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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 v6 12/36] ftrace: Allow ftrace startup flags exist without dynamic ftrace
Date: Fri, 12 Jan 2024 19:13:13 +0900	[thread overview]
Message-ID: <170505439363.459169.10485331447276132041.stgit@devnote2> (raw)
In-Reply-To: <170505424954.459169.10630626365737237288.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 4df3f44043b8..c385ded1875f 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:[~2024-01-12 10:13 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-12 10:10 [PATCH v6 00/36] tracing: fprobe: function_graph: Multi-function graph and fprobe on fgraph Masami Hiramatsu (Google)
2024-01-12 10:11 ` [PATCH v6 01/36] ftrace: Fix DIRECT_CALLS to use SAVE_REGS by default Masami Hiramatsu (Google)
2024-01-12 10:11 ` [PATCH v6 02/36] tracing: Add a comment about ftrace_regs definition Masami Hiramatsu (Google)
2024-01-12 10:11 ` [PATCH v6 03/36] tracing: Rename ftrace_regs_return_value to ftrace_regs_get_return_value Masami Hiramatsu (Google)
2024-01-12 10:11 ` [PATCH v6 04/36] x86: tracing: Add ftrace_regs definition in the header Masami Hiramatsu (Google)
2024-01-12 10:11 ` [PATCH v6 05/36] function_graph: Convert ret_stack to a series of longs Masami Hiramatsu (Google)
2024-01-12 10:12 ` [PATCH v6 06/36] fgraph: Use BUILD_BUG_ON() to make sure we have structures divisible by long Masami Hiramatsu (Google)
2024-01-12 10:12 ` [PATCH v6 07/36] function_graph: Add an array structure that will allow multiple callbacks Masami Hiramatsu (Google)
2024-01-12 10:12 ` [PATCH v6 08/36] function_graph: Allow multiple users to attach to function graph Masami Hiramatsu (Google)
2024-01-12 10:12 ` [PATCH v6 09/36] function_graph: Remove logic around ftrace_graph_entry and return Masami Hiramatsu (Google)
2024-01-12 10:12 ` [PATCH v6 10/36] ftrace/function_graph: Pass fgraph_ops to function graph callbacks Masami Hiramatsu (Google)
2024-01-12 10:13 ` [PATCH v6 11/36] ftrace: Allow function_graph tracer to be enabled in instances Masami Hiramatsu (Google)
2024-01-12 10:13 ` Masami Hiramatsu (Google) [this message]
2024-01-12 10:13 ` [PATCH v6 13/36] function_graph: Have the instances use their own ftrace_ops for filtering Masami Hiramatsu (Google)
2024-01-12 10:13 ` [PATCH v6 14/36] function_graph: Use a simple LRU for fgraph_array index number Masami Hiramatsu (Google)
2024-01-12 10:13 ` [PATCH v6 15/36] function_graph: Add "task variables" per task for fgraph_ops Masami Hiramatsu (Google)
2024-01-12 10:14 ` [PATCH v6 16/36] function_graph: Move set_graph_function tests to shadow stack global var Masami Hiramatsu (Google)
2024-01-12 10:14 ` [PATCH v6 17/36] function_graph: Move graph depth stored data " Masami Hiramatsu (Google)
2024-01-12 10:14 ` [PATCH v6 18/36] function_graph: Move graph notrace bit " Masami Hiramatsu (Google)
2024-01-12 10:14 ` [PATCH v6 19/36] function_graph: Implement fgraph_reserve_data() and fgraph_retrieve_data() Masami Hiramatsu (Google)
2024-01-12 10:14 ` [PATCH v6 20/36] function_graph: Improve push operation for several interrupts Masami Hiramatsu (Google)
2024-01-12 10:14 ` [PATCH v6 21/36] function_graph: Add selftest for passing local variables Masami Hiramatsu (Google)
2024-01-12 10:15 ` [PATCH v6 22/36] function_graph: Add a new entry handler with parent_ip and ftrace_regs Masami Hiramatsu (Google)
2024-01-12 10:15 ` [PATCH v6 23/36] function_graph: Add a new exit " Masami Hiramatsu (Google)
2024-01-12 10:15 ` [PATCH v6 24/36] x86/ftrace: Enable HAVE_FUNCTION_GRAPH_FREGS Masami Hiramatsu (Google)
2024-01-12 10:15 ` [PATCH v6 25/36] arm64: ftrace: " Masami Hiramatsu (Google)
2024-01-12 10:15 ` [PATCH v6 26/36] fprobe: Use ftrace_regs in fprobe entry handler Masami Hiramatsu (Google)
2024-01-12 10:16 ` [PATCH v6 27/36] fprobe: Use ftrace_regs in fprobe exit handler Masami Hiramatsu (Google)
2024-01-12 10:16 ` [PATCH v6 28/36] tracing: Add ftrace_partial_regs() for converting ftrace_regs to pt_regs Masami Hiramatsu (Google)
2024-01-12 10:16 ` [PATCH v6 29/36] tracing: Add ftrace_fill_perf_regs() for perf event Masami Hiramatsu (Google)
2024-01-12 10:16 ` [PATCH v6 30/36] tracing/fprobe: Enable fprobe events with CONFIG_DYNAMIC_FTRACE_WITH_ARGS Masami Hiramatsu (Google)
2024-01-12 10:16 ` [PATCH v6 31/36] bpf: Enable kprobe_multi feature if CONFIG_FPROBE is enabled Masami Hiramatsu (Google)
2024-01-12 10:17 ` [PATCH v6 32/36] fprobe: Rewrite fprobe on function-graph tracer Masami Hiramatsu (Google)
2024-01-25 15:11   ` Jiri Olsa
2024-01-26 15:24     ` Masami Hiramatsu
2024-01-12 10:17 ` [PATCH v6 33/36] tracing/fprobe: Remove nr_maxactive from fprobe Masami Hiramatsu (Google)
2024-01-12 10:17 ` [PATCH v6 34/36] selftests: ftrace: Remove obsolate maxactive syntax check Masami Hiramatsu (Google)
2024-01-12 10:17 ` [PATCH v6 35/36] selftests/ftrace: Add a test case for repeating register/unregister fprobe Masami Hiramatsu (Google)
2024-01-12 10:17 ` [PATCH v6 36/36] Documentation: probes: Update fprobe on function-graph tracer Masami Hiramatsu (Google)
2024-01-25 14:54 ` [PATCH v6 00/36] tracing: fprobe: function_graph: Multi-function graph and fprobe on fgraph Jiri Olsa
2024-01-26 15:14   ` Masami Hiramatsu
2024-01-27  0:56     ` Masami Hiramatsu
2024-01-27 18:44     ` Jiri Olsa
2024-01-28  7:51       ` Masami Hiramatsu
2024-01-29  9:54         ` Jiri Olsa

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