linux/include/asm-sparc/pil.h

#ifndef _SPARC64_PIL_H
#define _SPARC64_PIL_H

/* To avoid some locking problems, we hard allocate certain PILs
 * for SMP cross call messages that must do a etrap/rtrap.
 *
 * A local_irq_disable() does not block the cross call delivery, so
 * when SMP locking is an issue we reschedule the event into a PIL
 * interrupt which is blocked by local_irq_disable().
 *
 * In fact any XCALL which has to etrap/rtrap has a problem because
 * it is difficult to prevent rtrap from running BH's, and that would
 * need to be done if the XCALL arrived while %pil==15.
 */
#define PIL_SMP_CALL_FUNC	1
#define PIL_SMP_RECEIVE_SIGNAL	2
#define PIL_SMP_CAPTURE		3
#define PIL_SMP_CTX_NEW_VERSION	4
#define PIL_DEVICE_IRQ		5

#endif /* !(_SPARC64_PIL_H) */
sparc: copy sparc64 specific files to asm-sparc Used the following script to copy the files: cd include set -e SPARC64=`ls asm-sparc64` for FILE in ${SPARC64}; do if [ -f asm-sparc/$FILE ]; then echo $FILE exist in asm-sparc else git mv asm-sparc64/$FILE asm-sparc/$FILE printf "#include <asm-sparc/$FILE>\n" > asm-sparc64/$FILE git add asm-sparc64/$FILE fi done Signed-off-by: Sam Ravnborg <sam@ravnborg.org> 2008-06-19 18:26:19 +00:00			`#ifndef _SPARC64_PIL_H`
			`#define _SPARC64_PIL_H`

			`/* To avoid some locking problems, we hard allocate certain PILs`
			`* for SMP cross call messages that must do a etrap/rtrap.`
			`*`
			`* A local_irq_disable() does not block the cross call delivery, so`
			`* when SMP locking is an issue we reschedule the event into a PIL`
			`* interrupt which is blocked by local_irq_disable().`
			`*`
			`* In fact any XCALL which has to etrap/rtrap has a problem because`
			`* it is difficult to prevent rtrap from running BH's, and that would`
			`* need to be done if the XCALL arrived while %pil==15.`
			`*/`
			`#define PIL_SMP_CALL_FUNC 1`
			`#define PIL_SMP_RECEIVE_SIGNAL 2`
			`#define PIL_SMP_CAPTURE 3`
			`#define PIL_SMP_CTX_NEW_VERSION 4`
			`#define PIL_DEVICE_IRQ 5`

			`#endif /* !(_SPARC64_PIL_H) */`