TWxSoftware/twx-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

iommu/iova: dump iova when alloc failed

Browse Source 
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Change-Id: I8e2d99ed2e22e1c22f11ba67b5a69783d39df87d
This commit is contained in:
Jianqun Xu
2022-06-02 16:20:01 +08:00
committed by Tao Huang
parent 7d1bea221a
commit 0c51523b06
1 changed files with 69 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/iommu/iova.c
+69 -1
View File
@@ -25,6 +25,7 @@ static void init_iova_rcaches(struct iova_domain *iovad);
static void free_iova_rcaches(struct iova_domain *iovad);
static void fq_destroy_all_entries(struct iova_domain *iovad);
static void fq_flush_timeout(struct timer_list *t);
static void iova_dump(struct iova_domain *iovad);
void
init_iova_domain(struct iova_domain *iovad, unsigned long granule,
@@ -523,8 +524,10 @@ retry:
if (!new_iova) {
unsigned int cpu;
if (!flush_rcache)
if (!flush_rcache) {
iova_dump(iovad);
return 0;
}
/* Try replenishing IOVAs by flushing rcache. */
flush_rcache = false;
@@ -887,6 +890,71 @@ struct iova_cpu_rcache {
struct iova_magazine *prev;
};
static void iova_dump(struct iova_domain *iovad)
{
struct iova_cpu_rcache *cpu_rcache;
struct iova_rcache *rcache;
struct iova *iova, *t;
struct iova_magazine *mag;
unsigned long flags, rflags;
unsigned int cpu;
int i = 0, j;
spin_lock_irqsave(&iovad->iova_rbtree_lock, flags);
rbtree_postorder_for_each_entry_safe(iova, t, &iovad->rbroot, node) {
dma_addr_t start = iova->pfn_lo << iova_shift(iovad);
dma_addr_t end = iova->pfn_hi << iova_shift(iovad);
if (iova->pfn_lo == IOVA_ANCHOR)
continue;
pr_info("%4d: [%pad..%pad] (%4lu - %4lu)MiB\n",
i++, &start, &end,
iova->pfn_lo >> (20 - PAGE_SHIFT),
iova->pfn_hi >> (20 - PAGE_SHIFT));
}
spin_unlock_irqrestore(&iovad->iova_rbtree_lock, flags);
pr_info("global cache\n");
for (i = 0; i < IOVA_RANGE_CACHE_MAX_SIZE; ++i) {
rcache = &iovad->rcaches[i];
spin_lock_irqsave(&rcache->lock, rflags);
for (j = 0; j < rcache->depot_size; ++j) {
mag = rcache->depot[j];
spin_lock_irqsave(&iovad->iova_rbtree_lock, flags);
for (i = 0 ; i < mag->size; ++i) {
struct iova *v = private_find_iova(iovad, mag->pfns[i]);
dma_addr_t s = v->pfn_lo << iova_shift(iovad);
dma_addr_t e = v->pfn_hi << iova_shift(iovad);
pr_info("[%pad..%pad]\n", &s, &e);
}
spin_unlock_irqrestore(&iovad->iova_rbtree_lock, flags);
}
spin_unlock_irqrestore(&rcache->lock, rflags);
}
for_each_online_cpu(cpu) {
pr_info("cpu%d cache\n", cpu);
for (i = 0; i < IOVA_RANGE_CACHE_MAX_SIZE; ++i) {
rcache = &iovad->rcaches[i];
cpu_rcache = per_cpu_ptr(rcache->cpu_rcaches, cpu);
mag = cpu_rcache->loaded;
spin_lock_irqsave(&cpu_rcache->lock, rflags);
spin_lock_irqsave(&iovad->iova_rbtree_lock, flags);
for (i = 0 ; i < mag->size; ++i) {
struct iova *v = private_find_iova(iovad, mag->pfns[i]);
dma_addr_t s = v->pfn_lo << iova_shift(iovad);
dma_addr_t e = v->pfn_hi << iova_shift(iovad);
pr_info("[%pad..%pad]\n", &s, &e);
}
spin_unlock_irqrestore(&iovad->iova_rbtree_lock, flags);
spin_unlock_irqrestore(&cpu_rcache->lock, rflags);
}
}
}
static struct iova_magazine *iova_magazine_alloc(gfp_t flags)
{
return kzalloc(sizeof(struct iova_magazine), flags);