From: peterz at infradead.org (Peter Zijlstra)
Subject: [PATCH 3/4] x86/ftrace: Add pt_regs frame annotations
Date: Wed, 08 May 2019 09:49:04 +0200 [thread overview]
Message-ID: <20190508080612.776845854@infradead.org> (raw)
In-Reply-To: 20190508074901.982470324@infradead.org
When CONFIG_FRAME_POINTER, we should mark pt_regs frames.
Signed-off-by: Peter Zijlstra (Intel) <peterz at infradead.org>
---
arch/x86/kernel/ftrace_32.S | 6 ++++++
arch/x86/kernel/ftrace_64.S | 3 +++
2 files changed, 9 insertions(+)
--- a/arch/x86/kernel/ftrace_32.S
+++ b/arch/x86/kernel/ftrace_32.S
@@ -138,6 +138,12 @@ ENTRY(ftrace_regs_caller)
#else
movl 0x4(%ebp), %edx /* Load parent ip (2nd parameter) */
#endif
+
+#ifdef CONFIG_FRAME_POINTER
+ movl %esp, %ebp
+ andl $0x7fffffff, %ebp
+#endif
+
movl function_trace_op, %ecx /* Save ftrace_pos in 3rd parameter */
pushl %esp /* Save pt_regs as 4th parameter */
--- a/arch/x86/kernel/ftrace_64.S
+++ b/arch/x86/kernel/ftrace_64.S
@@ -222,6 +222,9 @@ GLOBAL(ftrace_regs_caller_op_ptr)
leaq MCOUNT_REG_SIZE+8*2(%rsp), %rcx
movq %rcx, RSP(%rsp)
+#ifdef CONFIG_FRAME_POINTER
+ leaq 1(%rsp), %rbp
+#endif
/* regs go into 4th parameter */
leaq (%rsp), %rcx
WARNING: multiple messages have this Message-ID (diff)
From: peterz@infradead.org (Peter Zijlstra)
Subject: [PATCH 3/4] x86/ftrace: Add pt_regs frame annotations
Date: Wed, 08 May 2019 09:49:04 +0200 [thread overview]
Message-ID: <20190508080612.776845854@infradead.org> (raw)
Message-ID: <20190508074904.zJ8leEz8ZDitjojpbQZXrChn_xCFlbU1hVDR9DtGRAQ@z> (raw)
In-Reply-To: 20190508074901.982470324@infradead.org
When CONFIG_FRAME_POINTER, we should mark pt_regs frames.
Signed-off-by: Peter Zijlstra (Intel) <peterz at infradead.org>
---
arch/x86/kernel/ftrace_32.S | 6 ++++++
arch/x86/kernel/ftrace_64.S | 3 +++
2 files changed, 9 insertions(+)
--- a/arch/x86/kernel/ftrace_32.S
+++ b/arch/x86/kernel/ftrace_32.S
@@ -138,6 +138,12 @@ ENTRY(ftrace_regs_caller)
#else
movl 0x4(%ebp), %edx /* Load parent ip (2nd parameter) */
#endif
+
+#ifdef CONFIG_FRAME_POINTER
+ movl %esp, %ebp
+ andl $0x7fffffff, %ebp
+#endif
+
movl function_trace_op, %ecx /* Save ftrace_pos in 3rd parameter */
pushl %esp /* Save pt_regs as 4th parameter */
--- a/arch/x86/kernel/ftrace_64.S
+++ b/arch/x86/kernel/ftrace_64.S
@@ -222,6 +222,9 @@ GLOBAL(ftrace_regs_caller_op_ptr)
leaq MCOUNT_REG_SIZE+8*2(%rsp), %rcx
movq %rcx, RSP(%rsp)
+#ifdef CONFIG_FRAME_POINTER
+ leaq 1(%rsp), %rbp
+#endif
/* regs go into 4th parameter */
leaq (%rsp), %rcx
next prev parent reply other threads:[~2019-05-08 7:49 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-08 7:49 [PATCH 0/4] x86: int3 fallout peterz
2019-05-08 7:49 ` Peter Zijlstra
2019-05-08 7:49 ` [PATCH 1/4] x86/entry/32: Clean up return from interrupt preemption path peterz
2019-05-08 7:49 ` Peter Zijlstra
2019-05-08 7:49 ` [PATCH 2/4] x86/kprobes: Fix frame pointer annotations peterz
2019-05-08 7:49 ` Peter Zijlstra
2019-05-08 11:54 ` jpoimboe
2019-05-08 11:54 ` Josh Poimboeuf
2019-05-08 12:04 ` peterz
2019-05-08 12:04 ` Peter Zijlstra
[not found] ` <20190508124248.u5ukpbhnh4wpiccq@treble>
[not found] ` <20190508153907.GM2589@hirez.programming.kicks-ass.net>
2019-05-08 18:48 ` jpoimboe
2019-05-08 18:48 ` Josh Poimboeuf
2019-05-09 1:20 ` mhiramat
2019-05-09 1:20 ` Masami Hiramatsu
2019-05-09 8:14 ` peterz
2019-05-09 8:14 ` Peter Zijlstra
2019-05-09 9:27 ` peterz
2019-05-09 9:27 ` Peter Zijlstra
2019-05-09 14:00 ` jpoimboe
2019-05-09 14:00 ` Josh Poimboeuf
2019-05-09 14:01 ` mhiramat
2019-05-09 14:01 ` Masami Hiramatsu
2019-05-09 17:14 ` peterz
2019-05-09 17:14 ` Peter Zijlstra
2019-05-10 4:58 ` mhiramat
2019-05-10 4:58 ` Masami Hiramatsu
2019-05-10 12:31 ` peterz
2019-05-10 12:31 ` Peter Zijlstra
2019-05-11 0:52 ` mhiramat
2019-05-11 0:52 ` Masami Hiramatsu
2019-05-10 12:40 ` peterz
2019-05-10 12:40 ` Peter Zijlstra
2019-05-11 0:56 ` mhiramat
2019-05-11 0:56 ` Masami Hiramatsu
2019-05-13 8:15 ` peterz
2019-05-13 8:15 ` Peter Zijlstra
2019-05-09 16:20 ` luto
2019-05-09 16:20 ` Andy Lutomirski
2019-05-09 17:18 ` peterz
2019-05-09 17:18 ` Peter Zijlstra
2019-05-09 17:43 ` rostedt
2019-05-09 17:43 ` Steven Rostedt
2019-05-10 3:21 ` mhiramat
2019-05-10 3:21 ` Masami Hiramatsu
2019-05-10 12:14 ` peterz
2019-05-10 12:14 ` Peter Zijlstra
2019-05-10 12:17 ` peterz
2019-05-10 12:17 ` Peter Zijlstra
2019-05-10 14:54 ` rostedt
2019-05-10 14:54 ` Steven Rostedt
2019-05-09 17:37 ` rostedt
2019-05-09 17:37 ` Steven Rostedt
2019-05-09 18:26 ` peterz
2019-05-09 18:26 ` Peter Zijlstra
2019-05-09 18:36 ` rostedt
2019-05-09 18:36 ` Steven Rostedt
2019-05-08 7:49 ` peterz [this message]
2019-05-08 7:49 ` [PATCH 3/4] x86/ftrace: Add pt_regs frame annotations Peter Zijlstra
2019-05-08 7:49 ` [RFC][PATCH 4/4] x86_32: Provide consistent pt_regs peterz
2019-05-08 7:49 ` Peter Zijlstra
2019-05-08 11:57 ` jpoimboe
2019-05-08 11:57 ` Josh Poimboeuf
2019-05-08 20:58 ` torvalds
2019-05-08 20:58 ` Linus Torvalds
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