Configure or deduce CLIB_LOG2_CACHE_LINE_BYTES (VPP-1064) - vpp

diff options

author	Dave Barach <dave@barachs.net>	2018-05-29 17:06:45 -0400
committer	Florin Coras <florin.coras@gmail.com>	2018-06-04 22:24:48 +0000
commit	473f46135c3fd77dad5614215cc279b1164e9a74 (patch)
tree	c77881bd8157ce9380d91e94b43463f6c9f712a0 /src/vppinfra.am
parent	1b25552ebb8f653d473bd58a3bf56499701c792d (diff)

Configure or deduce CLIB_LOG2_CACHE_LINE_BYTES (VPP-1064)

Added configure argument "--with-log2-cache-line-bytes=5|6|7|auto" AKA 32, 64, or 128 bytes, or use the inferred value from the build host. produces build-xxx/vpp/vppinfra/config.h, which .../src/vppinfra/cache.h Kernels which implement the following pseudo-file (aka x86_64) are easy: /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size Otherwise, extract the cpuid from /proc/cpuinfo and map it to the cache line size. Change-Id: I7ff861e042faf82c3901fa1db98864fbdea95b74 Signed-off-by: Dave Barach <dave@barachs.net> Signed-off-by: Nitin Saxena <nitin.saxena@cavium.com>

Diffstat (limited to 'src/vppinfra.am')

-rw-r--r--

src/vppinfra.am

1 files changed, 12 insertions, 0 deletions

/*- * BSD LICENSE * * Copyright (c) 2016-2017 Solarflare Communications Inc. * All rights reserved. * * This software was jointly developed between OKTET Labs (under contract * for Solarflare) and Solarflare Communications, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <stdbool.h> #include <strings.h> #include <rte_devargs.h> #include <rte_kvargs.h> #include "sfc.h" #include "sfc_kvargs.h" int sfc_kvargs_parse(struct sfc_adapter *sa) { struct rte_eth_dev *eth_dev = (sa)->eth_dev; struct rte_devargs *devargs = eth_dev->device->devargs; const char **params = (const char *[]){ SFC_KVARG_STATS_UPDATE_PERIOD_MS, SFC_KVARG_DEBUG_INIT, SFC_KVARG_MCDI_LOGGING, SFC_KVARG_PERF_PROFILE, SFC_KVARG_RX_DATAPATH, SFC_KVARG_TX_DATAPATH, NULL, }; if (devargs == NULL) return 0; sa->kvargs = rte_kvargs_parse(devargs->args, params); if (sa->kvargs == NULL) return EINVAL; return 0; } void sfc_kvargs_cleanup(struct sfc_adapter *sa) { rte_kvargs_free(sa->kvargs); } static int sfc_kvarg_match_value(const char *value, const char * const *values, unsigned int n_values) { unsigned int i; for (i = 0; i < n_values; ++i) if (strcasecmp(value, values[i]) == 0) return 1; return 0; } int sfc_kvargs_process(struct sfc_adapter *sa, const char *key_match, arg_handler_t handler, void *opaque_arg) { if (sa->kvargs == NULL) return 0; return -rte_kvargs_process(sa->kvargs, key_match, handler, opaque_arg); } int sfc_kvarg_bool_handler(__rte_unused const char *key, const char *value_str, void *opaque) { const char * const true_strs[] = { "1", "y", "yes", "on", "true" }; const char * const false_strs[] = { "0", "n", "no", "off", "false" }; bool *value = opaque; if (sfc_kvarg_match_value(value_str, true_strs, RTE_DIM(true_strs))) *value = true; else if (sfc_kvarg_match_value(value_str, false_strs, RTE_DIM(false_strs))) *value = false; else return -EINVAL; return 0; } int sfc_kvarg_long_handler(__rte_unused const char *key, const char *value_str, void *opaque) { long value; char *endptr; if (!value_str || !opaque) return -EINVAL; value = strtol(value_str, &endptr, 0); if (endptr == value_str) return -EINVAL; *(long *)opaque = value; return 0; } int sfc_kvarg_string_handler(__rte_unused const char *key, const char *value_str, void *opaque) { *(const char **)opaque = value_str; return 0; }


context:
space:
mode: