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From: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Florent Revest <revest@chromium.org>
Cc: linux-trace-kernel@vger.kernel.org,
	LKML <linux-kernel@vger.kernel.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>,
	Mark Rutland <mark.rutland@arm.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>, Guo Ren <guoren@kernel.org>
Subject: [PATCH v5 10/34] ftrace: Allow ftrace startup flags exist without dynamic ftrace
Date: Mon, 18 Dec 2023 22:13:33 +0900	[thread overview]
Message-ID: <170290521312.220107.11377564145378408570.stgit@devnote2> (raw)
In-Reply-To: <170290509018.220107.1347127510564358608.stgit@devnote2>

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().

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.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 0955baccbb87..7b08169aa51d 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -538,6 +538,15 @@ 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);
@@ -632,15 +641,6 @@ 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()


  parent reply	other threads:[~2023-12-18 13:13 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-18 13:11 [PATCH v5 00/34] tracing: fprobe: function_graph: Multi-function graph and fprobe on fgraph Masami Hiramatsu (Google)
2023-12-18 13:11 ` [PATCH v5 01/34] tracing: Add a comment about ftrace_regs definition Masami Hiramatsu (Google)
2024-01-05 17:12   ` Mark Rutland
2023-12-18 13:11 ` [PATCH v5 02/34] x86: tracing: Add ftrace_regs definition in the header Masami Hiramatsu (Google)
2023-12-18 13:12 ` [PATCH v5 03/34] function_graph: Convert ret_stack to a series of longs Masami Hiramatsu (Google)
2023-12-18 13:12 ` [PATCH v5 04/34] fgraph: Use BUILD_BUG_ON() to make sure we have structures divisible by long Masami Hiramatsu (Google)
2023-12-18 13:12 ` [PATCH v5 05/34] function_graph: Add an array structure that will allow multiple callbacks Masami Hiramatsu (Google)
2023-12-18 13:12 ` [PATCH v5 06/34] function_graph: Allow multiple users to attach to function graph Masami Hiramatsu (Google)
2023-12-19 13:23   ` Jiri Olsa
2023-12-19 15:45     ` Masami Hiramatsu
2023-12-26 15:24       ` Masami Hiramatsu
2023-12-18 13:12 ` [PATCH v5 07/34] function_graph: Remove logic around ftrace_graph_entry and return Masami Hiramatsu (Google)
2023-12-18 13:13 ` [PATCH v5 08/34] ftrace/function_graph: Pass fgraph_ops to function graph callbacks Masami Hiramatsu (Google)
2023-12-18 13:13 ` [PATCH v5 09/34] ftrace: Allow function_graph tracer to be enabled in instances Masami Hiramatsu (Google)
2023-12-18 13:13 ` Masami Hiramatsu (Google) [this message]
2023-12-18 13:13 ` [PATCH v5 11/34] function_graph: Have the instances use their own ftrace_ops for filtering Masami Hiramatsu (Google)
2023-12-26  0:20   ` Masami Hiramatsu
2024-01-05 17:09   ` Mark Rutland
2024-01-08  1:14     ` Masami Hiramatsu
2024-01-08 12:25       ` Mark Rutland
2024-01-08 14:21         ` Mark Rutland
2024-01-08 15:03           ` Mark Rutland
2024-01-11 13:47             ` Masami Hiramatsu
2024-01-11  2:15         ` Masami Hiramatsu
2024-01-11 11:01           ` Mark Rutland
2024-01-11 13:45             ` Masami Hiramatsu
2023-12-18 13:13 ` [PATCH v5 12/34] function_graph: Use a simple LRU for fgraph_array index number Masami Hiramatsu (Google)
2023-12-18 13:14 ` [PATCH v5 13/34] function_graph: Add "task variables" per task for fgraph_ops Masami Hiramatsu (Google)
2023-12-18 13:14 ` [PATCH v5 14/34] function_graph: Move set_graph_function tests to shadow stack global var Masami Hiramatsu (Google)
2023-12-18 13:14 ` [PATCH v5 15/34] function_graph: Move graph depth stored data " Masami Hiramatsu (Google)
2023-12-18 13:14 ` [PATCH v5 16/34] function_graph: Move graph notrace bit " Masami Hiramatsu (Google)
2023-12-18 13:15 ` [PATCH v5 17/34] function_graph: Implement fgraph_reserve_data() and fgraph_retrieve_data() Masami Hiramatsu (Google)
2023-12-18 13:15 ` [PATCH v5 18/34] function_graph: Add selftest for passing local variables Masami Hiramatsu (Google)
2023-12-18 13:15 ` [PATCH v5 19/34] function_graph: Add a new entry handler with parent_ip and ftrace_regs Masami Hiramatsu (Google)
2023-12-18 13:15 ` [PATCH v5 20/34] function_graph: Add a new exit " Masami Hiramatsu (Google)
2023-12-18 13:15 ` [PATCH v5 21/34] x86/ftrace: Enable HAVE_FUNCTION_GRAPH_FREGS Masami Hiramatsu (Google)
2023-12-18 13:15 ` [PATCH v5 22/34] tracing: Rename ftrace_regs_return_value to ftrace_regs_get_return_value Masami Hiramatsu (Google)
2024-01-05 17:14   ` Mark Rutland
2024-01-08  1:09     ` Masami Hiramatsu
2023-12-18 13:16 ` [PATCH v5 23/34] arm64: ftrace: Enable HAVE_FUNCTION_GRAPH_FREGS Masami Hiramatsu (Google)
2023-12-18 13:16 ` [PATCH v5 24/34] fprobe: Use ftrace_regs in fprobe entry handler Masami Hiramatsu (Google)
2023-12-19 13:23   ` Jiri Olsa
2023-12-19 13:23   ` Jiri Olsa
2023-12-19 22:51     ` Masami Hiramatsu
2023-12-18 13:16 ` [PATCH v5 25/34] fprobe: Use ftrace_regs in fprobe exit handler Masami Hiramatsu (Google)
2023-12-18 13:16 ` [PATCH v5 26/34] tracing: Add ftrace_partial_regs() for converting ftrace_regs to pt_regs Masami Hiramatsu (Google)
2023-12-18 13:16 ` [PATCH v5 27/34] tracing: Add ftrace_fill_perf_regs() for perf event Masami Hiramatsu (Google)
2023-12-18 13:17 ` [PATCH v5 28/34] fprobe: Rewrite fprobe on function-graph tracer Masami Hiramatsu (Google)
2023-12-19 14:39   ` Jiri Olsa
2023-12-20  1:00     ` Masami Hiramatsu
2023-12-18 13:17 ` [PATCH v5 29/34] tracing/fprobe: Remove nr_maxactive from fprobe Masami Hiramatsu (Google)
2023-12-18 13:17 ` [PATCH v5 30/34] tracing/fprobe: Enable fprobe events with CONFIG_DYNAMIC_FTRACE_WITH_ARGS Masami Hiramatsu (Google)
2023-12-18 13:17 ` [PATCH v5 31/34] bpf: Enable kprobe_multi feature if CONFIG_FPROBE is enabled Masami Hiramatsu (Google)
2023-12-18 13:17 ` [PATCH v5 32/34] selftests: ftrace: Remove obsolate maxactive syntax check Masami Hiramatsu (Google)
2023-12-18 13:18 ` [PATCH v5 33/34] selftests/ftrace: Add a test case for repeating register/unregister fprobe Masami Hiramatsu (Google)
2023-12-18 13:18 ` [PATCH v5 34/34] Documentation: probes: Update fprobe on function-graph tracer Masami Hiramatsu (Google)

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