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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5f56a5dfdb
Define HAVE_EXIT_THREAD for archs which want to do something in exit_thread. For others, let's define exit_thread as an empty inline. This is a cleanup before we change the prototype of exit_thread to accept a task parameter. [akpm@linux-foundation.org: fix mips] Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: "David S. Miller" <davem@davemloft.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chen Liqin <liqin.linux@gmail.com> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Howells <dhowells@redhat.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Hogan <james.hogan@imgtec.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Jonas Bonn <jonas@southpole.se> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Lennox Wu <lennox.wu@gmail.com> Cc: Ley Foon Tan <lftan@altera.com> Cc: Mark Salter <msalter@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Mikael Starvik <starvik@axis.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rich Felker <dalias@libc.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Richard Weinberger <richard@nod.at> Cc: Russell King <linux@arm.linux.org.uk> Cc: Steven Miao <realmz6@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
152 lines
3.3 KiB
C
152 lines
3.3 KiB
C
/*
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* Copyright 2004-2009 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#ifndef __ASM_BFIN_PROCESSOR_H
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#define __ASM_BFIN_PROCESSOR_H
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/*
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* Default implementation of macro that returns current
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* instruction pointer ("program counter").
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*/
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#define current_text_addr() ({ __label__ _l; _l: &&_l;})
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#include <asm/ptrace.h>
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#include <mach/blackfin.h>
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static inline unsigned long rdusp(void)
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{
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unsigned long usp;
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__asm__ __volatile__("%0 = usp;\n\t":"=da"(usp));
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return usp;
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}
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static inline void wrusp(unsigned long usp)
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{
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__asm__ __volatile__("usp = %0;\n\t"::"da"(usp));
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}
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static inline unsigned long __get_SP(void)
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{
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unsigned long sp;
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__asm__ __volatile__("%0 = sp;\n\t" : "=da"(sp));
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return sp;
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}
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/*
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* User space process size: 1st byte beyond user address space.
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* Fairly meaningless on nommu. Parts of user programs can be scattered
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* in a lot of places, so just disable this by setting it to 0xFFFFFFFF.
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*/
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#define TASK_SIZE 0xFFFFFFFF
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#ifdef __KERNEL__
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#define STACK_TOP TASK_SIZE
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#endif
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#define TASK_UNMAPPED_BASE 0
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struct thread_struct {
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unsigned long ksp; /* kernel stack pointer */
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unsigned long usp; /* user stack pointer */
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unsigned short seqstat; /* saved status register */
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unsigned long esp0; /* points to SR of stack frame pt_regs */
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unsigned long pc; /* instruction pointer */
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void * debuggerinfo;
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};
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#define INIT_THREAD { \
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sizeof(init_stack) + (unsigned long) init_stack, 0, \
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PS_S, 0, 0 \
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}
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extern void start_thread(struct pt_regs *regs, unsigned long new_ip,
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unsigned long new_sp);
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/* Forward declaration, a strange C thing */
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struct task_struct;
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/* Free all resources held by a thread. */
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static inline void release_thread(struct task_struct *dead_task)
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{
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}
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/*
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* Return saved PC of a blocked thread.
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*/
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#define thread_saved_pc(tsk) (tsk->thread.pc)
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unsigned long get_wchan(struct task_struct *p);
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#define KSTK_EIP(tsk) \
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({ \
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unsigned long eip = 0; \
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if ((tsk)->thread.esp0 > PAGE_SIZE && \
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MAP_NR((tsk)->thread.esp0) < max_mapnr) \
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eip = ((struct pt_regs *) (tsk)->thread.esp0)->pc; \
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eip; })
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#define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp)
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#define cpu_relax() smp_mb()
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#define cpu_relax_lowlatency() cpu_relax()
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/* Get the Silicon Revision of the chip */
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static inline uint32_t __pure bfin_revid(void)
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{
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/* Always use CHIPID, to work around ANOMALY_05000234 */
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uint32_t revid = (bfin_read_CHIPID() & CHIPID_VERSION) >> 28;
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#ifdef _BOOTROM_GET_DXE_ADDRESS_TWI
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/*
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* ANOMALY_05000364
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* Incorrect Revision Number in DSPID Register
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*/
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if (ANOMALY_05000364 &&
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bfin_read16(_BOOTROM_GET_DXE_ADDRESS_TWI) == 0x2796)
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revid = 1;
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#endif
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return revid;
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}
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static inline uint16_t __pure bfin_cpuid(void)
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{
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return (bfin_read_CHIPID() & CHIPID_FAMILY) >> 12;
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}
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static inline uint32_t __pure bfin_dspid(void)
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{
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return bfin_read_DSPID();
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}
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#define blackfin_core_id() (bfin_dspid() & 0xff)
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static inline uint32_t __pure bfin_compiled_revid(void)
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{
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#if defined(CONFIG_BF_REV_0_0)
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return 0;
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#elif defined(CONFIG_BF_REV_0_1)
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return 1;
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#elif defined(CONFIG_BF_REV_0_2)
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return 2;
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#elif defined(CONFIG_BF_REV_0_3)
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return 3;
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#elif defined(CONFIG_BF_REV_0_4)
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return 4;
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#elif defined(CONFIG_BF_REV_0_5)
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return 5;
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#elif defined(CONFIG_BF_REV_0_6)
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return 6;
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#elif defined(CONFIG_BF_REV_ANY)
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return 0xffff;
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#else
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return -1;
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#endif
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}
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#endif
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