From: Chao Zhu <chaozhu@linux.vnet.ibm.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH 1/2] Fix CPU and memory parameters on IBM POWER8
Date: Fri, 25 Mar 2016 16:11:52 +0800 [thread overview]
Message-ID: <1458893513-22406-2-git-send-email-chaozhu@linux.vnet.ibm.com> (raw)
In-Reply-To: <1458893513-22406-1-git-send-email-chaozhu@linux.vnet.ibm.com>
This patch fixes the max logic number and memory channel number settings
on IBM POWER8 platform.
1. The max number of logic cores of a POWER8 processor is 96. Normally,
there are two sockets on a server. So the max number of logic cores
are 192. So this parch set CONFIG_RTE_MAX_LCORE to 256.
2. Currently, the max number of memory channels are hardcoded to 4. However,
on a POWER8 machine, the max number of memory channels are 8. To fix this,
CONFIG_RTE_MAX_NCHANNELS is added to do the configuration.
Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
config/common_base | 3 ++-
lib/librte_eal/common/eal_common_options.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/config/common_base b/config/common_base
index dbd405b..1beea32 100644
--- a/config/common_base
+++ b/config/common_base
@@ -83,10 +83,11 @@ CONFIG_RTE_CACHE_LINE_SIZE=64
# Compile Environment Abstraction Layer
#
CONFIG_RTE_LIBRTE_EAL=y
-CONFIG_RTE_MAX_LCORE=128
+CONFIG_RTE_MAX_LCORE=256
CONFIG_RTE_MAX_NUMA_NODES=8
CONFIG_RTE_MAX_MEMSEG=256
CONFIG_RTE_MAX_MEMZONE=2560
+CONFIG_RTE_MAX_NCHANNELS=8
CONFIG_RTE_MAX_TAILQ=32
CONFIG_RTE_LOG_LEVEL=8
CONFIG_RTE_LOG_HISTORY=256
diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 29942ea..6c268c1 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -798,7 +798,7 @@ eal_parse_common_option(int opt, const char *optarg,
case 'n':
conf->force_nchannel = atoi(optarg);
if (conf->force_nchannel == 0 ||
- conf->force_nchannel > 4) {
+ conf->force_nchannel > RTE_MAX_NCHANNELS) {
RTE_LOG(ERR, EAL, "invalid channel number\n");
return -1;
}
--
1.7.1
next prev parent reply other threads:[~2016-03-25 8:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-25 8:11 [dpdk-dev] [PATCH 0/2] Fix parameters and prefetch function " Chao Zhu
2016-03-25 8:11 ` Chao Zhu [this message]
2016-03-25 8:48 ` [dpdk-dev] [PATCH 1/2] Fix CPU and memory parameters " David Marchand
2016-03-30 10:52 ` Thomas Monjalon
2016-03-31 1:44 ` Chao Zhu
2016-03-25 8:11 ` [dpdk-dev] [PATCH 2/2] Fix prefetch instruction " Chao Zhu
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