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/usb/host/xhci-debugfs.h | 143 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 143 insertions(+) create mode 100644 drivers/usb/host/xhci-debugfs.h (limited to 'drivers/usb/host/xhci-debugfs.h') diff --git a/drivers/usb/host/xhci-debugfs.h b/drivers/usb/host/xhci-debugfs.h new file mode 100644 index 000000000..7c074b4be --- /dev/null +++ b/drivers/usb/host/xhci-debugfs.h @@ -0,0 +1,143 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * xhci-debugfs.h - xHCI debugfs interface + * + * Copyright (C) 2017 Intel Corporation + * + * Author: Lu Baolu + */ + +#ifndef __LINUX_XHCI_DEBUGFS_H +#define __LINUX_XHCI_DEBUGFS_H + +#include + +#define DEBUGFS_NAMELEN 32 + +#define REG_CAPLENGTH 0x00 +#define REG_HCSPARAMS1 0x04 +#define REG_HCSPARAMS2 0x08 +#define REG_HCSPARAMS3 0x0c +#define REG_HCCPARAMS1 0x10 +#define REG_DOORBELLOFF 0x14 +#define REG_RUNTIMEOFF 0x18 +#define REG_HCCPARAMS2 0x1c + +#define REG_USBCMD 0x00 +#define REG_USBSTS 0x04 +#define REG_PAGESIZE 0x08 +#define REG_DNCTRL 0x14 +#define REG_CRCR 0x18 +#define REG_DCBAAP_LOW 0x30 +#define REG_DCBAAP_HIGH 0x34 +#define REG_CONFIG 0x38 + +#define REG_MFINDEX 0x00 +#define REG_IR0_IMAN 0x20 +#define REG_IR0_IMOD 0x24 +#define REG_IR0_ERSTSZ 0x28 +#define REG_IR0_ERSTBA_LOW 0x30 +#define REG_IR0_ERSTBA_HIGH 0x34 +#define REG_IR0_ERDP_LOW 0x38 +#define REG_IR0_ERDP_HIGH 0x3c + +#define REG_EXTCAP_USBLEGSUP 0x00 +#define REG_EXTCAP_USBLEGCTLSTS 0x04 + +#define REG_EXTCAP_REVISION 0x00 +#define REG_EXTCAP_NAME 0x04 +#define REG_EXTCAP_PORTINFO 0x08 +#define REG_EXTCAP_PORTTYPE 0x0c +#define REG_EXTCAP_MANTISSA1 0x10 +#define REG_EXTCAP_MANTISSA2 0x14 +#define REG_EXTCAP_MANTISSA3 0x18 +#define REG_EXTCAP_MANTISSA4 0x1c +#define REG_EXTCAP_MANTISSA5 0x20 +#define REG_EXTCAP_MANTISSA6 0x24 + +#define REG_EXTCAP_DBC_CAPABILITY 0x00 +#define REG_EXTCAP_DBC_DOORBELL 0x04 +#define REG_EXTCAP_DBC_ERSTSIZE 0x08 +#define REG_EXTCAP_DBC_ERST_LOW 0x10 +#define REG_EXTCAP_DBC_ERST_HIGH 0x14 +#define REG_EXTCAP_DBC_ERDP_LOW 0x18 +#define REG_EXTCAP_DBC_ERDP_HIGH 0x1c +#define REG_EXTCAP_DBC_CONTROL 0x20 +#define REG_EXTCAP_DBC_STATUS 0x24 +#define REG_EXTCAP_DBC_PORTSC 0x28 +#define REG_EXTCAP_DBC_CONT_LOW 0x30 +#define REG_EXTCAP_DBC_CONT_HIGH 0x34 +#define REG_EXTCAP_DBC_DEVINFO1 0x38 +#define REG_EXTCAP_DBC_DEVINFO2 0x3c + +#define dump_register(nm) \ +{ \ + .name = __stringify(nm), \ + .offset = REG_ ##nm, \ +} + +struct xhci_regset { + char name[DEBUGFS_NAMELEN]; + struct debugfs_regset32 regset; + size_t nregs; + struct list_head list; +}; + +struct xhci_file_map { + const char *name; + int (*show)(struct seq_file *s, void *unused); +}; + +struct xhci_ep_priv { + char name[DEBUGFS_NAMELEN]; + struct dentry *root; + struct xhci_stream_info *stream_info; + struct xhci_ring *show_ring; + unsigned int stream_id; +}; + +struct xhci_slot_priv { + char name[DEBUGFS_NAMELEN]; + struct dentry *root; + struct xhci_ep_priv *eps[31]; + struct xhci_virt_device *dev; +}; + +#ifdef CONFIG_DEBUG_FS +void xhci_debugfs_init(struct xhci_hcd *xhci); +void xhci_debugfs_exit(struct xhci_hcd *xhci); +void __init xhci_debugfs_create_root(void); +void __exit xhci_debugfs_remove_root(void); +void xhci_debugfs_create_slot(struct xhci_hcd *xhci, int slot_id); +void xhci_debugfs_remove_slot(struct xhci_hcd *xhci, int slot_id); +void xhci_debugfs_create_endpoint(struct xhci_hcd *xhci, + struct xhci_virt_device *virt_dev, + int ep_index); +void xhci_debugfs_remove_endpoint(struct xhci_hcd *xhci, + struct xhci_virt_device *virt_dev, + int ep_index); +void xhci_debugfs_create_stream_files(struct xhci_hcd *xhci, + struct xhci_virt_device *virt_dev, + int ep_index); +#else +static inline void xhci_debugfs_init(struct xhci_hcd *xhci) { } +static inline void xhci_debugfs_exit(struct xhci_hcd *xhci) { } +static inline void __init xhci_debugfs_create_root(void) { } +static inline void __exit xhci_debugfs_remove_root(void) { } +static inline void xhci_debugfs_create_slot(struct xhci_hcd *x, int s) { } +static inline void xhci_debugfs_remove_slot(struct xhci_hcd *x, int s) { } +static inline void +xhci_debugfs_create_endpoint(struct xhci_hcd *xhci, + struct xhci_virt_device *virt_dev, + int ep_index) { } +static inline void +xhci_debugfs_remove_endpoint(struct xhci_hcd *xhci, + struct xhci_virt_device *virt_dev, + int ep_index) { } +static inline void +xhci_debugfs_create_stream_files(struct xhci_hcd *xhci, + struct xhci_virt_device *virt_dev, + int ep_index) { } +#endif /* CONFIG_DEBUG_FS */ + +#endif /* __LINUX_XHCI_DEBUGFS_H */ -- cgit v1.3.1