/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
#include <cputypes.h>
-#include <cpus.h>
#include <platforms.h>
#include <kern/ast.h>
#include <kern/queue.h>
#include <kern/sched_prim.h>
#include <kern/thread.h>
-#include <kern/thread_act.h>
-#include <kern/thread_swap.h>
#include <kern/processor.h>
#include <kern/spl.h>
+#if CONFIG_TELEMETRY
+#include <kern/telemetry.h>
+#endif
+#include <kern/wait_queue.h>
+#include <kern/ledger.h>
#include <mach/policy.h>
+#include <machine/trap.h> // for CHUD AST hook
+#include <machine/pal_routines.h>
+#include <security/mac_mach_internal.h> // for MACF AST hook
+
+volatile perfASTCallback perfASTHook;
-volatile ast_t need_ast[NCPUS];
void
ast_init(void)
{
-#ifndef MACHINE_AST
- register int i;
-
- for (i=0; i<NCPUS; i++) {
- need_ast[i] = AST_NONE;
- }
-#endif /* MACHINE_AST */
}
+extern void chudxnu_thread_ast(thread_t); // XXX this should probably be in a header...
+
/*
* Called at splsched.
*/
void
ast_taken(
- ast_t reasons,
- boolean_t enable
+ ast_t reasons,
+ boolean_t enable
)
{
- register thread_t self = current_thread();
- register int mycpu = cpu_number();
- boolean_t preempt_trap = (reasons == AST_PREEMPTION);
+ boolean_t preempt_trap = (reasons == AST_PREEMPTION);
+ ast_t *myast = ast_pending();
+ thread_t thread = current_thread();
+ perfASTCallback perf_hook = perfASTHook;
+
+ /*
+ * CHUD hook - all threads including idle processor threads
+ */
+ if (perf_hook) {
+ if (*myast & AST_CHUD_ALL) {
+ (*perf_hook)(reasons, myast);
+
+ if (*myast == AST_NONE)
+ return;
+ }
+ }
+ else
+ *myast &= ~AST_CHUD_ALL;
- reasons &= need_ast[mycpu];
- need_ast[mycpu] &= ~reasons;
+ reasons &= *myast;
+ *myast &= ~reasons;
/*
* Handle ASTs for all threads
* except idle processor threads.
*/
- if (!(self->state & TH_IDLE)) {
+ if (!(thread->state & TH_IDLE)) {
/*
* Check for urgent preemption.
*/
if ( (reasons & AST_URGENT) &&
- wait_queue_assert_possible(self) ) {
+ wait_queue_assert_possible(thread) ) {
if (reasons & AST_PREEMPT) {
counter(c_ast_taken_block++);
- thread_block_reason(THREAD_CONTINUE_NULL,
+ thread_block_reason(THREAD_CONTINUE_NULL, NULL,
AST_PREEMPT | AST_URGENT);
}
* Handle BSD hook.
*/
if (reasons & AST_BSD) {
- extern void bsd_ast(thread_act_t act);
- thread_act_t act = self->top_act;
-
- thread_ast_clear(act, AST_BSD);
- bsd_ast(act);
+ thread_ast_clear(thread, AST_BSD);
+ bsd_ast(thread);
+ }
+#endif
+#if CONFIG_MACF
+ /*
+ * Handle MACF hook.
+ */
+ if (reasons & AST_MACF) {
+ thread_ast_clear(thread, AST_MACF);
+ mac_thread_userret(thread);
}
#endif
-
/*
* Thread APC hook.
*/
if (reasons & AST_APC)
act_execute_returnhandlers();
+
+ if (reasons & AST_GUARD) {
+ thread_ast_clear(thread, AST_GUARD);
+ guard_ast(thread);
+ }
+
+ if (reasons & AST_LEDGER) {
+ thread_ast_clear(thread, AST_LEDGER);
+ ledger_ast(thread);
+ }
+
+ /*
+ * Kernel Profiling Hook
+ */
+ if (reasons & AST_KPERF) {
+ thread_ast_clear(thread, AST_KPERF);
+ chudxnu_thread_ast(thread);
+ }
+
+#if CONFIG_TELEMETRY
+ if (reasons & AST_TELEMETRY_ALL) {
+ boolean_t interrupted_userspace;
+
+ assert((reasons & AST_TELEMETRY_ALL) != AST_TELEMETRY_ALL); /* only one is valid at a time */
+ interrupted_userspace = (reasons & AST_TELEMETRY_USER) ? TRUE : FALSE;
+ thread_ast_clear(thread, AST_TELEMETRY_ALL);
+ telemetry_ast(thread, interrupted_userspace);
+ }
+#endif
ml_set_interrupts_enabled(FALSE);
/*
* Check for preemption.
*/
- if (reasons & AST_PREEMPT) {
- processor_t myprocessor = current_processor();
+ if (reasons & AST_PREEMPT)
+ reasons = csw_check(current_processor());
- if (csw_needed(self, myprocessor))
- reasons = AST_PREEMPT;
- else
- reasons = AST_NONE;
- }
if ( (reasons & AST_PREEMPT) &&
- wait_queue_assert_possible(self) ) {
+ wait_queue_assert_possible(thread) ) {
counter(c_ast_taken_block++);
- thread_block_reason(thread_exception_return, AST_PREEMPT);
+ thread_block_reason((thread_continue_t)thread_exception_return, NULL, AST_PREEMPT);
}
}
}
ast_check(
processor_t processor)
{
- register thread_t self = processor->active_thread;
+ thread_t thread = processor->active_thread;
- processor->current_pri = self->sched_pri;
- if (processor->state == PROCESSOR_RUNNING) {
- register ast_t preempt;
-processor_running:
+ processor->current_pri = thread->sched_pri;
+ processor->current_thmode = thread->sched_mode;
+ if ( processor->state == PROCESSOR_RUNNING ||
+ processor->state == PROCESSOR_SHUTDOWN ) {
+ ast_t preempt;
/*
* Propagate thread ast to processor.
*/
- ast_propagate(self->top_act->ast);
+ pal_ast_check(thread);
+
+ ast_propagate(thread->ast);
/*
* Context switch check.
*/
- if ((preempt = csw_check(self, processor)) != AST_NONE)
+ if ((preempt = csw_check(processor)) != AST_NONE)
ast_on(preempt);
}
- else
- if ( processor->state == PROCESSOR_DISPATCHING ||
- processor->state == PROCESSOR_IDLE ) {
- return;
- }
- else
- if (processor->state == PROCESSOR_SHUTDOWN)
- goto processor_running;
}
projects / apple / xnu.git / blobdiff