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Tue, 19 Aug 2025 06:48:25 -0700 (PDT) Received: from xiao.mioffice.cn ([43.224.245.230]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b472d5ad0f7sm10719364a12.2.2025.08.19.06.48.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Aug 2025 06:48:24 -0700 (PDT) From: Xiang Gao To: akpm@linux-foundation.org, david@redhat.com Cc: lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, gaoxiang17 Subject: [PATCH] mm/cma: add 'available count' and 'total count' to trace_cma_alloc_start Date: Tue, 19 Aug 2025 21:48:17 +0800 Message-Id: <20250819134817.247495-1-gxxa03070307@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: gaoxiang17 This makes cma info more intuitive during debugging. Signed-off-by: gaoxiang17 Acked-by: David Hildenbrand --- include/trace/events/cma.h | 17 ++++++++++++----- mm/cma.c | 2 +- 2 files changed, 13 insertions(+), 6 deletions(-) diff --git a/include/trace/events/cma.h b/include/trace/events/cma.h index 383c09f583ac..fbe70008ffc7 100644 --- a/include/trace/events/cma.h +++ b/include/trace/events/cma.h @@ -38,25 +38,32 @@ TRACE_EVENT(cma_release, =20 TRACE_EVENT(cma_alloc_start, =20 - TP_PROTO(const char *name, unsigned long count, unsigned int align), + TP_PROTO(const char *name, unsigned long request_count, unsigned long ava= ilable_count, + unsigned long total_count, unsigned int align), =20 - TP_ARGS(name, count, align), + TP_ARGS(name, request_count, available_count, total_count, align), =20 TP_STRUCT__entry( __string(name, name) - __field(unsigned long, count) + __field(unsigned long, request_count) + __field(unsigned long, available_count) + __field(unsigned long, total_count) __field(unsigned int, align) ), =20 TP_fast_assign( __assign_str(name); - __entry->count =3D count; + __entry->count =3D request_count; + __entry->available_count =3D available_count; + __entry->total_count =3D total_count; __entry->align =3D align; ), =20 TP_printk("name=3D%s count=3D%lu align=3D%u", __get_str(name), - __entry->count, + __entry->request_count, + __entry->available_count, + __entry->total_count, __entry->align) ); =20 diff --git a/mm/cma.c b/mm/cma.c index 2ffa4befb99a..e56ec64d0567 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -864,7 +864,7 @@ static struct page *__cma_alloc(struct cma *cma, unsign= ed long count, if (!count) return page; =20 - trace_cma_alloc_start(name, count, align); + trace_cma_alloc_start(name, count, cma->available_count, cma->count, alig= n); =20 for (r =3D 0; r < cma->nranges; r++) { page =3D NULL; --=20 2.34.1