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03f7c1d2a4
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.
Fix the hv_gpci event list by adding a new attribute group
called "hv_gpci_event_attrs_v6" and a "ENABLE_EVENTS_COUNTERINFO_V6"
macro to enable these events for platform firmware
that supports counter_info_version 0x6 or below. And assigning
the hv_gpci event list based on output counter info version
of underlying plaform.
Fixes: 97bf264018 ("powerpc/perf/hv-gpci: add the remaining gpci requests")
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Reviewed-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Reviewed-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221130174513.87501-1-kjain@linux.ibm.com
178 lines
5.5 KiB
C
178 lines
5.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef LINUX_POWERPC_PERF_REQ_GEN_PERF_H_
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#define LINUX_POWERPC_PERF_REQ_GEN_PERF_H_
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#include <linux/perf_event.h>
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#include <linux/stringify.h>
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#ifndef REQUEST_FILE
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#error "REQUEST_FILE must be defined before including"
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#endif
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#ifndef NAME_LOWER
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#error "NAME_LOWER must be defined before including"
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#endif
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#ifndef NAME_UPPER
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#error "NAME_UPPER must be defined before including"
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#endif
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#define BE_TYPE_b1 __u8
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#define BE_TYPE_b2 __be16
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#define BE_TYPE_b4 __be32
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#define BE_TYPE_b8 __be64
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#define BYTES_TO_BE_TYPE(bytes) \
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BE_TYPE_b##bytes
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#define CAT2_(a, b) a ## b
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#define CAT2(a, b) CAT2_(a, b)
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#define CAT3_(a, b, c) a ## b ## c
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#define CAT3(a, b, c) CAT3_(a, b, c)
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/*
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* enumerate the request values as
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* <NAME_UPPER>_<request name> = <request value>
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*/
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#define REQUEST_VALUE__(name_upper, r_name) name_upper ## _ ## r_name
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#define REQUEST_VALUE_(name_upper, r_name) REQUEST_VALUE__(name_upper, r_name)
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#define REQUEST_VALUE(r_name) REQUEST_VALUE_(NAME_UPPER, r_name)
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#include "_clear.h"
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#define REQUEST_(r_name, r_value, r_idx_1, r_fields) \
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REQUEST_VALUE(r_name) = r_value,
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enum CAT2(NAME_LOWER, _requests) {
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#include REQUEST_FILE
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};
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/*
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* For each request:
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* struct <NAME_LOWER>_<request name> {
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* r_fields
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* };
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*/
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#include "_clear.h"
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#define STRUCT_NAME__(name_lower, r_name) name_lower ## _ ## r_name
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#define STRUCT_NAME_(name_lower, r_name) STRUCT_NAME__(name_lower, r_name)
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#define STRUCT_NAME(r_name) STRUCT_NAME_(NAME_LOWER, r_name)
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#define REQUEST_(r_name, r_value, r_idx_1, r_fields) \
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struct STRUCT_NAME(r_name) { \
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r_fields \
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};
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#define __field_(r_name, r_value, r_idx_1, f_offset, f_bytes, f_name) \
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BYTES_TO_BE_TYPE(f_bytes) f_name;
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#define __count_(r_name, r_value, r_idx_1, f_offset, f_bytes, f_name) \
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__field_(r_name, r_value, r_idx_1, f_offset, f_bytes, f_name)
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#define __array_(r_name, r_value, r_idx_1, a_offset, a_bytes, a_name) \
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__u8 a_name[a_bytes];
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#include REQUEST_FILE
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/*
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* Generate a check of the field offsets
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* <NAME_LOWER>_assert_offsets_correct()
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*/
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#include "_clear.h"
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#define REQUEST_(r_name, r_value, index, r_fields) \
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r_fields
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#define __field_(r_name, r_value, r_idx_1, f_offset, f_size, f_name) \
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BUILD_BUG_ON(offsetof(struct STRUCT_NAME(r_name), f_name) != f_offset);
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#define __count_(r_name, r_value, r_idx_1, c_offset, c_size, c_name) \
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__field_(r_name, r_value, r_idx_1, c_offset, c_size, c_name)
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#define __array_(r_name, r_value, r_idx_1, a_offset, a_size, a_name) \
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__field_(r_name, r_value, r_idx_1, a_offset, a_size, a_name)
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static inline void CAT2(NAME_LOWER, _assert_offsets_correct)(void)
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{
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#include REQUEST_FILE
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}
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/*
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* Generate event attributes:
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* PMU_EVENT_ATTR_STRING(<request name>_<field name>,
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* <NAME_LOWER>_event_attr_<request name>_<field name>,
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* "request=<request value>"
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* "starting_index=<starting index type>"
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* "counter_info_version=CURRENT_COUNTER_INFO_VERSION"
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* "length=<f_size>"
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* "offset=<f_offset>")
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*
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* TODO: counter_info_version may need to vary, we should interperate the
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* value to some extent
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*/
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#define EVENT_ATTR_NAME__(name, r_name, c_name) \
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name ## _event_attr_ ## r_name ## _ ## c_name
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#define EVENT_ATTR_NAME_(name, r_name, c_name) \
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EVENT_ATTR_NAME__(name, r_name, c_name)
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#define EVENT_ATTR_NAME(r_name, c_name) \
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EVENT_ATTR_NAME_(NAME_LOWER, r_name, c_name)
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#include "_clear.h"
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#define __field_(r_name, r_value, r_idx_1, f_offset, f_size, f_name)
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#define __array_(r_name, r_value, r_idx_1, a_offset, a_size, a_name)
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#define __count_(r_name, r_value, r_idx_1, c_offset, c_size, c_name) \
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PMU_EVENT_ATTR_STRING( \
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CAT3(r_name, _, c_name), \
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EVENT_ATTR_NAME(r_name, c_name), \
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"request=" __stringify(r_value) "," \
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r_idx_1 "," \
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"counter_info_version=" \
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__stringify(COUNTER_INFO_VERSION_CURRENT) "," \
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"length=" #c_size "," \
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"offset=" #c_offset)
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#define REQUEST_(r_name, r_value, r_idx_1, r_fields) \
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r_fields
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#include REQUEST_FILE
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/*
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* Define event attribute array
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* static struct attribute *hv_gpci_event_attrs[] = {
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* &<NAME_LOWER>_event_attr_<request name>_<field name>.attr,
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* };
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*/
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#include "_clear.h"
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#define __field_(r_name, r_value, r_idx_1, f_offset, f_size, f_name)
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#define __count_(r_name, r_value, r_idx_1, c_offset, c_size, c_name) \
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&EVENT_ATTR_NAME(r_name, c_name).attr.attr,
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#define __array_(r_name, r_value, r_idx_1, a_offset, a_size, a_name)
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#define REQUEST_(r_name, r_value, r_idx_1, r_fields) \
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r_fields
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/* Generate event list for platforms with counter_info_version 0x6 or below */
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static __maybe_unused struct attribute *hv_gpci_event_attrs_v6[] = {
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#include REQUEST_FILE
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NULL
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};
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/*
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* Based on getPerfCountInfo v1.018 documentation, some of the hv-gpci
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* events were deprecated for platform firmware that supports
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* counter_info_version 0x8 or above.
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* Those deprecated events are still part of platform firmware that
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* support counter_info_version 0x6 and below. As per the getPerfCountInfo
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* v1.018 documentation there is no counter_info_version 0x7.
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* Undefining macro ENABLE_EVENTS_COUNTERINFO_V6, to disable the addition of
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* deprecated events in "hv_gpci_event_attrs" attribute group, for platforms
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* that supports counter_info_version 0x8 or above.
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*/
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#undef ENABLE_EVENTS_COUNTERINFO_V6
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/* Generate event list for platforms with counter_info_version 0x8 or above*/
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static __maybe_unused struct attribute *hv_gpci_event_attrs[] = {
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#include REQUEST_FILE
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NULL
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};
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/* cleanup */
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#include "_clear.h"
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#undef EVENT_ATTR_NAME
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#undef EVENT_ATTR_NAME_
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#undef BIT_NAME
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#undef BIT_NAME_
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#undef STRUCT_NAME
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#undef REQUEST_VALUE
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#undef REQUEST_VALUE_
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#endif
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