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* [dpdk-dev] [PATCH 20.11] eal: simplify exit functions
@ 2020-06-24  9:36 Thomas Monjalon
  2020-06-30 10:26 ` Kinsella, Ray
  0 siblings, 1 reply; 2+ messages in thread
From: Thomas Monjalon @ 2020-06-24  9:36 UTC (permalink / raw)
  To: dev
  Cc: david.marchand, bruce.richardson, John McNamara, Marko Kovacevic,
	Ray Kinsella, Neil Horman

The option RTE_EAL_ALWAYS_PANIC_ON_ERROR was off by default,
and not customizable with meson. It is completely removed.

The function rte_dump_registers is a trace of the bare metal support
era, and was not supported in userland. It is completely removed.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
---
Because the empty function rte_dump_registers is part of the ABI,
this change is planned for DPDK 20.11.
---
 app/test/test_debug.c                    |  3 ---
 config/common_base                       |  1 -
 doc/guides/howto/debug_troubleshoot.rst  |  2 +-
 lib/librte_eal/common/eal_common_debug.c | 17 +----------------
 lib/librte_eal/include/rte_debug.h       |  7 -------
 lib/librte_eal/rte_eal_version.map       |  1 -
 6 files changed, 2 insertions(+), 29 deletions(-)

diff --git a/app/test/test_debug.c b/app/test/test_debug.c
index 25eab97e2a..834a7386f5 100644
--- a/app/test/test_debug.c
+++ b/app/test/test_debug.c
@@ -66,13 +66,11 @@ test_exit_val(int exit_val)
 	}
 	wait(&status);
 	printf("Child process status: %d\n", status);
-#ifndef RTE_EAL_ALWAYS_PANIC_ON_ERROR
 	if(!WIFEXITED(status) || WEXITSTATUS(status) != (uint8_t)exit_val){
 		printf("Child process terminated with incorrect status (expected = %d)!\n",
 				exit_val);
 		return -1;
 	}
-#endif
 	return 0;
 }
 
@@ -113,7 +111,6 @@ static int
 test_debug(void)
 {
 	rte_dump_stack();
-	rte_dump_registers();
 	if (test_panic() < 0)
 		return -1;
 	if (test_exit() < 0)
diff --git a/config/common_base b/config/common_base
index c7d5c73215..42ad399b17 100644
--- a/config/common_base
+++ b/config/common_base
@@ -103,7 +103,6 @@ CONFIG_RTE_ENABLE_TRACE_FP=n
 CONFIG_RTE_LOG_HISTORY=256
 CONFIG_RTE_BACKTRACE=y
 CONFIG_RTE_LIBEAL_USE_HPET=n
-CONFIG_RTE_EAL_ALWAYS_PANIC_ON_ERROR=n
 CONFIG_RTE_EAL_IGB_UIO=n
 CONFIG_RTE_EAL_VFIO=n
 CONFIG_RTE_MAX_VFIO_GROUPS=64
diff --git a/doc/guides/howto/debug_troubleshoot.rst b/doc/guides/howto/debug_troubleshoot.rst
index cef016b2fe..1ed8be5a04 100644
--- a/doc/guides/howto/debug_troubleshoot.rst
+++ b/doc/guides/howto/debug_troubleshoot.rst
@@ -313,7 +313,7 @@ Custom worker function :numref:`dtg_distributor_worker`.
    * For high-performance execution logic ensure running it on correct NUMA
      and non-master core.
 
-   * Analyze run logic with ``rte_dump_stack``, ``rte_dump_registers`` and
+   * Analyze run logic with ``rte_dump_stack`` and
      ``rte_memdump`` for more insights.
 
    * Make use of objdump to ensure opcode is matching to the desired state.
diff --git a/lib/librte_eal/common/eal_common_debug.c b/lib/librte_eal/common/eal_common_debug.c
index 722468754d..15418e957f 100644
--- a/lib/librte_eal/common/eal_common_debug.c
+++ b/lib/librte_eal/common/eal_common_debug.c
@@ -7,14 +7,6 @@
 #include <rte_log.h>
 #include <rte_debug.h>
 
-/* not implemented */
-void
-rte_dump_registers(void)
-{
-	return;
-}
-
-/* call abort(), it will generate a coredump if enabled */
 void
 __rte_panic(const char *funcname, const char *format, ...)
 {
@@ -25,8 +17,7 @@ __rte_panic(const char *funcname, const char *format, ...)
 	rte_vlog(RTE_LOG_CRIT, RTE_LOGTYPE_EAL, format, ap);
 	va_end(ap);
 	rte_dump_stack();
-	rte_dump_registers();
-	abort();
+	abort(); /* generate a coredump if enabled */
 }
 
 /*
@@ -46,14 +37,8 @@ rte_exit(int exit_code, const char *format, ...)
 	rte_vlog(RTE_LOG_CRIT, RTE_LOGTYPE_EAL, format, ap);
 	va_end(ap);
 
-#ifndef RTE_EAL_ALWAYS_PANIC_ON_ERROR
 	if (rte_eal_cleanup() != 0)
 		RTE_LOG(CRIT, EAL,
 			"EAL could not release all resources\n");
 	exit(exit_code);
-#else
-	rte_dump_stack();
-	rte_dump_registers();
-	abort();
-#endif
 }
diff --git a/lib/librte_eal/include/rte_debug.h b/lib/librte_eal/include/rte_debug.h
index 50052c5a90..c4bc71ce28 100644
--- a/lib/librte_eal/include/rte_debug.h
+++ b/lib/librte_eal/include/rte_debug.h
@@ -26,13 +26,6 @@ extern "C" {
  */
 void rte_dump_stack(void);
 
-/**
- * Dump the registers of the calling core to the console.
- *
- * Note: Not implemented in a userapp environment; use gdb instead.
- */
-void rte_dump_registers(void);
-
 /**
  * Provide notification of a critical non-recoverable error and terminate
  * execution abnormally.
diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map
index 196eef5afa..3f36e46b3b 100644
--- a/lib/librte_eal/rte_eal_version.map
+++ b/lib/librte_eal/rte_eal_version.map
@@ -37,7 +37,6 @@ DPDK_20.0 {
 	rte_devargs_remove;
 	rte_devargs_type_count;
 	rte_dump_physmem_layout;
-	rte_dump_registers;
 	rte_dump_stack;
 	rte_dump_tailq;
 	rte_eal_alarm_cancel;
-- 
2.26.2


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [dpdk-dev] [PATCH 20.11] eal: simplify exit functions
  2020-06-24  9:36 [dpdk-dev] [PATCH 20.11] eal: simplify exit functions Thomas Monjalon
@ 2020-06-30 10:26 ` Kinsella, Ray
  0 siblings, 0 replies; 2+ messages in thread
From: Kinsella, Ray @ 2020-06-30 10:26 UTC (permalink / raw)
  To: Thomas Monjalon, dev
  Cc: david.marchand, bruce.richardson, John McNamara, Marko Kovacevic,
	Neil Horman


On 24/06/2020 10:36, Thomas Monjalon wrote:
> The option RTE_EAL_ALWAYS_PANIC_ON_ERROR was off by default,
> and not customizable with meson. It is completely removed.
> 
> The function rte_dump_registers is a trace of the bare metal support
> era, and was not supported in userland. It is completely removed.
> 
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> ---
> Because the empty function rte_dump_registers is part of the ABI,
> this change is planned for DPDK 20.11.
> ---
>  app/test/test_debug.c                    |  3 ---
>  config/common_base                       |  1 -
>  doc/guides/howto/debug_troubleshoot.rst  |  2 +-
>  lib/librte_eal/common/eal_common_debug.c | 17 +----------------
>  lib/librte_eal/include/rte_debug.h       |  7 -------
>  lib/librte_eal/rte_eal_version.map       |  1 -
>  6 files changed, 2 insertions(+), 29 deletions(-)
> 
> diff --git a/app/test/test_debug.c b/app/test/test_debug.c
> index 25eab97e2a..834a7386f5 100644
> --- a/app/test/test_debug.c
> +++ b/app/test/test_debug.c
> @@ -66,13 +66,11 @@ test_exit_val(int exit_val)
>  	}
>  	wait(&status);
>  	printf("Child process status: %d\n", status);
> -#ifndef RTE_EAL_ALWAYS_PANIC_ON_ERROR
>  	if(!WIFEXITED(status) || WEXITSTATUS(status) != (uint8_t)exit_val){
>  		printf("Child process terminated with incorrect status (expected = %d)!\n",
>  				exit_val);
>  		return -1;
>  	}
> -#endif
>  	return 0;
>  }
>  
> @@ -113,7 +111,6 @@ static int
>  test_debug(void)
>  {
>  	rte_dump_stack();
> -	rte_dump_registers();
>  	if (test_panic() < 0)
>  		return -1;
>  	if (test_exit() < 0)
> diff --git a/config/common_base b/config/common_base
> index c7d5c73215..42ad399b17 100644
> --- a/config/common_base
> +++ b/config/common_base
> @@ -103,7 +103,6 @@ CONFIG_RTE_ENABLE_TRACE_FP=n
>  CONFIG_RTE_LOG_HISTORY=256
>  CONFIG_RTE_BACKTRACE=y
>  CONFIG_RTE_LIBEAL_USE_HPET=n
> -CONFIG_RTE_EAL_ALWAYS_PANIC_ON_ERROR=n
>  CONFIG_RTE_EAL_IGB_UIO=n
>  CONFIG_RTE_EAL_VFIO=n
>  CONFIG_RTE_MAX_VFIO_GROUPS=64
> diff --git a/doc/guides/howto/debug_troubleshoot.rst b/doc/guides/howto/debug_troubleshoot.rst
> index cef016b2fe..1ed8be5a04 100644
> --- a/doc/guides/howto/debug_troubleshoot.rst
> +++ b/doc/guides/howto/debug_troubleshoot.rst
> @@ -313,7 +313,7 @@ Custom worker function :numref:`dtg_distributor_worker`.
>     * For high-performance execution logic ensure running it on correct NUMA
>       and non-master core.
>  
> -   * Analyze run logic with ``rte_dump_stack``, ``rte_dump_registers`` and
> +   * Analyze run logic with ``rte_dump_stack`` and
>       ``rte_memdump`` for more insights.
>  
>     * Make use of objdump to ensure opcode is matching to the desired state.
> diff --git a/lib/librte_eal/common/eal_common_debug.c b/lib/librte_eal/common/eal_common_debug.c
> index 722468754d..15418e957f 100644
> --- a/lib/librte_eal/common/eal_common_debug.c
> +++ b/lib/librte_eal/common/eal_common_debug.c
> @@ -7,14 +7,6 @@
>  #include <rte_log.h>
>  #include <rte_debug.h>
>  
> -/* not implemented */
> -void
> -rte_dump_registers(void)
> -{
> -	return;
> -}
> -
> -/* call abort(), it will generate a coredump if enabled */
>  void
>  __rte_panic(const char *funcname, const char *format, ...)
>  {
> @@ -25,8 +17,7 @@ __rte_panic(const char *funcname, const char *format, ...)
>  	rte_vlog(RTE_LOG_CRIT, RTE_LOGTYPE_EAL, format, ap);
>  	va_end(ap);
>  	rte_dump_stack();
> -	rte_dump_registers();
> -	abort();
> +	abort(); /* generate a coredump if enabled */
>  }
>  
>  /*
> @@ -46,14 +37,8 @@ rte_exit(int exit_code, const char *format, ...)
>  	rte_vlog(RTE_LOG_CRIT, RTE_LOGTYPE_EAL, format, ap);
>  	va_end(ap);
>  
> -#ifndef RTE_EAL_ALWAYS_PANIC_ON_ERROR
>  	if (rte_eal_cleanup() != 0)
>  		RTE_LOG(CRIT, EAL,
>  			"EAL could not release all resources\n");
>  	exit(exit_code);
> -#else
> -	rte_dump_stack();
> -	rte_dump_registers();
> -	abort();
> -#endif
>  }
> diff --git a/lib/librte_eal/include/rte_debug.h b/lib/librte_eal/include/rte_debug.h
> index 50052c5a90..c4bc71ce28 100644
> --- a/lib/librte_eal/include/rte_debug.h
> +++ b/lib/librte_eal/include/rte_debug.h
> @@ -26,13 +26,6 @@ extern "C" {
>   */
>  void rte_dump_stack(void);
>  
> -/**
> - * Dump the registers of the calling core to the console.
> - *
> - * Note: Not implemented in a userapp environment; use gdb instead.
> - */
> -void rte_dump_registers(void);
> -
>  /**
>   * Provide notification of a critical non-recoverable error and terminate
>   * execution abnormally.
> diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map
> index 196eef5afa..3f36e46b3b 100644
> --- a/lib/librte_eal/rte_eal_version.map
> +++ b/lib/librte_eal/rte_eal_version.map
> @@ -37,7 +37,6 @@ DPDK_20.0 {
>  	rte_devargs_remove;
>  	rte_devargs_type_count;
>  	rte_dump_physmem_layout;
> -	rte_dump_registers;
>  	rte_dump_stack;
>  	rte_dump_tailq;
>  	rte_eal_alarm_cancel;
> 

Acked-by: Ray Kinsella <mdr@ashroe.eu>

^ permalink raw reply	[flat|nested] 2+ messages in thread

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