From: Philippe Mathieu-Daudé <f4bug@amsat.org>

Add a trace event to see when a guest disable/enable the watchdog.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200617072539.32686-2-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/watchdog/cmsdk-apb-watchdog.c | 1 +
 hw/watchdog/trace-events         | 1 +
 2 files changed, 2 insertions(+)

diff --git a/hw/watchdog/cmsdk-apb-watchdog.c b/hw/watchdog/cmsdk-apb-watchdog.c
index 1541365914e..5bbadadfa68 100644
--- a/hw/watchdog/cmsdk-apb-watchdog.c
+++ b/hw/watchdog/cmsdk-apb-watchdog.c
@@ -225,6 +225,7 @@ static void cmsdk_apb_watchdog_write(void *opaque, hwaddr offset,
         break;
     case A_WDOGLOCK:
         s->lock = (value != WDOG_UNLOCK_VALUE);
+        trace_cmsdk_apb_watchdog_lock(s->lock);
         break;
     case A_WDOGITCR:
         if (s->is_luminary) {
diff --git a/hw/watchdog/trace-events b/hw/watchdog/trace-events
index ab94d7df502..3124ca1f1b6 100644
--- a/hw/watchdog/trace-events
+++ b/hw/watchdog/trace-events
@@ -4,3 +4,4 @@
 cmsdk_apb_watchdog_read(uint64_t offset, uint64_t data, unsigned size) "CMSDK APB watchdog read: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
 cmsdk_apb_watchdog_write(uint64_t offset, uint64_t data, unsigned size) "CMSDK APB watchdog write: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
 cmsdk_apb_watchdog_reset(void) "CMSDK APB watchdog: reset"
+cmsdk_apb_watchdog_lock(uint32_t lock) "CMSDK APB watchdog: lock %" PRIu32
-- 
2.20.1