From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Andrew Morton <akpm@linux-foundation.org>,
Alexei Starovoitov <alexei.starovoitov@gmail.com>,
Florent Revest <revest@chromium.org>,
Martin KaFai Lau <martin.lau@linux.dev>,
bpf <bpf@vger.kernel.org>, Sven Schnelle <svens@linux.ibm.com>,
Alexei Starovoitov <ast@kernel.org>, Jiri Olsa <jolsa@kernel.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Alan Maguire <alan.maguire@oracle.com>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>, Guo Ren <guoren@kernel.org>
Subject: [PATCH v2 09/27] ftrace: Allow ftrace startup flags to exist without dynamic ftrace
Date: Sat, 01 Jun 2024 23:37:53 -0400 [thread overview]
Message-ID: <20240602033832.548134509@goodmis.org> (raw)
In-Reply-To: 20240602033744.563858532@goodmis.org
From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
Some of the flags for ftrace_startup() may be exposed even when
CONFIG_DYNAMIC_FTRACE is not configured in. This is fine as the difference
between dynamic ftrace and static ftrace is done within the internals of
ftrace itself. No need to have use cases fail to compile because dynamic
ftrace is disabled.
This change is needed to move some of the logic of what is passed to
ftrace_startup() out of the parameters of ftrace_startup().
Link: https://lore.kernel.org/linux-trace-kernel/171509100890.162236.4362350342549122222.stgit@devnote2
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---
include/linux/ftrace.h | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index fd656e6d6b7c..586018744785 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -509,6 +509,15 @@ static inline void stack_tracer_disable(void) { }
static inline void stack_tracer_enable(void) { }
#endif
+enum {
+ FTRACE_UPDATE_CALLS = (1 << 0),
+ FTRACE_DISABLE_CALLS = (1 << 1),
+ FTRACE_UPDATE_TRACE_FUNC = (1 << 2),
+ FTRACE_START_FUNC_RET = (1 << 3),
+ FTRACE_STOP_FUNC_RET = (1 << 4),
+ FTRACE_MAY_SLEEP = (1 << 5),
+};
+
#ifdef CONFIG_DYNAMIC_FTRACE
void ftrace_arch_code_modify_prepare(void);
@@ -603,15 +612,6 @@ void ftrace_set_global_notrace(unsigned char *buf, int len, int reset);
void ftrace_free_filter(struct ftrace_ops *ops);
void ftrace_ops_set_global_filter(struct ftrace_ops *ops);
-enum {
- FTRACE_UPDATE_CALLS = (1 << 0),
- FTRACE_DISABLE_CALLS = (1 << 1),
- FTRACE_UPDATE_TRACE_FUNC = (1 << 2),
- FTRACE_START_FUNC_RET = (1 << 3),
- FTRACE_STOP_FUNC_RET = (1 << 4),
- FTRACE_MAY_SLEEP = (1 << 5),
-};
-
/*
* The FTRACE_UPDATE_* enum is used to pass information back
* from the ftrace_update_record() and ftrace_test_record()
--
2.43.0
next prev parent reply other threads:[~2024-06-02 3:37 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-02 3:37 [PATCH v2 00/27] function_graph: Allow multiple users for function graph tracing Steven Rostedt
2024-06-02 3:37 ` [PATCH v2 01/27] function_graph: Convert ret_stack to a series of longs Steven Rostedt
2024-06-02 3:37 ` [PATCH v2 02/27] fgraph: Use BUILD_BUG_ON() to make sure we have structures divisible by long Steven Rostedt
2024-06-02 3:37 ` [PATCH v2 03/27] function_graph: Add an array structure that will allow multiple callbacks Steven Rostedt
2024-06-02 3:37 ` [PATCH v2 04/27] function_graph: Allow multiple users to attach to function graph Steven Rostedt
2024-06-02 3:37 ` [PATCH v2 05/27] function_graph: Handle tail calls for stack unwinding Steven Rostedt
2024-06-02 3:37 ` [PATCH v2 06/27] function_graph: Remove logic around ftrace_graph_entry and return Steven Rostedt
2024-06-02 3:37 ` [PATCH v2 07/27] ftrace/function_graph: Pass fgraph_ops to function graph callbacks Steven Rostedt
2024-06-02 3:37 ` [PATCH v2 08/27] ftrace: Allow function_graph tracer to be enabled in instances Steven Rostedt
2024-06-02 3:37 ` Steven Rostedt [this message]
2024-06-02 3:37 ` [PATCH v2 10/27] ftrace: Add subops logic to allow one ops to manage many Steven Rostedt
2024-06-03 1:33 ` Masami Hiramatsu
2024-06-03 2:06 ` Steven Rostedt
2024-06-03 2:46 ` Masami Hiramatsu
2024-06-03 14:54 ` Steven Rostedt
2024-06-03 17:05 ` Steven Rostedt
2024-06-02 3:37 ` [PATCH v2 11/27] ftrace: Allow subops filtering to be modified Steven Rostedt
2024-06-03 2:37 ` Masami Hiramatsu
2024-06-03 14:52 ` Steven Rostedt
2024-06-03 23:12 ` Masami Hiramatsu
2024-06-02 3:37 ` [PATCH v2 12/27] function_graph: Have the instances use their own ftrace_ops for filtering Steven Rostedt
2024-06-02 3:37 ` [PATCH v2 13/27] function_graph: Add pid tracing back to function graph tracer Steven Rostedt
2024-06-02 3:37 ` [PATCH v2 14/27] function_graph: Use a simple LRU for fgraph_array index number Steven Rostedt
2024-06-02 3:37 ` [PATCH v2 15/27] function_graph: Add "task variables" per task for fgraph_ops Steven Rostedt
2024-06-02 3:38 ` [PATCH v2 16/27] function_graph: Move set_graph_function tests to shadow stack global var Steven Rostedt
2024-06-02 3:38 ` [PATCH v2 17/27] function_graph: Move graph depth stored data " Steven Rostedt
2024-06-02 3:38 ` [PATCH v2 18/27] function_graph: Move graph notrace bit " Steven Rostedt
2024-06-02 3:38 ` [PATCH v2 19/27] function_graph: Implement fgraph_reserve_data() and fgraph_retrieve_data() Steven Rostedt
2024-06-02 3:38 ` [PATCH v2 20/27] function_graph: Add selftest for passing local variables Steven Rostedt
2024-06-02 3:38 ` [PATCH v2 21/27] ftrace: Add multiple fgraph storage selftest Steven Rostedt
2024-06-02 3:38 ` [PATCH v2 22/27] function_graph: Use for_each_set_bit() in __ftrace_return_to_handler() Steven Rostedt
2024-06-02 3:38 ` [PATCH v2 23/27] function_graph: Use bitmask to loop on fgraph entry Steven Rostedt
2024-06-02 3:38 ` [PATCH v2 24/27] function_graph: Use static_call and branch to optimize entry function Steven Rostedt
2024-06-03 3:11 ` Masami Hiramatsu
2024-06-03 15:00 ` Steven Rostedt
2024-06-03 15:07 ` Steven Rostedt
2024-06-03 23:08 ` Masami Hiramatsu
2024-06-02 3:38 ` [PATCH v2 25/27] function_graph: Use static_call and branch to optimize return function Steven Rostedt
2024-06-02 3:38 ` [PATCH v2 26/27] selftests/ftrace: Add function_graph tracer to func-filter-pid test Steven Rostedt
2024-06-02 3:38 ` [PATCH v2 27/27] selftests/ftrace: Add fgraph-multi.tc test Steven Rostedt
2024-06-02 3:44 ` [PATCH v2 00/27] function_graph: Allow multiple users for function graph tracing Steven Rostedt
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