From 590258b3814ef0eac8a84b7b0906caf518096573 Mon Sep 17 00:00:00 2001
From: Jordan Yates <jordan@embeint.com>
Date: Sat, 12 Apr 2025 16:00:19 +1000
Subject: [PATCH] posix: options: `POSIX_THREADS` require a stack

`pthread_setspecific` requires a stack in order to allocate the
`struct pthread_key_data` data structure. On 64 bit systems this data
structure is 32 bytes, resulting in 160 bytes usage for the default 5
supported threads.

Signed-off-by: Jordan Yates <jordan@embeint.com>
---
 lib/posix/options/Kconfig.pthread | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/posix/options/Kconfig.pthread b/lib/posix/options/Kconfig.pthread
index 4eef794039a..438506fe218 100644
--- a/lib/posix/options/Kconfig.pthread
+++ b/lib/posix/options/Kconfig.pthread
@@ -15,6 +15,9 @@ menuconfig POSIX_THREADS
 
 if POSIX_THREADS
 
+config HEAP_MEM_POOL_ADD_SIZE_POSIX_THREADS
+	def_int 256
+
 config POSIX_THREAD_THREADS_MAX
 	int "Maximum number of POSIX threads"
 	default 5