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perf symbols: Set module info when build-id event found 

Like machine__findnew_module_dso(), it should set necessary info for
kernel modules to find symbol info from the file.  Factor out
dso__set_module_info() to do it.

This is needed for dso__needs_decompress() to detect such DSOs.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170531120105.21731-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2017-05-31 21:01:04 +09:00 committed by Arnaldo Carvalho de Melo
parent 1deec1bd96
commit 6b335e8f54
4 changed files with 20 additions and 11 deletions
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15
tools/perf/util/dso.c
View File

@ -335,6 +335,21 @@ int __kmod_path__parse(struct kmod_path *m, const char *path,
return 0;
}
void dso__set_module_info(struct dso *dso, struct kmod_path *m,
struct machine *machine)
{
if (machine__is_host(machine))
dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
else
dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
/* _KMODULE_COMP should be next to _KMODULE */
if (m->kmod && m->comp)
dso->symtab_type++;
dso__set_short_name(dso, strdup(m->name), true);
}
/*
* Global list of open DSOs and the counter.
*/

3
tools/perf/util/dso.h
View File

@ -259,6 +259,9 @@ int __kmod_path__parse(struct kmod_path *m, const char *path,
#define kmod_path__parse_name(__m, __p) __kmod_path__parse(__m, __p, true , false)
#define kmod_path__parse_ext(__m, __p) __kmod_path__parse(__m, __p, false, true)
void dso__set_module_info(struct dso *dso, struct kmod_path *m,
struct machine *machine);
/*
* The dso__data_* external interface provides following functions:
* dso__data_get_fd

2
tools/perf/util/header.c
View File

@ -1473,7 +1473,7 @@ static int __event_process_build_id(struct build_id_event *bev,
struct kmod_path m = { .name = NULL, };
if (!kmod_path__parse_name(&m, filename) && m.kmod)
dso__set_short_name(dso, strdup(m.name), true);
dso__set_module_info(dso, &m, machine);
else
dso->kernel = dso_type;

11
tools/perf/util/machine.c
View File

@ -572,16 +572,7 @@ static struct dso *machine__findnew_module_dso(struct machine *machine,
if (dso == NULL)
goto out_unlock;
if (machine__is_host(machine))
dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
else
dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
/* _KMODULE_COMP should be next to _KMODULE */
if (m->kmod && m->comp)
dso->symtab_type++;
dso__set_short_name(dso, strdup(m->name), true);
dso__set_module_info(dso, m, machine);
dso__set_long_name(dso, strdup(filename), true);
}