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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.
*/
#include <vnet/vnet.h>
#include <perfmon/perfmon.h>
#include <perfmon/intel/core.h>
static u8 *
format_load_blocks (u8 *s, va_list *args)
{
perfmon_node_stats_t *ns = va_arg (*args, perfmon_node_stats_t *);
int row = va_arg (*args, int);
switch (row)
{
case 0:
s = format (s, "%12lu", ns->n_calls);
break;
case 1:
s = format (s, "%12lu", ns->n_packets);
break;
case 2:
s = format (s, "%9.2f", (f64) ns->value[0] / ns->n_calls);
break;
case 3:
s = format (s, "%9.2f", (f64) ns->value[1] / ns->n_calls);
break;
case 4:
s = format (s, "%9.2f", (f64) ns->value[2] / ns->n_calls);
break;
}
return s;
}
PERFMON_REGISTER_BUNDLE (load_blocks) = {
.name = "load-blocks",
.description = "load operations blocked due to various uarch reasons",
.source = "intel-core",
.type = PERFMON_BUNDLE_TYPE_NODE,
.events[0] = INTEL_CORE_E_LD_BLOCKS_STORE_FORWARD,
.events[1] = INTEL_CORE_E_LD_BLOCKS_NO_SR,
.events[2] = INTEL_CORE_E_LD_BLOCKS_PARTIAL_ADDRESS_ALIAS,
.n_events = 3,
.format_fn = format_load_blocks,
.column_headers = PERFMON_STRINGS ("Calls", "Packets", "[1]", "[2]", "[3]"),
.footer = "Per node call statistics:\n"
"[1] Loads blocked due to overlapping with a preceding store that "
"cannot be forwarded.\n"
"[2] The number of times that split load operations are "
"temporarily blocked because\n"
" all resources for handling the split accesses are in use\n"
"[3] False dependencies in Memory Order Buffer (MOB) due to "
"partial compare on address.\n",
};
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