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authorArnaldo Carvalho de Melo <acme@redhat.com>2016-05-17 11:56:24 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-05-20 11:43:54 -0300
commitcaf8a0d0499792ac1b3f5b0b84e5890df0039cb6 (patch)
tree3c45e30c29ada6d50f6a779f50dc65bc2760d47e /tools/perf/util/machine.c
parent45e90056904b12d8dd74e0d2ea6dfd5e4394104d (diff)
perf trace: Warn when trying to resolve kernel addresses with kptr_restrict=1
Hook into the libtraceevent plugin kernel symbol resolver to warn the user that that can't happen with kptr_restrict=1. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-9gc412xx1gl0lvqj1d1xwlyb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/machine.c')
-rw-r--r--tools/perf/util/machine.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index b277984aaa93..bdc33ce40bdc 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -43,6 +43,7 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
machine->symbol_filter = NULL;
machine->id_hdr_size = 0;
+ machine->kptr_restrict_warned = false;
machine->comm_exec = false;
machine->kernel_start = 0;