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perf env: Introduce perf_env__arch_strerrno()

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That will cache the arch specific function translating error numbers to
strings.

Reviewed-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/20231201203046.486596-2-acme@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2023-12-01 14:52:00 -03:00
parent 556bed5c6d
commit 54373b5d53
3 changed files with 15 additions and 4 deletions
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6
tools/perf/builtin-trace.c
View File

@ -2470,9 +2470,8 @@ static int trace__fprintf_callchain(struct trace *trace, struct perf_sample *sam
static const char *errno_to_name(struct evsel *evsel, int err)
{
struct perf_env *env = evsel__env(evsel);
const char *arch_name = perf_env__arch(env);
return arch_syscalls__strerrno(arch_name, err);
return perf_env__arch_strerrno(env, err);
}
static int trace__sys_exit(struct trace *trace, struct evsel *evsel,
@ -4264,12 +4263,11 @@ static size_t thread__dump_stats(struct thread_trace *ttrace,
printed += fprintf(fp, " %9.3f %9.2f%%\n", max, pct);
if (trace->errno_summary && stats->nr_failures) {
const char *arch_name = perf_env__arch(trace->host->env);
int e;
for (e = 0; e < stats->max_errno; ++e) {
if (stats->errnos[e] != 0)
fprintf(fp, "\t\t\t\t%s: %d\n", arch_syscalls__strerrno(arch_name, e + 1), stats->errnos[e]);
fprintf(fp, "\t\t\t\t%s: %d\n", perf_env__arch_strerrno(trace->host->env, e + 1), stats->errnos[e]);
}
}
}

12
tools/perf/util/env.c
View File

@ -3,6 +3,7 @@
#include "debug.h"
#include "env.h"
#include "util/header.h"
#include "linux/compiler.h"
#include <linux/ctype.h>
#include <linux/zalloc.h>
#include "cgroup.h"
@ -12,6 +13,7 @@
#include <string.h>
#include "pmus.h"
#include "strbuf.h"
#include "trace/beauty/beauty.h"
struct perf_env perf_env;
@ -453,6 +455,16 @@ const char *perf_env__arch(struct perf_env *env)
return normalize_arch(arch_name);
}
const char *perf_env__arch_strerrno(struct perf_env *env __maybe_unused, int err __maybe_unused)
{
#if defined(HAVE_SYSCALL_TABLE_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
const char *arch_name = perf_env__arch(env);
return arch_syscalls__strerrno(arch_name, err);
#else
return "!(HAVE_SYSCALL_TABLE_SUPPORT && HAVE_LIBTRACEEVENT)";
#endif
}
const char *perf_env__cpuid(struct perf_env *env)
{
int status;

1
tools/perf/util/env.h
View File

@ -164,6 +164,7 @@ 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__arch_strerrno(struct perf_env *env, int err);
const char *perf_env__cpuid(struct perf_env *env);
const char *perf_env__raw_arch(struct perf_env *env);
int perf_env__nr_cpus_avail(struct perf_env *env);