linux-kernel - Re: [PATCH] mm/cma: print total and used pages in cma

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Message-ID: <b95b62e2-3e71-4029-9f15-2ce780b1b91d@redhat.com>
Date: Sat, 16 Aug 2025 08:57:49 +0200
From: David Hildenbrand <david@...hat.com>
To: Giorgi Tchankvetadze <giorgitchankvetadze1997@...il.com>,
 Xiang Gao <gxxa03070307@...il.com>, akpm@...ux-foundation.org
Cc: lorenzo.stoakes@...cle.com, Liam.Howlett@...cle.com, vbabka@...e.cz,
 rppt@...nel.org, surenb@...gle.com, mhocko@...e.com, linux-mm@...ck.org,
 linux-kernel@...r.kernel.org, gaoxiang17 <gaoxiang17@...omi.com>
Subject: Re: [PATCH] mm/cma: print total and used pages in cma_alloc()

On 16.08.25 08:42, Giorgi Tchankvetadze wrote:
> What about using tracepoints?
> Add a trace_cma_alloc() event that only runs when tracing is enabled. No
> lock unless someone is actively monitoring

Tracing in general sounds like a much better approach here than the two 
pr_debug() in this function.

-- 
Cheers

David / dhildenb