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Commit ca1f6a05 authored by Martijn Coenen's avatar Martijn Coenen
Browse files

ANDROID: binder: show high watermark of alloc->pages. 



Show the high watermark of the index into the alloc->pages
array, to facilitate sizing the buffer on a per-process
basis.

Change-Id: I2b40cd16628e0ee45216c51dc9b3c5b0c862032e
Signed-off-by: default avatarMartijn Coenen <maco@android.com>
parent 60bd5e7c

drivers/staging/android/binder_alloc.c

+4 −0
Original line number Diff line number Diff line
@@ -282,6 +282,9 @@ static int binder_update_page_range(struct binder_alloc *alloc, int allocate, 
			goto err_vm_insert_page_failed;

		}



		if (index + 1 > alloc->pages_high)

			alloc->pages_high = index + 1;



		trace_binder_alloc_page_end(alloc, index);

		/* vm_insert_page does not seem to increment the refcount */

	}
@@ -855,6 +858,7 @@ void binder_alloc_print_pages(struct seq_file *m, 
	}

	mutex_unlock(&alloc->mutex);

	seq_printf(m, "  pages: %d:%d:%d\n", active, lru, free);

	seq_printf(m, "  pages high watermark: %zu\n", alloc->pages_high);

}



/**

drivers/staging/android/binder_alloc.h

+2 −0
Original line number Diff line number Diff line
@@ -92,6 +92,7 @@ struct binder_lru_page { 
 * @pages:              array of binder_lru_page

 * @buffer_size:        size of address space specified via mmap

 * @pid:                pid for associated binder_proc (invariant after init)

 * @pages_high:         high watermark of offset in @pages

 *

 * Bookkeeping structure for per-proc address space management for binder

 * buffers. It is normally initialized during binder_init() and binder_mmap()
@@ -112,6 +113,7 @@ struct binder_alloc { 
	size_t buffer_size;

	uint32_t buffer_free;

	int pid;

	size_t pages_high;

};



#ifdef CONFIG_ANDROID_BINDER_IPC_SELFTEST