diff --git a/meta-oe/dynamic-layers/meta-python/recipes-dbs/mongodb/mongodb/0001-server-Adjust-the-cache-alignment-assumptions.patch b/meta-oe/dynamic-layers/meta-python/recipes-dbs/mongodb/mongodb/0001-server-Adjust-the-cache-alignment-assumptions.patch new file mode 100644 index 00000000000..bf083c85f40 --- /dev/null +++ b/meta-oe/dynamic-layers/meta-python/recipes-dbs/mongodb/mongodb/0001-server-Adjust-the-cache-alignment-assumptions.patch @@ -0,0 +1,37 @@ +From 5c9e0d0fc9188bab0ae09c9c33df01938b0c1b6c Mon Sep 17 00:00:00 2001 +From: Khem Raj +Date: Thu, 14 Apr 2022 09:25:33 -0700 +Subject: [PATCH] server: Adjust the cache alignment assumptions + +aarch64 has 256 for hardware_destructive_interference_size and gcc 12 +has added a warning to complain about mismatches which results in +static_assert failures + +In file included from src/mongo/s/commands/cluster_find_cmd.cpp:39: +src/mongo/db/stats/counters.h:185:47: error: static assertion failed: cache line spill + 185 | static_assert(sizeof(decltype(_together)) <= stdx::hardware_constructive_interference_size, + | ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +The structure need to ensure true sharing for both the elements +so align it to hardware_constructive_interference_size instead + +Upstream-Status: Reported [https://jira.mongodb.org/browse/SERVER-65664] + +Signed-off-by: Khem Raj +--- + src/mongo/db/stats/counters.h | 6 +++--- + 1 file changed, 3 insertions(+), 3 deletions(-) + +--- a/src/mongo/db/stats/counters.h ++++ b/src/mongo/db/stats/counters.h +@@ -182,8 +182,8 @@ private: + AtomicWord requests{0}; + }; + CacheAligned _together{}; +- static_assert(sizeof(decltype(_together)) <= stdx::hardware_constructive_interference_size, +- "cache line spill"); ++ static_assert(sizeof(Together) <= stdx::hardware_constructive_interference_size, ++ "cache line spill"); + + CacheAligned> _logicalBytesOut{0}; + diff --git a/meta-oe/dynamic-layers/meta-python/recipes-dbs/mongodb/mongodb_git.bb b/meta-oe/dynamic-layers/meta-python/recipes-dbs/mongodb/mongodb_git.bb index 310a0aa38e7..7ea728aad4c 100644 --- a/meta-oe/dynamic-layers/meta-python/recipes-dbs/mongodb/mongodb_git.bb +++ b/meta-oe/dynamic-layers/meta-python/recipes-dbs/mongodb/mongodb_git.bb @@ -31,6 +31,7 @@ SRC_URI = "git://github.com/mongodb/mongo.git;branch=v4.4;protocol=https \ file://ppc64_ARCH_BITS.patch \ file://PTHREAD_STACK_MIN.patch \ file://0001-add-explict-static_cast-size_t-to-maxMemoryUsageByte.patch \ + file://0001-server-Adjust-the-cache-alignment-assumptions.patch \ " SRC_URI:append:libc-musl ="\ file://0001-Mark-one-of-strerror_r-implementation-glibc-specific.patch \