[dpdk-dev] [PATCH 40/44] event/octeontx2: add event timer stats get and reset

[<pbhagavatula@marvell.com>]

From: Pavan Nikhilesh <pbhagavatula@marvell.com>

Add event timer adapter statistics get and reset functions.
Stats are disabled by default and can be enabled through devargs.
Example:

	--dev "0002:0e:00.0,tim_stats_ena=1"

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
 drivers/event/octeontx2/otx2_tim_evdev.c  | 55 ++++++++++++++---
 drivers/event/octeontx2/otx2_tim_evdev.h  | 75 ++++++++++++++++-------
 drivers/event/octeontx2/otx2_tim_worker.c |  9 ++-
 3 files changed, 104 insertions(+), 35 deletions(-)

diff --git a/drivers/event/octeontx2/otx2_tim_evdev.c b/drivers/event/octeontx2/otx2_tim_evdev.c
index 56ee5fe03..b9953bbcb 100644
--- a/drivers/event/octeontx2/otx2_tim_evdev.c
+++ b/drivers/event/octeontx2/otx2_tim_evdev.c
@@ -35,24 +35,26 @@ tim_set_fp_ops(struct otx2_tim_ring *tim_ring)
 	uint8_t prod_flag = !tim_ring->prod_type_sp;
 
 	/* [MOD/AND] [DFB/FB] [SP][MP]*/
-	const rte_event_timer_arm_burst_t arm_burst[2][2][2] = {
-#define FP(_name,  _f3, _f2, _f1, flags) \
-		[_f3][_f2][_f1] = otx2_tim_arm_burst_ ## _name,
+	const rte_event_timer_arm_burst_t arm_burst[2][2][2][2] = {
+#define FP(_name, _f4, _f3, _f2, _f1, flags) \
+		[_f4][_f3][_f2][_f1] = otx2_tim_arm_burst_ ## _name,
 TIM_ARM_FASTPATH_MODES
 #undef FP
 	};
 
-	const rte_event_timer_arm_tmo_tick_burst_t arm_tmo_burst[2][2] = {
-#define FP(_name, _f2, _f1, flags) \
-		[_f2][_f1] = otx2_tim_arm_tmo_tick_burst_ ## _name,
+	const rte_event_timer_arm_tmo_tick_burst_t arm_tmo_burst[2][2][2] = {
+#define FP(_name, _f3, _f2, _f1, flags) \
+		[_f3][_f2][_f1] = otx2_tim_arm_tmo_tick_burst_ ## _name,
 TIM_ARM_TMO_FASTPATH_MODES
 #undef FP
 	};
 
-	otx2_tim_ops.arm_burst = arm_burst[tim_ring->optimized]
-				[tim_ring->ena_dfb][prod_flag];
-	otx2_tim_ops.arm_tmo_tick_burst = arm_tmo_burst[tim_ring->optimized]
-				[tim_ring->ena_dfb];
+	otx2_tim_ops.arm_burst =
+		arm_burst[tim_ring->enable_stats][tim_ring->optimized]
+			[tim_ring->ena_dfb][prod_flag];
+	otx2_tim_ops.arm_tmo_tick_burst =
+		arm_tmo_burst[tim_ring->enable_stats][tim_ring->optimized]
+			[tim_ring->ena_dfb];
 	otx2_tim_ops.cancel_burst = otx2_tim_timer_cancel_burst;
 }
 
@@ -300,6 +302,7 @@ otx2_tim_ring_create(struct rte_event_timer_adapter *adptr)
 	tim_ring->chunk_sz = dev->chunk_sz;
 	nb_timers = rcfg->nb_timers;
 	tim_ring->disable_npa = dev->disable_npa;
+	tim_ring->enable_stats = dev->enable_stats;
 
 	tim_ring->nb_chunks = nb_timers / OTX2_TIM_NB_CNK_SLOTS(
 							tim_ring->chunk_sz);
@@ -403,6 +406,30 @@ otx2_tim_ring_free(struct rte_event_timer_adapter *adptr)
 	return 0;
 }
 
+static int
+otx2_tim_stats_get(const struct rte_event_timer_adapter *adapter,
+		   struct rte_event_timer_adapter_stats *stats)
+{
+	struct otx2_tim_ring *tim_ring = adapter->data->adapter_priv;
+	uint64_t bkt_cyc = rte_rdtsc() - tim_ring->ring_start_cyc;
+
+
+	stats->evtim_exp_count = rte_atomic64_read(&tim_ring->arm_cnt);
+	stats->ev_enq_count = stats->evtim_exp_count;
+	stats->adapter_tick_count = rte_reciprocal_divide_u64(bkt_cyc,
+				&tim_ring->fast_div);
+	return 0;
+}
+
+static int
+otx2_tim_stats_reset(const struct rte_event_timer_adapter *adapter)
+{
+	struct otx2_tim_ring *tim_ring = adapter->data->adapter_priv;
+
+	rte_atomic64_clear(&tim_ring->arm_cnt);
+	return 0;
+}
+
 int
 otx2_tim_caps_get(const struct rte_eventdev *evdev, uint64_t flags,
 		  uint32_t *caps,
@@ -418,6 +445,11 @@ otx2_tim_caps_get(const struct rte_eventdev *evdev, uint64_t flags,
 	otx2_tim_ops.uninit = otx2_tim_ring_free;
 	otx2_tim_ops.get_info	= otx2_tim_ring_info_get;
 
+	if (dev->enable_stats) {
+		otx2_tim_ops.stats_get   = otx2_tim_stats_get;
+		otx2_tim_ops.stats_reset = otx2_tim_stats_reset;
+	}
+
 	/* Store evdev pointer for later use. */
 	dev->event_dev = (struct rte_eventdev *)(uintptr_t)evdev;
 	*caps = RTE_EVENT_TIMER_ADAPTER_CAP_INTERNAL_PORT;
@@ -428,6 +460,7 @@ otx2_tim_caps_get(const struct rte_eventdev *evdev, uint64_t flags,
 
 #define OTX2_TIM_DISABLE_NPA	"tim_disable_npa"
 #define OTX2_TIM_CHNK_SLOTS	"tim_chnk_slots"
+#define OTX2_TIM_STATS_ENA	"tim_stats_ena"
 
 static void
 tim_parse_devargs(struct rte_devargs *devargs, struct otx2_tim_evdev *dev)
@@ -445,6 +478,8 @@ tim_parse_devargs(struct rte_devargs *devargs, struct otx2_tim_evdev *dev)
 			   &parse_kvargs_flag, &dev->disable_npa);
 	rte_kvargs_process(kvlist, OTX2_TIM_CHNK_SLOTS,
 			   &parse_kvargs_value, &dev->chunk_slots);
+	rte_kvargs_process(kvlist, OTX2_TIM_STATS_ENA, &parse_kvargs_flag,
+			   &dev->enable_stats);
 }
 
 void
diff --git a/drivers/event/octeontx2/otx2_tim_evdev.h b/drivers/event/octeontx2/otx2_tim_evdev.h
index 45fc648bc..79be046f0 100644
--- a/drivers/event/octeontx2/otx2_tim_evdev.h
+++ b/drivers/event/octeontx2/otx2_tim_evdev.h
@@ -69,6 +69,7 @@
 #define OTX2_TIM_BKT_MOD        0x8
 #define OTX2_TIM_ENA_FB         0x10
 #define OTX2_TIM_ENA_DFB        0x20
+#define OTX2_TIM_ENA_STATS      0x40
 
 enum otx2_tim_clk_src {
 	OTX2_TIM_CLK_SRC_10NS = RTE_EVENT_TIMER_ADAPTER_CPU_CLK,
@@ -110,6 +111,7 @@ struct otx2_tim_evdev {
 	/* Dev args */
 	uint8_t disable_npa;
 	uint16_t chunk_slots;
+	uint8_t enable_stats;
 	/* MSIX offsets */
 	uint16_t tim_msixoff[OTX2_MAX_TIM_RINGS];
 };
@@ -123,7 +125,9 @@ struct otx2_tim_ring {
 	struct otx2_tim_bkt *bkt;
 	struct rte_mempool *chunk_pool;
 	uint64_t tck_int;
+	rte_atomic64_t arm_cnt;
 	uint8_t prod_type_sp;
+	uint8_t enable_stats;
 	uint8_t disable_npa;
 	uint8_t optimized;
 	uint8_t ena_dfb;
@@ -149,32 +153,57 @@ otx2_tim_priv_get(void)
 	return mz->addr;
 }
 
-#define TIM_ARM_FASTPATH_MODES						  \
-FP(mod_sp,    0, 0, 0, OTX2_TIM_BKT_MOD | OTX2_TIM_ENA_DFB | OTX2_TIM_SP) \
-FP(mod_mp,    0, 0, 1, OTX2_TIM_BKT_MOD | OTX2_TIM_ENA_DFB | OTX2_TIM_MP) \
-FP(mod_fb_sp, 0, 1, 0, OTX2_TIM_BKT_MOD | OTX2_TIM_ENA_FB  | OTX2_TIM_SP) \
-FP(mod_fb_mp, 0, 1, 1, OTX2_TIM_BKT_MOD | OTX2_TIM_ENA_FB  | OTX2_TIM_MP) \
-FP(and_sp,    1, 0, 0, OTX2_TIM_BKT_AND | OTX2_TIM_ENA_DFB | OTX2_TIM_SP) \
-FP(and_mp,    1, 0, 1, OTX2_TIM_BKT_AND | OTX2_TIM_ENA_DFB | OTX2_TIM_MP) \
-FP(and_fb_sp, 1, 1, 0, OTX2_TIM_BKT_AND | OTX2_TIM_ENA_FB  | OTX2_TIM_SP) \
-FP(and_fb_mp, 1, 1, 1, OTX2_TIM_BKT_AND | OTX2_TIM_ENA_FB  | OTX2_TIM_MP) \
-
-#define FP(_name, _f3, _f2, _f1, flags)					  \
-uint16_t otx2_tim_arm_burst_ ## _name(					  \
-			const struct rte_event_timer_adapter *adptr,	  \
-				      struct rte_event_timer **tim,	  \
-				      const uint16_t nb_timers);
+#define TIM_ARM_FASTPATH_MODES						     \
+FP(mod_sp,    0, 0, 0, 0, OTX2_TIM_BKT_MOD | OTX2_TIM_ENA_DFB | OTX2_TIM_SP) \
+FP(mod_mp,    0, 0, 0, 1, OTX2_TIM_BKT_MOD | OTX2_TIM_ENA_DFB | OTX2_TIM_MP) \
+FP(mod_fb_sp, 0, 0, 1, 0, OTX2_TIM_BKT_MOD | OTX2_TIM_ENA_FB  | OTX2_TIM_SP) \
+FP(mod_fb_mp, 0, 0, 1, 1, OTX2_TIM_BKT_MOD | OTX2_TIM_ENA_FB  | OTX2_TIM_MP) \
+FP(and_sp,    0, 1, 0, 0, OTX2_TIM_BKT_AND | OTX2_TIM_ENA_DFB | OTX2_TIM_SP) \
+FP(and_mp,    0, 1, 0, 1, OTX2_TIM_BKT_AND | OTX2_TIM_ENA_DFB | OTX2_TIM_MP) \
+FP(and_fb_sp, 0, 1, 1, 0, OTX2_TIM_BKT_AND | OTX2_TIM_ENA_FB  | OTX2_TIM_SP) \
+FP(and_fb_mp, 0, 1, 1, 1, OTX2_TIM_BKT_AND | OTX2_TIM_ENA_FB  | OTX2_TIM_MP) \
+FP(stats_mod_sp,    1, 0, 0, 0, OTX2_TIM_ENA_STATS | OTX2_TIM_BKT_MOD |	     \
+	OTX2_TIM_ENA_DFB | OTX2_TIM_SP)					     \
+FP(stats_mod_mp,    1, 0, 0, 1, OTX2_TIM_ENA_STATS | OTX2_TIM_BKT_MOD |	     \
+	OTX2_TIM_ENA_DFB | OTX2_TIM_MP)					     \
+FP(stats_mod_fb_sp, 1, 0, 1, 0, OTX2_TIM_ENA_STATS | OTX2_TIM_BKT_MOD |	     \
+	OTX2_TIM_ENA_FB  | OTX2_TIM_SP)					     \
+FP(stats_mod_fb_mp, 1, 0, 1, 1, OTX2_TIM_ENA_STATS | OTX2_TIM_BKT_MOD |	     \
+	OTX2_TIM_ENA_FB  | OTX2_TIM_MP)					     \
+FP(stats_and_sp,    1, 1, 0, 0, OTX2_TIM_ENA_STATS | OTX2_TIM_BKT_AND |	     \
+	OTX2_TIM_ENA_DFB | OTX2_TIM_SP)					     \
+FP(stats_and_mp,    1, 1, 0, 1, OTX2_TIM_ENA_STATS | OTX2_TIM_BKT_AND |	     \
+	OTX2_TIM_ENA_DFB | OTX2_TIM_MP)					     \
+FP(stats_and_fb_sp, 1, 1, 1, 0, OTX2_TIM_ENA_STATS | OTX2_TIM_BKT_AND |	     \
+	OTX2_TIM_ENA_FB  | OTX2_TIM_SP)					     \
+FP(stats_and_fb_mp, 1, 1, 1, 1, OTX2_TIM_ENA_STATS | OTX2_TIM_BKT_AND |	     \
+	OTX2_TIM_ENA_FB  | OTX2_TIM_MP)
+
+#define TIM_ARM_TMO_FASTPATH_MODES					\
+FP(mod,		 0, 0, 0, OTX2_TIM_BKT_MOD | OTX2_TIM_ENA_DFB)		\
+FP(mod_fb,	 0, 0, 1, OTX2_TIM_BKT_MOD | OTX2_TIM_ENA_FB)		\
+FP(and,		 0, 1, 0, OTX2_TIM_BKT_AND | OTX2_TIM_ENA_DFB)		\
+FP(and_fb,	 0, 1, 1, OTX2_TIM_BKT_AND | OTX2_TIM_ENA_FB)		\
+FP(stats_mod,	 1, 0, 0, OTX2_TIM_ENA_STATS | OTX2_TIM_BKT_MOD |	\
+	OTX2_TIM_ENA_DFB)						\
+FP(stats_mod_fb, 1, 0, 1, OTX2_TIM_ENA_STATS | OTX2_TIM_BKT_MOD |	\
+	OTX2_TIM_ENA_FB)						\
+FP(stats_and,	 1, 1, 0, OTX2_TIM_ENA_STATS | OTX2_TIM_BKT_AND |	\
+	OTX2_TIM_ENA_DFB)						\
+FP(stats_and_fb, 1, 1, 1, OTX2_TIM_ENA_STATS | OTX2_TIM_BKT_AND |	\
+	OTX2_TIM_ENA_FB)
+
+#define FP(_name, _f4, _f3, _f2, _f1, flags)				   \
+uint16_t								   \
+otx2_tim_arm_burst_ ## _name(const struct rte_event_timer_adapter *adptr,  \
+			     struct rte_event_timer **tim,		   \
+			     const uint16_t nb_timers);
 TIM_ARM_FASTPATH_MODES
 #undef FP
 
-#define TIM_ARM_TMO_FASTPATH_MODES				\
-FP(mod,       0, 0, OTX2_TIM_BKT_MOD | OTX2_TIM_ENA_DFB)	\
-FP(mod_fb,    0, 1, OTX2_TIM_BKT_MOD | OTX2_TIM_ENA_FB)		\
-FP(and,       1, 0, OTX2_TIM_BKT_AND | OTX2_TIM_ENA_DFB)	\
-FP(and_fb,    1, 1, OTX2_TIM_BKT_AND | OTX2_TIM_ENA_FB)		\
-
-#define FP(_name, _f2, _f1, flags)					\
-uint16_t otx2_tim_arm_tmo_tick_burst_ ## _name(				\
+#define FP(_name, _f3, _f2, _f1, flags)					\
+uint16_t								\
+otx2_tim_arm_tmo_tick_burst_ ## _name(					\
 		const struct rte_event_timer_adapter *adptr,		\
 		struct rte_event_timer **tim,				\
 		const uint64_t timeout_tick, const uint16_t nb_timers);
diff --git a/drivers/event/octeontx2/otx2_tim_worker.c b/drivers/event/octeontx2/otx2_tim_worker.c
index fd1f02630..feba61cd4 100644
--- a/drivers/event/octeontx2/otx2_tim_worker.c
+++ b/drivers/event/octeontx2/otx2_tim_worker.c
@@ -69,6 +69,9 @@ tim_timer_arm_burst(const struct rte_event_timer_adapter *adptr,
 		}
 	}
 
+	if (flags & OTX2_TIM_ENA_STATS)
+		rte_atomic64_add(&tim_ring->arm_cnt, index);
+
 	return index;
 }
 
@@ -107,11 +110,13 @@ tim_timer_arm_tmo_brst(const struct rte_event_timer_adapter *adptr,
 		if (ret != idx)
 			break;
 	}
+	if (flags & OTX2_TIM_ENA_STATS)
+		rte_atomic64_add(&tim_ring->arm_cnt, set_timers);
 
 	return set_timers;
 }
 
-#define FP(_name, _f3, _f2, _f1, _flags)				  \
+#define FP(_name, _f4, _f3, _f2, _f1, _flags)				\
 uint16_t __rte_noinline							  \
 otx2_tim_arm_burst_ ## _name(const struct rte_event_timer_adapter *adptr, \
 			     struct rte_event_timer **tim,		  \
@@ -122,7 +127,7 @@ otx2_tim_arm_burst_ ## _name(const struct rte_event_timer_adapter *adptr, \
 TIM_ARM_FASTPATH_MODES
 #undef FP
 
-#define FP(_name, _f2, _f1, _flags)					\
+#define FP(_name, _f3, _f2, _f1, _flags)				\
 uint16_t __rte_noinline							\
 otx2_tim_arm_tmo_tick_burst_ ## _name(					\
 			const struct rte_event_timer_adapter *adptr,	\
-- 
2.21.0