OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	11/17/2022 06:42:15 AM	rwxr-xr-x
📄 Kbuild	681 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 arcregs.h	8.59 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 asm-offsets.h	311 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 atomic.h	15.14 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 barrier.h	1.75 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 bitops.h	9.81 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 bug.h	938 bytes	11/01/2022 04:52:05 PM	rw-r--r--
📄 cache.h	3.77 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 cacheflush.h	3.88 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 checksum.h	2.45 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 cmpxchg.h	5.4 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 current.h	695 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 delay.h	1.99 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 disasm.h	3.87 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 dma-mapping.h	734 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 dma.h	459 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 dwarf.h	892 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 elf.h	2.15 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 entry-arcv2.h	4.85 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 entry-compact.h	9.29 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 entry.h	6.73 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 exec.h	410 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 fb.h	411 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 futex.h	3.67 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 highmem.h	1.46 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 hugepage.h	2.41 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 io.h	6.42 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 irq.h	825 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 irqflags-arcv2.h	3.45 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 irqflags-compact.h	4.25 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 irqflags.h	509 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 kdebug.h	400 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 kgdb.h	1.35 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 kmap_types.h	489 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 kprobes.h	1.37 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 linkage.h	1.42 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 mach_desc.h	2.06 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 mmu.h	2.44 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mmu_context.h	5.67 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mmzone.h	989 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 module.h	661 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 page.h	2.99 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 pci.h	705 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 perf_event.h	6.86 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 pgalloc.h	3.79 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 pgtable.h	14.2 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 processor.h	4.69 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 ptrace.h	3.87 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 sections.h	407 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 segment.h	612 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 serial.h	644 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 setup.h	1.18 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 shmparam.h	442 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 smp.h	4.25 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 spinlock.h	8.79 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 spinlock_types.h	1.03 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 stacktrace.h	1.29 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 string.h	1.15 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 switch_to.h	1.17 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 syscall.h	1.57 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 syscalls.h	653 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 thread_info.h	3.39 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 timex.h	508 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 tlb-mmu1.h	3.48 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 tlb.h	1.23 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 tlbflush.h	1.76 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 uaccess.h	18.45 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 unaligned.h	771 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 unwind.h	3.51 KB	01/28/2018 09:20:33 PM	rw-r--r--

Editing: smp.h

/*
 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
 *
 * 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.
 */

#ifndef __ASM_ARC_SMP_H
#define __ASM_ARC_SMP_H

#ifdef CONFIG_SMP

#include <linux/types.h>
#include <linux/init.h>
#include <linux/threads.h>

#define raw_smp_processor_id() (current_thread_info()->cpu)

/* including cpumask.h leads to cyclic deps hence this Forward declaration */
struct cpumask;

/*
 * APIs provided by arch SMP code to generic code
 */
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);

/*
 * APIs provided by arch SMP code to rest of arch code
 */
extern void __init smp_init_cpus(void);
extern void first_lines_of_secondary(void);
extern const char *arc_platform_smp_cpuinfo(void);

/*
 * API expected BY platform smp code (FROM arch smp code)
 *
 * smp_ipi_irq_setup:
 *	Takes @cpu and @hwirq to which the arch-common ISR is hooked up
 */
extern int smp_ipi_irq_setup(int cpu, irq_hw_number_t hwirq);

/*
 * struct plat_smp_ops	- SMP callbacks provided by platform to ARC SMP
 *
 * @info:		SoC SMP specific info for /proc/cpuinfo etc
 * @init_early_smp:	A SMP specific h/w block can init itself
 * 			Could be common across platforms so not covered by
 * 			mach_desc->init_early()
 * @init_per_cpu:	Called for each core so SMP h/w block driver can do
 * 			any needed setup per cpu (e.g. IPI request)
 * @cpu_kick:		For Master to kickstart a cpu (optionally at a PC)
 * @ipi_send:		To send IPI to a @cpu
 * @ips_clear:		To clear IPI received at @irq
 */
struct plat_smp_ops {
	const char 	*info;
	void		(*init_early_smp)(void);
	void		(*init_per_cpu)(int cpu);
	void		(*cpu_kick)(int cpu, unsigned long pc);
	void		(*ipi_send)(int cpu);
	void		(*ipi_clear)(int irq);
};

/* TBD: stop exporting it for direct population by platform */
extern struct plat_smp_ops  plat_smp_ops;

#else /* CONFIG_SMP */

static inline void smp_init_cpus(void) {}
static inline const char *arc_platform_smp_cpuinfo(void)
{
	return "";
}

#endif  /* !CONFIG_SMP */

/*
 * ARC700 doesn't support atomic Read-Modify-Write ops.
 * Originally Interrupts had to be disabled around code to gaurantee atomicity.
 * The LLOCK/SCOND insns allow writing interrupt-hassle-free based atomic ops
 * based on retry-if-irq-in-atomic (with hardware assist).
 * However despite these, we provide the IRQ disabling variant
 *
 * (1) These insn were introduced only in 4.10 release. So for older released
 *	support needed.
 *
 * (2) In a SMP setup, the LLOCK/SCOND atomicity across CPUs needs to be
 *	gaurantted by the platform (not something which core handles).
 *	Assuming a platform won't, SMP Linux needs to use spinlocks + local IRQ
 *	disabling for atomicity.
 *
 *	However exported spinlock API is not usable due to cyclic hdr deps
 *	(even after system.h disintegration upstream)
 *	asm/bitops.h -> linux/spinlock.h -> linux/preempt.h
 *		-> linux/thread_info.h -> linux/bitops.h -> asm/bitops.h
 *
 *	So the workaround is to use the lowest level arch spinlock API.
 *	The exported spinlock API is smart enough to be NOP for !CONFIG_SMP,
 *	but same is not true for ARCH backend, hence the need for 2 variants
 */
#ifndef CONFIG_ARC_HAS_LLSC

#include <linux/irqflags.h>
#ifdef CONFIG_SMP

#include <asm/spinlock.h>

extern arch_spinlock_t smp_atomic_ops_lock;
extern arch_spinlock_t smp_bitops_lock;

#define atomic_ops_lock(flags)	do {		\
	local_irq_save(flags);			\
	arch_spin_lock(&smp_atomic_ops_lock);	\
} while (0)

#define atomic_ops_unlock(flags) do {		\
	arch_spin_unlock(&smp_atomic_ops_lock);	\
	local_irq_restore(flags);		\
} while (0)

#define bitops_lock(flags)	do {		\
	local_irq_save(flags);			\
	arch_spin_lock(&smp_bitops_lock);	\
} while (0)

#define bitops_unlock(flags) do {		\
	arch_spin_unlock(&smp_bitops_lock);	\
	local_irq_restore(flags);		\
} while (0)

#else /* !CONFIG_SMP */

#define atomic_ops_lock(flags)		local_irq_save(flags)
#define atomic_ops_unlock(flags)	local_irq_restore(flags)

#define bitops_lock(flags)		local_irq_save(flags)
#define bitops_unlock(flags)		local_irq_restore(flags)

#endif /* !CONFIG_SMP */

#endif	/* !CONFIG_ARC_HAS_LLSC */

#endif