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Mon, 23 Mar 2020 17:05:08 +0900 (KST) Received: from jaewon-linux.10.32.193.11 (unknown [10.253.104.82]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20200323080508epsmtip1996987f173182e8893721e72705829c8~_4EWBdNZ70114401144epsmtip1O; Mon, 23 Mar 2020 08:05:08 +0000 (GMT) From: Jaewon Kim To: gregkh@linuxfoundation.org, leon@kernel.org, vbabka@suse.cz, adobriyan@gmail.com, akpm@linux-foundation.org, labbott@redhat.com, sumit.semwal@linaro.org, minchan@kernel.org, ngupta@vflare.org, sergey.senozhatsky.work@gmail.com, kasong@redhat.com, bhe@redhat.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, jaewon31.kim@gmail.com, linux-api@vger.kernel.org, kexec@lists.infradead.org, Jaewon Kim Subject: [RFC PATCH v2 3/3] android: ion: include system heap size in meminfo extra Date: Mon, 23 Mar 2020 17:05:03 +0900 Message-Id: <20200323080503.6224-4-jaewon31.kim@samsung.com> X-Mailer: git-send-email 2.13.7 In-Reply-To: <20200323080503.6224-1-jaewon31.kim@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrCJsWRmVeSWpSXmKPExsWy7bCmru6W3Io4g/sz1C2mN3pZzFm/hs3i /INfbBbNi9ezWXRvnslo0fv+FZPF8nenGS12n/7KZLFyzw8miym/ljJbbP7ewWZxedccNot7 a/6zWiz7+p7dYkPLLHaLRxMmMVmcuvuZ3WJ2Yx+jg5DHzll32T02repk89j0aRK7x51re9g8 Tsz4zeKxf+4ado/NS+o93u+7yubRt2UVo8eZBUfYPXZ+2szq8XmTXABPVI5NRmpiSmqRQmpe cn5KZl66rZJ3cLxzvKmZgaGuoaWFuZJCXmJuqq2Si0+ArltmDtB7SgpliTmlQKGAxOJiJX07 m6L80pJUhYz84hJbpdSClJwCQ4MCveLE3OLSvHS95PxcK0MDAyNToMqEnIwrT6czFlwQrZh8 /S5rA+NCoS5GTg4JAROJT1emMYPYQgI7GCVuLiroYuQCsj8xSmzf+oUJwvnGKPF4ykVWmI6P 1zZAJfYySrzaeJ4dov07o8T+9lIQm01AW+L9gkmsIEUiAv1MEovuLmIBcZgF1jJKrOq6ywRS JSwQKnFp5iUWEJtFQFVi8oaZYDavgI3EisuTgWwOoHXyEgv/g93HKWArse/SLTaQORICi9gl LmyYxQZxkovE8afzGSFsYYlXx7ewQ9hSEi/729ghGpoZJd7O3MwI4bQwStzd1AvVYSzR23OB GWQbs4CmxPpd+hBhRYmdv+eClTAL8Em8+9rDCnEQr0RHGzTw1CRann2FBouMxN9/z6BsD4kF 89+xQoJoAqPEoZsvWScwys1C2LCAkXEVo1hqQXFuemqxYYEJcpxtYgSnYC2LHYx7zvkcYhTg YFTi4b3RWx4nxJpYVlyZe4hRgoNZSYR3c2pFnBBvSmJlVWpRfnxRaU5q8SFGU2BQTmSWEk3O B+aHvJJ4Q1MjY2NjCxMzczNTYyVx3qnXc+KEBNITS1KzU1MLUotg+pg4OKUaGMWv2NjONrv7 o9X3Mkcn5zvFf5tS/Ha1t+v8c5Y771wTPqVj0vuaN2tzmk65pD1+YWG65KLGrn1xMtz8eQxr zivsZl9qXzT9xhy7ywIsEn33X0euFkvaFjS7SDh4xd7nogGR7eWnFJ/whrueWV14WC1X/1XD 7avnLJ4ERidLngy4abm401ZvpxJLcUaioRZzUXEiAPhoS1HXAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrNLMWRmVeSWpSXmKPExsWy7bCSnO6W3Io4g1m7OC2mN3pZzFm/hs3i /INfbBbNi9ezWXRvnslo0fv+FZPF8nenGS12n/7KZLFyzw8miym/ljJbbP7ewWZxedccNot7 a/6zWiz7+p7dYkPLLHaLRxMmMVmcuvuZ3WJ2Yx+jg5DHzll32T02repk89j0aRK7x51re9g8 Tsz4zeKxf+4ado/NS+o93u+7yubRt2UVo8eZBUfYPXZ+2szq8XmTXABPFJdNSmpOZllqkb5d AlfGlafTGQsuiFZMvn6XtYFxoVAXIyeHhICJxMdrG5i6GLk4hAR2M0r0LexghkjISLw5/5Sl i5EDyBaWOHy4GKLmK6PEul0/WUFq2AS0Jd4vmARmiwjMZ5Lob+cHKWIW2MwoMXFpMwtIQlgg WGLu8X2MIDaLgKrE5A0zweK8AjYSKy5PhlogL7HwP9heTgFbiX2XbrGB2EJAJVu7nzFPYORb wMiwilEytaA4Nz232LDAMC+1XK84Mbe4NC9dLzk/dxMjOEq0NHcwXl4Sf4hRgINRiYf3Rm95 nBBrYllxZe4hRgkOZiUR3s2pFXFCvCmJlVWpRfnxRaU5qcWHGKU5WJTEeZ/mHYsUEkhPLEnN Tk0tSC2CyTJxcEo1MBovOqR8+WWsncxxd1+XvQYMhcK/OQ4+vlhzaWPopNxSkaqt56vep2aX POpNsr76QvGH0NJ/L/oks54niubs/J/y6PnsJGbhw7Gtui6XxJQfL+r/2Zl+LzwlxD/h7Nen M3gWibzpKPFeM0eWqYp3B+fDW1msS58kiLStmaDRLzNhsthi0b+sv5VYijMSDbWYi4oTAT2/ SM2OAgAA X-CMS-MailID: 20200323080508epcas1p3c68190cd46635b9ff026a4ae70fc7a3b X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: SVC_REQ_APPROVE CMS-TYPE: 101P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20200323080508epcas1p3c68190cd46635b9ff026a4ae70fc7a3b References: <20200323080503.6224-1-jaewon31.kim@samsung.com> 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: In Android system ion system heap size is huge like hundreds of MB. To know overal system memory usage, include ion system heap size in proc/meminfo_extra. To include heap size, use register_meminfo_extra introduced in previous patch. Prior to register we need to add stats to show the ion heap usage. Add total_allocated into ion heap and count it on allocation and freeing. In a ion heap using ION_HEAP_FLAG_DEFER_FREE, a buffer can be freed from user but still live on deferred free list. Keep stats until the buffer is finally freed so that we can cover situation of deferred free thread stuck problem. i.e) cat /proc/meminfo_extra | grep IonSystemHeap IonSystemHeap: 242620 kB i.e.) show_mem on oom <6>[ 420.856428] Mem-Info: <6>[ 420.856433] IonSystemHeap:32813kB Signed-off-by: Jaewon Kim --- drivers/staging/android/ion/ion.c | 2 ++ drivers/staging/android/ion/ion.h | 1 + drivers/staging/android/ion/ion_system_heap.c | 2 ++ 3 files changed, 5 insertions(+) diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c index 38b51eace4f9..76db91a9f26a 100644 --- a/drivers/staging/android/ion/ion.c +++ b/drivers/staging/android/ion/ion.c @@ -74,6 +74,7 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap, INIT_LIST_HEAD(&buffer->attachments); mutex_init(&buffer->lock); + atomic_long_add(len, &heap->total_allocated); return buffer; err1: @@ -95,6 +96,7 @@ void ion_buffer_destroy(struct ion_buffer *buffer) buffer->heap->num_of_buffers--; buffer->heap->num_of_alloc_bytes -= buffer->size; spin_unlock(&buffer->heap->stat_lock); + atomic_long_sub(buffer->size, &buffer->heap->total_allocated); kfree(buffer); } diff --git a/drivers/staging/android/ion/ion.h b/drivers/staging/android/ion/ion.h index 74914a266e25..10867a2e5728 100644 --- a/drivers/staging/android/ion/ion.h +++ b/drivers/staging/android/ion/ion.h @@ -157,6 +157,7 @@ struct ion_heap { u64 num_of_buffers; u64 num_of_alloc_bytes; u64 alloc_bytes_wm; + atomic_long_t total_allocated; /* protect heap statistics */ spinlock_t stat_lock; diff --git a/drivers/staging/android/ion/ion_system_heap.c b/drivers/staging/android/ion/ion_system_heap.c index b83a1d16bd89..f7882fb7505d 100644 --- a/drivers/staging/android/ion/ion_system_heap.c +++ b/drivers/staging/android/ion/ion_system_heap.c @@ -259,6 +259,8 @@ static struct ion_heap *__ion_system_heap_create(void) if (ion_system_heap_create_pools(heap->pools)) goto free_heap; + register_meminfo_extra(&heap->heap.total_allocated, PAGE_SHIFT, + "IonSystemHeap"); return &heap->heap; free_heap: -- 2.13.7