[dpdk-dev] [PATCH v3 1/4] config: introduce global rte debug flag

[Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>]

A new boolean meson build flag is introduced with this patch: rte_debug.
To enable this option add -Drte_debug=true to the meson configure command.

By enabling this flag the globaly defined macro RTE_DEBUG becomes
defined. It should be used for enabling debug code in all dpdk project
components. Using this flag allows to make additional checks or tests
and provide additional logs even in performance sensitive parts of code.

The flag is disabled by default.

Additionally for all enabled to be built libraries
a RTE_DEBUG_{library name} is defined and assigned a value 1.
This standardize names of library specific debug macros. Those can
be used also without rte_debug option by using CFLAGS="-D..." build
parameter.

Code put inside RTE_DEBUG* #ifdef sections should be also put inside
if (rte_log_can_log(...)) condition to allow run-time filtering of
sanity checks, validations, logs and dumps when using rte_debug option.

Libraries will be adjusted to the change in separate patches.

Similarly for all enabled to be built drivers
a RTE_DEBUG_{driver_class}_{driver_name} is defined and assigned value 1.

Suggested-by: Bruce Richardson <bruce.richardson@intel.com>
Signed-off-by: Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>
---
 config/meson.build           | 4 ++++
 drivers/baseband/meson.build | 1 +
 drivers/bus/meson.build      | 1 +
 drivers/common/meson.build   | 1 +
 drivers/compress/meson.build | 1 +
 drivers/crypto/meson.build   | 1 +
 drivers/event/meson.build    | 1 +
 drivers/mempool/meson.build  | 1 +
 drivers/meson.build          | 3 +++
 drivers/net/meson.build      | 1 +
 drivers/raw/meson.build      | 1 +
 drivers/vdpa/meson.build     | 1 +
 lib/meson.build              | 4 ++++
 meson_options.txt            | 2 ++
 14 files changed, 23 insertions(+)

diff --git a/config/meson.build b/config/meson.build
index cff8b33dd..c65c6412a 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -179,6 +179,10 @@ endif
 # add -include rte_config to cflags
 add_project_arguments('-include', 'rte_config.h', language: 'c')
 
+if get_option('rte_debug')
+	dpdk_conf.set('RTE_DEBUG', 1)
+endif
+
 # enable extra warnings and disable any unwanted warnings
 warning_flags = [
 	# -Wall is added by meson by default, so add -Wextra only
diff --git a/drivers/baseband/meson.build b/drivers/baseband/meson.build
index 415b6724b..11ff30e5a 100644
--- a/drivers/baseband/meson.build
+++ b/drivers/baseband/meson.build
@@ -9,3 +9,4 @@ drivers = ['null', 'turbo_sw', 'fpga_lte_fec', 'fpga_5gnr_fec']
 
 config_flag_fmt = 'RTE_LIBRTE_PMD_BBDEV_@0@'
 driver_name_fmt = 'rte_pmd_bbdev_@0@'
+rte_debug_fmt = 'RTE_DEBUG_BASEBAND_@0@'
diff --git a/drivers/bus/meson.build b/drivers/bus/meson.build
index 80de2d91d..8ccbce75b 100644
--- a/drivers/bus/meson.build
+++ b/drivers/bus/meson.build
@@ -5,3 +5,4 @@ drivers = ['dpaa', 'fslmc', 'ifpga', 'pci', 'vdev', 'vmbus']
 std_deps = ['eal']
 config_flag_fmt = 'RTE_LIBRTE_@0@_BUS'
 driver_name_fmt = 'rte_bus_@0@'
+rte_debug_fmt = 'RTE_DEBUG_BUS_@0@'
diff --git a/drivers/common/meson.build b/drivers/common/meson.build
index 5db7e29b1..a72f14905 100644
--- a/drivers/common/meson.build
+++ b/drivers/common/meson.build
@@ -9,3 +9,4 @@ std_deps = ['eal']
 drivers = ['cpt', 'dpaax', 'iavf', 'mlx5', 'mvep', 'octeontx', 'octeontx2', 'qat']
 config_flag_fmt = 'RTE_LIBRTE_@0@_COMMON'
 driver_name_fmt = 'rte_common_@0@'
+rte_debug_fmt = 'RTE_DEBUG_COMMON_@0@'
diff --git a/drivers/compress/meson.build b/drivers/compress/meson.build
index ee883c3f9..b446bd988 100644
--- a/drivers/compress/meson.build
+++ b/drivers/compress/meson.build
@@ -10,3 +10,4 @@ drivers = ['isal', 'octeontx', 'qat', 'zlib']
 std_deps = ['compressdev'] # compressdev pulls in all other needed deps
 config_flag_fmt = 'RTE_LIBRTE_@0@_PMD'
 driver_name_fmt = 'rte_pmd_@0@'
+rte_debug_fmt = 'RTE_DEBUG_COMPRESS_@0@'
diff --git a/drivers/crypto/meson.build b/drivers/crypto/meson.build
index a2423507a..02c2c8752 100644
--- a/drivers/crypto/meson.build
+++ b/drivers/crypto/meson.build
@@ -28,3 +28,4 @@ drivers = ['aesni_gcm',
 std_deps = ['cryptodev'] # cryptodev pulls in all other needed deps
 config_flag_fmt = 'RTE_LIBRTE_@0@_PMD'
 driver_name_fmt = 'rte_pmd_@0@'
+rte_debug_fmt = 'RTE_DEBUG_CRYPTO_@0@'
diff --git a/drivers/event/meson.build b/drivers/event/meson.build
index ebe76a75c..3e3c221c3 100644
--- a/drivers/event/meson.build
+++ b/drivers/event/meson.build
@@ -13,3 +13,4 @@ endif
 std_deps = ['eventdev', 'kvargs']
 config_flag_fmt = 'RTE_LIBRTE_@0@_EVENTDEV_PMD'
 driver_name_fmt = 'rte_pmd_@0@_event'
+rte_debug_fmt = 'RTE_DEBUG_EVENT_@0@'
diff --git a/drivers/mempool/meson.build b/drivers/mempool/meson.build
index c9609f145..ada93a75a 100644
--- a/drivers/mempool/meson.build
+++ b/drivers/mempool/meson.build
@@ -9,3 +9,4 @@ drivers = ['bucket', 'dpaa', 'dpaa2', 'octeontx', 'octeontx2', 'ring', 'stack']
 std_deps = ['mempool']
 config_flag_fmt = 'RTE_LIBRTE_@0@_MEMPOOL'
 driver_name_fmt = 'rte_mempool_@0@'
+rte_debug_fmt = 'RTE_DEBUG_MEMPOOL_@0@'
diff --git a/drivers/meson.build b/drivers/meson.build
index 161cfda04..975e1774b 100644
--- a/drivers/meson.build
+++ b/drivers/meson.build
@@ -99,6 +99,9 @@ foreach class:dpdk_driver_classes
 				fmt_name = name
 			endif
 			dpdk_conf.set(config_flag_fmt.format(fmt_name.to_upper()),1)
+			if get_option('rte_debug')
+				dpdk_conf.set(rte_debug_fmt.format(fmt_name.to_upper()),1)
+			endif
 			lib_name = driver_name_fmt.format(fmt_name)
 
 			dpdk_extra_ldflags += pkgconfig_extra_libs
diff --git a/drivers/net/meson.build b/drivers/net/meson.build
index d56b24051..0b4037b5f 100644
--- a/drivers/net/meson.build
+++ b/drivers/net/meson.build
@@ -60,3 +60,4 @@ std_deps += ['bus_pci']         # very many PMDs depend on PCI, so make std
 std_deps += ['bus_vdev']        # same with vdev bus
 config_flag_fmt = 'RTE_LIBRTE_@0@_PMD'
 driver_name_fmt = 'rte_pmd_@0@'
+rte_debug_fmt = 'RTE_DEBUG_NET_@0@'
diff --git a/drivers/raw/meson.build b/drivers/raw/meson.build
index 2c1e65ec7..703c2b8a8 100644
--- a/drivers/raw/meson.build
+++ b/drivers/raw/meson.build
@@ -13,3 +13,4 @@ drivers = ['dpaa2_cmdif', 'dpaa2_qdma',
 std_deps = ['rawdev']
 config_flag_fmt = 'RTE_LIBRTE_PMD_@0@_RAWDEV'
 driver_name_fmt = 'rte_rawdev_@0@'
+rte_debug_fmt = 'RTE_DEBUG_RAW_@0@'
diff --git a/drivers/vdpa/meson.build b/drivers/vdpa/meson.build
index 798eb3830..7e86a0c49 100644
--- a/drivers/vdpa/meson.build
+++ b/drivers/vdpa/meson.build
@@ -11,3 +11,4 @@ std_deps = ['bus_pci', 'kvargs']
 std_deps += ['vhost']
 config_flag_fmt = 'RTE_LIBRTE_@0@_PMD'
 driver_name_fmt = 'rte_pmd_@0@'
+rte_debug_fmt = 'RTE_DEBUG_VDPA_@0@'
diff --git a/lib/meson.build b/lib/meson.build
index 3852c0156..a06099a15 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -99,6 +99,10 @@ foreach l:libraries
 		dpdk_conf.set('RTE_LIBRTE_' + name.to_upper(), 1)
 		install_headers(headers)
 
+		if get_option('rte_debug')
+			dpdk_conf.set('RTE_DEBUG_' + name.to_upper(), 1)
+		endif
+
 		libname = 'rte_' + name
 		includes += include_directories(dir_name)
 
diff --git a/meson_options.txt b/meson_options.txt
index 9bf18ab6b..fc0fedd69 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -32,6 +32,8 @@ option('max_numa_nodes', type: 'integer', value: 4,
 	description: 'maximum number of NUMA nodes supported by EAL')
 option('enable_trace_fp', type: 'boolean', value: false,
 	description: 'enable fast path trace points.')
+option('rte_debug', type: 'boolean', value: false,
+	description: 'build with additional sanity checks, validations and logs')
 option('tests', type: 'boolean', value: true,
 	description: 'build unit tests')
 option('use_hpet', type: 'boolean', value: false,
-- 
2.17.1