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authorBen Wolsieffer <ben.wolsieffer@hefring.com>2023-11-02 11:48:25 -0400
committerWaldemar Brodkorb <wbx@openadk.org>2023-11-09 16:48:33 +0100
commitc303df56d32faa47ef163726357ed3ee5d075b88 (patch)
treed00ee1101dd14b5c1bfbd712765a26d56b777845 /libpthread/nptl/sysdeps/i386/pthreaddef.h
parent8166707a3350ce1fdaf669fb3836810727379342 (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 'libpthread/nptl/sysdeps/i386/pthreaddef.h')
-rw-r--r--libpthread/nptl/sysdeps/i386/pthreaddef.h3
1 files changed, 0 insertions, 3 deletions
diff --git a/libpthread/nptl/sysdeps/i386/pthreaddef.h b/libpthread/nptl/sysdeps/i386/pthreaddef.h
index a0659039d..2fd27113c 100644
--- a/libpthread/nptl/sysdeps/i386/pthreaddef.h
+++ b/libpthread/nptl/sysdeps/i386/pthreaddef.h
@@ -16,9 +16,6 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-/* Default stack size. */
-#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024)
-
/* Required stack pointer alignment at beginning. SSE requires 16
bytes. */
#define STACK_ALIGN 16