[dpdk-dev] [PATCH v2] eal: simplify RTE_PMD_DEBUG_TRACE

[Jeff Shaw]

From: Stephen Hemminger <stephen at networkplumber.org>

Use rte_log directly, eliminating no longer used rte_pmd_dev_trace
function. This removes variable length array which is problem on
Windows and other compilers not doing C99.

Also, drop unused RTE_PROC_PRIMARY macros.

Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
Signed-off-by: Jeff Shaw <jeffrey.b.shaw at intel.com>
---

V2:
  - Changed named variable "args..." to use "..." with ##__VA_LIST__.
    Pasting is necessary to support case where only the format string,
    with no arguments, is passed.

---
 lib/librte_eal/common/include/rte_dev.h | 44 +++------------------------------
 1 file changed, 4 insertions(+), 40 deletions(-)

diff --git a/lib/librte_eal/common/include/rte_dev.h b/lib/librte_eal/common/include/rte_dev.h
index a9724dc91..366beb7c0 100644
--- a/lib/librte_eal/common/include/rte_dev.h
+++ b/lib/librte_eal/common/include/rte_dev.h
@@ -43,54 +43,18 @@ typedef void (*rte_dev_event_cb_fn)(const char *device_name,
 					enum rte_dev_event_type event,
 					void *cb_arg);
 
-__attribute__((format(printf, 2, 0)))
-static inline void
-rte_pmd_debug_trace(const char *func_name, const char *fmt, ...)
-{
-	va_list ap;
-
-	va_start(ap, fmt);
-
-	{
-		char buffer[vsnprintf(NULL, 0, fmt, ap) + 1];
-
-		va_end(ap);
-
-		va_start(ap, fmt);
-		vsnprintf(buffer, sizeof(buffer), fmt, ap);
-		va_end(ap);
-
-		rte_log(RTE_LOG_ERR, RTE_LOGTYPE_PMD, "%s: %s",
-			func_name, buffer);
-	}
-}
-
 /*
  * Enable RTE_PMD_DEBUG_TRACE() when at least one component relying on the
  * RTE_*_RET() macros defined below is compiled in debug mode.
  */
 #if defined(RTE_LIBRTE_EVENTDEV_DEBUG)
-#define RTE_PMD_DEBUG_TRACE(...) \
-	rte_pmd_debug_trace(__func__, __VA_ARGS__)
+#define RTE_PMD_DEBUG_TRACE(fmt, ...)					\
+	rte_log(RTE_LOG_ERR, RTE_LOGTYPE_PMD, "%s: " fmt, __func__,	\
+		##__VA_ARGS__)
 #else
-#define RTE_PMD_DEBUG_TRACE(...) (void)0
+#define RTE_PMD_DEBUG_TRACE(...) do { } while(0)
 #endif
 
-/* Macros for checking for restricting functions to primary instance only */
-#define RTE_PROC_PRIMARY_OR_ERR_RET(retval) do { \
-	if (rte_eal_process_type() != RTE_PROC_PRIMARY) { \
-		RTE_PMD_DEBUG_TRACE("Cannot run in secondary processes\n"); \
-		return retval; \
-	} \
-} while (0)
-
-#define RTE_PROC_PRIMARY_OR_RET() do { \
-	if (rte_eal_process_type() != RTE_PROC_PRIMARY) { \
-		RTE_PMD_DEBUG_TRACE("Cannot run in secondary processes\n"); \
-		return; \
-	} \
-} while (0)
-
 /* Macros to check for invalid function pointers */
 #define RTE_FUNC_PTR_OR_ERR_RET(func, retval) do { \
 	if ((func) == NULL) { \
-- 
2.14.3