpc_nodes);
 }
 
-void perf_env__init(struct perf_env *env __maybe_unused)
+void perf_env__init(struct perf_env *env)
 {
 #ifdef HAVE_LIBBPF_SUPPORT
 	env->bpf_progs.infos = RB_ROOT;
 	env->bpf_progs.btfs = RB_ROOT;
 	init_rwsem(&env->bpf_progs.lock);
 #endif
+	env->kernel_is_64_bit = -1;
+}
+
+static void perf_env__init_kernel_mode(struct perf_env *env)
+{
+	const char *arch = perf_env__raw_arch(env);
+
+	if (!strncmp(arch, "x86_64", 6) || !strncmp(arch, "aarch64", 7) ||
+	    !strncmp(arch, "arm64", 5) || !strncmp(arch, "mips64", 6) ||
+	    !strncmp(arch, "parisc64", 8) || !strncmp(arch, "riscv64", 7) ||
+	    !strncmp(arch, "s390x", 5) || !strncmp(arch, "sparc64", 7))
+		env->kernel_is_64_bit = 1;
+	else
+		env->kernel_is_64_bit = 0;
+}
+
+int perf_env__kernel_is_64_bit(struct perf_env *env)
+{
+	if (env->kernel_is_64_bit == -1)
+		perf_env__init_kernel_mode(env);
+
+	return env->kernel_is_64_bit;
 }
 
 int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[])
@@ -349,7 +371,7 @@ static const char *normalize_arch(char *arch)
 		return "x86";
 	if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
 		return "sparc";
-	if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64"))
+	if (!strncmp(arch, "aarch64", 7) || !strncmp(arch, "arm64", 5))
 		return "arm64";
 	if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
 		return "arm";