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authorJens Axboe <axboe@kernel.dk>2012-05-01 14:29:55 +0200
committerJens Axboe <axboe@kernel.dk>2012-05-01 14:29:55 +0200
commit0b7877d4eea3f93e3dd941999522bbd8c538cb53 (patch)
treeade6d4e411b9b9b569c802e3b2179826162c934c /tools/perf/builtin-report.c
parentvmsplice: relax alignement requirements for SPLICE_F_GIFT (diff)
parentLinux 3.4-rc5 (diff)
downloadlinux-dev-0b7877d4eea3f93e3dd941999522bbd8c538cb53.tar.xz
linux-dev-0b7877d4eea3f93e3dd941999522bbd8c538cb53.zip
Merge tag 'v3.4-rc5' into for-3.5/core
The core branch is behind driver commits that we want to build on for 3.5, hence I'm pulling in a later -rc. Linux 3.4-rc5 Conflicts: Documentation/feature-removal-schedule.txt Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/builtin-report.c')
-rw-r--r--tools/perf/builtin-report.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 2e317438980b..cdae9b2db1cc 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -374,16 +374,23 @@ static int __cmd_report(struct perf_report *rep)
(kernel_map->dso->hit &&
(kernel_kmap->ref_reloc_sym == NULL ||
kernel_kmap->ref_reloc_sym->addr == 0))) {
- const struct dso *kdso = kernel_map->dso;
+ const char *desc =
+ "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
+ "can't be resolved.";
+
+ if (kernel_map) {
+ const struct dso *kdso = kernel_map->dso;
+ if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) {
+ desc = "If some relocation was applied (e.g. "
+ "kexec) symbols may be misresolved.";
+ }
+ }
ui__warning(
"Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
"Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
"Samples in kernel modules can't be resolved as well.\n\n",
- RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION]) ?
-"As no suitable kallsyms nor vmlinux was found, kernel samples\n"
-"can't be resolved." :
-"If some relocation was applied (e.g. kexec) symbols may be misresolved.");
+ desc);
}
if (dump_trace) {