From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/mm/vmalloc.c | 17 +++++++++--------
1 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/kernel/mm/vmalloc.c b/kernel/mm/vmalloc.c
index 3f6567f..fa1ea48 100644
--- a/kernel/mm/vmalloc.c
+++ b/kernel/mm/vmalloc.c
@@ -1549,7 +1549,7 @@
struct vmap_block *vb;
struct vmap_area *va;
unsigned long vb_idx;
- int node, err, cpu;
+ int node, err;
void *vaddr;
node = numa_node_id();
@@ -1586,12 +1586,11 @@
return ERR_PTR(err);
}
- cpu = get_cpu_light();
- vbq = this_cpu_ptr(&vmap_block_queue);
+ vbq = &get_cpu_var(vmap_block_queue);
spin_lock(&vbq->lock);
list_add_tail_rcu(&vb->free_list, &vbq->free);
spin_unlock(&vbq->lock);
- put_cpu_light();
+ put_cpu_var(vmap_block_queue);
return vaddr;
}
@@ -1656,7 +1655,6 @@
struct vmap_block *vb;
void *vaddr = NULL;
unsigned int order;
- int cpu;
BUG_ON(offset_in_page(size));
BUG_ON(size > PAGE_SIZE*VMAP_MAX_ALLOC);
@@ -1671,8 +1669,7 @@
order = get_order(size);
rcu_read_lock();
- cpu = get_cpu_light();
- vbq = this_cpu_ptr(&vmap_block_queue);
+ vbq = &get_cpu_var(vmap_block_queue);
list_for_each_entry_rcu(vb, &vbq->free, free_list) {
unsigned long pages_off;
@@ -1695,7 +1692,7 @@
break;
}
- put_cpu_light();
+ put_cpu_var(vmap_block_queue);
rcu_read_unlock();
/* Allocate new block if nothing was found */
@@ -2466,6 +2463,10 @@
free_vm_area(area);
return NULL;
}
+
+ flush_cache_vmap((unsigned long)area->addr,
+ (unsigned long)area->addr + count * PAGE_SIZE);
+
return area->addr;
}
EXPORT_SYMBOL_GPL(vmap_pfn);
--
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