From: Yuntao Wang <ytcoode@gmail.com>
To: linux-kernel@vger.kernel.org, x86@kernel.org
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>, Yuntao Wang <ytcoode@gmail.com>
Subject: [PATCH] x86/mm: Remove unnecessary logic from numa_cleanup_meminfo()
Date: Thu, 7 Dec 2023 12:18:41 +0800 [thread overview]
Message-ID: <20231207041841.205818-1-ytcoode@gmail.com> (raw)
The `bi->start` field is of type u64, which can only hold values greater
than or equal to 0. Therefore, the logic `bi->start = max(bi->start, low)`
is unnecessary. Remove it.
Signed-off-by: Yuntao Wang <ytcoode@gmail.com>
---
arch/x86/mm/numa.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index b29ceb19e46e..f7336077b07e 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -239,7 +239,6 @@ static void __init alloc_node_data(int nid)
*/
int __init numa_cleanup_meminfo(struct numa_meminfo *mi)
{
- const u64 low = 0;
const u64 high = PFN_PHYS(max_pfn);
int i, j, k;
@@ -254,9 +253,6 @@ int __init numa_cleanup_meminfo(struct numa_meminfo *mi)
continue;
}
- /* make sure all non-reserved blocks are inside the limits */
- bi->start = max(bi->start, low);
-
/* preserve info for non-RAM areas above 'max_pfn': */
if (bi->end > high) {
numa_add_memblk_to(bi->nid, high, bi->end,
--
2.43.0
reply other threads:[~2023-12-07 4:19 UTC|newest]
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