NAME

       rte_trace.h

SYNOPSIS

       #include <stdbool.h>
       #include <stdio.h>
       #include <rte_common.h>
       #include <rte_compat.h>

   Enumerations
       enum rte_trace_mode { RTE_TRACE_MODE_OVERWRITE, RTE_TRACE_MODE_DISCARD }

   Functions
       __rte_experimental bool rte_trace_is_enabled (void)
       static __rte_experimental __rte_always_inline bool rte_trace_feature_is_enabled (void)
       __rte_experimental void rte_trace_mode_set (enum rte_trace_mode mode)
       __rte_experimental enum rte_trace_mode rte_trace_mode_get (void)
       __rte_experimental int rte_trace_pattern (const char *pattern, bool enable)
       __rte_experimental int rte_trace_regexp (const char *regex, bool enable)
       __rte_experimental int rte_trace_save (void)
       __rte_experimental int rte_trace_metadata_dump (FILE *f)
       __rte_experimental void rte_trace_dump (FILE *f)

Detailed Description

       RTE Trace API

       This file provides the trace API to RTE applications.

       Warning
           EXPERIMENTAL: this API may change without prior notice

       Definition in file rte_trace.h.

Enumeration Type Documentation

   enum rte_trace_mode
       Enumerate trace mode operation.

       Enumerator

       RTE_TRACE_MODE_OVERWRITE
              In  this  mode, when no space is left in the trace buffer, the subsequent events overwrite the old
              events.

       RTE_TRACE_MODE_DISCARD
              In this mode, when no space is left in the trace  buffer,  the  subsequent  events  shall  not  be
              recorded.

       Definition at line 61 of file rte_trace.h.

Function Documentation

   __rte_experimental bool rte_trace_is_enabled (void)
       Test if trace is enabled.

       Returns
           true if trace is enabled, false otherwise.

   static __rte_experimental __rte_always_inline bool rte_trace_feature_is_enabled (void) [static]
       Warning
           EXPERIMENTAL: this API may change, or be removed, without prior notice

       Test if trace feature is enabled at compile time.

       Returns
           true if trace feature is enabled, false otherwise.

       Definition at line 49 of file rte_trace.h.

   __rte_experimental void rte_trace_mode_set (enum rte_trace_mode mode)
       Set the trace mode.

       Parameters
           mode Trace mode.

   __rte_experimental enum rte_trace_mode rte_trace_mode_get (void)
       Get the trace mode.

       Returns
           The current trace mode.

   __rte_experimental int rte_trace_pattern (const char * pattern, bool enable)
       Enable/Disable a set of tracepoints based on globbing pattern.

       Parameters
           pattern The globbing pattern identifying the tracepoint.
           enable true to enable tracepoint, false to disable the tracepoint, upon match.

       Returns

           • 0: Success and no pattern match.

           • 1: Success and found pattern match.

           • (-ERANGE): Tracepoint object is not registered.

   __rte_experimental int rte_trace_regexp (const char * regex, bool enable)
       Enable/Disable a set of tracepoints based on regular expression.

       Parameters
           regex A regular expression identifying the tracepoint.
           enable true to enable tracepoint, false to disable the tracepoint, upon match.

       Returns

           • 0: Success and no pattern match.

           • 1: Success and found pattern match.

           • (-ERANGE): Tracepoint object is not registered.

           • (-EINVAL): Invalid regular expression rule.

   __rte_experimental int rte_trace_save (void)
       Save the trace buffer to the trace directory.

       By  default, trace directory will be created at $HOME directory and this can be overridden by --trace-dir
       EAL parameter.

       Returns

           • 0: Success.

           • <0 : Failure.

   __rte_experimental int rte_trace_metadata_dump (FILE * f)
       Dump the trace metadata to a file.

       Parameters
           f A pointer to a file for output

       Returns

           • 0: Success.

           • <0 : Failure.

   __rte_experimental void rte_trace_dump (FILE * f)
       Dump the trace subsystem status to a file.

       Parameters
           f A pointer to a file for output

Author

       Generated automatically by Doxygen for DPDK from the source code.

DPDK                                             Version 24.11.2                                  rte_trace.h(3)