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rte_trace.h(3) DPDK rte_trace.h(3) 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. Version 25.11.0 Thu Jun 11 2026 rte_trace.h(3)
NAME | SYNOPSIS | Detailed Description | Enumeration Type Documentation | Function Documentation | Author
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