[Qemu-devel] [PATCH 1/3] qemu-timer: drop outdated signal safety comments

[Stefan Hajnoczi <stefanha@redhat.com>]

host_alarm_handler() may be invoked as a signal handler.  Previously we
did more processing in the signal handler and therefore needed
signal-safe timer code.

Today host_alarm_handler() just marks the alarm timer as expired/pending
and notifies the main loop using qemu_notify_event().

Therefore these outdated comments about signal safety can be dropped.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 qemu-timer.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/qemu-timer.c b/qemu-timer.c
index b2d95e2..4740da9 100644
--- a/qemu-timer.c
+++ b/qemu-timer.c
@@ -300,8 +300,6 @@ void qemu_del_timer(QEMUTimer *ts)
 {
     QEMUTimer **pt, *t;
 
-    /* NOTE: this code must be signal safe because
-       qemu_timer_expired() can be called from a signal. */
     pt = &ts->clock->active_timers;
     for(;;) {
         t = *pt;
@@ -324,8 +322,6 @@ void qemu_mod_timer_ns(QEMUTimer *ts, int64_t expire_time)
     qemu_del_timer(ts);
 
     /* add the timer in the sorted list */
-    /* NOTE: this code must be signal safe because
-       qemu_timer_expired() can be called from a signal. */
     pt = &ts->clock->active_timers;
     for(;;) {
         t = *pt;
-- 
1.8.1.4