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https://github.com/edk2-porting/linux-next.git
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df9ee29270
Fix the IRQ flag handling naming. In linux/irqflags.h under one configuration, it maps: local_irq_enable() -> raw_local_irq_enable() local_irq_disable() -> raw_local_irq_disable() local_irq_save() -> raw_local_irq_save() ... and under the other configuration, it maps: raw_local_irq_enable() -> local_irq_enable() raw_local_irq_disable() -> local_irq_disable() raw_local_irq_save() -> local_irq_save() ... This is quite confusing. There should be one set of names expected of the arch, and this should be wrapped to give another set of names that are expected by users of this facility. Change this to have the arch provide: flags = arch_local_save_flags() flags = arch_local_irq_save() arch_local_irq_restore(flags) arch_local_irq_disable() arch_local_irq_enable() arch_irqs_disabled_flags(flags) arch_irqs_disabled() arch_safe_halt() Then linux/irqflags.h wraps these to provide: raw_local_save_flags(flags) raw_local_irq_save(flags) raw_local_irq_restore(flags) raw_local_irq_disable() raw_local_irq_enable() raw_irqs_disabled_flags(flags) raw_irqs_disabled() raw_safe_halt() with type checking on the flags 'arguments', and then wraps those to provide: local_save_flags(flags) local_irq_save(flags) local_irq_restore(flags) local_irq_disable() local_irq_enable() irqs_disabled_flags(flags) irqs_disabled() safe_halt() with tracing included if enabled. The arch functions can now all be inline functions rather than some of them having to be macros. Signed-off-by: David Howells <dhowells@redhat.com> [X86, FRV, MN10300] Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> [Tile] Signed-off-by: Michal Simek <monstr@monstr.eu> [Microblaze] Tested-by: Catalin Marinas <catalin.marinas@arm.com> [ARM] Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> [AVR] Acked-by: Tony Luck <tony.luck@intel.com> [IA-64] Acked-by: Hirokazu Takata <takata@linux-m32r.org> [M32R] Acked-by: Greg Ungerer <gerg@uclinux.org> [M68K/M68KNOMMU] Acked-by: Ralf Baechle <ralf@linux-mips.org> [MIPS] Acked-by: Kyle McMartin <kyle@mcmartin.ca> [PA-RISC] Acked-by: Paul Mackerras <paulus@samba.org> [PowerPC] Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [S390] Acked-by: Chen Liqin <liqin.chen@sunplusct.com> [Score] Acked-by: Matt Fleming <matt@console-pimps.org> [SH] Acked-by: David S. Miller <davem@davemloft.net> [Sparc] Acked-by: Chris Zankel <chris@zankel.net> [Xtensa] Reviewed-by: Richard Henderson <rth@twiddle.net> [Alpha] Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp> [H8300] Cc: starvik@axis.com [CRIS] Cc: jesper.nilsson@axis.com [CRIS] Cc: linux-cris-kernel@axis.com
58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
/*
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* SHcompact irqflags support
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*
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* Copyright (C) 2006 - 2009 Paul Mundt
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/irqflags.h>
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#include <linux/module.h>
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void notrace arch_local_irq_restore(unsigned long flags)
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{
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unsigned long __dummy0, __dummy1;
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if (flags == ARCH_IRQ_DISABLED) {
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__asm__ __volatile__ (
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"stc sr, %0\n\t"
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"or #0xf0, %0\n\t"
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"ldc %0, sr\n\t"
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: "=&z" (__dummy0)
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: /* no inputs */
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: "memory"
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);
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} else {
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__asm__ __volatile__ (
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"stc sr, %0\n\t"
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"and %1, %0\n\t"
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#ifdef CONFIG_CPU_HAS_SR_RB
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"stc r6_bank, %1\n\t"
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"or %1, %0\n\t"
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#endif
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"ldc %0, sr\n\t"
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: "=&r" (__dummy0), "=r" (__dummy1)
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: "1" (~ARCH_IRQ_DISABLED)
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: "memory"
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);
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}
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}
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EXPORT_SYMBOL(arch_local_irq_restore);
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unsigned long notrace arch_local_save_flags(void)
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{
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unsigned long flags;
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__asm__ __volatile__ (
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"stc sr, %0\n\t"
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"and #0xf0, %0\n\t"
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: "=&z" (flags)
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: /* no inputs */
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: "memory"
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);
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return flags;
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}
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EXPORT_SYMBOL(arch_local_save_flags);
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