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/*
* Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __perfmon_perfmon_h
#define __perfmon_perfmon_h
#include <linux/perf_event.h>
#include <vppinfra/clib.h>
#include <vppinfra/format.h>
#include <vppinfra/error.h>
#include <vppinfra/cpu.h>
#include <vlib/vlib.h>
#define PERF_MAX_EVENTS 8 /* 4 fixed and 8 programmable on ICX */
typedef enum
{
PERFMON_BUNDLE_TYPE_UNKNOWN,
PERFMON_BUNDLE_TYPE_NODE,
PERFMON_BUNDLE_TYPE_THREAD,
PERFMON_BUNDLE_TYPE_SYSTEM,
PERFMON_BUNDLE_TYPE_MAX,
} perfmon_bundle_type_t;
typedef enum
{
PERFMON_OFFSET_TYPE_MMAP,
PERFMON_OFFSET_TYPE_METRICS,
PERFMON_OFFSET_TYPE_MAX,
} perfmon_offset_type_t;
typedef struct
{
u32 type_from_instance : 1;
u32 exclude_kernel : 1;
union
{
u32 type;
u32 instance_type;
};
u64 config;
char *name;
char *description;
} perfmon_event_t;
typedef struct
{
u32 type;
int cpu;
pid_t pid;
char *name;
} perfmon_instance_t;
typedef struct
{
char *name;
perfmon_instance_t *instances;
} perfmon_instance_type_t;
struct perfmon_source;
vlib_node_function_t perfmon_dispatch_wrapper_mmap;
vlib_node_function_t perfmon_dispatch_wrapper_metrics;
#define foreach_permon_offset_type \
_ (PERFMON_OFFSET_TYPE_MMAP, perfmon_dispatch_wrapper_mmap) \
_ (PERFMON_OFFSET_TYPE_METRICS, perfmon_dispatch_wrapper_metrics)
typedef clib_error_t *(perfmon_source_init_fn_t) (vlib_main_t *vm,
struct perfmon_source *);
typedef struct perfmon_source
{
char *name;
char *description;
struct perfmon_source *next;
perfmon_event_t *events;
u32 n_events;
perfmon_instance_type_t *instances_by_type;
format_function_t *format_config;
perfmon_source_init_fn_t *init_fn;
} perfmon_source_t;
struct perfmon_bundle;
typedef clib_error_t *(perfmon_bundle_init_fn_t) (vlib_main_t *vm,
struct perfmon_bundle *);
typedef struct
{
clib_cpu_supports_func_t cpu_supports;
perfmon_bundle_type_t bundle_type;
} perfmon_cpu_supports_t;
typedef struct perfmon_bundle
{
char *name;
char *description;
char *source;
char *footer;
perfmon_bundle_type_t type;
perfmon_offset_type_t offset_type;
u32 events[PERF_MAX_EVENTS];
u32 n_events;
u32 metrics[PERF_MAX_EVENTS];
u32 n_metrics;
perfmon_cpu_supports_t *cpu_supports;
u32 n_cpu_supports;
perfmon_bundle_init_fn_t *init_fn;
char **column_headers;
format_function_t *format_fn;
/* do not set manually */
perfmon_source_t *src;
struct perfmon_bundle *next;
} perfmon_bundle_t;
typedef struct
{
u64 nr;
u64 time_enabled;
u64 time_running;
u64 value[PERF_MAX_EVENTS];
} perfmon_reading_t;
typedef struct
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
u64 n_calls;
u64 n_packets;
union
{
struct
{
u64 value[PERF_MAX_EVENTS];
} t[2];
u64 value[PERF_MAX_EVENTS * 2];
};
} perfmon_node_stats_t;
typedef struct
{
u8 n_events;
u16 n_nodes;
perfmon_node_stats_t *node_stats;
perfmon_bundle_t *bundle;
struct perf_event_mmap_page *mmap_pages[PERF_MAX_EVENTS];
} perfmon_thread_runtime_t;
typedef struct
{
perfmon_thread_runtime_t *thread_runtimes;
perfmon_bundle_t *bundles;
uword *bundle_by_name;
perfmon_source_t *sources;
uword *source_by_name;
perfmon_bundle_t *active_bundle;
int is_running;
f64 sample_time;
int *group_fds;
int *fds_to_close;
perfmon_instance_type_t *default_instance_type;
perfmon_instance_type_t *active_instance_type;
} perfmon_main_t;
extern perfmon_main_t perfmon_main;
always_inline uword
perfmon_cpu_supported_bundle_type (perfmon_bundle_t *b)
{
perfmon_cpu_supports_t *supports = b->cpu_supports;
uword type = 0;
/* if nothing specific for this bundle, go with the default */
if (!supports)
return b->type;
/* the last specified type, will always win */
for (int i = 0; i < b->n_cpu_supports; ++i)
if (supports[i].cpu_supports ())
type = supports[i].bundle_type;
return type;
}
#define PERFMON_REGISTER_SOURCE(x) \
perfmon_source_t __perfmon_source_##x; \
static void __clib_constructor __perfmon_source_registration_##x (void) \
{ \
perfmon_main_t *pm = &perfmon_main; \
__perfmon_source_##x.next = pm->sources; \
pm->sources = &__perfmon_source_##x; \
} \
perfmon_source_t __perfmon_source_##x
#define PERFMON_REGISTER_BUNDLE(x) \
perfmon_bundle_t __perfmon_bundle_##x; \
static void __clib_constructor __perfmon_bundle_registration_##x (void) \
{ \
perfmon_main_t *pm = &perfmon_main; \
__perfmon_bundle_##x.next = pm->bundles; \
__perfmon_bundle_##x.type = \
perfmon_cpu_supported_bundle_type (&__perfmon_bundle_##x); \
pm->bundles = &__perfmon_bundle_##x; \
} \
perfmon_bundle_t __perfmon_bundle_##x
void perfmon_reset (vlib_main_t *vm);
clib_error_t *perfmon_start (vlib_main_t *vm, perfmon_bundle_t *);
clib_error_t *perfmon_stop (vlib_main_t *vm);
#define PERFMON_STRINGS(...) \
(char *[]) { __VA_ARGS__, 0 }
#endif
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