mirror of
https://github.com/commaai/agnos-kernel-sdm845.git
synced 2026-06-08 11:24:51 +08:00
aef17a58e8
Changes in 4.9.101
8139too: Use disable_irq_nosync() in rtl8139_poll_controller()
bridge: check iface upper dev when setting master via ioctl
dccp: fix tasklet usage
ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg
llc: better deal with too small mtu
net: ethernet: sun: niu set correct packet size in skb
net: ethernet: ti: cpsw: fix packet leaking in dual_mac mode
net/mlx4_en: Verify coalescing parameters are in range
net/mlx5: E-Switch, Include VF RDMA stats in vport statistics
net_sched: fq: take care of throttled flows before reuse
net: support compat 64-bit time in {s,g}etsockopt
openvswitch: Don't swap table in nlattr_set() after OVS_ATTR_NESTED is found
qmi_wwan: do not steal interfaces from class drivers
r8169: fix powering up RTL8168h
sctp: handle two v4 addrs comparison in sctp_inet6_cmp_addr
sctp: remove sctp_chunk_put from fail_mark err path in sctp_ulpevent_make_rcvmsg
sctp: use the old asoc when making the cookie-ack chunk in dupcook_d
tcp_bbr: fix to zero idle_restart only upon S/ACKed data
tg3: Fix vunmap() BUG_ON() triggered from tg3_free_consistent().
bonding: do not allow rlb updates to invalid mac
net/mlx5: Avoid cleaning flow steering table twice during error flow
bonding: send learning packets for vlans on slave
tcp: ignore Fast Open on repair mode
sctp: fix the issue that the cookie-ack with auth can't get processed
sctp: delay the authentication for the duplicated cookie-echo chunk
serial: sccnxp: Fix error handling in sccnxp_probe()
futex: Remove duplicated code and fix undefined behaviour
xfrm: fix xfrm_do_migrate() with AEAD e.g(AES-GCM)
lockd: lost rollback of set_grace_period() in lockd_down_net()
Revert "ARM: dts: imx6qdl-wandboard: Fix audio channel swap"
l2tp: revert "l2tp: fix missing print session offset info"
nfp: TX time stamp packets before HW doorbell is rung
proc: do not access cmdline nor environ from file-backed areas
futex: futex_wake_op, fix sign_extend32 sign bits
kernel/exit.c: avoid undefined behaviour when calling wait4()
Linux 4.9.101
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
129 lines
3.0 KiB
C
129 lines
3.0 KiB
C
/*
|
|
* Copyright (C) 2012 ARM Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#ifndef __ASM_FUTEX_H
|
|
#define __ASM_FUTEX_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/futex.h>
|
|
#include <linux/uaccess.h>
|
|
|
|
#include <asm/errno.h>
|
|
|
|
#define __futex_atomic_op(insn, ret, oldval, uaddr, tmp, oparg) \
|
|
do { \
|
|
uaccess_enable(); \
|
|
asm volatile( \
|
|
" prfm pstl1strm, %2\n" \
|
|
"1: ldxr %w1, %2\n" \
|
|
insn "\n" \
|
|
"2: stlxr %w3, %w0, %2\n" \
|
|
" cbnz %w3, 1b\n" \
|
|
" dmb ish\n" \
|
|
"3:\n" \
|
|
" .pushsection .fixup,\"ax\"\n" \
|
|
" .align 2\n" \
|
|
"4: mov %w0, %w5\n" \
|
|
" b 3b\n" \
|
|
" .popsection\n" \
|
|
_ASM_EXTABLE(1b, 4b) \
|
|
_ASM_EXTABLE(2b, 4b) \
|
|
: "=&r" (ret), "=&r" (oldval), "+Q" (*uaddr), "=&r" (tmp) \
|
|
: "r" (oparg), "Ir" (-EFAULT) \
|
|
: "memory"); \
|
|
uaccess_disable(); \
|
|
} while (0)
|
|
|
|
static inline int
|
|
arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr)
|
|
{
|
|
int oldval = 0, ret, tmp;
|
|
|
|
pagefault_disable();
|
|
|
|
switch (op) {
|
|
case FUTEX_OP_SET:
|
|
__futex_atomic_op("mov %w0, %w4",
|
|
ret, oldval, uaddr, tmp, oparg);
|
|
break;
|
|
case FUTEX_OP_ADD:
|
|
__futex_atomic_op("add %w0, %w1, %w4",
|
|
ret, oldval, uaddr, tmp, oparg);
|
|
break;
|
|
case FUTEX_OP_OR:
|
|
__futex_atomic_op("orr %w0, %w1, %w4",
|
|
ret, oldval, uaddr, tmp, oparg);
|
|
break;
|
|
case FUTEX_OP_ANDN:
|
|
__futex_atomic_op("and %w0, %w1, %w4",
|
|
ret, oldval, uaddr, tmp, ~oparg);
|
|
break;
|
|
case FUTEX_OP_XOR:
|
|
__futex_atomic_op("eor %w0, %w1, %w4",
|
|
ret, oldval, uaddr, tmp, oparg);
|
|
break;
|
|
default:
|
|
ret = -ENOSYS;
|
|
}
|
|
|
|
pagefault_enable();
|
|
|
|
if (!ret)
|
|
*oval = oldval;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline int
|
|
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *_uaddr,
|
|
u32 oldval, u32 newval)
|
|
{
|
|
int ret = 0;
|
|
u32 val, tmp;
|
|
u32 __user *uaddr;
|
|
|
|
if (!access_ok(VERIFY_WRITE, _uaddr, sizeof(u32)))
|
|
return -EFAULT;
|
|
|
|
uaddr = __uaccess_mask_ptr(_uaddr);
|
|
uaccess_enable();
|
|
asm volatile("// futex_atomic_cmpxchg_inatomic\n"
|
|
" prfm pstl1strm, %2\n"
|
|
"1: ldxr %w1, %2\n"
|
|
" sub %w3, %w1, %w4\n"
|
|
" cbnz %w3, 3f\n"
|
|
"2: stlxr %w3, %w5, %2\n"
|
|
" cbnz %w3, 1b\n"
|
|
" dmb ish\n"
|
|
"3:\n"
|
|
" .pushsection .fixup,\"ax\"\n"
|
|
"4: mov %w0, %w6\n"
|
|
" b 3b\n"
|
|
" .popsection\n"
|
|
_ASM_EXTABLE(1b, 4b)
|
|
_ASM_EXTABLE(2b, 4b)
|
|
: "+r" (ret), "=&r" (val), "+Q" (*uaddr), "=&r" (tmp)
|
|
: "r" (oldval), "r" (newval), "Ir" (-EFAULT)
|
|
: "memory");
|
|
uaccess_disable();
|
|
|
|
*uval = val;
|
|
return ret;
|
|
}
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* __ASM_FUTEX_H */
|