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Thu, 25 Jan 2024 08:43:21 -0800 (PST) From: Alexandru Elisei To: catalin.marinas@arm.com, will@kernel.org, oliver.upton@linux.dev, maz@kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, arnd@arndb.de, akpm@linux-foundation.org, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, mhiramat@kernel.org, rppt@kernel.org, hughd@google.com Cc: pcc@google.com, steven.price@arm.com, anshuman.khandual@arm.com, vincenzo.frascino@arm.com, david@redhat.com, eugenis@google.com, kcc@google.com, hyesoo.yu@samsung.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org Subject: [PATCH RFC v3 07/35] mm: cma: Add CMA_RELEASE_{SUCCESS,FAIL} events Date: Thu, 25 Jan 2024 16:42:28 +0000 Message-Id: <20240125164256.4147-8-alexandru.elisei@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240125164256.4147-1-alexandru.elisei@arm.com> References: <20240125164256.4147-1-alexandru.elisei@arm.com> MIME-Version: 1.0 X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 2E3E9A0016 X-Stat-Signature: igitd7zx5gm81taeek3tud5se1gndj6f X-HE-Tag: 1706201007-217305 X-HE-Meta: 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 IDvdzoLQ XAs+FBkaFa28xSOQ1mh+dIOELXiU+7N5S7vvYmir9eNGfWYThn74VbaCp1ngTXpFn++SbB7Z3x0Im2ad6JrMMwBx0TF2e0Dtnzv5mKfDJom90TCI/kl3gQ5Q9bZImWG+yxDjwhqaUY1U461ihdG+rsvVy4WmzKVIFUcP/R+gvlJ/NOykXGqKbT1BC/2UPjDqv3e/V7lVastk+dVg= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Similar to the two events that relate to CMA allocations, add the CMA_RELEASE_SUCCESS and CMA_RELEASE_FAIL events that count when CMA pages are freed. Signed-off-by: Alexandru Elisei --- Changes since rfc v2: * New patch. include/linux/vm_event_item.h | 2 ++ mm/cma.c | 6 +++++- mm/vmstat.c | 2 ++ 3 files changed, 9 insertions(+), 1 deletion(-) diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index 747943bc8cc2..aba5c5bf8127 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -83,6 +83,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, #ifdef CONFIG_CMA CMA_ALLOC_SUCCESS, CMA_ALLOC_FAIL, + CMA_RELEASE_SUCCESS, + CMA_RELEASE_FAIL, #endif UNEVICTABLE_PGCULLED, /* culled to noreclaim list */ UNEVICTABLE_PGSCANNED, /* scanned for reclaimability */ diff --git a/mm/cma.c b/mm/cma.c index dbf7fe8cb1bd..543bb6b3be8e 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -562,8 +562,10 @@ bool cma_release(struct cma *cma, const struct page *pages, { unsigned long pfn; - if (!cma_pages_valid(cma, pages, count)) + if (!cma_pages_valid(cma, pages, count)) { + count_vm_events(CMA_RELEASE_FAIL, count); return false; + } pr_debug("%s(page %p, count %lu)\n", __func__, (void *)pages, count); @@ -575,6 +577,8 @@ bool cma_release(struct cma *cma, const struct page *pages, cma_clear_bitmap(cma, pfn, count); trace_cma_release(cma->name, pfn, pages, count); + count_vm_events(CMA_RELEASE_SUCCESS, count); + return true; } diff --git a/mm/vmstat.c b/mm/vmstat.c index db79935e4a54..eebfd5c6c723 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1340,6 +1340,8 @@ const char * const vmstat_text[] = { #ifdef CONFIG_CMA "cma_alloc_success", "cma_alloc_fail", + "cma_release_success", + "cma_release_fail", #endif "unevictable_pgs_culled", "unevictable_pgs_scanned",