diff options
| author | Sherry Yang <sherryy@android.com> | 2017-08-31 11:56:36 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-09-01 08:53:32 +0200 |
| commit | 8ef4665aa129a14f3733efc651c53a3c6c47b500 (patch) | |
| tree | 4fc67d313c1ca17928b1a395eb7b06bd067cdb75 /drivers | |
| parent | 957ccc2bc8f9ebfe8b19112cdc6c2bb20fd7bcf8 (diff) | |
| download | lwn-8ef4665aa129a14f3733efc651c53a3c6c47b500.tar.gz lwn-8ef4665aa129a14f3733efc651c53a3c6c47b500.zip | |
android: binder: Add page usage in binder stats
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/android/binder.c | 2 | ||||
| -rw-r--r-- | drivers/android/binder_alloc.c | 28 | ||||
| -rw-r--r-- | drivers/android/binder_alloc.h | 2 |
3 files changed, 32 insertions, 0 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c index ba9e613b42d6..56b380292cc5 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -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) { diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c index 2624a502fcde..8fe165844e47 100644 --- a/drivers/android/binder_alloc.c +++ b/drivers/android/binder_alloc.c @@ -832,6 +832,34 @@ void binder_alloc_print_allocated(struct seq_file *m, } /** + * 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 * diff --git a/drivers/android/binder_alloc.h b/drivers/android/binder_alloc.h index fa707cc63393..a3a3602c689c 100644 --- a/drivers/android/binder_alloc.h +++ b/drivers/android/binder_alloc.h @@ -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 |