[dpdk-dev] [PATCH] eal: add config option to enable asserts

[Xueming Li <xuemingl@mellanox.com>]

Currently, enabling assertion have to set CONFIG_RTE_LOG_LEVEL to
RTE_LOG_DEBUG. CONFIG_RTE_LOG_LEVEL is the default log level of control
path, RTE_LOG_DP_LEVEL is the log level of data path. It's a little bit
hard to understand literally that assertion is decided by control path
LOG_LEVEL, especially assertion used on data path.

On the other hand, DPDK need an assertion enabling switch w/o impacting
log output level, assuming "--log-level" not specified.

Assertion is an important API to balance DPDK high performance and
robustness. To promote assertion usage, it's valuable to unhide
assertion out of COFNIG_RTE_LOG_LEVEL.

In one word, log is log, assertion is assertion, debug is hot pot :)

Rationale of this patch is to introduce an independant switch of
assertion.

BTW, CONFIG_RTE_LOG_LEVEL is merely a default value of runtime global
log level, not sure the value to keep it in compile time configuration.

Signed-off-by: Xueming Li <xuemingl@mellanox.com>
---
 config/common_base                        | 1 +
 lib/librte_eal/common/include/rte_debug.h | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/config/common_base b/config/common_base
index 5e97a08b6..ce14b1cac 100644
--- a/config/common_base
+++ b/config/common_base
@@ -93,6 +93,7 @@ CONFIG_RTE_MAX_NUMA_NODES=8
 CONFIG_RTE_MAX_MEMSEG=256
 CONFIG_RTE_MAX_MEMZONE=2560
 CONFIG_RTE_MAX_TAILQ=32
+CONFIG_RTE_ASSERTION=n
 CONFIG_RTE_LOG_LEVEL=RTE_LOG_INFO
 CONFIG_RTE_LOG_DP_LEVEL=RTE_LOG_INFO
 CONFIG_RTE_LOG_HISTORY=256
diff --git a/lib/librte_eal/common/include/rte_debug.h b/lib/librte_eal/common/include/rte_debug.h
index cab6fb4c9..d1104c240 100644
--- a/lib/librte_eal/common/include/rte_debug.h
+++ b/lib/librte_eal/common/include/rte_debug.h
@@ -79,7 +79,7 @@ void rte_dump_registers(void);
 #define rte_panic(...) rte_panic_(__func__, __VA_ARGS__, "dummy")
 #define rte_panic_(func, format, ...) __rte_panic(func, format "%.0s", __VA_ARGS__)
 
-#if RTE_LOG_LEVEL >= RTE_LOG_DEBUG
+#ifdef RTE_ASSERTION
 #define RTE_ASSERT(exp)	RTE_VERIFY(exp)
 #else
 #define RTE_ASSERT(exp) do {} while (0)
-- 
2.13.3