lkml.org 
[lkml]   [2018]   [May]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[tip:perf/core] perf symbols: kallsyms__delta() needs the kmap, not the map
Commit-ID:  019c6820d540d67608018238d91e57447ca7060f
Gitweb: https://git.kernel.org/tip/019c6820d540d67608018238d91e57447ca7060f
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Fri, 27 Apr 2018 15:47:13 -0300
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Fri, 27 Apr 2018 15:47:13 -0300

perf symbols: kallsyms__delta() needs the kmap, not the map

It was only using the map to obtain its kmap, so do the validation in
its called, __dso__load_kallsyms() and pass the kmap, that will be used
in the following patches in similar simplifications.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-u6p9hbonlqzpl6o1z9xzxd75@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/symbol.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 2517f2c2454f..76de63cecf98 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1267,14 +1267,10 @@ out_err:
* If the kernel is relocated at boot time, kallsyms won't match. Compute the
* delta based on the relocation reference symbol.
*/
-static int kallsyms__delta(struct map *map, const char *filename, u64 *delta)
+static int kallsyms__delta(struct kmap *kmap, const char *filename, u64 *delta)
{
- struct kmap *kmap = map__kmap(map);
u64 addr;

- if (!kmap)
- return -1;
-
if (!kmap->ref_reloc_sym || !kmap->ref_reloc_sym->name)
return 0;

@@ -1288,15 +1284,19 @@ static int kallsyms__delta(struct map *map, const char *filename, u64 *delta)
int __dso__load_kallsyms(struct dso *dso, const char *filename,
struct map *map, bool no_kcore)
{
+ struct kmap *kmap = map__kmap(map);
u64 delta = 0;

if (symbol__restricted_filename(filename, "/proc/kallsyms"))
return -1;

+ if (!kmap || !kmap->kmaps)
+ return -1;
+
if (dso__load_all_kallsyms(dso, filename) < 0)
return -1;

- if (kallsyms__delta(map, filename, &delta))
+ if (kallsyms__delta(kmap, filename, &delta))
return -1;

symbols__fixup_end(&dso->symbols);
\
 
 \ /
  Last update: 2018-05-02 20:05    [W:0.222 / U:0.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site