[sysprof] preload: setup cache size for libunwind

[Christian Hergert <chergert src gnome org>]

commit ebeba626693df7862f5487d8e5bfe271045c8fe2
Author: Christian Hergert <chergert redhat com>
Date:   Mon Feb 17 12:03:02 2020 -0800

    preload: setup cache size for libunwind

 src/libsysprof/preload/sysprof-memory-collector.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/libsysprof/preload/sysprof-memory-collector.c 
b/src/libsysprof/preload/sysprof-memory-collector.c
index 232c9dd..27b8b40 100644
--- a/src/libsysprof/preload/sysprof-memory-collector.c
+++ b/src/libsysprof/preload/sysprof-memory-collector.c
@@ -64,6 +64,7 @@ collector_init_ctor (void)
 {
 #if ENABLE_LIBUNWIND
   unw_set_caching_policy (unw_local_addr_space, UNW_CACHE_PER_THREAD);
+  unw_set_cache_size (unw_local_addr_space, 1024, 0);
 #endif
   sysprof_collector_init ();
   collector_ready = TRUE;