diff options
| author | Arnaldo Carvalho de Melo | 2016-05-17 11:56:24 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2016-05-20 11:43:54 -0300 |
| commit | caf8a0d0499792ac1b3f5b0b84e5890df0039cb6 (patch) | |
| tree | 3c45e30c29ada6d50f6a779f50dc65bc2760d47e /tools/perf/util | |
| parent | 45e90056904b12d8dd74e0d2ea6dfd5e4394104d (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')
| -rw-r--r-- | tools/perf/util/machine.c | 1 | ||||
| -rw-r--r-- | tools/perf/util/machine.h | 1 |
2 files changed, 2 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; diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h index 83f46790c52f..41ac9cfd416b 100644 --- a/tools/perf/util/machine.h +++ b/tools/perf/util/machine.h @@ -28,6 +28,7 @@ struct machine { pid_t pid; u16 id_hdr_size; bool comm_exec; + bool kptr_restrict_warned; char *root_dir; struct rb_root threads; pthread_rwlock_t threads_lock; |