[dpdk-dev] [PATCH v8 07/11] eal/windows: add tracing support stubs

[Dmitry Kozlyuk]

EAL common code depends on tracepoint calls, but generic implementation
cannot be enabled on Windows due to missing standard library facilities.
Add stub functions to support tracepoint compilation, so that common
code does not have to conditionally include tracepoints until proper
support is added.

Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk at gmail.com>
---
 lib/librte_eal/common/eal_common_thread.c |  5 +---
 lib/librte_eal/common/meson.build         |  1 +
 lib/librte_eal/windows/eal.c              | 34 ++++++++++++++++++++++-
 3 files changed, 35 insertions(+), 5 deletions(-)

diff --git a/lib/librte_eal/common/eal_common_thread.c b/lib/librte_eal/common/eal_common_thread.c
index f9f588c17..370bb1b63 100644
--- a/lib/librte_eal/common/eal_common_thread.c
+++ b/lib/librte_eal/common/eal_common_thread.c
@@ -15,9 +15,7 @@
 #include <rte_lcore.h>
 #include <rte_memory.h>
 #include <rte_log.h>
-#ifndef RTE_EXEC_ENV_WINDOWS
 #include <rte_trace_point.h>
-#endif
 
 #include "eal_internal_cfg.h"
 #include "eal_private.h"
@@ -169,9 +167,8 @@ static void *rte_thread_init(void *arg)
 		free(params);
 	}
 
-#ifndef RTE_EXEC_ENV_WINDOWS
 	__rte_trace_mem_per_thread_alloc();
-#endif
+
 	return start_routine(routine_arg);
 }
 
diff --git a/lib/librte_eal/common/meson.build b/lib/librte_eal/common/meson.build
index d91c22220..4e9208129 100644
--- a/lib/librte_eal/common/meson.build
+++ b/lib/librte_eal/common/meson.build
@@ -14,6 +14,7 @@ if is_windows
 		'eal_common_log.c',
 		'eal_common_options.c',
 		'eal_common_thread.c',
+		'eal_common_trace_points.c',
 	)
 	subdir_done()
 endif
diff --git a/lib/librte_eal/windows/eal.c b/lib/librte_eal/windows/eal.c
index d084606a6..e7461f731 100644
--- a/lib/librte_eal/windows/eal.c
+++ b/lib/librte_eal/windows/eal.c
@@ -17,6 +17,7 @@
 #include <eal_filesystem.h>
 #include <eal_options.h>
 #include <eal_private.h>
+#include <rte_trace_point.h>
 
 #include "eal_windows.h"
 
@@ -221,7 +222,38 @@ rte_eal_init_alert(const char *msg)
 	RTE_LOG(ERR, EAL, "%s\n", msg);
 }
 
- /* Launch threads, called at application init(). */
+/* Stubs to enable EAL trace point compilation
+ * until eal_common_trace.c can be compiled.
+ */
+
+RTE_DEFINE_PER_LCORE(volatile int, trace_point_sz);
+RTE_DEFINE_PER_LCORE(void *, trace_mem);
+
+void
+__rte_trace_mem_per_thread_alloc(void)
+{
+}
+
+void
+__rte_trace_point_emit_field(size_t sz, const char *field,
+	const char *type)
+{
+	RTE_SET_USED(sz);
+	RTE_SET_USED(field);
+	RTE_SET_USED(type);
+}
+
+int
+__rte_trace_point_register(rte_trace_point_t *trace, const char *name,
+	void (*register_fn)(void))
+{
+	RTE_SET_USED(trace);
+	RTE_SET_USED(name);
+	RTE_SET_USED(register_fn);
+	return -ENOTSUP;
+}
+
+/* Launch threads, called at application init(). */
 int
 rte_eal_init(int argc, char **argv)
 {
-- 
2.25.4