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7f4f3b14e8
- Allow Rust code to have trace events Trace events is a popular way to debug what is happening inside the kernel or just to find out what is happening. Rust code is being added to the Linux kernel but it currently does not support the tracing infrastructure. Add support of trace events inside Rust code. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZ0DjqhQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qrLlAPsF6t/c1nHSGTKDv9FJDJe4JHdP7e+U 7X0S8BmSTKFNAQD+K2TEd0bjVP7ug8dQZBT+fveiFr+ARYxAwJ3JnEFjUwg= =Ab+T -----END PGP SIGNATURE----- Merge tag 'trace-rust-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull rust trace event support from Steven Rostedt: "Allow Rust code to have trace events Trace events is a popular way to debug what is happening inside the kernel or just to find out what is happening. Rust code is being added to the Linux kernel but it currently does not support the tracing infrastructure. Add support of trace events inside Rust code" * tag 'trace-rust-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: rust: jump_label: skip formatting generated file jump_label: rust: pass a mut ptr to `static_key_count` samples: rust: fix `rust_print` build making it a combined module rust: add arch_static_branch jump_label: adjust inline asm to be consistent rust: samples: add tracepoint to Rust sample rust: add tracepoint support rust: add static_branch_unlikely for static_key_false
153 lines
4.4 KiB
C
153 lines
4.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Trace files that want to automate creation of all tracepoints defined
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* in their file should include this file. The following are macros that the
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* trace file may define:
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*
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* TRACE_SYSTEM defines the system the tracepoint is for
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*
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* TRACE_INCLUDE_FILE if the file name is something other than TRACE_SYSTEM.h
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* This macro may be defined to tell define_trace.h what file to include.
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* Note, leave off the ".h".
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*
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* TRACE_INCLUDE_PATH if the path is something other than core kernel include/trace
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* then this macro can define the path to use. Note, the path is relative to
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* define_trace.h, not the file including it. Full path names for out of tree
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* modules must be used.
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*/
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#ifdef CREATE_TRACE_POINTS
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/* Prevent recursion */
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#undef CREATE_TRACE_POINTS
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#include <linux/stringify.h>
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#undef TRACE_EVENT
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#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
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DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
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#undef TRACE_EVENT_CONDITION
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#define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \
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TRACE_EVENT(name, \
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PARAMS(proto), \
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PARAMS(args), \
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PARAMS(tstruct), \
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PARAMS(assign), \
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PARAMS(print))
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#undef TRACE_EVENT_FN
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#define TRACE_EVENT_FN(name, proto, args, tstruct, \
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assign, print, reg, unreg) \
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DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args))
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#undef TRACE_EVENT_FN_COND
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#define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct, \
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assign, print, reg, unreg) \
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DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args))
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#undef TRACE_EVENT_SYSCALL
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#define TRACE_EVENT_SYSCALL(name, proto, args, struct, assign, print, reg, unreg) \
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DEFINE_TRACE_SYSCALL(name, reg, unreg, PARAMS(proto), PARAMS(args))
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#undef TRACE_EVENT_NOP
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#define TRACE_EVENT_NOP(name, proto, args, struct, assign, print)
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#undef DEFINE_EVENT_NOP
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#define DEFINE_EVENT_NOP(template, name, proto, args)
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#undef DEFINE_EVENT
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#define DEFINE_EVENT(template, name, proto, args) \
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DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
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#undef DEFINE_EVENT_FN
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#define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \
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DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args))
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#undef DEFINE_EVENT_PRINT
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#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
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DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
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#undef DEFINE_EVENT_CONDITION
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#define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \
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DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
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#undef DECLARE_TRACE
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#define DECLARE_TRACE(name, proto, args) \
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DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
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/* If requested, create helpers for calling these tracepoints from Rust. */
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#ifdef CREATE_RUST_TRACE_POINTS
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#undef DEFINE_RUST_DO_TRACE
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#define DEFINE_RUST_DO_TRACE(name, proto, args) \
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__DEFINE_RUST_DO_TRACE(name, PARAMS(proto), PARAMS(args))
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#endif
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#undef TRACE_INCLUDE
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#undef __TRACE_INCLUDE
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#ifndef TRACE_INCLUDE_FILE
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# define TRACE_INCLUDE_FILE TRACE_SYSTEM
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# define UNDEF_TRACE_INCLUDE_FILE
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#endif
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#ifndef TRACE_INCLUDE_PATH
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# define __TRACE_INCLUDE(system) <trace/events/system.h>
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# define UNDEF_TRACE_INCLUDE_PATH
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#else
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# define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h)
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#endif
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# define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)
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/* Let the trace headers be reread */
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#define TRACE_HEADER_MULTI_READ
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#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
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/* Make all open coded DECLARE_TRACE nops */
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#undef DECLARE_TRACE
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#define DECLARE_TRACE(name, proto, args)
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#ifdef TRACEPOINTS_ENABLED
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#include <trace/trace_events.h>
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#include <trace/perf.h>
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#include <trace/bpf_probe.h>
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#endif
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#undef TRACE_EVENT
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#undef TRACE_EVENT_FN
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#undef TRACE_EVENT_FN_COND
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#undef TRACE_EVENT_SYSCALL
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#undef TRACE_EVENT_CONDITION
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#undef TRACE_EVENT_NOP
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#undef DEFINE_EVENT_NOP
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#undef DECLARE_EVENT_CLASS
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#undef DEFINE_EVENT
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#undef DEFINE_EVENT_FN
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#undef DEFINE_EVENT_PRINT
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#undef DEFINE_EVENT_CONDITION
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#undef TRACE_HEADER_MULTI_READ
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#undef DECLARE_TRACE
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/* Only undef what we defined in this file */
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#ifdef UNDEF_TRACE_INCLUDE_FILE
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# undef TRACE_INCLUDE_FILE
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# undef UNDEF_TRACE_INCLUDE_FILE
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#endif
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#ifdef UNDEF_TRACE_INCLUDE_PATH
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# undef TRACE_INCLUDE_PATH
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# undef UNDEF_TRACE_INCLUDE_PATH
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#endif
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#ifdef CREATE_RUST_TRACE_POINTS
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# undef DEFINE_RUST_DO_TRACE
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# define DEFINE_RUST_DO_TRACE(name, proto, args)
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#endif
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/* We may be processing more files */
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#define CREATE_TRACE_POINTS
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#endif /* CREATE_TRACE_POINTS */
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