diff options
Diffstat (limited to 'meta-oe/recipes-support/tbb/tbb/0001-Disable-use-of-_tpause-instruction.patch')
| -rw-r--r-- | meta-oe/recipes-support/tbb/tbb/0001-Disable-use-of-_tpause-instruction.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/meta-oe/recipes-support/tbb/tbb/0001-Disable-use-of-_tpause-instruction.patch b/meta-oe/recipes-support/tbb/tbb/0001-Disable-use-of-_tpause-instruction.patch new file mode 100644 index 0000000000..7a4cc3e4e3 --- /dev/null +++ b/meta-oe/recipes-support/tbb/tbb/0001-Disable-use-of-_tpause-instruction.patch @@ -0,0 +1,34 @@ +From 26bc87fdad9f29c00a5e37d6d9aed7f6dc7ff416 Mon Sep 17 00:00:00 2001 +From: Anuj Mittal <anuj.mittal@intel.com> +Date: Mon, 12 Apr 2021 14:15:53 +0800 +Subject: [PATCH] Disable use of _tpause instruction + +It is assuming right now that WAITPKG instructions are available when using +gcc 11 or clang 12. It's possible that we are building for a +CPU where it's not available - in this case anything older than Alder Lake. + +Disable for now until the detection isn't fixed upstream. + +Upstream-Status: Inappropriate + +Signed-off-by: Anuj Mittal <anuj.mittal@intel.com> +--- + src/tbb/scheduler_common.h | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/src/tbb/scheduler_common.h b/src/tbb/scheduler_common.h +index ee13dbf9..49052001 100644 +--- a/src/tbb/scheduler_common.h ++++ b/src/tbb/scheduler_common.h +@@ -219,7 +219,7 @@ inline void prolonged_pause_impl() { + #endif + + inline void prolonged_pause() { +-#if __TBB_WAITPKG_INTRINSICS_PRESENT && (_WIN32 || _WIN64 || __linux__) && (__TBB_x86_32 || __TBB_x86_64) ++#if 0 + if (governor::wait_package_enabled()) { + std::uint64_t time_stamp = machine_time_stamp(); + // _tpause function directs the processor to enter an implementation-dependent optimized state +-- +2.29.0 + |