From: Gal Pressman <gal.pressman@linux.dev>
To: Leon Romanovsky <leon@kernel.org>, Michael Margolin <mrgolin@amazon.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>, Tom Sela <tomsela@amazon.com>,
linux-rdma@vger.kernel.org, sleybo@amazon.com, matua@amazon.com,
Yonatan Nachum <ynachum@amazon.com>
Subject: Re: [PATCH for-next] RDMA/efa: Add AH usage counter with sysfs exposure
Date: Sun, 15 Feb 2026 19:23:41 +0200 [thread overview]
Message-ID: <42c8552c-eb41-43f5-bea5-fdd46edba65a@linux.dev> (raw)
In-Reply-To: <20260215171543.GB12989@unreal>
On 15/02/2026 19:15, Leon Romanovsky wrote:
>> Stats also doesn't seem as the right place
>> for this.
Because?
>
> How can the kernel and this new counter report a different number of AH
> objects?
>
>>
>> In a followup series we will suggest netlink counters extension to
>> support driver specific resources.
>
> bpftrace is generally the right tool, unless you can detail why it does not
> fit your specific debugging scenario.
I don't understand, how do you use bpftrace for this use case?
Once you get to debug a system in a certain state, bpftrace won't help
you see events that happened in the past. You won't be able to know how
many AH were created.
next prev parent reply other threads:[~2026-02-15 17:24 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-11 13:10 [PATCH for-next] RDMA/efa: Add AH usage counter with sysfs exposure Tom Sela
2026-02-11 13:13 ` Jason Gunthorpe
2026-02-12 6:52 ` Gal Pressman
2026-02-12 16:36 ` Leon Romanovsky
2026-02-15 13:41 ` Michael Margolin
2026-02-15 17:15 ` Leon Romanovsky
2026-02-15 17:23 ` Gal Pressman [this message]
2026-02-15 17:57 ` Leon Romanovsky
2026-02-16 11:08 ` Michael Margolin
2026-02-16 11:22 ` Leon Romanovsky
2026-02-17 14:54 ` Michael Margolin
2026-02-18 0:14 ` Jason Gunthorpe
2026-02-18 9:15 ` Leon Romanovsky
2026-02-18 17:27 ` Michael Margolin
2026-02-16 8:48 ` Michael Margolin
2026-02-16 9:41 ` Leon Romanovsky
2026-02-11 18:48 ` yanjun.zhu
2026-02-12 6:52 ` Gal Pressman
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