From: takahiro.akashi@linaro•org (AKASHI Takahiro)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v3 5/6] arm64: ftrace: Add system call tracepoint
Date: Wed, 19 Feb 2014 19:48:57 +0900 [thread overview]
Message-ID: <53048C19.6040509@linaro.org> (raw)
In-Reply-To: <20140217192936.GH26590@mudshark.cambridge.arm.com>
On 02/18/2014 04:29 AM, Will Deacon wrote:
> On Fri, Feb 07, 2014 at 10:18:55AM +0000, AKASHI Takahiro wrote:
>> This patch allows system call entry or exit to be traced as ftrace events,
>> ie. sys_enter_*/sys_exit_*, if CONFIG_FTRACE_SYSCALLS is enabled.
>> Those events appear and can be controlled under
>> ${sysfs}/tracing/events/syscalls/
>>
>> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro•org>
>> ---
>> arch/arm64/Kconfig | 1 +
>> arch/arm64/include/asm/syscall.h | 1 +
>> arch/arm64/include/asm/unistd.h | 2 ++
>> arch/arm64/kernel/ptrace.c | 5 +++++
>> 4 files changed, 9 insertions(+)
>>
>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>> index 43fce76..9bdaf5c 100644
>> --- a/arch/arm64/Kconfig
>> +++ b/arch/arm64/Kconfig
>> @@ -42,6 +42,7 @@ config ARM64
>> select HAVE_HW_BREAKPOINT if PERF_EVENTS
>> select HAVE_MEMBLOCK
>> select HAVE_PERF_EVENTS
>> + select HAVE_SYSCALL_TRACEPOINTS
>> select IRQ_DOMAIN
>> select MODULES_USE_ELF_RELA
>> select NO_BOOTMEM
>> diff --git a/arch/arm64/include/asm/syscall.h b/arch/arm64/include/asm/syscall.h
>> index 70ba9d4..383771e 100644
>> --- a/arch/arm64/include/asm/syscall.h
>> +++ b/arch/arm64/include/asm/syscall.h
>> @@ -18,6 +18,7 @@
>>
>> #include <linux/err.h>
>>
>> +extern const void *sys_call_table[];
>>
>> static inline int syscall_get_nr(struct task_struct *task,
>> struct pt_regs *regs)
>> diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h
>> index 82ce217..c335479 100644
>> --- a/arch/arm64/include/asm/unistd.h
>> +++ b/arch/arm64/include/asm/unistd.h
>> @@ -28,3 +28,5 @@
>> #endif
>> #define __ARCH_WANT_SYS_CLONE
>> #include <uapi/asm/unistd.h>
>> +
>> +#define NR_syscalls (__NR_syscalls)
>> diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
>> index 64ce39f..f4c3c4e 100644
>> --- a/arch/arm64/kernel/ptrace.c
>> +++ b/arch/arm64/kernel/ptrace.c
>> @@ -41,6 +41,9 @@
>> #include <asm/traps.h>
>> #include <asm/system_misc.h>
>>
>> +#define CREATE_TRACE_POINTS
>> +#include <trace/events/syscalls.h>
>> +
>> /*
>> * TODO: does not yet catch signals sent when the child dies.
>> * in exit.c or in signal.c.
>> @@ -1076,10 +1079,12 @@ asmlinkage int syscall_trace(int dir, struct pt_regs *regs)
>> }
>>
>> if (dir) {
>> + trace_sys_exit(regs, regs->syscallno);
>> tracehook_report_syscall_exit(regs, 0);
>> } else {
>> if (tracehook_report_syscall_entry(regs))
>> regs->syscallno = ~0UL;
>> + trace_sys_enter(regs, regs->syscallno);
>
> Shouldn't these calls be guarded by a TIF_SYSCALL_TRACEPOINT check?
Yes. I will add the guard.
-Takahiro AKASHI
> Will
>
next prev parent reply other threads:[~2014-02-19 10:48 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-24 7:08 [PATCH v2 0/6] arm64: Add ftrace support AKASHI Takahiro
2013-10-24 7:08 ` [PATCH v2 1/6] " AKASHI Takahiro
2013-10-24 7:08 ` [PATCH v2 2/6] arm64: ftrace: Add dynamic " AKASHI Takahiro
2013-10-24 7:08 ` [PATCH v2 3/6] arm64: ftrace: Add CALLER_ADDRx macros AKASHI Takahiro
2013-10-24 7:08 ` [PATCH v2 4/6] ftrace: Add arm64 support to recordmcount AKASHI Takahiro
2013-10-24 7:08 ` [PATCH v2 5/6] arm64: ftrace: Add system call tracepoint AKASHI Takahiro
2013-10-24 7:08 ` [PATCH v2 6/6] arm64: Add 'notrace' attribute to unwind_frame() for ftrace AKASHI Takahiro
2014-02-07 10:18 ` [PATCH v3 0/6] arm64: Add ftrace support AKASHI Takahiro
2014-02-07 10:18 ` [PATCH v3 1/6] " AKASHI Takahiro
2014-02-10 15:03 ` Arnd Bergmann
2014-02-10 15:19 ` Steven Rostedt
[not found] ` <CAB5YjtCr2KL_q1FF8kO_VKe+feg7f9qFRKtwf3xj2h0ENwuB5g@mail.gmail.com>
2014-02-12 11:03 ` Arnd Bergmann
2014-02-17 18:12 ` Will Deacon
2014-02-19 10:46 ` AKASHI Takahiro
2014-02-07 10:18 ` [PATCH v3 2/6] arm64: ftrace: Add dynamic " AKASHI Takahiro
2014-02-07 10:18 ` [PATCH v3 3/6] arm64: ftrace: Add CALLER_ADDRx macros AKASHI Takahiro
2014-02-07 10:18 ` [PATCH v3 4/6] ftrace: Add arm64 support to recordmcount AKASHI Takahiro
2014-02-07 10:18 ` [PATCH v3 5/6] arm64: ftrace: Add system call tracepoint AKASHI Takahiro
2014-02-17 19:29 ` Will Deacon
2014-02-19 10:48 ` AKASHI Takahiro [this message]
2014-02-07 10:18 ` [PATCH v3 6/6] arm64: Add 'notrace' attribute to unwind_frame() for ftrace AKASHI Takahiro
2014-02-10 14:21 ` [PATCH v3 0/6] arm64: Add ftrace support Kulkarni, Ganapatrao
2014-02-25 9:23 ` [PATCH v4 0/7] " AKASHI Takahiro
2014-02-25 9:23 ` [PATCH v4 1/7] " AKASHI Takahiro
2014-02-25 15:38 ` Kulkarni, Ganapatrao
2014-02-28 5:06 ` AKASHI Takahiro
2014-02-25 9:23 ` [PATCH v4 2/7] arm64: ftrace: Add dynamic " AKASHI Takahiro
2014-02-25 9:23 ` [PATCH v4 3/7] arm64: ftrace: Add CALLER_ADDRx macros AKASHI Takahiro
2014-02-25 9:23 ` [PATCH v4 4/7] ftrace: Add arm64 support to recordmcount AKASHI Takahiro
2014-02-25 9:23 ` [PATCH v4 5/7] arm64: ftrace: Add system call tracepoint AKASHI Takahiro
2014-02-25 9:23 ` [PATCH v4 6/7] arm64: Add 'notrace' attribute to unwind_frame() for ftrace AKASHI Takahiro
2014-02-25 9:23 ` [PATCH v4 7/7] arm64: add __ASSEMBLY__ in asm/insn.h AKASHI Takahiro
2014-02-28 5:18 ` [PATCH v5 0/7] arm64: Add ftrace support AKASHI Takahiro
2014-02-28 5:18 ` [PATCH v5 1/7] " AKASHI Takahiro
2014-02-28 5:18 ` [PATCH v5 2/7] arm64: ftrace: Add dynamic " AKASHI Takahiro
2014-02-28 5:18 ` [PATCH v5 3/7] arm64: ftrace: Add CALLER_ADDRx macros AKASHI Takahiro
2014-02-28 5:18 ` [PATCH v5 4/7] ftrace: Add arm64 support to recordmcount AKASHI Takahiro
2014-02-28 5:18 ` [PATCH v5 5/7] arm64: ftrace: Add system call tracepoint AKASHI Takahiro
2014-02-28 5:18 ` [PATCH v5 6/7] arm64: Add 'notrace' attribute to unwind_frame() for ftrace AKASHI Takahiro
2014-02-28 5:18 ` [PATCH v5 7/7] arm64: add __ASSEMBLY__ in asm/insn.h AKASHI Takahiro
2014-03-11 14:35 ` [PATCH v5 0/7] arm64: Add ftrace support Will Deacon
2014-03-12 1:47 ` AKASHI Takahiro
2014-03-12 1:58 ` Steven Rostedt
2014-03-12 2:02 ` Steven Rostedt
2014-03-13 10:13 ` [PATCH v6 " AKASHI Takahiro
2014-03-13 10:13 ` [PATCH v6 1/7] arm64: add __ASSEMBLY__ in asm/insn.h AKASHI Takahiro
2014-03-13 12:19 ` Will Deacon
2014-03-13 10:13 ` [PATCH v6 2/7] arm64: Add 'notrace' attribute to unwind_frame() for ftrace AKASHI Takahiro
2014-03-13 12:19 ` Will Deacon
2014-03-13 10:13 ` [PATCH v6 3/7] ftrace: Add arm64 support to recordmcount AKASHI Takahiro
2014-03-13 12:38 ` Will Deacon
2014-03-13 14:57 ` AKASHI Takahiro
2014-03-13 16:05 ` Will Deacon
2014-03-13 10:13 ` [PATCH v6 4/7] arm64: Add ftrace support AKASHI Takahiro
2014-03-13 17:08 ` Will Deacon
2014-03-13 18:27 ` Steven Rostedt
2014-03-13 18:37 ` Will Deacon
2014-03-13 18:49 ` Steven Rostedt
2014-03-14 4:45 ` AKASHI Takahiro
2014-03-14 10:07 ` Will Deacon
2014-03-14 16:13 ` AKASHI Takahiro
2014-03-13 10:13 ` [PATCH v6 5/7] arm64: ftrace: Add dynamic " AKASHI Takahiro
2014-03-13 18:10 ` Will Deacon
2014-03-13 18:33 ` Steven Rostedt
2014-03-14 5:28 ` AKASHI Takahiro
2014-03-14 5:26 ` AKASHI Takahiro
2014-03-13 10:13 ` [PATCH v6 6/7] arm64: ftrace: Add CALLER_ADDRx macros AKASHI Takahiro
2014-03-13 15:54 ` Will Deacon
2014-03-13 18:07 ` Steven Rostedt
2014-03-14 4:55 ` AKASHI Takahiro
2014-03-14 3:00 ` AKASHI Takahiro
2014-03-14 10:09 ` Will Deacon
2014-03-14 16:15 ` AKASHI Takahiro
2014-03-13 10:13 ` [PATCH v6 7/7] arm64: ftrace: Add system call tracepoint AKASHI Takahiro
2014-03-13 16:25 ` Will Deacon
2014-03-14 3:50 ` AKASHI Takahiro
2014-03-15 5:40 ` [PATCH v7 0/7] arm64: Add ftrace support AKASHI Takahiro
2014-03-15 5:40 ` [PATCH v7 1/7] arm64: add __ASSEMBLY__ in asm/insn.h AKASHI Takahiro
2014-03-15 5:40 ` [PATCH v7 2/7] arm64: Add 'notrace' attribute to unwind_frame() for ftrace AKASHI Takahiro
2014-03-15 5:40 ` [PATCH v7 3/7] ftrace: Add arm64 support to recordmcount AKASHI Takahiro
2014-04-16 13:31 ` Will Deacon
2014-04-30 9:54 ` [PATCH v8 0/8] arm64: Add ftrace support AKASHI Takahiro
2014-04-30 9:54 ` [PATCH v8 1/8] ftrace: make CALLER_ADDRx macros more generic AKASHI Takahiro
2014-05-02 18:13 ` Will Deacon
2014-05-02 19:02 ` Steven Rostedt
2014-05-02 19:03 ` Steven Rostedt
2014-05-02 19:19 ` Steven Rostedt
2014-05-12 15:58 ` Will Deacon
2014-05-12 16:05 ` Steven Rostedt
2014-05-12 16:12 ` Will Deacon
2014-05-12 17:23 ` Steven Rostedt
2014-05-20 11:29 ` AKASHI Takahiro
2014-05-20 11:31 ` [PATCH v8_1] " AKASHI Takahiro
2014-06-11 12:34 ` [PATCH v8 1/8] " Geert Uytterhoeven
2014-06-11 13:23 ` [PATCH] arm/ftrace: Fix function_return_addr() to function_return_address() Steven Rostedt
2014-06-11 13:38 ` Geert Uytterhoeven
2014-06-11 13:44 ` Steven Rostedt
2014-04-30 9:54 ` [PATCH v8 2/8] arm64: add __ASSEMBLY__ in asm/insn.h AKASHI Takahiro
2014-04-30 9:54 ` [PATCH v8 3/8] arm64: Add 'notrace' attribute to unwind_frame() for ftrace AKASHI Takahiro
2014-04-30 9:54 ` [PATCH v8 4/8] ftrace: Add arm64 support to recordmcount AKASHI Takahiro
2014-04-30 9:54 ` [PATCH v8 5/8] arm64: Add ftrace support AKASHI Takahiro
2014-05-28 20:19 ` Mark Brown
2014-05-29 8:07 ` Will Deacon
2014-05-29 9:47 ` Mark Brown
2014-04-30 9:54 ` [PATCH v8 6/8] arm64: ftrace: Add dynamic " AKASHI Takahiro
2014-04-30 9:54 ` [PATCH v8 7/8] arm64: ftrace: Add CALLER_ADDRx macros AKASHI Takahiro
2014-04-30 9:54 ` [PATCH v8 8/8] arm64: ftrace: Add system call tracepoint AKASHI Takahiro
2014-03-15 5:45 ` [PATCH v7 4/7] arm64: Add ftrace support AKASHI Takahiro
2014-04-16 13:45 ` Will Deacon
2014-03-15 5:45 ` [PATCH v7 5/7] arm64: ftrace: Add dynamic " AKASHI Takahiro
2014-04-16 13:48 ` Will Deacon
2014-03-15 5:45 ` [PATCH v7 6/7] arm64: ftrace: Add CALLER_ADDRx macros AKASHI Takahiro
2014-04-16 13:52 ` Will Deacon
2014-04-28 10:41 ` AKASHI Takahiro
2014-05-27 13:10 ` [for-next][PATCH] ftrace: Make CALLER_ADDRx macros more generic Steven Rostedt
2014-05-27 18:49 ` Will Deacon
2014-05-29 5:27 ` AKASHI Takahiro
2014-05-29 8:10 ` Will Deacon
2014-03-15 5:45 ` [PATCH v7 7/7] arm64: ftrace: Add system call tracepoint AKASHI Takahiro
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