diff options
Diffstat (limited to 'tools/perf/util/event.c')
| -rw-r--r-- | tools/perf/util/event.c | 45 |
1 files changed, 27 insertions, 18 deletions
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 1023f67633a..3c1b8a63210 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -9,21 +9,21 @@ #include "thread_map.h" static const char *perf_event__names[] = { - [0] = "TOTAL", - [PERF_RECORD_MMAP] = "MMAP", - [PERF_RECORD_LOST] = "LOST", - [PERF_RECORD_COMM] = "COMM", - [PERF_RECORD_EXIT] = "EXIT", - [PERF_RECORD_THROTTLE] = "THROTTLE", - [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", - [PERF_RECORD_FORK] = "FORK", - [PERF_RECORD_READ] = "READ", - [PERF_RECORD_SAMPLE] = "SAMPLE", - [PERF_RECORD_HEADER_ATTR] = "ATTR", - [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", - [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", - [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", - [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", + [0] = "TOTAL", + [PERF_RECORD_MMAP] = "MMAP", + [PERF_RECORD_LOST] = "LOST", + [PERF_RECORD_COMM] = "COMM", + [PERF_RECORD_EXIT] = "EXIT", + [PERF_RECORD_THROTTLE] = "THROTTLE", + [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", + [PERF_RECORD_FORK] = "FORK", + [PERF_RECORD_READ] = "READ", + [PERF_RECORD_SAMPLE] = "SAMPLE", + [PERF_RECORD_HEADER_ATTR] = "ATTR", + [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", + [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", + [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", + [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", }; const char *perf_event__name(unsigned int id) @@ -537,9 +537,18 @@ static int perf_event__process_kernel_mmap(union perf_event *event, goto out_problem; perf_event__set_kernel_mmap_len(event, machine->vmlinux_maps); - perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, - symbol_name, - event->mmap.pgoff); + + /* + * Avoid using a zero address (kptr_restrict) for the ref reloc + * symbol. Effectively having zero here means that at record + * time /proc/sys/kernel/kptr_restrict was non zero. + */ + if (event->mmap.pgoff != 0) { + perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, + symbol_name, + event->mmap.pgoff); + } + if (machine__is_default_guest(machine)) { /* * preload dso of guest kernel and modules |