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perf machine: Add machine__is() to identify machine arch

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Add a function to identify the machine architecture.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/1526548928-20790-6-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2018-05-17 12:21:53 +03:00 committed by Arnaldo Carvalho de Melo
parent cfc4033be7
commit dbbd34a666
4 changed files with 31 additions and 0 deletions
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18
tools/perf/util/env.c
View File

@ -93,6 +93,24 @@ int perf_env__read_cpu_topology_map(struct perf_env *env)
return 0;
}
static int perf_env__read_arch(struct perf_env *env)
{
struct utsname uts;
if (env->arch)
return 0;
if (!uname(&uts))
env->arch = strdup(uts.machine);
return env->arch ? 0 : -ENOMEM;
}
const char *perf_env__raw_arch(struct perf_env *env)
{
return env && !perf_env__read_arch(env) ? env->arch : "unknown";
}
void cpu_cache_level__free(struct cpu_cache_level *cache)
{
free(cache->type);

2
tools/perf/util/env.h
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@ -76,4 +76,6 @@ int perf_env__read_cpu_topology_map(struct perf_env *env);
void cpu_cache_level__free(struct cpu_cache_level *cache);
const char *perf_env__arch(struct perf_env *env);
const char *perf_env__raw_arch(struct perf_env *env);
#endif /* __PERF_ENV_H */

9
tools/perf/util/machine.c
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@ -2296,6 +2296,15 @@ int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid,
return 0;
}
/*
* Compares the raw arch string. N.B. see instead perf_env__arch() if a
* normalized arch is needed.
*/
bool machine__is(struct machine *machine, const char *arch)
{
return machine && !strcmp(perf_env__raw_arch(machine->env), arch);
}
int machine__get_kernel_start(struct machine *machine)
{
struct map *map = machine__kernel_map(machine);

2
tools/perf/util/machine.h
View File

@ -188,6 +188,8 @@ static inline bool machine__is_host(struct machine *machine)
return machine ? machine->pid == HOST_KERNEL_ID : false;
}
bool machine__is(struct machine *machine, const char *arch);
struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);