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-rw-r--r--kernel/events/core.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 4c1ee7f2bebc..882f835a0d85 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -4461,18 +4461,14 @@ perf_output_sample_regs(struct perf_output_handle *handle,
4461} 4461}
4462 4462
4463static void perf_sample_regs_user(struct perf_regs *regs_user, 4463static void perf_sample_regs_user(struct perf_regs *regs_user,
4464 struct pt_regs *regs) 4464 struct pt_regs *regs,
4465 struct pt_regs *regs_user_copy)
4465{ 4466{
4466 if (!user_mode(regs)) { 4467 if (user_mode(regs)) {
4467 if (current->mm) 4468 regs_user->abi = perf_reg_abi(current);
4468 regs = task_pt_regs(current);
4469 else
4470 regs = NULL;
4471 }
4472
4473 if (regs) {
4474 regs_user->abi = perf_reg_abi(current);
4475 regs_user->regs = regs; 4469 regs_user->regs = regs;
4470 } else if (current->mm) {
4471 perf_get_regs_user(regs_user, regs, regs_user_copy);
4476 } else { 4472 } else {
4477 regs_user->abi = PERF_SAMPLE_REGS_ABI_NONE; 4473 regs_user->abi = PERF_SAMPLE_REGS_ABI_NONE;
4478 regs_user->regs = NULL; 4474 regs_user->regs = NULL;
@@ -4951,7 +4947,8 @@ void perf_prepare_sample(struct perf_event_header *header,
4951 } 4947 }
4952 4948
4953 if (sample_type & (PERF_SAMPLE_REGS_USER | PERF_SAMPLE_STACK_USER)) 4949 if (sample_type & (PERF_SAMPLE_REGS_USER | PERF_SAMPLE_STACK_USER))
4954 perf_sample_regs_user(&data->regs_user, regs); 4950 perf_sample_regs_user(&data->regs_user, regs,
4951 &data->regs_user_copy);
4955 4952
4956 if (sample_type & PERF_SAMPLE_REGS_USER) { 4953 if (sample_type & PERF_SAMPLE_REGS_USER) {
4957 /* regs dump ABI info */ 4954 /* regs dump ABI info */