From a96c7093512a0923ee7536c3c5b3517b352fc675 Mon Sep 17 00:00:00 2001
From: Cpasjuste <cpasjuste@gmail.com>
Date: Tue, 2 Oct 2018 14:54:51 +0200
Subject: [PATCH] switch: increase thread stack size (fix a lot of stuff)
 switch: enable load balancing across cores (@fincs)

---
 src/thread/switch/SDL_systhread.c | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/src/thread/switch/SDL_systhread.c b/src/thread/switch/SDL_systhread.c
index 4ea162ae1..95875012d 100644
--- a/src/thread/switch/SDL_systhread.c
+++ b/src/thread/switch/SDL_systhread.c
@@ -31,7 +31,7 @@
 #include "SDL_thread.h"
 #include "../SDL_systhread.h"
 
-#define STACK_SIZE 0x5000
+#define STACK_SIZE 0x20000
 
 static void
 SDL_SYS_RunThread(void *data)
@@ -41,13 +41,28 @@ SDL_SYS_RunThread(void *data)
 
 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
 {
-    Result res = threadCreate(&thread->handle, SDL_SYS_RunThread, args, STACK_SIZE, 0x2C, -2);
-    if (res != 0) {
+    Result res;
+    u64 core_mask = 0;
+
+    res = svcGetInfo(&core_mask, 0, CUR_PROCESS_HANDLE, 0);
+    if (R_FAILED(res)) {
+        return SDL_SetError("svcGetInfo() failed: 0x%08X", res);
+    }
+
+    res = threadCreate(&thread->handle, SDL_SYS_RunThread, args, STACK_SIZE, 0x2C, -2);
+    if (R_FAILED(res)) {
+        return SDL_SetError("threadCreate() failed: 0x%08X", res);
+    }
+
+    res = svcSetThreadCoreMask(thread->handle.handle, -1, (u32) core_mask);
+    if (R_FAILED(res)) {
+        threadClose(&thread->handle);
         return SDL_SetError("threadCreate() failed: 0x%08X", res);
     }
 
     res = threadStart(&thread->handle);
-    if (res != 0) {
+    if (R_FAILED(res)) {
+        threadClose(&thread->handle);
         return SDL_SetError("threadStart() failed: 0x%08X", res);
     }