From mboxrd@z Thu Jan  1 00:00:00 1970
From: hongzha1 <hongzhan.chen@intel.com>
Subject: [PATCH 2/5] cobalt/rtdm: add interface to init timer on specified cpu
Date: Sat, 20 Feb 2021 00:53:08 -0500
Message-Id: <20210220055311.23826-2-hongzhan.chen@intel.com>
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Initialise timer on specified cpu

Signed-off-by: hongzha1 <hongzhan.chen@intel.com>

diff --git a/include/cobalt/kernel/rtdm/driver.h b/include/cobalt/kernel/rtdm/driver.h
index 6cdace324..6a431e7c5 100644
--- a/include/cobalt/kernel/rtdm/driver.h
+++ b/include/cobalt/kernel/rtdm/driver.h
@@ -966,6 +966,9 @@ enum rtdm_timer_mode {
 int rtdm_timer_init(rtdm_timer_t *timer, rtdm_timer_handler_t handler,
 		    const char *name);
 
+int rtdm_timer_init_on_cpu(rtdm_timer_t *timer, rtdm_timer_handler_t handler,
+		    const char *name, int cpu);
+
 void rtdm_timer_destroy(rtdm_timer_t *timer);
 
 int rtdm_timer_start(rtdm_timer_t *timer, nanosecs_abs_t expiry,
diff --git a/kernel/cobalt/rtdm/drvlib.c b/kernel/cobalt/rtdm/drvlib.c
index 7452850b7..e6145b353 100644
--- a/kernel/cobalt/rtdm/drvlib.c
+++ b/kernel/cobalt/rtdm/drvlib.c
@@ -601,6 +601,34 @@ int rtdm_timer_init(rtdm_timer_t *timer, rtdm_timer_handler_t handler,
 
 EXPORT_SYMBOL_GPL(rtdm_timer_init);
 
+/**
+ * @brief Initialise a timer on specified cpu
+ *
+ * @param[in,out] timer Timer handle
+ * @param[in] handler Handler to be called on timer expiry
+ * @param[in] name Optional timer name
+ * @param[in] cpu that run on
+ *
+ * @return 0 on success, otherwise negative error code
+ *
+ * @coretags{task-unrestricted}
+ */
+int rtdm_timer_init_on_cpu(rtdm_timer_t *timer, rtdm_timer_handler_t handler,
+		    const char *name, int cpu)
+{
+	struct xnsched *sched = xnsched_struct(cpu);
+
+	if (!realtime_core_enabled())
+		return -ENOSYS;
+
+	sched = xnsched_struct(cpu);
+	xntimer_init((timer), &nkclock, handler, sched, XNTIMER_IGRAVITY);
+	xntimer_set_name((timer), (name));
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(rtdm_timer_init_on_cpu);
+
 /**
  * @brief Destroy a timer
  *
-- 
2.17.1