From aeb709c767aeca996e6011133e4f7bdb2a4af652 Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov Date: Wed, 30 Sep 2026 09:59:20 +0000 Subject: selftests/bpf: Add a test for objects stuck in free_by_rcu_ttrace Delete all elements of BPF_F_NO_PREALLOC hash map in one batch. The first free_bulk() starts RCU tasks trace GP and the rest of the elements are freed while it's in flight. Wait for call_rcu_ttrace_in_progress to clear in bpf_mem_cache of every cpu and check that free_by_rcu_ttrace and waiting_for_gp_ttrace lists are empty. Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20260930095920.601738-4-alexei.starovoitov@gmail.com Signed-off-by: Kumar Kartikeya Dwivedi --- drivers/android/binder_trace.h | 448 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 448 insertions(+) create mode 100644 drivers/android/binder_trace.h (limited to 'drivers/android/binder_trace.h') diff --git a/drivers/android/binder_trace.h b/drivers/android/binder_trace.h new file mode 100644 index 000000000..fa5eb61cf --- /dev/null +++ b/drivers/android/binder_trace.h @@ -0,0 +1,448 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2012 Google, Inc. + */ + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM binder + +#if !defined(_BINDER_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) +#define _BINDER_TRACE_H + +#include + +struct binder_buffer; +struct binder_node; +struct binder_proc; +struct binder_alloc; +struct binder_ref_data; +struct binder_thread; +struct binder_transaction; + +TRACE_EVENT(binder_ioctl, + TP_PROTO(unsigned int cmd, unsigned long arg), + TP_ARGS(cmd, arg), + + TP_STRUCT__entry( + __field(unsigned int, cmd) + __field(unsigned long, arg) + ), + TP_fast_assign( + __entry->cmd = cmd; + __entry->arg = arg; + ), + TP_printk("cmd=0x%x arg=0x%lx", __entry->cmd, __entry->arg) +); + +DECLARE_EVENT_CLASS(binder_function_return_class, + TP_PROTO(int ret), + TP_ARGS(ret), + TP_STRUCT__entry( + __field(int, ret) + ), + TP_fast_assign( + __entry->ret = ret; + ), + TP_printk("ret=%d", __entry->ret) +); + +#define DEFINE_BINDER_FUNCTION_RETURN_EVENT(name) \ +DEFINE_EVENT(binder_function_return_class, name, \ + TP_PROTO(int ret), \ + TP_ARGS(ret)) + +DEFINE_BINDER_FUNCTION_RETURN_EVENT(binder_ioctl_done); +DEFINE_BINDER_FUNCTION_RETURN_EVENT(binder_write_done); +DEFINE_BINDER_FUNCTION_RETURN_EVENT(binder_read_done); + +TRACE_EVENT(binder_wait_for_work, + TP_PROTO(bool proc_work, bool transaction_stack, bool thread_todo), + TP_ARGS(proc_work, transaction_stack, thread_todo), + + TP_STRUCT__entry( + __field(bool, proc_work) + __field(bool, transaction_stack) + __field(bool, thread_todo) + ), + TP_fast_assign( + __entry->proc_work = proc_work; + __entry->transaction_stack = transaction_stack; + __entry->thread_todo = thread_todo; + ), + TP_printk("proc_work=%d transaction_stack=%d thread_todo=%d", + __entry->proc_work, __entry->transaction_stack, + __entry->thread_todo) +); + +TRACE_EVENT(binder_txn_latency_free, + TP_PROTO(struct binder_transaction *t, + int from_proc, int from_thread, + int to_proc, int to_thread), + TP_ARGS(t, from_proc, from_thread, to_proc, to_thread), + TP_STRUCT__entry( + __field(int, debug_id) + __field(int, from_proc) + __field(int, from_thread) + __field(int, to_proc) + __field(int, to_thread) + __field(unsigned int, code) + __field(unsigned int, flags) + ), + TP_fast_assign( + __entry->debug_id = t->debug_id; + __entry->from_proc = from_proc; + __entry->from_thread = from_thread; + __entry->to_proc = to_proc; + __entry->to_thread = to_thread; + __entry->code = t->code; + __entry->flags = t->flags; + ), + TP_printk("transaction=%d from %d:%d to %d:%d flags=0x%x code=0x%x", + __entry->debug_id, __entry->from_proc, __entry->from_thread, + __entry->to_proc, __entry->to_thread, __entry->code, + __entry->flags) +); + +TRACE_EVENT(binder_transaction, + TP_PROTO(bool reply, struct binder_transaction *t, + struct binder_node *target_node), + TP_ARGS(reply, t, target_node), + TP_STRUCT__entry( + __field(int, debug_id) + __field(int, target_node) + __field(int, to_proc) + __field(int, to_thread) + __field(int, reply) + __field(unsigned int, code) + __field(unsigned int, flags) + ), + TP_fast_assign( + __entry->debug_id = t->debug_id; + __entry->target_node = target_node ? target_node->debug_id : 0; + __entry->to_proc = t->to_proc->pid; + __entry->to_thread = t->to_thread ? t->to_thread->pid : 0; + __entry->reply = reply; + __entry->code = t->code; + __entry->flags = t->flags; + ), + TP_printk("transaction=%d dest_node=%d dest_proc=%d dest_thread=%d reply=%d flags=0x%x code=0x%x", + __entry->debug_id, __entry->target_node, + __entry->to_proc, __entry->to_thread, + __entry->reply, __entry->flags, __entry->code) +); + +TRACE_EVENT(binder_transaction_received, + TP_PROTO(struct binder_transaction *t), + TP_ARGS(t), + + TP_STRUCT__entry( + __field(int, debug_id) + ), + TP_fast_assign( + __entry->debug_id = t->debug_id; + ), + TP_printk("transaction=%d", __entry->debug_id) +); + +TRACE_EVENT(binder_transaction_node_to_ref, + TP_PROTO(struct binder_transaction *t, struct binder_node *node, + struct binder_ref_data *rdata), + TP_ARGS(t, node, rdata), + + TP_STRUCT__entry( + __field(int, debug_id) + __field(int, node_debug_id) + __field(binder_uintptr_t, node_ptr) + __field(int, ref_debug_id) + __field(uint32_t, ref_desc) + ), + TP_fast_assign( + __entry->debug_id = t->debug_id; + __entry->node_debug_id = node->debug_id; + __entry->node_ptr = node->ptr; + __entry->ref_debug_id = rdata->debug_id; + __entry->ref_desc = rdata->desc; + ), + TP_printk("transaction=%d node=%d src_ptr=0x%016llx ==> dest_ref=%d dest_desc=%d", + __entry->debug_id, __entry->node_debug_id, + (u64)__entry->node_ptr, + __entry->ref_debug_id, __entry->ref_desc) +); + +TRACE_EVENT(binder_transaction_ref_to_node, + TP_PROTO(struct binder_transaction *t, struct binder_node *node, + struct binder_ref_data *rdata), + TP_ARGS(t, node, rdata), + + TP_STRUCT__entry( + __field(int, debug_id) + __field(int, ref_debug_id) + __field(uint32_t, ref_desc) + __field(int, node_debug_id) + __field(binder_uintptr_t, node_ptr) + ), + TP_fast_assign( + __entry->debug_id = t->debug_id; + __entry->ref_debug_id = rdata->debug_id; + __entry->ref_desc = rdata->desc; + __entry->node_debug_id = node->debug_id; + __entry->node_ptr = node->ptr; + ), + TP_printk("transaction=%d node=%d src_ref=%d src_desc=%d ==> dest_ptr=0x%016llx", + __entry->debug_id, __entry->node_debug_id, + __entry->ref_debug_id, __entry->ref_desc, + (u64)__entry->node_ptr) +); + +TRACE_EVENT(binder_transaction_ref_to_ref, + TP_PROTO(struct binder_transaction *t, struct binder_node *node, + struct binder_ref_data *src_ref, + struct binder_ref_data *dest_ref), + TP_ARGS(t, node, src_ref, dest_ref), + + TP_STRUCT__entry( + __field(int, debug_id) + __field(int, node_debug_id) + __field(int, src_ref_debug_id) + __field(uint32_t, src_ref_desc) + __field(int, dest_ref_debug_id) + __field(uint32_t, dest_ref_desc) + ), + TP_fast_assign( + __entry->debug_id = t->debug_id; + __entry->node_debug_id = node->debug_id; + __entry->src_ref_debug_id = src_ref->debug_id; + __entry->src_ref_desc = src_ref->desc; + __entry->dest_ref_debug_id = dest_ref->debug_id; + __entry->dest_ref_desc = dest_ref->desc; + ), + TP_printk("transaction=%d node=%d src_ref=%d src_desc=%d ==> dest_ref=%d dest_desc=%d", + __entry->debug_id, __entry->node_debug_id, + __entry->src_ref_debug_id, __entry->src_ref_desc, + __entry->dest_ref_debug_id, __entry->dest_ref_desc) +); + +TRACE_EVENT(binder_transaction_fd_send, + TP_PROTO(struct binder_transaction *t, int fd, size_t offset), + TP_ARGS(t, fd, offset), + + TP_STRUCT__entry( + __field(int, debug_id) + __field(int, fd) + __field(size_t, offset) + ), + TP_fast_assign( + __entry->debug_id = t->debug_id; + __entry->fd = fd; + __entry->offset = offset; + ), + TP_printk("transaction=%d src_fd=%d offset=%zu", + __entry->debug_id, __entry->fd, __entry->offset) +); + +TRACE_EVENT(binder_transaction_fd_recv, + TP_PROTO(struct binder_transaction *t, int fd, size_t offset), + TP_ARGS(t, fd, offset), + + TP_STRUCT__entry( + __field(int, debug_id) + __field(int, fd) + __field(size_t, offset) + ), + TP_fast_assign( + __entry->debug_id = t->debug_id; + __entry->fd = fd; + __entry->offset = offset; + ), + TP_printk("transaction=%d dest_fd=%d offset=%zu", + __entry->debug_id, __entry->fd, __entry->offset) +); + +DECLARE_EVENT_CLASS(binder_buffer_class, + TP_PROTO(struct binder_buffer *buf), + TP_ARGS(buf), + TP_STRUCT__entry( + __field(int, debug_id) + __field(size_t, data_size) + __field(size_t, offsets_size) + __field(size_t, extra_buffers_size) + ), + TP_fast_assign( + __entry->debug_id = buf->debug_id; + __entry->data_size = buf->data_size; + __entry->offsets_size = buf->offsets_size; + __entry->extra_buffers_size = buf->extra_buffers_size; + ), + TP_printk("transaction=%d data_size=%zd offsets_size=%zd extra_buffers_size=%zd", + __entry->debug_id, __entry->data_size, __entry->offsets_size, + __entry->extra_buffers_size) +); + +DEFINE_EVENT(binder_buffer_class, binder_transaction_alloc_buf, + TP_PROTO(struct binder_buffer *buffer), + TP_ARGS(buffer)); + +DEFINE_EVENT(binder_buffer_class, binder_transaction_buffer_release, + TP_PROTO(struct binder_buffer *buffer), + TP_ARGS(buffer)); + +DEFINE_EVENT(binder_buffer_class, binder_transaction_failed_buffer_release, + TP_PROTO(struct binder_buffer *buffer), + TP_ARGS(buffer)); + +DEFINE_EVENT(binder_buffer_class, binder_transaction_update_buffer_release, + TP_PROTO(struct binder_buffer *buffer), + TP_ARGS(buffer)); + +TRACE_EVENT(binder_update_page_range, + TP_PROTO(struct binder_alloc *alloc, bool allocate, + unsigned long start, unsigned long end), + TP_ARGS(alloc, allocate, start, end), + TP_STRUCT__entry( + __field(int, proc) + __field(bool, allocate) + __field(size_t, offset) + __field(size_t, size) + ), + TP_fast_assign( + __entry->proc = alloc->pid; + __entry->allocate = allocate; + __entry->offset = start - alloc->vm_start; + __entry->size = end - start; + ), + TP_printk("proc=%d allocate=%d offset=%zu size=%zu", + __entry->proc, __entry->allocate, + __entry->offset, __entry->size) +); + +DECLARE_EVENT_CLASS(binder_lru_page_class, + TP_PROTO(const struct binder_alloc *alloc, size_t page_index), + TP_ARGS(alloc, page_index), + TP_STRUCT__entry( + __field(int, proc) + __field(size_t, page_index) + ), + TP_fast_assign( + __entry->proc = alloc->pid; + __entry->page_index = page_index; + ), + TP_printk("proc=%d page_index=%zu", + __entry->proc, __entry->page_index) +); + +DEFINE_EVENT(binder_lru_page_class, binder_alloc_lru_start, + TP_PROTO(const struct binder_alloc *alloc, size_t page_index), + TP_ARGS(alloc, page_index)); + +DEFINE_EVENT(binder_lru_page_class, binder_alloc_lru_end, + TP_PROTO(const struct binder_alloc *alloc, size_t page_index), + TP_ARGS(alloc, page_index)); + +DEFINE_EVENT(binder_lru_page_class, binder_free_lru_start, + TP_PROTO(const struct binder_alloc *alloc, size_t page_index), + TP_ARGS(alloc, page_index)); + +DEFINE_EVENT(binder_lru_page_class, binder_free_lru_end, + TP_PROTO(const struct binder_alloc *alloc, size_t page_index), + TP_ARGS(alloc, page_index)); + +DEFINE_EVENT(binder_lru_page_class, binder_alloc_page_start, + TP_PROTO(const struct binder_alloc *alloc, size_t page_index), + TP_ARGS(alloc, page_index)); + +DEFINE_EVENT(binder_lru_page_class, binder_alloc_page_end, + TP_PROTO(const struct binder_alloc *alloc, size_t page_index), + TP_ARGS(alloc, page_index)); + +DEFINE_EVENT(binder_lru_page_class, binder_unmap_user_start, + TP_PROTO(const struct binder_alloc *alloc, size_t page_index), + TP_ARGS(alloc, page_index)); + +DEFINE_EVENT(binder_lru_page_class, binder_unmap_user_end, + TP_PROTO(const struct binder_alloc *alloc, size_t page_index), + TP_ARGS(alloc, page_index)); + +DEFINE_EVENT(binder_lru_page_class, binder_unmap_kernel_start, + TP_PROTO(const struct binder_alloc *alloc, size_t page_index), + TP_ARGS(alloc, page_index)); + +DEFINE_EVENT(binder_lru_page_class, binder_unmap_kernel_end, + TP_PROTO(const struct binder_alloc *alloc, size_t page_index), + TP_ARGS(alloc, page_index)); + +TRACE_EVENT(binder_command, + TP_PROTO(uint32_t cmd), + TP_ARGS(cmd), + TP_STRUCT__entry( + __field(uint32_t, cmd) + ), + TP_fast_assign( + __entry->cmd = cmd; + ), + TP_printk("cmd=0x%x %s", + __entry->cmd, + _IOC_NR(__entry->cmd) < ARRAY_SIZE(binder_command_strings) ? + binder_command_strings[_IOC_NR(__entry->cmd)] : + "unknown") +); + +TRACE_EVENT(binder_return, + TP_PROTO(uint32_t cmd), + TP_ARGS(cmd), + TP_STRUCT__entry( + __field(uint32_t, cmd) + ), + TP_fast_assign( + __entry->cmd = cmd; + ), + TP_printk("cmd=0x%x %s", + __entry->cmd, + _IOC_NR(__entry->cmd) < ARRAY_SIZE(binder_return_strings) ? + binder_return_strings[_IOC_NR(__entry->cmd)] : + "unknown") +); + +TRACE_EVENT(binder_netlink_report, + TP_PROTO(const char *context, + struct binder_transaction *t, + u32 data_size, + u32 error), + TP_ARGS(context, t, data_size, error), + TP_STRUCT__entry( + __field(const char *, context) + __field(u32, error) + __field(int, from_pid) + __field(int, from_tid) + __field(int, to_pid) + __field(int, to_tid) + __field(bool, is_reply) + __field(unsigned int, flags) + __field(unsigned int, code) + __field(size_t, data_size) + ), + TP_fast_assign( + __entry->context = context; + __entry->error = error; + __entry->from_pid = t->from_pid; + __entry->from_tid = t->from_tid; + __entry->to_pid = t->to_proc ? t->to_proc->pid : 0; + __entry->to_tid = t->to_thread ? t->to_thread->pid : 0; + __entry->is_reply = t->is_reply; + __entry->flags = t->flags; + __entry->code = t->code; + __entry->data_size = data_size; + ), + TP_printk("from %d:%d to %d:%d context=%s error=%d is_reply=%d flags=0x%x code=0x%x size=%zu", + __entry->from_pid, __entry->from_tid, + __entry->to_pid, __entry->to_tid, + __entry->context, __entry->error, __entry->is_reply, + __entry->flags, __entry->code, __entry->data_size) +); + +#endif /* _BINDER_TRACE_H */ + +#undef TRACE_INCLUDE_PATH +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_PATH . +#define TRACE_INCLUDE_FILE binder_trace +#include -- cgit v1.3.1