-----Original Message-----
From: Don Wallwork <d...@xsightlabs.com>
Sent: Monday, May 2, 2022 22:11
To: dev@dpdk.org
Cc: d...@xsightlabs.com; step...@networkplumber.org;
m...@smartsharesystems.com; Burakov, Anatoly
<anatoly.bura...@intel.com>; dmitry.kozl...@gmail.com; Richardson, Bruce
<bruce.richard...@intel.com>;
honnappa.nagaraha...@arm.com; n...@arm.com
Subject: [PATCH] eal: allow worker lcore stacks to be allocated from hugepage
memory
Add support for using hugepages for worker lcore stack memory. The
intent is to improve performance by reducing stack memory related TLB
misses and also by using memory local to the NUMA node of each lcore.
EAL option '--huge-worker-stack [stack-size-kbytes]' is added to allow
the feature to be enabled at runtime. If the size is not specified,
the system pthread stack size will be used.
Signed-off-by: Don Wallwork <d...@xsightlabs.com>
---
lib/eal/common/eal_common_options.c | 31 ++++++++++++++
lib/eal/common/eal_internal_cfg.h | 4 ++
lib/eal/common/eal_options.h | 2 +
lib/eal/linux/eal.c | 65 ++++++++++++++++++++++++++++-
4 files changed, 100 insertions(+), 2 deletions(-)
diff --git a/lib/eal/common/eal_common_options.c
b/lib/eal/common/eal_common_options.c
index f247a42455..be9db9ee37 100644
--- a/lib/eal/common/eal_common_options.c
+++ b/lib/eal/common/eal_common_options.c
@@ -103,6 +103,7 @@ eal_long_options[] = {
{OPT_TELEMETRY, 0, NULL, OPT_TELEMETRY_NUM },
{OPT_NO_TELEMETRY, 0, NULL, OPT_NO_TELEMETRY_NUM },
{OPT_FORCE_MAX_SIMD_BITWIDTH, 1, NULL, OPT_FORCE_MAX_SIMD_BITWIDTH_NUM},
+ {OPT_HUGE_WORKER_STACK, 2, NULL, OPT_HUGE_WORKER_STACK_NUM },
{0, 0, NULL, 0 }
};
@@ -1618,6 +1619,22 @@ eal_parse_huge_unlink(const char *arg, struct
hugepage_file_discipline *out)
return -1;
}
+static int
+eal_parse_huge_worker_stack(const char *arg, size_t *huge_worker_stack_size)
+{
+ size_t worker_stack_size;
+ if (arg == NULL) {
+ *huge_worker_stack_size = USE_OS_STACK_SIZE;
+ return 0;
+ }
+ worker_stack_size = atoi(arg);
+ if (worker_stack_size == 0)
+ return -1;