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Store pmem temporary arrays on the stack to reduce memory footprint.

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Now we have more stack space available for the BSP during initialisation,
we no longer need to store the temporary data off stack.
This commit is contained in:
Martin Whitaker 2022-01-09 21:27:44 +00:00
parent 0aa1b1fa97
commit 0fded3e321
1 changed files with 5 additions and 7 deletions
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12
system/pmem.c
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@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2020 Martin Whitaker.
// Copyright (C) 2020-2022 Martin Whitaker.
//
// Derived from memtest86+ memsize.c
//
@ -53,13 +53,11 @@ static int sanitize_e820_map(e820_entry_t new_map[], const e820_entry_t orig_map
uint64_t addr; // address for this change point
};
// Make these arrays static to keep the stack use small.
// This function does not need to be reentrant.
static struct change_member change_point_list[2*E820_MAP_SIZE];
static struct change_member *change_point[2*E820_MAP_SIZE];
struct change_member *change_tmp;
struct change_member change_point_list[2*E820_MAP_SIZE];
struct change_member *change_point[2*E820_MAP_SIZE];
struct change_member *change_tmp;
static const e820_entry_t *overlap_list[E820_MAP_SIZE];
const e820_entry_t *overlap_list[E820_MAP_SIZE];
/*
Visually we're performing the following (1,2,3,4 = memory types)...