From: Faiyaz Mohammed <quic_faiyazm@codeaurora.org>
To: akpm@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, david@redhat.com
Cc: guptap@codeaurora.org, Faiyaz Mohammed <faiyazm@codeaurora.org>
Subject: [PATCH v2] mm: page_alloc: Add debug log in free_reserved_area for static memory
Date: Mon, 11 Oct 2021 12:25:50 +0530 [thread overview]
Message-ID: <1633935350-19628-1-git-send-email-quic_faiyazm@codeaurora.org> (raw)
From: Faiyaz Mohammed <faiyazm@codeaurora.org>
For INITRD and initmem memory is reserved through "memblock_reserve"
during boot up but it is free via "free_reserved_area" instead
of "memblock_free".
For example:
[ 0.294848] Freeing initrd memory: 12K.
[ 0.696688] Freeing unused kernel memory: 4096K.
To get the start and end address of the above freed memory and to account
proper memblock added pr_debug log in "free_reserved_area".
After adding log:
[ 0.294837] 0x00000083600000-0x00000083603000 free_initrd_mem+0x20/0x28
[ 0.294848] Freeing initrd memory: 12K.
[ 0.695246] 0x00000081600000-0x00000081a00000 free_initmem+0x70/0xc8
[ 0.696688] Freeing unused kernel memory: 4096K.
Signed-off-by: Faiyaz Mohammed <faiyazm@codeaurora.org>
---
mm/page_alloc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 668edb1..8a1929d4 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -8153,6 +8153,11 @@ unsigned long free_reserved_area(void *start, void *end, int poison, const char
if (pages && s)
pr_info("Freeing %s memory: %ldK\n", s, K(pages));
+#ifdef CONFIG_HAVE_MEMBLOCK
+ memblock_dbg("memblock_free: [%#016llx-%#016llx] %pS\n",
+ __pa(start), __pa(end), (void *)_RET_IP_);
+#endif
+
return pages;
}
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a
member of the Code Aurora Forum, hosted by The Linux Foundation
next reply other threads:[~2021-10-11 6:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-11 6:55 Faiyaz Mohammed [this message]
2021-10-11 6:58 ` [PATCH v2] mm: page_alloc: Add debug log in free_reserved_area for static memory Faiyaz Mohammed
2021-10-11 7:11 Faiyaz Mohammed
2021-10-11 8:34 ` David Hildenbrand
2021-10-13 8:45 ` Faiyaz Mohammed
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