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Code Issues Releases Wiki Activity

mm/early_ioremap.c: improve the execution efficiency of early_ioremap_setup() 

Reduce the number of invalid loops of the function early_ioremap_setup()
to improve the efficiency of function execution

Link: https://lkml.kernel.org/r/CACZJ9cU6t5sLoDwE6_XOg+UJLpZt4+qHfjYN2bA0s+3y9y6pQQ@mail.gmail.com
Signed-off-by: LiamNi <zhiguangni01@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Liam Ni 2023-06-03 10:31:16 +08:00 committed by Andrew Morton
parent 396faf8898
commit 5e07472583
1 changed files with 3 additions and 5 deletions
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8
mm/early_ioremap.c
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@ -72,12 +72,10 @@ void __init early_ioremap_setup(void)
{
int i;
for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
if (WARN_ON(prev_map[i]))
break;
for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
for (i = 0; i < FIX_BTMAPS_SLOTS; i++) {
WARN_ON_ONCE(prev_map[i]);
slot_virt[i] = __fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i);
}
}
static int __init check_early_ioremap_leak(void)