Return stack is a programmable option on some ETM and PTM hardware. Adds the option flags to enable this from the perf event command line.
Unified · Split
| @@ -53,10 +53,12 @@ static DEFINE_PER_CPU(struct coresight_device *, csdev_src); · 52 unmodified lines | |||
| 53 | /* ETMv3.5/PTM's ETMCR is 'config' */ | 53 | /* ETMv3.5/PTM's ETMCR is 'config' */ |
| 54 | PMU_FORMAT_ATTR(cycacc, "config:" __stringify(ETM_OPT_CYCACC)); | 54 | PMU_FORMAT_ATTR(cycacc, "config:" __stringify(ETM_OPT_CYCACC)); |
| 55 | PMU_FORMAT_ATTR(timestamp, "config:" __stringify(ETM_OPT_TS)); | 55 | PMU_FORMAT_ATTR(timestamp, "config:" __stringify(ETM_OPT_TS)); |
| 56 | PMU_FORMAT_ATTR(retstack, "config:" __stringify(ETM_OPT_RETSTK)); | ||
| 56 | 57 | ||
| 57 | static struct attribute *etm_config_formats_attr[] = { | 58 | static struct attribute *etm_config_formats_attr[] = { |
| 58 | &format_attr_cycacc.attr, | 59 | &format_attr_cycacc.attr, |
| 59 | &format_attr_timestamp.attr, | 60 | &format_attr_timestamp.attr, |
| 61 | &format_attr_retstack.attr, | ||
| 60 | NULL, | 62 | NULL, |
| 61 | }; | 63 | }; |
| 62 | 64 | ||
| @@ -24,6 +24,7 @@ · 23 unmodified lines | |||
| 24 | /* ETMv3.5/PTM's ETMCR config bit */ | 24 | /* ETMv3.5/PTM's ETMCR config bit */ |
| 25 | #define ETM_OPT_CYCACC 12 | 25 | #define ETM_OPT_CYCACC 12 |
| 26 | #define ETM_OPT_TS 28 | 26 | #define ETM_OPT_TS 28 |
| 27 | #define ETM_OPT_RETSTK 29 | ||
| 27 | 28 | ||
| 28 | static inline int coresight_get_trace_id(int cpu) | 29 | static inline int coresight_get_trace_id(int cpu) |
| 29 | { | 30 | { |
| @@ -24,6 +24,7 @@ · 23 unmodified lines | |||
| 24 | /* ETMv3.5/PTM's ETMCR config bit */ | 24 | /* ETMv3.5/PTM's ETMCR config bit */ |
| 25 | #define ETM_OPT_CYCACC 12 | 25 | #define ETM_OPT_CYCACC 12 |
| 26 | #define ETM_OPT_TS 28 | 26 | #define ETM_OPT_TS 28 |
| 27 | #define ETM_OPT_RETSTK 29 | ||
| 27 | 28 | ||
| 28 | static inline int coresight_get_trace_id(int cpu) | 29 | static inline int coresight_get_trace_id(int cpu) |
| 29 | { | 30 | { |