bdece622f5
Change-Id: I472fb7e7a82e1337c6c06b1d3bb4e8a2a13d884a Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
185 lines
5.6 KiB
C
185 lines
5.6 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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* Tracepoint library
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*/
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#ifndef _SPDK_TRACE_H_
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#define _SPDK_TRACE_H_
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#include <inttypes.h>
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#include <limits.h>
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#include <rte_config.h>
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#include <rte_lcore.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SPDK_TRACE_SIZE (32 * 1024)
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struct spdk_trace_entry {
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uint64_t tsc;
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uint16_t tpoint_id;
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uint16_t poller_id;
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uint32_t size;
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uint64_t object_id;
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uint64_t arg1;
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};
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/* If type changes from a uint8_t, change this value. */
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#define SPDK_TRACE_MAX_OWNER (UCHAR_MAX + 1)
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struct spdk_trace_owner {
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uint8_t type;
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char id_prefix;
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};
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/* If type changes from a uint8_t, change this value. */
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#define SPDK_TRACE_MAX_OBJECT (UCHAR_MAX + 1)
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struct spdk_trace_object {
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uint8_t type;
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char id_prefix;
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};
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#define SPDK_TRACE_MAX_GROUP_ID 16
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#define SPDK_TRACE_MAX_TPOINT_ID (SPDK_TRACE_MAX_GROUP_ID * 64)
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#define SPDK_TPOINT_ID(group, tpoint) ((group * 64) + tpoint)
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struct spdk_trace_tpoint {
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char name[24];
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char short_name[4];
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uint16_t tpoint_id;
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uint8_t owner_type;
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uint8_t object_type;
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uint8_t new_object;
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uint8_t arg1_is_ptr;
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uint8_t arg1_is_alias;
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char arg1_name[8];
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};
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struct spdk_trace_history {
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/** Logical core number associated with this structure instance. */
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int lcore;
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/**
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* Circular buffer of spdk_trace_entry structures for tracing
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* tpoints on this core. Debug tool spdk_trace reads this
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* buffer from shared memory to post-process the tpoint entries and
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* display in a human-readable format.
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*/
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struct spdk_trace_entry entries[SPDK_TRACE_SIZE];
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/**
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* Running count of number of occurrences of each tracepoint on this
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* lcore. Debug tools can use this to easily count tracepoints such as
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* number of SCSI tasks completed or PDUs read.
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*/
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uint64_t tpoint_count[SPDK_TRACE_MAX_TPOINT_ID];
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/** Index to next spdk_trace_entry to fill in the circular buffer. */
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uint32_t next_entry;
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};
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struct spdk_trace_histories {
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uint64_t tsc_rate;
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uint64_t tpoint_mask[SPDK_TRACE_MAX_GROUP_ID];
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struct spdk_trace_history per_lcore_history[RTE_MAX_LCORE];
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struct spdk_trace_owner owner[UCHAR_MAX + 1];
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struct spdk_trace_object object[UCHAR_MAX + 1];
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struct spdk_trace_tpoint tpoint[SPDK_TRACE_MAX_TPOINT_ID];
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};
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void spdk_trace_record(uint16_t tpoint_id, uint16_t poller_id, uint32_t size,
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uint64_t object_id, uint64_t arg1);
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/** Returns the current tpoint mask. */
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uint64_t spdk_trace_get_tpoint_mask(uint32_t group_id);
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/** Adds the specified tpoints to the current tpoint mask for the given tpoint group. */
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void spdk_trace_set_tpoints(uint32_t group_id, uint64_t tpoint_mask);
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/** Clears the specified tpoints from the current tpoint mask for the given tpoint group. */
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void spdk_trace_clear_tpoints(uint32_t group_id, uint64_t tpoint_mask);
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/** Returns a mask of all tracepoint groups which have at least one tracepoint enabled. */
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uint64_t spdk_trace_get_tpoint_group_mask(void);
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/** For each tpoint group specified in the group mask, enable all of its tpoints. */
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void spdk_trace_set_tpoint_group_mask(uint64_t tpoint_group_mask);
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void spdk_trace_init(const char *shm_name);
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void spdk_trace_cleanup(void);
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#define OWNER_NONE 0
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#define OBJECT_NONE 0
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void spdk_trace_register_owner(uint8_t type, char id_prefix);
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void spdk_trace_register_object(uint8_t type, char id_prefix);
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void spdk_trace_register_description(const char *name, const char *short_name,
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uint16_t tpoint_id, uint8_t owner_type,
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uint8_t object_type, uint8_t new_object,
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uint8_t arg1_is_ptr, uint8_t arg1_is_alias,
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const char *arg1_name);
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struct spdk_trace_register_fn {
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void (*reg_fn)(void);
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struct spdk_trace_register_fn *next;
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};
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void spdk_trace_add_register_fn(struct spdk_trace_register_fn *reg_fn);
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#define SPDK_TRACE_REGISTER_FN(fn) \
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static void fn(void); \
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struct spdk_trace_register_fn reg_ ## fn = { \
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.reg_fn = fn, \
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.next = NULL, \
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}; \
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__attribute__((constructor)) static void _ ## fn(void) \
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{ \
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spdk_trace_add_register_fn(®_ ## fn); \
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} \
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static void fn(void)
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#ifdef __cplusplus
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}
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#endif
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#endif
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