From: Liam Ni Date: Sat, 3 Jun 2023 02:31:16 +0000 (+0800) Subject: mm/early_ioremap.c: improve the execution efficiency of early_ioremap_setup() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5e07472583840308949ce807b11274de15cb79a0;p=linux.git 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 Signed-off-by: Andrew Morton --- diff --git a/mm/early_ioremap.c b/mm/early_ioremap.c index 9bc12e526ed0b..ce06b2884789a 100644 --- a/mm/early_ioremap.c +++ b/mm/early_ioremap.c @@ -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)