Release 4.14 arch/powerpc/perf/req-gen/perf.h

/* 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>

#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
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) {
#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


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
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Directory: arch/powerpc/perf/req-gen

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