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kernel: limit thread local storage to Zephyr SDK

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Toolchains other than Zephyr SDK may not support generating
code with thread local storage. So limit TLS to Zephyr SDK
for now, and only enable TLS on other toolchains as needed.

Fixes #29541

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This commit is contained in:
Daniel Leung 2020-10-27 10:50:10 -07:00 • committed by Carles Cufí
commit 2d152ab019
1 changed files with 8 additions and 1 deletions
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9
kernel/Kconfig
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@ -861,9 +861,16 @@ config TICKLESS_KERNEL
This option enables a fully event driven kernel. Periodic system
clock interrupt generation would be stopped at all times.
config TOOLCHAIN_SUPPORTS_THREAD_LOCAL_STORAGE
bool
default y if "$(ZEPHYR_TOOLCHAIN_VARIANT)" = "zephyr"
help
Hidden option to signal that toolchain supports generating code
with thread local storage.
config THREAD_LOCAL_STORAGE
bool "Thread Local Storage (TLS)"
depends on ARCH_HAS_THREAD_LOCAL_STORAGE
depends on ARCH_HAS_THREAD_LOCAL_STORAGE && TOOLCHAIN_SUPPORTS_THREAD_LOCAL_STORAGE
select NEED_LIBC_MEM_PARTITION if (CPU_CORTEX_M && USERSPACE)
help
This option enables thread local storage (TLS) support in kernel.