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 04/36] x86: tracing: Add ftrace_regs definition in the header
Date: Fri, 12 Jan 2024 19:11:38 +0900 [thread overview]
Message-ID: <170505429822.459169.14866081576830532227.stgit@devnote2> (raw)
In-Reply-To: <170505424954.459169.10630626365737237288.stgit@devnote2>
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Add ftrace_regs definition for x86_64 in the ftrace header to
clarify what register will be accessible from ftrace_regs.
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
---
Changes in v3:
- Add rip to be saved.
Changes in v2:
- Newly added.
---
arch/x86/include/asm/ftrace.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/x86/include/asm/ftrace.h b/arch/x86/include/asm/ftrace.h
index cf88cc8cc74d..c88bf47f46da 100644
--- a/arch/x86/include/asm/ftrace.h
+++ b/arch/x86/include/asm/ftrace.h
@@ -36,6 +36,12 @@ static inline unsigned long ftrace_call_adjust(unsigned long addr)
#ifdef CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS
struct ftrace_regs {
+ /*
+ * On the x86_64, the ftrace_regs saves;
+ * rax, rcx, rdx, rdi, rsi, r8, r9, rbp, rip and rsp.
+ * Also orig_ax is used for passing direct trampoline address.
+ * x86_32 doesn't support ftrace_regs.
+ */
struct pt_regs regs;
};
next prev parent reply other threads:[~2024-01-12 10:11 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 ` Masami Hiramatsu (Google) [this message]
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 ` [PATCH v6 12/36] ftrace: Allow ftrace startup flags exist without dynamic ftrace Masami Hiramatsu (Google)
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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