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Date:   Fri, 13 Jan 2023 09:33:41 +0530
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Subject: Re: [PATCH] uprobes: list all active uprobes in the system
To:     luolongjun@huawei.com, peterz@infradead.org, mingo@redhat.com,
        acme@kernel.org, mark.rutland@arm.com,
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        Ravi Bangoria <ravi.bangoria@amd.com>, rostedt@goodmis.org,
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References: <20230111104825.1945418-1-luolongjun@huawei.com>
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From:   Ravi Bangoria <ravi.bangoria@amd.com>
In-Reply-To: <20230111104825.1945418-1-luolongjun@huawei.com>
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+cc: Steven, Oleg, Masami

On 11-Jan-23 4:18 PM, luolongjun@huawei.com wrote:
> From: Longjun Luo <luolongjun@huawei.com>
> 
> Since uprobes will replace instructions in the process
> memory, it is necessary to provide one way to list
> all active uprobes. One can access this file through
> /sys/kernel/debug/uprobes/list.
> 
> Output looks like this
> =====================
> inode+offset/ref_ctr_offset    4160760670+0x30a10/0x0
>     ref                        1
>     register_rwsem             (unlocked)
>     consumer_rwsem             (unlocked)
>     consumers-1
>         handler                0xffffffffc03ee02e(handler) uprobe
>         ret_handler            0x0000000000000000( )
>         filter                 0xffffffffc03ee010(filter) uprobe
>     consumers-2
>         handler                0xffffffffc03e902e(handler_1) uprobe_1
>         ret_handler            0x0000000000000000( )
>         filter                 0xffffffffc03e9010(filter_1) uprobe_1

You can list uprobes via /sys/kernel/tracing/uprobe_events. Any specific reason
to introduce another way?

Thanks,
Ravi