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/*
* Copyright (c) 2021 Intel 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.
*/
#include <vnet/vnet.h>
#include <perfmon/perfmon.h>
#include <perfmon/intel/core.h>
typedef enum
{
TOPDOWN_E_RETIRING = 0,
TOPDOWN_E_BAD_SPEC,
TOPDOWN_E_FE_BOUND,
TOPDOWN_E_BE_BOUND,
TOPDOWN_E_MAX,
} topdown_lvl1_t;
static u8 *
format_topdown_lvl1 (u8 *s, va_list *args)
{
perfmon_reading_t *ss = va_arg (*args, perfmon_reading_t *);
u64 idx = va_arg (*args, int);
f64 sv = 0;
u64 total = 0;
for (int i = 0; i < TOPDOWN_E_MAX; i++)
total += ss->value[i];
switch (idx)
{
case 0:
sv = (f64) ss->value[TOPDOWN_E_RETIRING] + ss->value[TOPDOWN_E_BAD_SPEC];
break;
case 1:
sv = (f64) ss->value[TOPDOWN_E_FE_BOUND] + ss->value[TOPDOWN_E_BE_BOUND];
break;
default:
sv = (f64) ss->value[idx - 2];
break;
}
sv = (sv / total) * 100;
s = format (s, "%f", sv);
return s;
}
static int
is_tremont ()
{
return clib_cpu_supports_movdir64b () && !clib_cpu_supports_avx2 ();
}
static perfmon_cpu_supports_t topdown_lvl1_cpu_supports[] = {
{ is_tremont, PERFMON_BUNDLE_TYPE_THREAD }
};
PERFMON_REGISTER_BUNDLE (topdown_lvl1_tremont) = {
.name = "topdown-level1",
.description = "Top-down Microarchitecture Analysis Level 1",
.source = "intel-core",
.events[0] = INTEL_CORE_E_TOPDOWN_L1_RETIRING_TREMONT,
.events[1] = INTEL_CORE_E_TOPDOWN_L1_BAD_SPEC_TREMONT,
.events[2] = INTEL_CORE_E_TOPDOWN_L1_FE_BOUND_TREMONT,
.events[3] = INTEL_CORE_E_TOPDOWN_L1_BE_BOUND_TREMONT,
.n_events = 4,
.cpu_supports = topdown_lvl1_cpu_supports,
.n_cpu_supports = ARRAY_LEN (topdown_lvl1_cpu_supports),
.format_fn = format_topdown_lvl1,
.column_headers = PERFMON_STRINGS ("% NS", "% ST", "% NS.RT", "% NS.BS",
"% ST.FE", "% ST.BE"),
.footer = "Not Stalled (NS),STalled (ST),\n"
" Retiring (RT), Bad Speculation (BS),\n"
" FrontEnd bound (FE), BackEnd bound (BE)",
};
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