[dpdk-dev] [PATCH 1/2] l3fwd-power: exit if initializing power library failed

[dpdk-dev] [PATCH 1/2] l3fwd-power: exit if initializing power library failed

[Anatoly Burakov]

Currently, if power library initialization fails, only a log message is
displayed. This is suboptimal for a number of reasons, but the main one
is that telemetry mode does not depend on the power library and can
therefore run in environments where l3fwd-power would normally not run
correctly (such as inside a VM). This will lead to attempts to
deinitialize the power library on exit, with a subsequent forced unclean
shutdown of DPDK.

Fix this by only initializing the power library in modes that actually
need it, and change a log message to a failure to initialize.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
 examples/l3fwd-power/main.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index c7fe0ec034..0e5fe42a64 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -2065,15 +2065,17 @@ static int check_ptype(uint16_t portid)
 static int
 init_power_library(void)
 {
-	int ret = 0, lcore_id;
-	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
-		if (rte_lcore_is_enabled(lcore_id)) {
-			/* init power management library */
-			ret = rte_power_init(lcore_id);
-			if (ret)
-				RTE_LOG(ERR, POWER,
+	unsigned int lcore_id;
+	int ret = 0;
+
+	RTE_LCORE_FOREACH(lcore_id) {
+		/* init power management library */
+		ret = rte_power_init(lcore_id);
+		if (ret) {
+			RTE_LOG(ERR, POWER,
 				"Library initialization failed on core %u\n",
 				lcore_id);
+			return ret;
 		}
 	}
 	return ret;
@@ -2224,8 +2226,8 @@ main(int argc, char **argv)
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Invalid L3FWD parameters\n");
 
-	if (init_power_library())
-		RTE_LOG(ERR, L3FWD_POWER, "init_power_library failed\n");
+	if (app_mode != APP_MODE_TELEMETRY && init_power_library())
+		rte_exit(EXIT_FAILURE, "init_power_library failed\n");
 
 	if (update_lcore_params() < 0)
 		rte_exit(EXIT_FAILURE, "update_lcore_params failed\n");
-- 
2.17.1

[dpdk-dev] [PATCH 2/2] l3fwd-power: implement proper shutdown handling

[Anatoly Burakov]

Currently, shutdown for l3fwd-power application is all over the place
and may or may not happen either in the signal handler or in the main()
function. Fix this so that the signal handler will only set the exit
variable, thereby allowing all of the loops to end properly and proceed
to deinitialize everything.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
 examples/l3fwd-power/main.c | 74 ++++++++++++++++++++-----------------
 1 file changed, 40 insertions(+), 34 deletions(-)

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index 0e5fe42a64..0fd80e9c1e 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -422,41 +422,10 @@ static int is_done(void)
 static void
 signal_exit_now(int sigtype)
 {
-	unsigned lcore_id;
-	unsigned int portid;
-	int ret;
 
-	if (sigtype == SIGINT) {
-		if (app_mode == APP_MODE_EMPTY_POLL ||
-				app_mode == APP_MODE_TELEMETRY)
-			quit_signal = true;
+	if (sigtype == SIGINT)
+		quit_signal = true;
 
-
-		for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
-			if (rte_lcore_is_enabled(lcore_id) == 0)
-				continue;
-
-			/* init power management library */
-			ret = rte_power_exit(lcore_id);
-			if (ret)
-				rte_exit(EXIT_FAILURE, "Power management "
-					"library de-initialization failed on "
-							"core%u\n", lcore_id);
-		}
-
-		if (app_mode != APP_MODE_EMPTY_POLL) {
-			RTE_ETH_FOREACH_DEV(portid) {
-				if ((enabled_port_mask & (1 << portid)) == 0)
-					continue;
-
-				rte_eth_dev_stop(portid);
-				rte_eth_dev_close(portid);
-			}
-		}
-	}
-
-	if (app_mode != APP_MODE_EMPTY_POLL)
-		rte_exit(EXIT_SUCCESS, "User forced exit\n");
 }
 
 /*  Freqency scale down timer callback */
@@ -1196,7 +1165,7 @@ main_loop(__attribute__((unused)) void *dummy)
 	else
 		RTE_LOG(INFO, L3FWD_POWER, "RX interrupt won't enable.\n");
 
-	while (1) {
+	while (!is_done()) {
 		stats[lcore_id].nb_iteration_looped++;
 
 		cur_tsc = rte_rdtsc();
@@ -1343,6 +1312,8 @@ main_loop(__attribute__((unused)) void *dummy)
 			stats[lcore_id].sleep_time += lcore_idle_hint;
 		}
 	}
+
+	return 0;
 }
 
 static int
@@ -2080,6 +2051,26 @@ init_power_library(void)
 	}
 	return ret;
 }
+
+static int
+deinit_power_library(void)
+{
+	unsigned int lcore_id;
+	int ret = 0;
+
+	RTE_LCORE_FOREACH(lcore_id) {
+		/* deinit power management library */
+		ret = rte_power_exit(lcore_id);
+		if (ret) {
+			RTE_LOG(ERR, POWER,
+				"Library deinitialization failed on core %u\n",
+				lcore_id);
+			return ret;
+		}
+	}
+	return ret;
+}
+
 static void
 update_telemetry(__attribute__((unused)) struct rte_timer *tim,
 		__attribute__((unused)) void *arg)
@@ -2530,8 +2521,23 @@ main(int argc, char **argv)
 			return -1;
 	}
 
+	RTE_ETH_FOREACH_DEV(portid)
+	{
+		if ((enabled_port_mask & (1 << portid)) == 0)
+			continue;
+
+		rte_eth_dev_stop(portid);
+		rte_eth_dev_close(portid);
+	}
+
 	if (app_mode == APP_MODE_EMPTY_POLL)
 		rte_power_empty_poll_stat_free();
 
+	if (app_mode != APP_MODE_TELEMETRY && deinit_power_library())
+		rte_exit(EXIT_FAILURE, "deinit_power_library failed\n");
+
+	if (rte_eal_cleanup() < 0)
+		RTE_LOG(ERR, L3FWD_POWER, "EAL cleanup failed\n");
+
 	return 0;
 }
-- 
2.17.1

Re: [dpdk-dev] [PATCH 1/2] l3fwd-power: exit if initializing power library failed

[Hunt, David]

Hi Anatoly,

On 8/4/2020 4:56 PM, Anatoly Burakov wrote:
> Currently, if power library initialization fails, only a log message is
> displayed. This is suboptimal for a number of reasons, but the main one
> is that telemetry mode does not depend on the power library and can
> therefore run in environments where l3fwd-power would normally not run
> correctly (such as inside a VM). This will lead to attempts to
> deinitialize the power library on exit, with a subsequent forced unclean
> shutdown of DPDK.
>
> Fix this by only initializing the power library in modes that actually
> need it, and change a log message to a failure to initialize.
>
> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
> ---
>   examples/l3fwd-power/main.c | 20 +++++++++++---------
>   1 file changed, 11 insertions(+), 9 deletions(-)
>

Acked-by: David Hunt <david.hunt@intel.com>

Re: [dpdk-dev] [PATCH 2/2] l3fwd-power: implement proper shutdown handling

[Hunt, David]

Hi Anatoly,


On 8/4/2020 4:56 PM, Anatoly Burakov wrote:
> Currently, shutdown for l3fwd-power application is all over the place
> and may or may not happen either in the signal handler or in the main()
> function. Fix this so that the signal handler will only set the exit
> variable, thereby allowing all of the loops to end properly and proceed
> to deinitialize everything.
>
> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
> ---
>   examples/l3fwd-power/main.c | 74 ++++++++++++++++++++-----------------
>   1 file changed, 40 insertions(+), 34 deletions(-)
>

Acked-by: David Hunt <david.hunt@intel.com>

Re: [dpdk-dev] [PATCH 2/2] l3fwd-power: implement proper shutdown handling

[Pattan, Reshma]

> -----Original Message-----
> From: Burakov, Anatoly <anatoly.burakov@intel.com>
> Subject: [PATCH 2/2] l3fwd-power: implement proper shutdown handling
> 
> Currently, shutdown for l3fwd-power application is all over the place and may or
> may not happen either in the signal handler or in the main() function. Fix this so
> that the signal handler will only set the exit variable, thereby allowing all of the
> loops to end properly and proceed to deinitialize everything.
> 

Reviewed-by: Reshma Pattan <reshma.pattan@intel.com>

Re: [dpdk-dev] [PATCH 1/2] l3fwd-power: exit if initializing power library failed

[Pattan, Reshma]

> -----Original Message-----
> From: Burakov, Anatoly <anatoly.burakov@intel.com>
> Subject: [PATCH 1/2] l3fwd-power: exit if initializing power library failed
> 
> 
> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
> ---


Reviewed-by: Reshma Pattan <reshma.pattan@intel.com>

[dpdk-dev] [PATCH v2 1/2] l3fwd-power: exit if initializing power library failed

[Anatoly Burakov]

Currently, if power library initialization fails, only a log message is
displayed. This is suboptimal for a number of reasons, but the main one
is that telemetry mode does not depend on the power library and can
therefore run in environments where l3fwd-power would normally not run
correctly (such as inside a VM). This will lead to attempts to
deinitialize the power library on exit, with a subsequent forced unclean
shutdown of DPDK.

Fix this by only initializing the power library in modes that actually
need it, and change a log message to a failure to initialize.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: David Hunt <david.hunt@intel.com>
Reviewed-by: Reshma Pattan <reshma.pattan@intel.com>
---
 examples/l3fwd-power/main.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index b46aa7bac..be50ec049 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -2065,15 +2065,17 @@ static int check_ptype(uint16_t portid)
 static int
 init_power_library(void)
 {
-	int ret = 0, lcore_id;
-	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
-		if (rte_lcore_is_enabled(lcore_id)) {
-			/* init power management library */
-			ret = rte_power_init(lcore_id);
-			if (ret)
-				RTE_LOG(ERR, POWER,
+	unsigned int lcore_id;
+	int ret = 0;
+
+	RTE_LCORE_FOREACH(lcore_id) {
+		/* init power management library */
+		ret = rte_power_init(lcore_id);
+		if (ret) {
+			RTE_LOG(ERR, POWER,
 				"Library initialization failed on core %u\n",
 				lcore_id);
+			return ret;
 		}
 	}
 	return ret;
@@ -2224,8 +2226,8 @@ main(int argc, char **argv)
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Invalid L3FWD parameters\n");
 
-	if (init_power_library())
-		RTE_LOG(ERR, L3FWD_POWER, "init_power_library failed\n");
+	if (app_mode != APP_MODE_TELEMETRY && init_power_library())
+		rte_exit(EXIT_FAILURE, "init_power_library failed\n");
 
 	if (update_lcore_params() < 0)
 		rte_exit(EXIT_FAILURE, "update_lcore_params failed\n");
-- 
2.17.1

[dpdk-dev] [PATCH v2 2/2] l3fwd-power: implement proper shutdown handling

[Anatoly Burakov]

Currently, shutdown for l3fwd-power application is all over the place
and may or may not happen either in the signal handler or in the main()
function. Fix this so that the signal handler will only set the exit
variable, thereby allowing all of the loops to end properly and proceed
to deinitialize everything.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: David Hunt <david.hunt@intel.com>
Reviewed-by: Reshma Pattan <reshma.pattan@intel.com>
---

Notes:
    v2:
    - rebase on top of latest master

 examples/l3fwd-power/main.c | 74 ++++++++++++++++++++-----------------
 1 file changed, 40 insertions(+), 34 deletions(-)

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index be50ec049..293b3da4a 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -422,41 +422,10 @@ static int is_done(void)
 static void
 signal_exit_now(int sigtype)
 {
-	unsigned lcore_id;
-	unsigned int portid;
-	int ret;
-
-	if (sigtype == SIGINT) {
-		if (app_mode == APP_MODE_EMPTY_POLL ||
-				app_mode == APP_MODE_TELEMETRY)
-			quit_signal = true;
 
+	if (sigtype == SIGINT)
+		quit_signal = true;
 
-		for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
-			if (rte_lcore_is_enabled(lcore_id) == 0)
-				continue;
-
-			/* init power management library */
-			ret = rte_power_exit(lcore_id);
-			if (ret)
-				rte_exit(EXIT_FAILURE, "Power management "
-					"library de-initialization failed on "
-							"core%u\n", lcore_id);
-		}
-
-		if (app_mode != APP_MODE_EMPTY_POLL) {
-			RTE_ETH_FOREACH_DEV(portid) {
-				if ((enabled_port_mask & (1 << portid)) == 0)
-					continue;
-
-				rte_eth_dev_stop(portid);
-				rte_eth_dev_close(portid);
-			}
-		}
-	}
-
-	if (app_mode != APP_MODE_EMPTY_POLL)
-		rte_exit(EXIT_SUCCESS, "User forced exit\n");
 }
 
 /*  Freqency scale down timer callback */
@@ -1196,7 +1165,7 @@ main_loop(__rte_unused void *dummy)
 	else
 		RTE_LOG(INFO, L3FWD_POWER, "RX interrupt won't enable.\n");
 
-	while (1) {
+	while (!is_done()) {
 		stats[lcore_id].nb_iteration_looped++;
 
 		cur_tsc = rte_rdtsc();
@@ -1343,6 +1312,8 @@ main_loop(__rte_unused void *dummy)
 			stats[lcore_id].sleep_time += lcore_idle_hint;
 		}
 	}
+
+	return 0;
 }
 
 static int
@@ -2080,6 +2051,26 @@ init_power_library(void)
 	}
 	return ret;
 }
+
+static int
+deinit_power_library(void)
+{
+	unsigned int lcore_id;
+	int ret = 0;
+
+	RTE_LCORE_FOREACH(lcore_id) {
+		/* deinit power management library */
+		ret = rte_power_exit(lcore_id);
+		if (ret) {
+			RTE_LOG(ERR, POWER,
+				"Library deinitialization failed on core %u\n",
+				lcore_id);
+			return ret;
+		}
+	}
+	return ret;
+}
+
 static void
 update_telemetry(__rte_unused struct rte_timer *tim,
 		__rte_unused void *arg)
@@ -2530,8 +2521,23 @@ main(int argc, char **argv)
 			return -1;
 	}
 
+	RTE_ETH_FOREACH_DEV(portid)
+	{
+		if ((enabled_port_mask & (1 << portid)) == 0)
+			continue;
+
+		rte_eth_dev_stop(portid);
+		rte_eth_dev_close(portid);
+	}
+
 	if (app_mode == APP_MODE_EMPTY_POLL)
 		rte_power_empty_poll_stat_free();
 
+	if (app_mode != APP_MODE_TELEMETRY && deinit_power_library())
+		rte_exit(EXIT_FAILURE, "deinit_power_library failed\n");
+
+	if (rte_eal_cleanup() < 0)
+		RTE_LOG(ERR, L3FWD_POWER, "EAL cleanup failed\n");
+
 	return 0;
 }
-- 
2.17.1

Re: [dpdk-dev] [PATCH v2 2/2] l3fwd-power: implement proper shutdown handling

[Thomas Monjalon]

20/04/2020 19:56, Anatoly Burakov:
> Currently, shutdown for l3fwd-power application is all over the place
> and may or may not happen either in the signal handler or in the main()
> function. Fix this so that the signal handler will only set the exit
> variable, thereby allowing all of the loops to end properly and proceed
> to deinitialize everything.
> 
> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
> Acked-by: David Hunt <david.hunt@intel.com>
> Reviewed-by: Reshma Pattan <reshma.pattan@intel.com>

Applied, thanks

Re: [dpdk-dev] [PATCH v2 2/2] l3fwd-power: implement proper shutdown handling

[Xie, WeiX]

Tested-by:  Xie,WeiX < weix.xie@intel.com>

Regards,
Xie Wei


-----Original Message-----
From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Anatoly Burakov
Sent: Tuesday, April 21, 2020 1:57 AM
To: dev@dpdk.org
Cc: Hunt, David <david.hunt@intel.com>; Pattan, Reshma <reshma.pattan@intel.com>
Subject: [dpdk-dev] [PATCH v2 2/2] l3fwd-power: implement proper shutdown handling

Currently, shutdown for l3fwd-power application is all over the place and may or may not happen either in the signal handler or in the main() function. Fix this so that the signal handler will only set the exit variable, thereby allowing all of the loops to end properly and proceed to deinitialize everything.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: David Hunt <david.hunt@intel.com>
Reviewed-by: Reshma Pattan <reshma.pattan@intel.com>
---

Notes:
    v2:
    - rebase on top of latest master

 examples/l3fwd-power/main.c | 74 ++++++++++++++++++++-----------------
 1 file changed, 40 insertions(+), 34 deletions(-)

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c index be50ec049..293b3da4a 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -422,41 +422,10 @@ static int is_done(void)  static void  signal_exit_now(int sigtype)  {
-	unsigned lcore_id;
-	unsigned int portid;
-	int ret;
-
-	if (sigtype == SIGINT) {
-		if (app_mode == APP_MODE_EMPTY_POLL ||
-				app_mode == APP_MODE_TELEMETRY)
-			quit_signal = true;
 
+	if (sigtype == SIGINT)
+		quit_signal = true;
 
-		for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
-			if (rte_lcore_is_enabled(lcore_id) == 0)
-				continue;
-
-			/* init power management library */
-			ret = rte_power_exit(lcore_id);
-			if (ret)
-				rte_exit(EXIT_FAILURE, "Power management "
-					"library de-initialization failed on "
-							"core%u\n", lcore_id);
-		}
-
-		if (app_mode != APP_MODE_EMPTY_POLL) {
-			RTE_ETH_FOREACH_DEV(portid) {
-				if ((enabled_port_mask & (1 << portid)) == 0)
-					continue;
-
-				rte_eth_dev_stop(portid);
-				rte_eth_dev_close(portid);
-			}
-		}
-	}
-
-	if (app_mode != APP_MODE_EMPTY_POLL)
-		rte_exit(EXIT_SUCCESS, "User forced exit\n");
 }
 
 /*  Freqency scale down timer callback */ @@ -1196,7 +1165,7 @@ main_loop(__rte_unused void *dummy)
 	else
 		RTE_LOG(INFO, L3FWD_POWER, "RX interrupt won't enable.\n");
 
-	while (1) {
+	while (!is_done()) {
 		stats[lcore_id].nb_iteration_looped++;
 
 		cur_tsc = rte_rdtsc();
@@ -1343,6 +1312,8 @@ main_loop(__rte_unused void *dummy)
 			stats[lcore_id].sleep_time += lcore_idle_hint;
 		}
 	}
+
+	return 0;
 }
 
 static int
@@ -2080,6 +2051,26 @@ init_power_library(void)
 	}
 	return ret;
 }
+
+static int
+deinit_power_library(void)
+{
+	unsigned int lcore_id;
+	int ret = 0;
+
+	RTE_LCORE_FOREACH(lcore_id) {
+		/* deinit power management library */
+		ret = rte_power_exit(lcore_id);
+		if (ret) {
+			RTE_LOG(ERR, POWER,
+				"Library deinitialization failed on core %u\n",
+				lcore_id);
+			return ret;
+		}
+	}
+	return ret;
+}
+
 static void
 update_telemetry(__rte_unused struct rte_timer *tim,
 		__rte_unused void *arg)
@@ -2530,8 +2521,23 @@ main(int argc, char **argv)
 			return -1;
 	}
 
+	RTE_ETH_FOREACH_DEV(portid)
+	{
+		if ((enabled_port_mask & (1 << portid)) == 0)
+			continue;
+
+		rte_eth_dev_stop(portid);
+		rte_eth_dev_close(portid);
+	}
+
 	if (app_mode == APP_MODE_EMPTY_POLL)
 		rte_power_empty_poll_stat_free();
 
+	if (app_mode != APP_MODE_TELEMETRY && deinit_power_library())
+		rte_exit(EXIT_FAILURE, "deinit_power_library failed\n");
+
+	if (rte_eal_cleanup() < 0)
+		RTE_LOG(ERR, L3FWD_POWER, "EAL cleanup failed\n");
+
 	return 0;
 }
--
2.17.1

Re: [dpdk-dev] [PATCH v2 1/2] l3fwd-power: exit if initializing power library failed

[Xie, WeiX]

Tested-by:  Xie,WeiX < weix.xie@intel.com>

Regards,
Xie Wei


-----Original Message-----
From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Anatoly Burakov
Sent: Tuesday, April 21, 2020 1:57 AM
To: dev@dpdk.org
Cc: Hunt, David <david.hunt@intel.com>; Pattan, Reshma <reshma.pattan@intel.com>
Subject: [dpdk-dev] [PATCH v2 1/2] l3fwd-power: exit if initializing power library failed

Currently, if power library initialization fails, only a log message is displayed. This is suboptimal for a number of reasons, but the main one is that telemetry mode does not depend on the power library and can therefore run in environments where l3fwd-power would normally not run correctly (such as inside a VM). This will lead to attempts to deinitialize the power library on exit, with a subsequent forced unclean shutdown of DPDK.

Fix this by only initializing the power library in modes that actually need it, and change a log message to a failure to initialize.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: David Hunt <david.hunt@intel.com>
Reviewed-by: Reshma Pattan <reshma.pattan@intel.com>
---
 examples/l3fwd-power/main.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c index b46aa7bac..be50ec049 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -2065,15 +2065,17 @@ static int check_ptype(uint16_t portid)  static int
 init_power_library(void)
 {
-	int ret = 0, lcore_id;
-	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
-		if (rte_lcore_is_enabled(lcore_id)) {
-			/* init power management library */
-			ret = rte_power_init(lcore_id);
-			if (ret)
-				RTE_LOG(ERR, POWER,
+	unsigned int lcore_id;
+	int ret = 0;
+
+	RTE_LCORE_FOREACH(lcore_id) {
+		/* init power management library */
+		ret = rte_power_init(lcore_id);
+		if (ret) {
+			RTE_LOG(ERR, POWER,
 				"Library initialization failed on core %u\n",
 				lcore_id);
+			return ret;
 		}
 	}
 	return ret;
@@ -2224,8 +2226,8 @@ main(int argc, char **argv)
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Invalid L3FWD parameters\n");
 
-	if (init_power_library())
-		RTE_LOG(ERR, L3FWD_POWER, "init_power_library failed\n");
+	if (app_mode != APP_MODE_TELEMETRY && init_power_library())
+		rte_exit(EXIT_FAILURE, "init_power_library failed\n");
 
 	if (update_lcore_params() < 0)
 		rte_exit(EXIT_FAILURE, "update_lcore_params failed\n");
--
2.17.1