diff options
| -rw-r--r-- | arch/arc/kernel/perf_event.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arc/kernel/perf_event.c b/arch/arc/kernel/perf_event.c index a6ad1e0..109118a 100644 --- a/arch/arc/kernel/perf_event.c +++ b/arch/arc/kernel/perf_event.c @@ -54,6 +54,16 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) arc_unwind_core(NULL, regs, callchain_trace, &ctrl); } +void +perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) +{ + /* + * User stack can't be unwound trivially with kernel dwarf unwinder + * So for now just record the user PC + */ + perf_callchain_store(entry, instruction_pointer(regs)); +} + static struct arc_pmu *arc_pmu; /* read counter #idx; note that counter# != event# on ARC! */ |
