Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 197 insertions, 0 deletions

diff --git a/src/spdk/include/spdk_internal/event.h b/src/spdk/include/spdk_internal/event.h
new file mode 100644
index 000000000..2d88d08ba
--- /dev/null
+++ b/src/spdk/include/spdk_internal/event.h
@@ -0,0 +1,197 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) Intel Corporation.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef SPDK_INTERNAL_EVENT_H
+#define SPDK_INTERNAL_EVENT_H
+
+#include "spdk/stdinc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "spdk/event.h"
+#include "spdk/json.h"
+#include "spdk/thread.h"
+#include "spdk/util.h"
+
+struct spdk_event {
+	uint32_t		lcore;
+	spdk_event_fn		fn;
+	void			*arg1;
+	void			*arg2;
+};
+
+enum spdk_reactor_state {
+	SPDK_REACTOR_STATE_UNINITIALIZED = 0,
+	SPDK_REACTOR_STATE_INITIALIZED = 1,
+	SPDK_REACTOR_STATE_RUNNING = 2,
+	SPDK_REACTOR_STATE_EXITING = 3,
+	SPDK_REACTOR_STATE_SHUTDOWN = 4,
+};
+
+struct spdk_lw_thread {
+	TAILQ_ENTRY(spdk_lw_thread)	link;
+	bool				resched;
+	uint64_t			tsc_start;
+};
+
+struct spdk_reactor {
+	/* Lightweight threads running on this reactor */
+	TAILQ_HEAD(, spdk_lw_thread)			threads;
+	uint32_t					thread_count;
+
+	/* Logical core number for this reactor. */
+	uint32_t					lcore;
+
+	struct {
+		uint32_t				is_valid : 1;
+		uint32_t				reserved : 31;
+	} flags;
+
+	uint64_t					tsc_last;
+
+	struct spdk_ring				*events;
+
+	/* The last known rusage values */
+	struct rusage					rusage;
+	uint64_t					last_rusage;
+
+	uint64_t					busy_tsc;
+	uint64_t					idle_tsc;
+} __attribute__((aligned(SPDK_CACHE_LINE_SIZE)));
+
+int spdk_reactors_init(void);
+void spdk_reactors_fini(void);
+
+void spdk_reactors_start(void);
+void spdk_reactors_stop(void *arg1);
+
+struct spdk_reactor *spdk_reactor_get(uint32_t lcore);
+
+/**
+ * Allocate and pass an event to each reactor, serially.
+ *
+ * The allocated event is processed asynchronously - i.e. spdk_for_each_reactor
+ * will return prior to `fn` being called on each reactor.
+ *
+ * \param fn This is the function that will be called on each reactor.
+ * \param arg1 Argument will be passed to fn when called.
+ * \param arg2 Argument will be passed to fn when called.
+ * \param cpl This will be called on the originating reactor after `fn` has been
+ * called on each reactor.
+ */
+void spdk_for_each_reactor(spdk_event_fn fn, void *arg1, void *arg2, spdk_event_fn cpl);
+
+struct spdk_subsystem {
+	const char *name;
+	/* User must call spdk_subsystem_init_next() when they are done with their initialization. */
+	void (*init)(void);
+	void (*fini)(void);
+	void (*config)(FILE *fp);
+
+	/**
+	 * Write JSON configuration handler.
+	 *
+	 * \param w JSON write context
+	 */
+	void (*write_config_json)(struct spdk_json_write_ctx *w);
+	TAILQ_ENTRY(spdk_subsystem) tailq;
+};
+
+struct spdk_subsystem *spdk_subsystem_find(const char *name);
+struct spdk_subsystem *spdk_subsystem_get_first(void);
+struct spdk_subsystem *spdk_subsystem_get_next(struct spdk_subsystem *cur_subsystem);
+
+struct spdk_subsystem_depend {
+	const char *name;
+	const char *depends_on;
+	TAILQ_ENTRY(spdk_subsystem_depend) tailq;
+};
+
+struct spdk_subsystem_depend *spdk_subsystem_get_first_depend(void);
+struct spdk_subsystem_depend *spdk_subsystem_get_next_depend(struct spdk_subsystem_depend
+		*cur_depend);
+
+void spdk_add_subsystem(struct spdk_subsystem *subsystem);
+void spdk_add_subsystem_depend(struct spdk_subsystem_depend *depend);
+
+typedef void (*spdk_subsystem_init_fn)(int rc, void *ctx);
+void spdk_subsystem_init(spdk_subsystem_init_fn cb_fn, void *cb_arg);
+void spdk_subsystem_fini(spdk_msg_fn cb_fn, void *cb_arg);
+void spdk_subsystem_init_next(int rc);
+void spdk_subsystem_fini_next(void);
+void spdk_subsystem_config(FILE *fp);
+void spdk_app_json_config_load(const char *json_config_file, const char *rpc_addr,
+			       spdk_subsystem_init_fn cb_fn, void *cb_arg,
+			       bool stop_on_error);
+
+/**
+ * Save pointed \c subsystem configuration to the JSON write context \c w. In case of
+ * error \c null is written to the JSON context.
+ *
+ * \param w JSON write context
+ * \param subsystem the subsystem to query
+ */
+void spdk_subsystem_config_json(struct spdk_json_write_ctx *w, struct spdk_subsystem *subsystem);
+
+void spdk_rpc_initialize(const char *listen_addr);
+void spdk_rpc_finish(void);
+
+/**
+ * \brief Register a new subsystem
+ */
+#define SPDK_SUBSYSTEM_REGISTER(_name) \
+	__attribute__((constructor)) static void _name ## _register(void)	\
+	{									\
+		spdk_add_subsystem(&_name);					\
+	}
+
+/**
+ * \brief Declare that a subsystem depends on another subsystem.
+ */
+#define SPDK_SUBSYSTEM_DEPEND(_name, _depends_on)						\
+	static struct spdk_subsystem_depend __subsystem_ ## _name ## _depend_on ## _depends_on = { \
+	.name = #_name,										\
+	.depends_on = #_depends_on,								\
+	};											\
+	__attribute__((constructor)) static void _name ## _depend_on ## _depends_on(void)	\
+	{											\
+		spdk_add_subsystem_depend(&__subsystem_ ## _name ## _depend_on ## _depends_on); \
+	}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SPDK_INTERNAL_EVENT_H */