diff options
| author | Ben Wolsieffer <ben.wolsieffer@hefring.com> | 2023-11-02 11:48:25 -0400 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2023-11-09 16:48:33 +0100 |
| commit | c303df56d32faa47ef163726357ed3ee5d075b88 (patch) | |
| tree | d00ee1101dd14b5c1bfbd712765a26d56b777845 /extra | |
| parent | 8166707a3350ce1fdaf669fb3836810727379342 (diff) | |
libpthread/nptl: make default stack size configurable
Threads currently have 2-4 MiB stacks by default (depending on the
platform). This is fine on MMU platforms, where this stack space is not
actually allocated until it is used, but tends to waste a large amount
of memory on no-MMU platforms.
This patch adds a PTHREADS_STACK_DEFAULT_SIZE Kconfig option that allows
the user to override the default stack size at build time. This allows
the user to select a reasonable default stack size for the software that
runs on their system, and avoids the need to patch every package to add
calls to pthread_attr_setstacksize().
An alternative to this patch would be to change the hardcoded default
stack size on no-MMU platforms, but it is difficult to choose an
appropriate value because the minimum required stack depends on the
software in use. This would also be a breaking change.
Signed-off-by: Ben Wolsieffer <ben.wolsieffer@hefring.com>
Diffstat (limited to 'extra')
| -rw-r--r-- | extra/Configs/Config.in | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in index 49f561e5e..287db13d2 100644 --- a/extra/Configs/Config.in +++ b/extra/Configs/Config.in @@ -644,6 +644,15 @@ config PTHREADS_DEBUG_SUPPORT If you are doing development and want to debug applications using uClibc's pthread library, answer Y. Otherwise, answer N. +config PTHREADS_STACK_DEFAULT_SIZE + int "Default thread stack size" + default 4194304 if TARGET_alpha # 4 MiB + default 4194304 if TARGET_powerpc # 4 MiB + default 2097152 # 2 MiB + help + Set the default thread stack size. This option is useful on MMU-less + systems where the stack size is fixed and the default stack size may + be excessively large and waste memory. config UCLIBC_HAS_SYSLOG bool "Syslog support" |