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perf env: Adopt perf_env__arch() from the annotate code

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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>
This commit is contained in:
Arnaldo Carvalho de Melo
2017-12-11 14:47:49 -03:00
parent 3285debaf5
commit 4e8fbc1c97
6 changed files with 54 additions and 60 deletions
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4
tools/perf/util/unwind-libunwind.c
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@@ -3,7 +3,7 @@
#include "thread.h"
#include "session.h"
#include "debug.h"
#include "arch/common.h"
#include "env.h"
struct unwind_libunwind_ops __weak *local_unwind_libunwind_ops;
struct unwind_libunwind_ops __weak *x86_32_unwind_libunwind_ops;
@@ -39,7 +39,7 @@ int unwind__prepare_access(struct thread *thread, struct map *map,
if (dso_type == DSO__TYPE_UNKNOWN)
return 0;
arch = normalize_arch(thread->mg->machine->env->arch);
arch = perf_env__arch(thread->mg->machine->env);
if (!strcmp(arch, "x86")) {
if (dso_type != DSO__TYPE_64BIT)