52afbbbc98
(1) Masquerade clv
(2) Fix timeout
(3) Let mcexec thread with the same tid as McKernel thread migrating
to Linux handles the migration request
(4) Call create_tracer() before creating proxy related objects
Change-Id: I6b2689b70db49827f10aa7d5a4c581aa81319b55
170 lines
4.3 KiB
C
170 lines
4.3 KiB
C
/* futex.h COPYRIGHT FUJITSU LIMITED 2015-2016 */
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/**
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* \file futex.h
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* Licence details are found in the file LICENSE.
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*
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* \brief
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* Futex adaptation to McKernel
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*
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* \author Balazs Gerofi <bgerofi@riken.jp> \par
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* Copyright (C) 2012 RIKEN AICS
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*
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*
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* HISTORY:
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*
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*/
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#ifndef _FUTEX_H
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#define _FUTEX_H
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/** \name Futex Commands
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* @{
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*/
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#define FUTEX_WAIT 0
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#define FUTEX_WAKE 1
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#define FUTEX_FD 2
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#define FUTEX_REQUEUE 3
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#define FUTEX_CMP_REQUEUE 4
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#define FUTEX_WAKE_OP 5
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#define FUTEX_LOCK_PI 6
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#define FUTEX_UNLOCK_PI 7
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#define FUTEX_TRYLOCK_PI 8
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#define FUTEX_WAIT_BITSET 9
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#define FUTEX_WAKE_BITSET 10
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#define FUTEX_WAIT_REQUEUE_PI 11
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#define FUTEX_CMP_REQUEUE_PI 12
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// @}
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#define FUTEX_PRIVATE_FLAG 128
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#define FUTEX_CLOCK_REALTIME 256
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#define FUTEX_CMD_MASK ~(FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME)
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#define FUTEX_WAIT_PRIVATE (FUTEX_WAIT | FUTEX_PRIVATE_FLAG)
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#define FUTEX_WAKE_PRIVATE (FUTEX_WAKE | FUTEX_PRIVATE_FLAG)
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#define FUTEX_REQUEUE_PRIVATE (FUTEX_REQUEUE | FUTEX_PRIVATE_FLAG)
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#define FUTEX_CMP_REQUEUE_PRIVATE (FUTEX_CMP_REQUEUE | FUTEX_PRIVATE_FLAG)
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#define FUTEX_WAKE_OP_PRIVATE (FUTEX_WAKE_OP | FUTEX_PRIVATE_FLAG)
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#define FUTEX_LOCK_PI_PRIVATE (FUTEX_LOCK_PI | FUTEX_PRIVATE_FLAG)
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#define FUTEX_UNLOCK_PI_PRIVATE (FUTEX_UNLOCK_PI | FUTEX_PRIVATE_FLAG)
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#define FUTEX_TRYLOCK_PI_PRIVATE (FUTEX_TRYLOCK_PI | FUTEX_PRIVATE_FLAG)
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#define FUTEX_WAIT_BITSET_PRIVATE (FUTEX_WAIT_BITSET | FUTEX_PRIVATE_FLAG)
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#define FUTEX_WAKE_BITSET_PRIVATE (FUTEX_WAKE_BITSET | FUTEX_PRIVATE_FLAG)
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#define FUTEX_WAIT_REQUEUE_PI_PRIVATE (FUTEX_WAIT_REQUEUE_PI | \
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FUTEX_PRIVATE_FLAG)
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#define FUTEX_CMP_REQUEUE_PI_PRIVATE (FUTEX_CMP_REQUEUE_PI | \
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FUTEX_PRIVATE_FLAG)
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/** \name Futex Operations, used for FUTEX_WAKE_OP
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* @{
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*/
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#define FUTEX_OP_SET 0 /* *(int *)UADDR2 = OPARG; */
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#define FUTEX_OP_ADD 1 /* *(int *)UADDR2 += OPARG; */
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#define FUTEX_OP_OR 2 /* *(int *)UADDR2 |= OPARG; */
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#define FUTEX_OP_ANDN 3 /* *(int *)UADDR2 &= ~OPARG; */
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#define FUTEX_OP_XOR 4 /* *(int *)UADDR2 ^= OPARG; */
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#define FUTEX_OP_OPARG_SHIFT 8U /* Use (1 << OPARG) instead of OPARG. */
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#define FUTEX_OP_CMP_EQ 0 /* if (oldval == CMPARG) wake */
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#define FUTEX_OP_CMP_NE 1 /* if (oldval != CMPARG) wake */
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#define FUTEX_OP_CMP_LT 2 /* if (oldval < CMPARG) wake */
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#define FUTEX_OP_CMP_LE 3 /* if (oldval <= CMPARG) wake */
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#define FUTEX_OP_CMP_GT 4 /* if (oldval > CMPARG) wake */
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#define FUTEX_OP_CMP_GE 5 /* if (oldval >= CMPARG) wake */
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// @}
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/* FUTEX_WAKE_OP will perform atomically
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int oldval = *(int *)UADDR2;
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*(int *)UADDR2 = oldval OP OPARG;
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if (oldval CMP CMPARG)
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wake UADDR2; */
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#define FUTEX_OP(op, oparg, cmp, cmparg) \
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(((op & 0xf) << 28) | ((cmp & 0xf) << 24) \
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| ((oparg & 0xfff) << 12) | (cmparg & 0xfff))
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/*
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* bitset with all bits set for the FUTEX_xxx_BITSET OPs to request a
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* match of any bit.
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*/
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#define FUTEX_BITSET_MATCH_ANY 0xffffffff
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#ifdef __KERNEL__
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#include <ihk/lock.h>
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#include <list.h>
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#include <process.h>
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#include <waitq.h>
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#ifndef _ASM_X86_FUTEX_H
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#define _ASM_X86_FUTEX_H
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#ifdef __KERNEL__
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#define __user
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/* We don't deal with uaccess at the moment, because x86 can access
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* userspace directly, we rely on glibc and the app developers.
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*/
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#ifdef __UACCESS__
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#include <arch/uaccess.h>
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#endif
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#include <errno.h>
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#include <arch-futex.h>
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#if 0
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#include <arch/processor.h>
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#include <arch/system.h>
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#endif
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#endif // __KERNEL__
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#endif // _ASM_X86_FUTEX_H
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#define FUTEX_HASHBITS 8 /* 256 entries in each futex hash tbl */
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#define FUT_OFF_INODE 1 /* We set bit 0 if key has a reference on inode */
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#define FUT_OFF_MMSHARED 2 /* We set bit 1 if key has a reference on mm */
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struct process_vm;
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union futex_key {
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struct {
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unsigned long pgoff;
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void *phys;
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int offset;
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} shared;
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struct {
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unsigned long address;
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struct process_vm *mm;
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int offset;
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} private;
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struct {
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unsigned long word;
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void *ptr;
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int offset;
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} both;
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};
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#define FUTEX_KEY_INIT (union futex_key) { .both = { .ptr = NULL } }
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#define FUT_OFF_MMSHARED 2
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extern int futex_init(void);
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struct cpu_local_var;
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extern int
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futex(
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uint32_t __user * uaddr,
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int op,
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uint32_t val,
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uint64_t timeout,
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uint32_t __user * uaddr2,
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uint32_t val2,
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uint32_t val3,
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int fshared,
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struct cpu_local_var *clv_override
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);
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#endif
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#endif
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