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| author | Sherry Yang <sherryy@android.com> | 2017-08-31 20:56:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-09-01 08:53:32 +0200 |
| commit | 8ef4665aa129a14f3733efc651c53a3c6c47b500 (patch) | |
| tree | 4fc67d313c1ca17928b1a395eb7b06bd067cdb75 /drivers/android/binder_alloc.c | |
| parent | android: binder: fixup crash introduced by moving buffer hdr (diff) | |
| download | linux-8ef4665aa129a14f3733efc651c53a3c6c47b500.tar.xz linux-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/android/binder_alloc.c')
| -rw-r--r-- | drivers/android/binder_alloc.c | 28 |
1 files changed, 28 insertions, 0 deletions
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 * |