linux-kernel - [PATCH 12/16] mm/page_alloc: use helper macro SZ

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Date:   Fri, 9 Sep 2022 17:24:47 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <david@...hat.com>, <osalvador@...e.de>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, <linmiaohe@...wei.com>
Subject: [PATCH 12/16] mm/page_alloc: use helper macro SZ_1{K,M}

Use helper macro SZ_1K and SZ_1M to do the size conversion. Minor
readability improvement.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/page_alloc.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 7a8a6bb08a15..e1c7f98cff96 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -7053,7 +7053,7 @@ static int zone_batchsize(struct zone *zone)
 	 * size is striking a balance between allocation latency
 	 * and zone lock contention.
 	 */
-	batch = min(zone_managed_pages(zone) >> 10, (1024 * 1024) / PAGE_SIZE);
+	batch = min(zone_managed_pages(zone) >> 10, SZ_1M / PAGE_SIZE);
 	batch /= 4;		/* We effectively *= 4 below */
 	if (batch < 1)
 		batch = 1;
@@ -8528,8 +8528,8 @@ void __init mem_init_print_info(void)
 #endif
 		")\n",
 		K(nr_free_pages()), K(physpages),
-		codesize >> 10, datasize >> 10, rosize >> 10,
-		(init_data_size + init_code_size) >> 10, bss_size >> 10,
+		codesize / SZ_1K, datasize / SZ_1K, rosize / SZ_1K,
+		(init_data_size + init_code_size) / SZ_1K, bss_size / SZ_1K,
 		K(physpages - totalram_pages() - totalcma_pages),
 		K(totalcma_pages)
 #ifdef	CONFIG_HIGHMEM
@@ -9055,7 +9055,7 @@ void *__init alloc_large_system_hash(const char *tablename,
 
 		/* It isn't necessary when PAGE_SIZE >= 1MB */
 		if (PAGE_SHIFT < 20)
-			numentries = round_up(numentries, (1<<20)/PAGE_SIZE);
+			numentries = round_up(numentries, SZ_1M / PAGE_SIZE);
 
 #if __BITS_PER_LONG > 32
 		if (!high_limit) {
-- 
2.23.0