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[Qemu-devel] [PULL 03/29] exec.c: get nodes_nb_alloc with one MAX calcul
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 03/29] exec.c: get nodes_nb_alloc with one MAX calculation |
Date: |
Mon, 16 Sep 2019 16:41:43 +0200 |
From: Wei Yang <address@hidden>
The purpose of these two MAX here is to get the maximum of these three
variables:
A: map->nodes_nb + nodes
B: map->nodes_nb_alloc
C: alloc_hint
We can write it like MAX(A, B, C). Since the if condition says A > B,
this means MAX(A, B, C) = MAX(A, C).
This patch just simplify the calculation a bit.
Signed-off-by: Wei Yang <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
exec.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/exec.c b/exec.c
index 8e0c400..ff3cb3e 100644
--- a/exec.c
+++ b/exec.c
@@ -227,8 +227,7 @@ static void phys_map_node_reserve(PhysPageMap *map,
unsigned nodes)
{
static unsigned alloc_hint = 16;
if (map->nodes_nb + nodes > map->nodes_nb_alloc) {
- map->nodes_nb_alloc = MAX(map->nodes_nb_alloc, alloc_hint);
- map->nodes_nb_alloc = MAX(map->nodes_nb_alloc, map->nodes_nb + nodes);
+ map->nodes_nb_alloc = MAX(alloc_hint, map->nodes_nb + nodes);
map->nodes = g_renew(Node, map->nodes, map->nodes_nb_alloc);
alloc_hint = map->nodes_nb_alloc;
}
--
1.8.3.1
- [Qemu-devel] [PULL 00/29] Misc patches for 2019-09-16, Paolo Bonzini, 2019/09/16
- [Qemu-devel] [PULL 01/29] i386/kvm: support guest access CORE cstate, Paolo Bonzini, 2019/09/16
- [Qemu-devel] [PULL 02/29] exec.c: replace hwaddr with uint64_t for better understanding, Paolo Bonzini, 2019/09/16
- [Qemu-devel] [PULL 03/29] exec.c: get nodes_nb_alloc with one MAX calculation,
Paolo Bonzini <=
- [Qemu-devel] [PULL 04/29] exec.c: subpage->sub_section is already initialized to 0, Paolo Bonzini, 2019/09/16
- [Qemu-devel] [PULL 06/29] exec.c: add a check between constants to see whether we could skip, Paolo Bonzini, 2019/09/16
- [Qemu-devel] [PULL 05/29] exec.c: correct the maximum skip value during compact, Paolo Bonzini, 2019/09/16
- [Qemu-devel] [PULL 07/29] win32: fix README file in NSIS installer, Paolo Bonzini, 2019/09/16
- [Qemu-devel] [PULL 08/29] test-char: fix AddressSanitizer failure, Paolo Bonzini, 2019/09/16
- [Qemu-devel] [PULL 09/29] hw/i386: Move CONFIG_ACPI_PCI to CONFIG_PC, Paolo Bonzini, 2019/09/16
- [Qemu-devel] [PULL 10/29] elf-ops.h: fix int overflow in load_elf(), Paolo Bonzini, 2019/09/16
- [Qemu-devel] [PULL 12/29] memory: inline and optimize devend_memop, Paolo Bonzini, 2019/09/16
- [Qemu-devel] [PULL 11/29] memory: fetch pmem size in get_file_size(), Paolo Bonzini, 2019/09/16
- [Qemu-devel] [PULL 15/29] hw/i386/pc: Use e820_get_num_entries() to access e820_entries, Paolo Bonzini, 2019/09/16