* [PATCH] SAMPLES: kprobe_example: Make it print something on ARM.
@ 2015-02-04 2:56 Wang Long
2015-02-04 3:17 ` Masami Hiramatsu
0 siblings, 1 reply; 3+ messages in thread
From: Wang Long @ 2015-02-04 2:56 UTC (permalink / raw)
To: masami.hiramatsu.pt, davem, anil.s.keshavamurthy, ananth
Cc: linux-kernel, peifeiyue, long.wanglong, linux-arm-kernel
This KProbes example is a little useless if it doesn't print anything.
For ARM print similar messages to those produced on x86 and PPC.
Signed-off-by: Wang Long <long.wanglong@huawei.com>
---
samples/kprobes/kprobe_example.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/samples/kprobes/kprobe_example.c b/samples/kprobes/kprobe_example.c
index 366db1a..eba9f1a 100644
--- a/samples/kprobes/kprobe_example.c
+++ b/samples/kprobes/kprobe_example.c
@@ -42,6 +42,11 @@ static int handler_pre(struct kprobe *p, struct pt_regs *regs)
" ex1 = 0x%lx\n",
p->addr, regs->pc, regs->ex1);
#endif
+#ifdef CONFIG_ARM
+ printk(KERN_INFO "pre_handler: p->addr = 0x%p, ARM_pc = 0x%lx,"
+ " ARM_cpsr = 0x%lx\n",
+ p->addr, regs->ARM_pc, regs->ARM_cpsr);
+#endif
/* A dump_stack() here will give a stack backtrace */
return 0;
@@ -67,6 +72,10 @@ static void handler_post(struct kprobe *p, struct pt_regs *regs,
printk(KERN_INFO "post_handler: p->addr = 0x%p, ex1 = 0x%lx\n",
p->addr, regs->ex1);
#endif
+#ifdef CONFIG_ARM
+ printk(KERN_INFO "post_handler: p->addr = 0x%p, ARM_cpsr = 0x%lx\n",
+ p->addr, regs->ARM_cpsr);
+#endif
}
/*
--
1.8.3.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] SAMPLES: kprobe_example: Make it print something on ARM.
2015-02-04 2:56 [PATCH] SAMPLES: kprobe_example: Make it print something on ARM Wang Long
@ 2015-02-04 3:17 ` Masami Hiramatsu
2015-02-05 1:09 ` long.wanglong
0 siblings, 1 reply; 3+ messages in thread
From: Masami Hiramatsu @ 2015-02-04 3:17 UTC (permalink / raw)
To: Wang Long
Cc: davem, anil.s.keshavamurthy, ananth, linux-kernel, peifeiyue,
linux-arm-kernel
(2015/02/04 11:56), Wang Long wrote:
> This KProbes example is a little useless if it doesn't print anything.
> For ARM print similar messages to those produced on x86 and PPC.
BTW, I guess similar update required for s390, doesn't it?
>
> Signed-off-by: Wang Long <long.wanglong@huawei.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Thank you!
> ---
> samples/kprobes/kprobe_example.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/samples/kprobes/kprobe_example.c b/samples/kprobes/kprobe_example.c
> index 366db1a..eba9f1a 100644
> --- a/samples/kprobes/kprobe_example.c
> +++ b/samples/kprobes/kprobe_example.c
> @@ -42,6 +42,11 @@ static int handler_pre(struct kprobe *p, struct pt_regs *regs)
> " ex1 = 0x%lx\n",
> p->addr, regs->pc, regs->ex1);
> #endif
> +#ifdef CONFIG_ARM
> + printk(KERN_INFO "pre_handler: p->addr = 0x%p, ARM_pc = 0x%lx,"
> + " ARM_cpsr = 0x%lx\n",
> + p->addr, regs->ARM_pc, regs->ARM_cpsr);
> +#endif
>
> /* A dump_stack() here will give a stack backtrace */
> return 0;
> @@ -67,6 +72,10 @@ static void handler_post(struct kprobe *p, struct pt_regs *regs,
> printk(KERN_INFO "post_handler: p->addr = 0x%p, ex1 = 0x%lx\n",
> p->addr, regs->ex1);
> #endif
> +#ifdef CONFIG_ARM
> + printk(KERN_INFO "post_handler: p->addr = 0x%p, ARM_cpsr = 0x%lx\n",
> + p->addr, regs->ARM_cpsr);
> +#endif
> }
>
> /*
>
--
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Research Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] SAMPLES: kprobe_example: Make it print something on ARM.
2015-02-04 3:17 ` Masami Hiramatsu
@ 2015-02-05 1:09 ` long.wanglong
0 siblings, 0 replies; 3+ messages in thread
From: long.wanglong @ 2015-02-05 1:09 UTC (permalink / raw)
To: Masami Hiramatsu
Cc: peifeiyue, linux-kernel, anil.s.keshavamurthy, davem,
linux-arm-kernel, ananth
On 2015/2/4 11:17, Masami Hiramatsu wrote:
> (2015/02/04 11:56), Wang Long wrote:
>> This KProbes example is a little useless if it doesn't print anything.
>> For ARM print similar messages to those produced on x86 and PPC.
>
> BTW, I guess similar update required for s390, doesn't it?
>
yes, because i am not familiar with s390, someone else may update this example for s390.
Best Regards
Wang Long
>>
>> Signed-off-by: Wang Long <long.wanglong@huawei.com>
>
> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
>
> Thank you!
>
>> ---
>> samples/kprobes/kprobe_example.c | 9 +++++++++
>> 1 file changed, 9 insertions(+)
>>
>> diff --git a/samples/kprobes/kprobe_example.c b/samples/kprobes/kprobe_example.c
>> index 366db1a..eba9f1a 100644
>> --- a/samples/kprobes/kprobe_example.c
>> +++ b/samples/kprobes/kprobe_example.c
>> @@ -42,6 +42,11 @@ static int handler_pre(struct kprobe *p, struct pt_regs *regs)
>> " ex1 = 0x%lx\n",
>> p->addr, regs->pc, regs->ex1);
>> #endif
>> +#ifdef CONFIG_ARM
>> + printk(KERN_INFO "pre_handler: p->addr = 0x%p, ARM_pc = 0x%lx,"
>> + " ARM_cpsr = 0x%lx\n",
>> + p->addr, regs->ARM_pc, regs->ARM_cpsr);
>> +#endif
>>
>> /* A dump_stack() here will give a stack backtrace */
>> return 0;
>> @@ -67,6 +72,10 @@ static void handler_post(struct kprobe *p, struct pt_regs *regs,
>> printk(KERN_INFO "post_handler: p->addr = 0x%p, ex1 = 0x%lx\n",
>> p->addr, regs->ex1);
>> #endif
>> +#ifdef CONFIG_ARM
>> + printk(KERN_INFO "post_handler: p->addr = 0x%p, ARM_cpsr = 0x%lx\n",
>> + p->addr, regs->ARM_cpsr);
>> +#endif
>> }
>>
>> /*
>>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2015-02-04 2:56 [PATCH] SAMPLES: kprobe_example: Make it print something on ARM Wang Long
2015-02-04 3:17 ` Masami Hiramatsu
2015-02-05 1:09 ` long.wanglong
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