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android: binder: Add page usage in binder stats

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Add the number of active, lru, and free pages for
each binder process in binder stats

Signed-off-by: Sherry Yang <sherryy@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sherry Yang 2017-08-31 11:56:36 -07:00 committed by Greg Kroah-Hartman
parent 957ccc2bc8
commit 8ef4665aa1
3 changed files with 32 additions and 0 deletions
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2
drivers/android/binder.c
View file

@ -5047,6 +5047,8 @@ static void print_binder_proc_stats(struct seq_file *m,
count = binder_alloc_get_allocated_count(&proc->alloc);
seq_printf(m, " buffers: %d\n", count);
binder_alloc_print_pages(m, &proc->alloc);
count = 0;
binder_inner_proc_lock(proc);
list_for_each_entry(w, &proc->todo, entry) {

28
drivers/android/binder_alloc.c
View file

@ -831,6 +831,34 @@ void binder_alloc_print_allocated(struct seq_file *m,
mutex_unlock(&alloc->mutex);
}
/**
* binder_alloc_print_pages() - print page usage
* @m: seq_file for output via seq_printf()
* @alloc: binder_alloc for this proc
*/
void binder_alloc_print_pages(struct seq_file *m,
struct binder_alloc *alloc)
{
struct binder_lru_page *page;
int i;
int active = 0;
int lru = 0;
int free = 0;
mutex_lock(&alloc->mutex);
for (i = 0; i < alloc->buffer_size / PAGE_SIZE; i++) {
page = &alloc->pages[i];
if (!page->page_ptr)
free++;
else if (list_empty(&page->lru))
active++;
else
lru++;
}
mutex_unlock(&alloc->mutex);
seq_printf(m, " pages: %d:%d:%d\n", active, lru, free);
}
/**
* binder_alloc_get_allocated_count() - return count of buffers
* @alloc: binder_alloc for this proc

2
drivers/android/binder_alloc.h
View file

@ -142,6 +142,8 @@ extern void binder_alloc_deferred_release(struct binder_alloc *alloc);
extern int binder_alloc_get_allocated_count(struct binder_alloc *alloc);
extern void binder_alloc_print_allocated(struct seq_file *m,
struct binder_alloc *alloc);
void binder_alloc_print_pages(struct seq_file *m,
struct binder_alloc *alloc);
/**
* binder_alloc_get_free_async_space() - get free space available for async