luckfox-pico-sdk/sysdrv/source/kernel/include/linux/io_uring.h
luckfox-eng29 8f34c2760d project:build.sh: Added fastboot support; custom modifications to U-Boot and kernel implemented using patches.
project:cfg:BoardConfig_IPC: Added fastboot BoardConfig file and firmware post-scripts, distinguishing between
the BoardConfigs for Luckfox Pico Pro and Luckfox Pico Max. project:app: Added fastboot_client and rk_smart_door
for quick boot applications; updated rkipc app to adapt to the latest media library. media:samples: Added more
usage examples. media:rockit: Fixed bugs; removed support for retrieving data frames from VPSS. media:isp:
Updated rkaiq library and related tools to support connection to RKISP_Tuner. sysdrv:Makefile: Added support for
compiling drv_ko on Luckfox Pico Ultra W using Ubuntu; added support for custom root filesystem.
sysdrv:tools:board: Updated Buildroot optional mirror sources, updated some software versions, and stored device
tree files and configuration files that undergo multiple modifications for U-Boot and kernel separately.
sysdrv:source:mcu: Used RISC-V MCU SDK with RT-Thread system, mainly for initializing camera AE during quick
boot. sysdrv:source:uboot: Added support for fastboot; added high baud rate DDR bin for serial firmware upgrades.
sysdrv:source:kernel: Upgraded to version 5.10.160; increased NPU frequency for RV1106G3; added support for
fastboot.

Signed-off-by: luckfox-eng29 <eng29@luckfox.com>
2024-10-14 09:47:04 +08:00

107 lines
3.0 KiB
C

/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _LINUX_IO_URING_H
#define _LINUX_IO_URING_H
#include <linux/sched.h>
#include <linux/xarray.h>
#ifdef __GENKSYMS__
/*
* ANDROID ABI HACK
*
* In the 5.10.162 release, the io_uring code was synced with the version
* that is in the 5.15.y kernel tree in order to resolve a huge number of
* potential, and known, problems with the codebase. This makes for a more
* secure and easier-to-update-and-maintain 5.10.y kernel tree, so this is
* a great thing, however this caused some issues when it comes to the
* Android KABI preservation and checking tools.
*
* A number of the io_uring structures get used in other core kernel
* structures, only as "opaque" pointers, so there is not any real ABI
* breakage. But, due to the visibility of the structures going away, the
* CRC values of many scheduler variables and functions were changed.
*
* In order to preserve the CRC values, to prevent all device kernels to be
* forced to rebuild for no reason whatsoever from a functional point of
* view, we need to keep around the "old" io_uring structures for the CRC
* calculation only. This is done by the following definitions of struct
* io_identity and struct io_uring_task which will only be visible when the
* CRC calculation build happens, not in any functional kernel build.
*
* Yes, this all is a horrible hack, and these really are not the true
* structures that any code uses, but so life is in the world of stable
* apis...
* The real structures are in io_uring/io_uring.c, see the ones there if
* you need to touch or do anything with it.
*
* NEVER touch these structure definitions, they are fake and not valid code.
*/
struct io_identity {
struct files_struct *files;
struct mm_struct *mm;
#ifdef CONFIG_BLK_CGROUP
struct cgroup_subsys_state *blkcg_css;
#endif
const struct cred *creds;
struct nsproxy *nsproxy;
struct fs_struct *fs;
unsigned long fsize;
#ifdef CONFIG_AUDIT
kuid_t loginuid;
unsigned int sessionid;
#endif
refcount_t count;
};
struct io_uring_task {
/* submission side */
struct xarray xa;
struct wait_queue_head wait;
struct file *last;
struct percpu_counter inflight;
struct io_identity __identity;
struct io_identity *identity;
atomic_t in_idle;
bool sqpoll;
};
#endif /* ANDROID ABI HACK */
#if defined(CONFIG_IO_URING)
struct sock *io_uring_get_socket(struct file *file);
void __io_uring_cancel(bool cancel_all);
void __io_uring_free(struct task_struct *tsk);
static inline void io_uring_files_cancel(void)
{
if (current->io_uring)
__io_uring_cancel(false);
}
static inline void io_uring_task_cancel(void)
{
if (current->io_uring)
__io_uring_cancel(true);
}
static inline void io_uring_free(struct task_struct *tsk)
{
if (tsk->io_uring)
__io_uring_free(tsk);
}
#else
static inline struct sock *io_uring_get_socket(struct file *file)
{
return NULL;
}
static inline void io_uring_task_cancel(void)
{
}
static inline void io_uring_files_cancel(void)
{
}
static inline void io_uring_free(struct task_struct *tsk)
{
}
#endif
#endif