diff options
| author |   Marcel Cornu <marcel.d.cornu@intel.com> | 2023-01-09 23:15:11 +0000 |
|---|---|---|
| committer |   Fan Zhang <fanzhang.oss@gmail.com> | 2023-01-10 16:55:26 +0000 |
| commit | a9e266ea4a8d87eb9383a7fe936426380db9623b (patch) | |
| tree | 271197d989d7c765e06012bb400abe5135796e0c /build | |
| parent | 2b1b1154c41679d43bf9abbaf8787a284b05786b (diff) | |
crypto-ipsecmb: fix perf scaling in ipsecmb v1.3
Type: fix
This patch adds a fix for an issue in the ipsecmb library resulting in
lower than expected performance in multi-threaded scenarios. This is
due to multiple threads writing the same global variable simultaneously.
Signed-off-by: marcel.d.cornu@intel.com
Change-Id: Ibcac321aa40da4b1709198dec3e18226e3891138
Diffstat (limited to 'build')
| -rw-r--r-- | build/external/patches/ipsec-mb_1.3/0001-Fix-for-perf-scaling-on-release-1.3.patch | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/build/external/patches/ipsec-mb_1.3/0001-Fix-for-perf-scaling-on-release-1.3.patch b/build/external/patches/ipsec-mb_1.3/0001-Fix-for-perf-scaling-on-release-1.3.patch new file mode 100644 index 00000000000..6566c36407f --- /dev/null +++ b/build/external/patches/ipsec-mb_1.3/0001-Fix-for-perf-scaling-on-release-1.3.patch @@ -0,0 +1,70 @@ +From 6b941770f0114d42e87875562d5174bc70c5ac65 Mon Sep 17 00:00:00 2001 +From: Pablo de Lara <pablo.de.lara.guarch@intel.com> +Date: Tue, 6 Dec 2022 10:59:35 +0000 +Subject: [PATCH] Fix for perf scaling on release 1.3 + +--- + lib/include/error.h | 10 +++++++--- + lib/include/error.inc | 3 +++ + lib/x86_64/error.c | 2 +- + 3 files changed, 11 insertions(+), 4 deletions(-) + +diff --git a/lib/include/error.h b/lib/include/error.h +index 73d44f51..778df4b1 100644 +--- a/lib/include/error.h ++++ b/lib/include/error.h +@@ -32,7 +32,7 @@ + * declare global variable to store + * process wide error status + */ +-extern int imb_errno; ++extern volatile int imb_errno; + + /** + * @brief API to set error status +@@ -47,8 +47,12 @@ void imb_set_errno(IMB_MGR *mb_mgr, const int errnum) + if (mb_mgr != NULL) + mb_mgr->imb_errno = errnum; + +- /* set global error status */ +- imb_errno = errnum; ++ /* ++ * set global error status ++ * (only if different, to limit unneeded stores) ++ */ ++ if (imb_errno != errnum) ++ imb_errno = errnum; + } + + #endif /* ERROR_H */ +diff --git a/lib/include/error.inc b/lib/include/error.inc +index 54df265f..5ea53a59 100644 +--- a/lib/include/error.inc ++++ b/lib/include/error.inc +@@ -103,7 +103,10 @@ SET_ERRNO_TYPES \ + ;; Reset global imb_errno to 0 + %macro IMB_ERR_CHECK_RESET 0 + ++ cmp dword [rel imb_errno], 0 ++ jz %%do_not_reset + mov dword [rel imb_errno], 0 ++%%do_not_reset: + %endmacro + + ;; Set GP reg and global imb_errno to 0 +diff --git a/lib/x86_64/error.c b/lib/x86_64/error.c +index 19189093..24dcded3 100644 +--- a/lib/x86_64/error.c ++++ b/lib/x86_64/error.c +@@ -39,7 +39,7 @@ + #pragma warning(disable : 4996) + #endif + +-IMB_DLL_LOCAL int imb_errno; ++IMB_DLL_LOCAL volatile int imb_errno; + IMB_DLL_LOCAL const int imb_errno_types[] = { + IMB_ERR_NULL_MBMGR, + IMB_ERR_JOB_NULL_SRC, +-- +2.34.1 + |