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1e4ee5135d
Add initial symmetric multi-processing (SMP) support to UML. With this support enabled, users can tell UML to start multiple virtual processors, each represented as a separate host thread. In UML, kthreads and normal threads (when running in kernel mode) can be scheduled and executed simultaneously on different virtual processors. However, the userspace code of normal threads still runs within their respective single-threaded stubs. That is, SMP support is currently available both within the kernel and across different processes, but still remains limited within threads of the same process in userspace. Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20251027001815.1666872-6-tiwei.bie@linux.dev Signed-off-by: Johannes Berg <johannes.berg@intel.com>
22 lines
500 B
C
22 lines
500 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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*/
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#ifndef __SKAS_H
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#define __SKAS_H
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#include <sysdep/ptrace.h>
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extern int using_seccomp;
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extern void new_thread_handler(void);
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extern void handle_syscall(struct uml_pt_regs *regs);
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extern unsigned long current_stub_stack(void);
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extern struct mm_id *current_mm_id(void);
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extern void current_mm_sync(void);
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void initial_jmpbuf_lock(void);
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void initial_jmpbuf_unlock(void);
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#endif
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