63953373c5
Changes in 4.9.263 ext4: handle error of ext4_setup_system_zone() on remount ext4: don't allow overlapping system zones ext4: check journal inode extents more carefully net: dsa: b53: Support setting learning on port ixgbe: check for Tx timestamp timeouts during watchdog ixgbe: prevent ptp_rx_hang from running when in FILTER_ALL mode btrfs: fix race when cloning extent buffer during rewind of an old root nvmet: don't check iosqes,iocqes for discovery controllers NFSD: Repair misuse of sv_lock in 5.10.16-rt30. svcrdma: disable timeouts on rdma backchannel sunrpc: fix refcount leak for rpc auth modules net/qrtr: fix __netdev_alloc_skb call scsi: lpfc: Fix some error codes in debugfs USB: replace hardcode maximum usb string length by definition usb: gadget: configfs: Fix KASAN use-after-free iio: adis16400: Fix an error code in adis16400_initial_setup() PCI: rpadlpar: Fix potential drc_name corruption in store functions perf/x86/intel: Fix a crash caused by zero PEBS status x86/ioapic: Ignore IRQ2 again kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data() x86: Move TS_COMPAT back to asm/thread_info.h x86: Introduce TS_COMPAT_RESTART to fix get_nr_restart_syscall() ext4: find old entry again if failed to rename whiteout ext4: fix potential error in ext4_do_update_inode genirq: Disable interrupts for force threaded handlers Linux 4.9.263 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I1be8f65e8275474e44ac3a61268bee7d3d33302b
118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
/* thread_info.h: common low-level thread information accessors
|
|
*
|
|
* Copyright (C) 2002 David Howells (dhowells@redhat.com)
|
|
* - Incorporating suggestions made by Linus Torvalds
|
|
*/
|
|
|
|
#ifndef _LINUX_THREAD_INFO_H
|
|
#define _LINUX_THREAD_INFO_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/bug.h>
|
|
#include <linux/restart_block.h>
|
|
#include <linux/errno.h>
|
|
|
|
struct timespec;
|
|
struct compat_timespec;
|
|
|
|
#ifdef CONFIG_THREAD_INFO_IN_TASK
|
|
/*
|
|
* For CONFIG_THREAD_INFO_IN_TASK kernels we need <asm/current.h> for the
|
|
* definition of current, but for !CONFIG_THREAD_INFO_IN_TASK kernels,
|
|
* including <asm/current.h> can cause a circular dependency on some platforms.
|
|
*/
|
|
#include <asm/current.h>
|
|
#define current_thread_info() ((struct thread_info *)current)
|
|
#endif
|
|
|
|
#include <linux/bitops.h>
|
|
#include <asm/thread_info.h>
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#ifndef arch_set_restart_data
|
|
#define arch_set_restart_data(restart) do { } while (0)
|
|
#endif
|
|
|
|
static inline long set_restart_fn(struct restart_block *restart,
|
|
long (*fn)(struct restart_block *))
|
|
{
|
|
restart->fn = fn;
|
|
arch_set_restart_data(restart);
|
|
return -ERESTART_RESTARTBLOCK;
|
|
}
|
|
|
|
#define THREADINFO_GFP (GFP_KERNEL_ACCOUNT | __GFP_NOTRACK | __GFP_ZERO)
|
|
|
|
/*
|
|
* flag set/clear/test wrappers
|
|
* - pass TIF_xxxx constants to these functions
|
|
*/
|
|
|
|
static inline void set_ti_thread_flag(struct thread_info *ti, int flag)
|
|
{
|
|
set_bit(flag, (unsigned long *)&ti->flags);
|
|
}
|
|
|
|
static inline void clear_ti_thread_flag(struct thread_info *ti, int flag)
|
|
{
|
|
clear_bit(flag, (unsigned long *)&ti->flags);
|
|
}
|
|
|
|
static inline int test_and_set_ti_thread_flag(struct thread_info *ti, int flag)
|
|
{
|
|
return test_and_set_bit(flag, (unsigned long *)&ti->flags);
|
|
}
|
|
|
|
static inline int test_and_clear_ti_thread_flag(struct thread_info *ti, int flag)
|
|
{
|
|
return test_and_clear_bit(flag, (unsigned long *)&ti->flags);
|
|
}
|
|
|
|
static inline int test_ti_thread_flag(struct thread_info *ti, int flag)
|
|
{
|
|
return test_bit(flag, (unsigned long *)&ti->flags);
|
|
}
|
|
|
|
#define set_thread_flag(flag) \
|
|
set_ti_thread_flag(current_thread_info(), flag)
|
|
#define clear_thread_flag(flag) \
|
|
clear_ti_thread_flag(current_thread_info(), flag)
|
|
#define test_and_set_thread_flag(flag) \
|
|
test_and_set_ti_thread_flag(current_thread_info(), flag)
|
|
#define test_and_clear_thread_flag(flag) \
|
|
test_and_clear_ti_thread_flag(current_thread_info(), flag)
|
|
#define test_thread_flag(flag) \
|
|
test_ti_thread_flag(current_thread_info(), flag)
|
|
|
|
#define tif_need_resched() test_thread_flag(TIF_NEED_RESCHED)
|
|
|
|
#ifndef CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES
|
|
static inline int arch_within_stack_frames(const void * const stack,
|
|
const void * const stackend,
|
|
const void *obj, unsigned long len)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_HARDENED_USERCOPY
|
|
extern void __check_object_size(const void *ptr, unsigned long n,
|
|
bool to_user);
|
|
|
|
static __always_inline void check_object_size(const void *ptr, unsigned long n,
|
|
bool to_user)
|
|
{
|
|
if (!__builtin_constant_p(n))
|
|
__check_object_size(ptr, n, to_user);
|
|
}
|
|
#else
|
|
static inline void check_object_size(const void *ptr, unsigned long n,
|
|
bool to_user)
|
|
{ }
|
|
#endif /* CONFIG_HARDENED_USERCOPY */
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _LINUX_THREAD_INFO_H */
|