On Mon, Nov 13, 2017 at 10:06:56AM +0100, Martijn Coenen wrote: > Show the high watermark of the index into the alloc->pages > array, to facilitate sizing the buffer on a per-process > basis. > > Signed-off-by: Martijn Coenen <maco@xxxxxxxxxxx> > --- > drivers/android/binder_alloc.c | 4 ++++ > drivers/android/binder_alloc.h | 2 ++ > 2 files changed, 6 insertions(+) > > diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c > index 6f6f745605af..0dba2308125c 100644 > --- a/drivers/android/binder_alloc.c > +++ b/drivers/android/binder_alloc.c > @@ -281,6 +281,9 @@ 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 */ > } > @@ -853,6 +856,7 @@ 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); Who can use this? A userspace tool? Or something else? This is ok for 4.15-rc1, right? thanks, greg k-h _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
