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Merge "ion: Fix API changes in dma-buf-ref.c"

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This commit is contained in:
qctecmdr 2020-01-08 16:41:06 -08:00 • committed by Gerrit - the friendly Code Review server
commit dda0be3d74
1 changed files with 12 additions and 14 deletions
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26
drivers/dma-buf/dma-buf-ref.c
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@ -63,20 +63,15 @@ out:
void dma_buf_ref_mod(struct msm_dma_buf *msm_dma_buf, int nr)
{
unsigned long entries[DMA_BUF_STACK_DEPTH];
struct stack_trace trace = {
.nr_entries = 0,
.entries = entries,
.max_entries = DMA_BUF_STACK_DEPTH,
.skip = 1
};
int nr_entries;
depot_stack_handle_t handle;
save_stack_trace(&trace);
if (trace.nr_entries != 0 &&
trace.entries[trace.nr_entries-1] == ULONG_MAX)
trace.nr_entries--;
nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 1);
handle = depot_save_stack(&trace, GFP_KERNEL);
if (nr_entries != 0 && entries[nr_entries - 1] == ULONG_MAX)
nr_entries--;
handle = stack_depot_save(entries, nr_entries, GFP_KERNEL);
if (!handle)
return;
@ -91,18 +86,21 @@ int dma_buf_ref_show(struct seq_file *s, struct msm_dma_buf *msm_dma_buf)
char *buf;
struct dma_buf_ref *ref;
int count = 0;
struct stack_trace trace;
buf = (void *)__get_free_page(GFP_KERNEL);
if (!buf)
return -ENOMEM;
list_for_each_entry(ref, &msm_dma_buf->refs, list) {
unsigned long *entries;
int nr_entries;
count += ref->count;
seq_printf(s, "References: %d\n", ref->count);
depot_fetch_stack(ref->handle, &trace);
snprint_stack_trace(buf, PAGE_SIZE, &trace, 0);
nr_entries = stack_depot_fetch(ref->handle, &entries);
stack_trace_snprint(buf, PAGE_SIZE, entries, nr_entries, 0);
seq_puts(s, buf);
seq_putc(s, '\n');
}