[tip:perf/core] perf report: Ignore kptr_restrict when not sampling the kernel

From: tip-bot for Arnaldo Carvalho de Melo
Date: Sat Nov 18 2017 - 03:37:57 EST

Commit-ID: 9c39ed90153d95d362004ed0d5e259ec46af3803
Gitweb: https://git.kernel.org/tip/9c39ed90153d95d362004ed0d5e259ec46af3803
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Tue, 14 Nov 2017 11:12:11 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 16 Nov 2017 14:50:01 -0300

perf report: Ignore kptr_restrict when not sampling the kernel

If none of the evsels has attr.exclude_kernel set to zero, no kernel
samples, so no point in warning the user about problems in processing
kernel samples, as there will be none.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-7dn926v3at8txxkky92aesz2@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
tools/perf/builtin-report.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 1394cd8..af5dd03 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -441,6 +441,9 @@ static void report__warn_kptr_restrict(const struct report *rep)
struct map *kernel_map = machine__kernel_map(&rep->session->machines.host);
struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;

+ if (perf_evlist__exclude_kernel(rep->session->evlist))
+ return;
if (kernel_map == NULL ||
(kernel_map->dso->hit &&
(kernel_kmap->ref_reloc_sym == NULL ||