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authorCarlos Llamas <cmllamas@google.com>2023-12-01 17:21:42 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-12-05 09:23:39 +0900
commit9409af24e4503d14093b27db9425f7c99e64fef4 (patch)
treeeb10529df0c30143b076e40e01fa367bc037786e /drivers/android
parent89f71743bf42217dd4092fda703a8e4f6f4e55ac (diff)
binder: separate the no-space debugging logic
Move the no-space debugging logic into a separate function. Lets also mark this branch as unlikely in binder_alloc_new_buf_locked() as most requests will fit without issue. Also add a few cosmetic changes and suggestions from checkpatch. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Carlos Llamas <cmllamas@google.com> Link: https://lore.kernel.org/r/20231201172212.1813387-14-cmllamas@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/android')
-rw-r--r--drivers/android/binder_alloc.c71
1 files changed, 40 insertions, 31 deletions
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c
index b5c3e56318e1..3dca7b199246 100644
--- a/drivers/android/binder_alloc.c
+++ b/drivers/android/binder_alloc.c
@@ -319,6 +319,43 @@ static inline struct vm_area_struct *binder_alloc_get_vma(
return smp_load_acquire(&alloc->vma);
}
+static void debug_no_space_locked(struct binder_alloc *alloc)
+{
+ size_t largest_alloc_size = 0;
+ struct binder_buffer *buffer;
+ size_t allocated_buffers = 0;
+ size_t largest_free_size = 0;
+ size_t total_alloc_size = 0;
+ size_t total_free_size = 0;
+ size_t free_buffers = 0;
+ size_t buffer_size;
+ struct rb_node *n;
+
+ for (n = rb_first(&alloc->allocated_buffers); n; n = rb_next(n)) {
+ buffer = rb_entry(n, struct binder_buffer, rb_node);
+ buffer_size = binder_alloc_buffer_size(alloc, buffer);
+ allocated_buffers++;
+ total_alloc_size += buffer_size;
+ if (buffer_size > largest_alloc_size)
+ largest_alloc_size = buffer_size;
+ }
+
+ for (n = rb_first(&alloc->free_buffers); n; n = rb_next(n)) {
+ buffer = rb_entry(n, struct binder_buffer, rb_node);
+ buffer_size = binder_alloc_buffer_size(alloc, buffer);
+ free_buffers++;
+ total_free_size += buffer_size;
+ if (buffer_size > largest_free_size)
+ largest_free_size = buffer_size;
+ }
+
+ binder_alloc_debug(BINDER_DEBUG_USER_ERROR,
+ "allocated: %zd (num: %zd largest: %zd), free: %zd (num: %zd largest: %zd)\n",
+ total_alloc_size, allocated_buffers,
+ largest_alloc_size, total_free_size,
+ free_buffers, largest_free_size);
+}
+
static bool debug_low_async_space_locked(struct binder_alloc *alloc)
{
/*
@@ -398,42 +435,14 @@ static struct binder_buffer *binder_alloc_new_buf_locked(
}
}
- if (best_fit == NULL) {
- size_t allocated_buffers = 0;
- size_t largest_alloc_size = 0;
- size_t total_alloc_size = 0;
- size_t free_buffers = 0;
- size_t largest_free_size = 0;
- size_t total_free_size = 0;
-
- for (n = rb_first(&alloc->allocated_buffers); n != NULL;
- n = rb_next(n)) {
- buffer = rb_entry(n, struct binder_buffer, rb_node);
- buffer_size = binder_alloc_buffer_size(alloc, buffer);
- allocated_buffers++;
- total_alloc_size += buffer_size;
- if (buffer_size > largest_alloc_size)
- largest_alloc_size = buffer_size;
- }
- for (n = rb_first(&alloc->free_buffers); n != NULL;
- n = rb_next(n)) {
- buffer = rb_entry(n, struct binder_buffer, rb_node);
- buffer_size = binder_alloc_buffer_size(alloc, buffer);
- free_buffers++;
- total_free_size += buffer_size;
- if (buffer_size > largest_free_size)
- largest_free_size = buffer_size;
- }
+ if (unlikely(!best_fit)) {
binder_alloc_debug(BINDER_DEBUG_USER_ERROR,
"%d: binder_alloc_buf size %zd failed, no address space\n",
alloc->pid, size);
- binder_alloc_debug(BINDER_DEBUG_USER_ERROR,
- "allocated: %zd (num: %zd largest: %zd), free: %zd (num: %zd largest: %zd)\n",
- total_alloc_size, allocated_buffers,
- largest_alloc_size, total_free_size,
- free_buffers, largest_free_size);
+ debug_no_space_locked(alloc);
return ERR_PTR(-ENOSPC);
}
+
if (n == NULL) {
buffer = rb_entry(best_fit, struct binder_buffer, rb_node);
buffer_size = binder_alloc_buffer_size(alloc, buffer);