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It also avoids confusion with the binder buffer concept, e.g. transaction->buffer. No functional changes in this patch. Reviewed-by: Suren Baghdasaryan Signed-off-by: Carlos Llamas --- drivers/android/binder.c | 2 +- drivers/android/binder_alloc.c | 28 ++++++++++++------------- drivers/android/binder_alloc.h | 4 ++-- drivers/android/binder_alloc_selftest.c | 2 +- drivers/android/binder_trace.h | 2 +- 5 files changed, 19 insertions(+), 19 deletions(-) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 978740537a1a..57265cabec43 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -6350,7 +6350,7 @@ static void print_binder_transaction_ilocked(struct s= eq_file *m, seq_printf(m, " node %d", buffer->target_node->debug_id); seq_printf(m, " size %zd:%zd offset %lx\n", buffer->data_size, buffer->offsets_size, - proc->alloc.buffer - buffer->user_data); + proc->alloc.vm_start - buffer->user_data); } =20 static void print_binder_work_ilocked(struct seq_file *m, diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c index 4c308d860478..71b29bfd8a2e 100644 --- a/drivers/android/binder_alloc.c +++ b/drivers/android/binder_alloc.c @@ -61,7 +61,7 @@ static size_t binder_alloc_buffer_size(struct binder_allo= c *alloc, struct binder_buffer *buffer) { if (list_is_last(&buffer->entry, &alloc->buffers)) - return alloc->buffer + alloc->buffer_size - buffer->user_data; + return alloc->vm_start + alloc->buffer_size - buffer->user_data; return binder_buffer_next(buffer)->user_data - buffer->user_data; } =20 @@ -203,7 +203,7 @@ static void binder_lru_freelist_add(struct binder_alloc= *alloc, size_t index; int ret; =20 - index =3D (page_addr - alloc->buffer) / PAGE_SIZE; + index =3D (page_addr - alloc->vm_start) / PAGE_SIZE; page =3D binder_get_installed_page(alloc, index); if (!page) continue; @@ -291,7 +291,7 @@ static int binder_install_single_page(struct binder_all= oc *alloc, FOLL_NOFAULT, &page, NULL); if (npages <=3D 0) { pr_err("%d: failed to find page at offset %lx\n", - alloc->pid, addr - alloc->buffer); + alloc->pid, addr - alloc->vm_start); ret =3D -ESRCH; break; } @@ -303,7 +303,7 @@ static int binder_install_single_page(struct binder_all= oc *alloc, default: __free_page(page); pr_err("%d: %s failed to insert page at offset %lx with %d\n", - alloc->pid, __func__, addr - alloc->buffer, ret); + alloc->pid, __func__, addr - alloc->vm_start, ret); ret =3D -ENOMEM; break; } @@ -328,7 +328,7 @@ static int binder_install_buffer_pages(struct binder_al= loc *alloc, unsigned long index; int ret; =20 - index =3D (page_addr - alloc->buffer) / PAGE_SIZE; + index =3D (page_addr - alloc->vm_start) / PAGE_SIZE; if (binder_get_installed_page(alloc, index)) continue; =20 @@ -357,7 +357,7 @@ static void binder_lru_freelist_del(struct binder_alloc= *alloc, unsigned long index; bool on_lru; =20 - index =3D (page_addr - alloc->buffer) / PAGE_SIZE; + index =3D (page_addr - alloc->vm_start) / PAGE_SIZE; page =3D binder_get_installed_page(alloc, index); =20 if (page) { @@ -709,8 +709,8 @@ static void binder_free_buf_locked(struct binder_alloc = *alloc, BUG_ON(buffer->free); BUG_ON(size > buffer_size); BUG_ON(buffer->transaction !=3D NULL); - BUG_ON(buffer->user_data < alloc->buffer); - BUG_ON(buffer->user_data > alloc->buffer + alloc->buffer_size); + BUG_ON(buffer->user_data < alloc->vm_start); + BUG_ON(buffer->user_data > alloc->vm_start + alloc->buffer_size); =20 if (buffer->async_transaction) { alloc->free_async_space +=3D buffer_size; @@ -769,7 +769,7 @@ static struct page *binder_alloc_get_page(struct binder= _alloc *alloc, pgoff_t *pgoffp) { binder_size_t buffer_space_offset =3D buffer_offset + - (buffer->user_data - alloc->buffer); + (buffer->user_data - alloc->vm_start); pgoff_t pgoff =3D buffer_space_offset & ~PAGE_MASK; size_t index =3D buffer_space_offset >> PAGE_SHIFT; =20 @@ -868,7 +868,7 @@ int binder_alloc_mmap_handler(struct binder_alloc *allo= c, SZ_4M); mutex_unlock(&binder_alloc_mmap_lock); =20 - alloc->buffer =3D vma->vm_start; + alloc->vm_start =3D vma->vm_start; =20 alloc->pages =3D kvcalloc(alloc->buffer_size / PAGE_SIZE, sizeof(alloc->pages[0]), @@ -886,7 +886,7 @@ int binder_alloc_mmap_handler(struct binder_alloc *allo= c, goto err_alloc_buf_struct_failed; } =20 - buffer->user_data =3D alloc->buffer; + buffer->user_data =3D alloc->vm_start; list_add(&buffer->entry, &alloc->buffers); buffer->free =3D 1; binder_insert_free_buffer(alloc, buffer); @@ -901,7 +901,7 @@ int binder_alloc_mmap_handler(struct binder_alloc *allo= c, kvfree(alloc->pages); alloc->pages =3D NULL; err_alloc_pages_failed: - alloc->buffer =3D 0; + alloc->vm_start =3D 0; mutex_lock(&binder_alloc_mmap_lock); alloc->buffer_size =3D 0; err_already_mapped: @@ -1002,7 +1002,7 @@ void binder_alloc_print_allocated(struct seq_file *m, buffer =3D rb_entry(n, struct binder_buffer, rb_node); seq_printf(m, " buffer %d: %lx size %zd:%zd:%zd %s\n", buffer->debug_id, - buffer->user_data - alloc->buffer, + buffer->user_data - alloc->vm_start, buffer->data_size, buffer->offsets_size, buffer->extra_buffers_size, buffer->transaction ? "active" : "delivered"); @@ -1106,7 +1106,7 @@ enum lru_status binder_alloc_free_page(struct list_he= ad *item, goto err_get_alloc_mutex_failed; =20 index =3D page->index; - page_addr =3D alloc->buffer + index * PAGE_SIZE; + page_addr =3D alloc->vm_start + index * PAGE_SIZE; =20 vma =3D vma_lookup(mm, page_addr); /* ensure the vma corresponds to the binder mapping */ diff --git a/drivers/android/binder_alloc.h b/drivers/android/binder_alloc.h index 634bc2e03729..a6f26b1d8f5e 100644 --- a/drivers/android/binder_alloc.h +++ b/drivers/android/binder_alloc.h @@ -62,7 +62,7 @@ struct binder_buffer { * struct binder_alloc - per-binder proc state for binder allocator * @mutex: protects binder_alloc fields * @mm: copy of task->mm (invariant after open) - * @buffer: base of per-proc address space mapped via mmap + * @vm_start: base of per-proc address space mapped via mmap * @buffers: list of all buffers for this proc * @free_buffers: rb tree of buffers available for allocation * sorted by size @@ -86,7 +86,7 @@ struct binder_buffer { struct binder_alloc { struct mutex mutex; struct mm_struct *mm; - unsigned long buffer; + unsigned long vm_start; struct list_head buffers; struct rb_root free_buffers; struct rb_root allocated_buffers; diff --git a/drivers/android/binder_alloc_selftest.c b/drivers/android/bind= er_alloc_selftest.c index 2dda82d0d5e8..d2d086d2c037 100644 --- a/drivers/android/binder_alloc_selftest.c +++ b/drivers/android/binder_alloc_selftest.c @@ -104,7 +104,7 @@ static bool check_buffer_pages_allocated(struct binder_= alloc *alloc, end =3D PAGE_ALIGN(buffer->user_data + size); page_addr =3D buffer->user_data; for (; page_addr < end; page_addr +=3D PAGE_SIZE) { - page_index =3D (page_addr - alloc->buffer) / PAGE_SIZE; + page_index =3D (page_addr - alloc->vm_start) / PAGE_SIZE; if (!alloc->pages[page_index] || !list_empty(&alloc->pages[page_index]->lru)) { pr_err("expect alloc but is %s at page index %d\n", diff --git a/drivers/android/binder_trace.h b/drivers/android/binder_trace.h index fe38c6fc65d0..16de1b9e72f7 100644 --- a/drivers/android/binder_trace.h +++ b/drivers/android/binder_trace.h @@ -328,7 +328,7 @@ TRACE_EVENT(binder_update_page_range, TP_fast_assign( __entry->proc =3D alloc->pid; __entry->allocate =3D allocate; - __entry->offset =3D start - alloc->buffer; + __entry->offset =3D start - alloc->vm_start; __entry->size =3D end - start; ), TP_printk("proc=3D%d allocate=3D%d offset=3D%zu size=3D%zu", --=20 2.47.0.338.g60cca15819-goog