timer.c: make timers thread safe
This is implicitly used by the libosmocore select abstraction, which
might be used in multiple threads at the same time.
Change-Id: I5a3802c94af6ff0315f1553f20870342d51ce726
diff --git a/src/timer.c b/src/timer.c
index 0b2e3dd..d3129a7 100644
--- a/src/timer.c
+++ b/src/timer.c
@@ -40,10 +40,10 @@
#include <osmocom/core/linuxlist.h>
/* These store the amount of time that we wait until next timer expires. */
-static struct timeval nearest;
-static struct timeval *nearest_p;
+static __thread struct timeval nearest;
+static __thread struct timeval *nearest_p;
-static struct rb_root timer_root = RB_ROOT;
+static __thread struct rb_root timer_root = RB_ROOT;
static void __add_timer(struct osmo_timer_list *timer)
{