From: Faiyaz Mohammed <faiyazm@codeaurora.org>
To: linux-mm@kvack.org, linux-kernel@vger.kernel.org, rppt@kernel.org
Cc: vinmenon@codeaurora.org, Faiyaz Mohammed <faiyazm@codeaurora.org>
Subject: [PATCH v2] mm: memblock: add more debug logs
Date: Mon, 16 Nov 2020 10:14:04 +0530 [thread overview]
Message-ID: <1605501844-22390-1-git-send-email-faiyazm@codeaurora.org> (raw)
It is useful to know the exact caller of memblock_phys_alloc_range() to
track early memory reservations during development.
Currently, when memblock debugging is enabled, the allocations done with
memblock_phys_alloc_range() are only reported at memblock_reserve():
[ 0.000000] memblock_reserve: [0x000000023fc6b000-0x000000023fc6bfff] memblock_alloc_range_nid+0xc0/0x188
Add memblock_dbg() to memblock_phys_alloc_range() to get details about
its usage.
For example:
[ 0.000000] memblock_phys_alloc_range: 4096 bytes align=0x1000 from=0x0000000000000000 max_addr=0x0000000000000000 early_pgtable_alloc+0x24/0x178
[ 0.000000] memblock_reserve: [0x000000023fc6b000-0x000000023fc6bfff] memblock_alloc_range_nid+0xc0/0x188
Signed-off-by: Faiyaz Mohammed <faiyazm@codeaurora.org>
---
mm/memblock.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/mm/memblock.c b/mm/memblock.c
index 049df41..f65af9f 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1419,6 +1419,9 @@ phys_addr_t __init memblock_phys_alloc_range(phys_addr_t size,
phys_addr_t start,
phys_addr_t end)
{
+ memblock_dbg("%s: %llu bytes align=0x%llx from=%pa max_addr=%pa %pS\n",
+ __func__, (u64)size, (u64)align, &start, &end,
+ (void *)_RET_IP_);
return memblock_alloc_range_nid(size, align, start, end, NUMA_NO_NODE,
false);
}
--
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:[~2020-11-16 4:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-16 4:44 Faiyaz Mohammed [this message]
2020-11-16 7:45 ` [PATCH v2] mm: memblock: add more debug logs Mike Rapoport
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