linux-kernel - [v1 3/6] memblock: add parameter to memblock_setclr_flag for selecting memblock

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Message-Id: <20230727204624.1942372-4-usama.arif@bytedance.com>
Date:   Thu, 27 Jul 2023 21:46:21 +0100
From:   Usama Arif <usama.arif@...edance.com>
To:     linux-mm@...ck.org, muchun.song@...ux.dev, mike.kravetz@...cle.com,
        rppt@...nel.org
Cc:     linux-kernel@...r.kernel.org, fam.zheng@...edance.com,
        liangma@...ngbit.com, simon.evans@...edance.com,
        punit.agrawal@...edance.com, Usama Arif <usama.arif@...edance.com>
Subject: [v1 3/6] memblock: add parameter to memblock_setclr_flag for selecting memblock_type

This is in preparation for setting flags (for e.g. to not initialize
struct pages) on reserved memory region.

Signed-off-by: Usama Arif <usama.arif@...edance.com>
---
 mm/memblock.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/mm/memblock.c b/mm/memblock.c
index f9e61e565a53..4fd431d16ef2 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -897,11 +897,16 @@ int __init_memblock memblock_physmem_add(phys_addr_t base, phys_addr_t size)
  * Return: 0 on success, -errno on failure.
  */
 static int __init_memblock memblock_setclr_flag(phys_addr_t base,
-				phys_addr_t size, int set, int flag)
+				phys_addr_t size, int set, int flag, bool reserved)
 {
-	struct memblock_type *type = &memblock.memory;
+	struct memblock_type *type;
 	int i, ret, start_rgn, end_rgn;
 
+	if (reserved)
+		type = &memblock.reserved;
+	else
+		type = &memblock.memory;
+
 	ret = memblock_isolate_range(type, base, size, &start_rgn, &end_rgn);
 	if (ret)
 		return ret;
@@ -928,7 +933,7 @@ static int __init_memblock memblock_setclr_flag(phys_addr_t base,
  */
 int __init_memblock memblock_mark_hotplug(phys_addr_t base, phys_addr_t size)
 {
-	return memblock_setclr_flag(base, size, 1, MEMBLOCK_HOTPLUG);
+	return memblock_setclr_flag(base, size, 1, MEMBLOCK_HOTPLUG, 0);
 }
 
 /**
@@ -940,7 +945,7 @@ int __init_memblock memblock_mark_hotplug(phys_addr_t base, phys_addr_t size)
  */
 int __init_memblock memblock_clear_hotplug(phys_addr_t base, phys_addr_t size)
 {
-	return memblock_setclr_flag(base, size, 0, MEMBLOCK_HOTPLUG);
+	return memblock_setclr_flag(base, size, 0, MEMBLOCK_HOTPLUG, 0);
 }
 
 /**
@@ -957,7 +962,7 @@ int __init_memblock memblock_mark_mirror(phys_addr_t base, phys_addr_t size)
 
 	system_has_some_mirror = true;
 
-	return memblock_setclr_flag(base, size, 1, MEMBLOCK_MIRROR);
+	return memblock_setclr_flag(base, size, 1, MEMBLOCK_MIRROR, 0);
 }
 
 /**
@@ -977,7 +982,7 @@ int __init_memblock memblock_mark_mirror(phys_addr_t base, phys_addr_t size)
  */
 int __init_memblock memblock_mark_nomap(phys_addr_t base, phys_addr_t size)
 {
-	return memblock_setclr_flag(base, size, 1, MEMBLOCK_NOMAP);
+	return memblock_setclr_flag(base, size, 1, MEMBLOCK_NOMAP, 0);
 }
 
 /**
@@ -989,7 +994,7 @@ int __init_memblock memblock_mark_nomap(phys_addr_t base, phys_addr_t size)
  */
 int __init_memblock memblock_clear_nomap(phys_addr_t base, phys_addr_t size)
 {
-	return memblock_setclr_flag(base, size, 0, MEMBLOCK_NOMAP);
+	return memblock_setclr_flag(base, size, 0, MEMBLOCK_NOMAP, 0);
 }
 
 static bool should_skip_region(struct memblock_type *type,
-- 
2.25.1