diff options
Diffstat (limited to 'arch/powerpc/perf/req-gen/perf.h')
| -rw-r--r-- | arch/powerpc/perf/req-gen/perf.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/arch/powerpc/perf/req-gen/perf.h b/arch/powerpc/perf/req-gen/perf.h new file mode 100644 index 000000000..6b2a59fef --- /dev/null +++ b/arch/powerpc/perf/req-gen/perf.h @@ -0,0 +1,177 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef LINUX_POWERPC_PERF_REQ_GEN_PERF_H_ +#define LINUX_POWERPC_PERF_REQ_GEN_PERF_H_ + +#include <linux/perf_event.h> +#include <linux/stringify.h> + +#ifndef REQUEST_FILE +#error "REQUEST_FILE must be defined before including" +#endif + +#ifndef NAME_LOWER +#error "NAME_LOWER must be defined before including" +#endif + +#ifndef NAME_UPPER +#error "NAME_UPPER must be defined before including" +#endif + +#define BE_TYPE_b1 __u8 +#define BE_TYPE_b2 __be16 +#define BE_TYPE_b4 __be32 +#define BE_TYPE_b8 __be64 + +#define BYTES_TO_BE_TYPE(bytes) \ + BE_TYPE_b##bytes + +#define CAT2_(a, b) a ## b +#define CAT2(a, b) CAT2_(a, b) +#define CAT3_(a, b, c) a ## b ## c +#define CAT3(a, b, c) CAT3_(a, b, c) + +/* + * enumerate the request values as + * <NAME_UPPER>_<request name> = <request value> + */ +#define REQUEST_VALUE__(name_upper, r_name) name_upper ## _ ## r_name +#define REQUEST_VALUE_(name_upper, r_name) REQUEST_VALUE__(name_upper, r_name) +#define REQUEST_VALUE(r_name) REQUEST_VALUE_(NAME_UPPER, r_name) + +#include "_clear.h" +#define REQUEST_(r_name, r_value, r_idx_1, r_fields) \ + REQUEST_VALUE(r_name) = r_value, +enum CAT2(NAME_LOWER, _requests) { +#include REQUEST_FILE +}; + +/* + * For each request: + * struct <NAME_LOWER>_<request name> { + * r_fields + * }; + */ +#include "_clear.h" +#define STRUCT_NAME__(name_lower, r_name) name_lower ## _ ## r_name +#define STRUCT_NAME_(name_lower, r_name) STRUCT_NAME__(name_lower, r_name) +#define STRUCT_NAME(r_name) STRUCT_NAME_(NAME_LOWER, r_name) +#define REQUEST_(r_name, r_value, r_idx_1, r_fields) \ +struct STRUCT_NAME(r_name) { \ + r_fields \ +}; +#define __field_(r_name, r_value, r_idx_1, f_offset, f_bytes, f_name) \ + BYTES_TO_BE_TYPE(f_bytes) f_name; +#define __count_(r_name, r_value, r_idx_1, f_offset, f_bytes, f_name) \ + __field_(r_name, r_value, r_idx_1, f_offset, f_bytes, f_name) +#define __array_(r_name, r_value, r_idx_1, a_offset, a_bytes, a_name) \ + __u8 a_name[a_bytes]; + +#include REQUEST_FILE + +/* + * Generate a check of the field offsets + * <NAME_LOWER>_assert_offsets_correct() + */ +#include "_clear.h" +#define REQUEST_(r_name, r_value, index, r_fields) \ +r_fields +#define __field_(r_name, r_value, r_idx_1, f_offset, f_size, f_name) \ + BUILD_BUG_ON(offsetof(struct STRUCT_NAME(r_name), f_name) != f_offset); +#define __count_(r_name, r_value, r_idx_1, c_offset, c_size, c_name) \ + __field_(r_name, r_value, r_idx_1, c_offset, c_size, c_name) +#define __array_(r_name, r_value, r_idx_1, a_offset, a_size, a_name) \ + __field_(r_name, r_value, r_idx_1, a_offset, a_size, a_name) + +static inline void CAT2(NAME_LOWER, _assert_offsets_correct)(void) +{ +#include REQUEST_FILE +} + +/* + * Generate event attributes: + * PMU_EVENT_ATTR_STRING(<request name>_<field name>, + * <NAME_LOWER>_event_attr_<request name>_<field name>, + * "request=<request value>" + * "starting_index=<starting index type>" + * "counter_info_version=CURRENT_COUNTER_INFO_VERSION" + * "length=<f_size>" + * "offset=<f_offset>") + * + * TODO: counter_info_version may need to vary, we should interperate the + * value to some extent + */ +#define EVENT_ATTR_NAME__(name, r_name, c_name) \ + name ## _event_attr_ ## r_name ## _ ## c_name +#define EVENT_ATTR_NAME_(name, r_name, c_name) \ + EVENT_ATTR_NAME__(name, r_name, c_name) +#define EVENT_ATTR_NAME(r_name, c_name) \ + EVENT_ATTR_NAME_(NAME_LOWER, r_name, c_name) + +#include "_clear.h" +#define __field_(r_name, r_value, r_idx_1, f_offset, f_size, f_name) +#define __array_(r_name, r_value, r_idx_1, a_offset, a_size, a_name) +#define __count_(r_name, r_value, r_idx_1, c_offset, c_size, c_name) \ +PMU_EVENT_ATTR_STRING( \ + CAT3(r_name, _, c_name), \ + EVENT_ATTR_NAME(r_name, c_name), \ + "request=" __stringify(r_value) "," \ + r_idx_1 "," \ + "counter_info_version=" \ + __stringify(COUNTER_INFO_VERSION_CURRENT) "," \ + "length=" #c_size "," \ + "offset=" #c_offset) +#define REQUEST_(r_name, r_value, r_idx_1, r_fields) \ + r_fields + +#include REQUEST_FILE + +/* + * Define event attribute array + * static struct attribute *hv_gpci_event_attrs[] = { + * &<NAME_LOWER>_event_attr_<request name>_<field name>.attr, + * }; + */ +#include "_clear.h" +#define __field_(r_name, r_value, r_idx_1, f_offset, f_size, f_name) +#define __count_(r_name, r_value, r_idx_1, c_offset, c_size, c_name) \ + &EVENT_ATTR_NAME(r_name, c_name).attr.attr, +#define __array_(r_name, r_value, r_idx_1, a_offset, a_size, a_name) +#define REQUEST_(r_name, r_value, r_idx_1, r_fields) \ + r_fields + +/* Generate event list for platforms with counter_info_version 0x6 or below */ +static __maybe_unused struct attribute *hv_gpci_event_attrs_v6[] = { +#include REQUEST_FILE + NULL +}; + +/* + * Based on getPerfCountInfo v1.018 documentation, some of the hv-gpci + * events were deprecated for platform firmware that supports + * counter_info_version 0x8 or above. + * Those deprecated events are still part of platform firmware that + * support counter_info_version 0x6 and below. As per the getPerfCountInfo + * v1.018 documentation there is no counter_info_version 0x7. + * Undefining macro ENABLE_EVENTS_COUNTERINFO_V6, to disable the addition of + * deprecated events in "hv_gpci_event_attrs" attribute group, for platforms + * that supports counter_info_version 0x8 or above. + */ +#undef ENABLE_EVENTS_COUNTERINFO_V6 + +/* Generate event list for platforms with counter_info_version 0x8 or above*/ +static __maybe_unused struct attribute *hv_gpci_event_attrs[] = { +#include REQUEST_FILE + NULL +}; + +/* cleanup */ +#include "_clear.h" +#undef EVENT_ATTR_NAME +#undef EVENT_ATTR_NAME_ +#undef BIT_NAME +#undef BIT_NAME_ +#undef STRUCT_NAME +#undef REQUEST_VALUE +#undef REQUEST_VALUE_ + +#endif |