* Copyright (c) 2011 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
* 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
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <mach/mach_types.h>
#include <machine/machine_routines.h>
-// #include <libkern/libkern.h>
#include <kern/kalloc.h>
#include <kern/debug.h> /* panic */
#include <kern/thread.h>
#include <sys/errno.h>
+#include <sys/vm.h>
+#include <vm/vm_object.h>
+#include <vm/vm_page.h>
+#include <vm/vm_pageout.h>
-#include <chud/chud_xnu.h>
-#include <kperf/kperf.h>
-
+#include <kperf/action.h>
+#include <kperf/ast.h>
#include <kperf/buffer.h>
-#include <kperf/timetrigger.h>
-#include <kperf/threadinfo.h>
#include <kperf/callstack.h>
-#include <kperf/sample.h>
-#include <kperf/filter.h>
-#include <kperf/action.h>
#include <kperf/context.h>
-#include <kperf/ast.h>
-
-#define ACTION_MAX 32
+#include <kperf/kdebug_trigger.h>
+#include <kperf/kperf.h>
+#include <kperf/kperf_kpc.h>
+#include <kperf/kptimer.h>
+#include <kperf/pet.h>
+#include <kperf/sample.h>
+#include <kperf/thread_samplers.h>
-/* XXX: callback handler from chudxnu */
-/* FIXME: hook this up to something */
-//void (*kperf_thread_ast_handler)(thread_t);
+#define ACTION_MAX (32)
/* the list of different actions to take */
-struct action
-{
- unsigned sample;
+struct action {
+ uint32_t sample;
+ uint32_t ucallstack_depth;
+ uint32_t kcallstack_depth;
+ uint32_t userdata;
+ int pid_filter;
};
/* the list of actions */
-static unsigned actionc = 0;
+static unsigned int actionc = 0;
static struct action *actionv = NULL;
+/* should emit tracepoint on context switch */
+int kperf_kdebug_cswitch = 0;
-/* Do the real work! */
-/* this can be called in any context ... right? */
-static kern_return_t
-kperf_sample_internal( struct kperf_sample *sbuf,
- struct kperf_context *context,
- unsigned sample_what, boolean_t pend_user )
+bool
+kperf_action_has_non_system(unsigned int actionid)
+{
+ if (actionid > actionc) {
+ return false;
+ }
+
+ if (actionv[actionid - 1].sample & ~SAMPLER_SYS_MEM) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+bool
+kperf_action_has_task(unsigned int actionid)
+{
+ if (actionid > actionc) {
+ return false;
+ }
+
+ return actionv[actionid - 1].sample & SAMPLER_TASK_MASK;
+}
+
+bool
+kperf_action_has_thread(unsigned int actionid)
+{
+ if (actionid > actionc) {
+ return false;
+ }
+
+ return actionv[actionid - 1].sample & SAMPLER_THREAD_MASK;
+}
+
+static void
+kperf_system_memory_log(void)
+{
+ BUF_DATA(PERF_MI_SYS_DATA, (uintptr_t)vm_page_free_count,
+ (uintptr_t)vm_page_wire_count, (uintptr_t)vm_page_external_count,
+ (uintptr_t)(vm_page_active_count + vm_page_inactive_count +
+ vm_page_speculative_count));
+ BUF_DATA(PERF_MI_SYS_DATA_2, (uintptr_t)vm_page_anonymous_count,
+ (uintptr_t)vm_page_internal_count,
+ (uintptr_t)vm_pageout_vminfo.vm_pageout_compressions,
+ (uintptr_t)VM_PAGE_COMPRESSOR_COUNT);
+}
+
+static void
+kperf_sample_user_internal(struct kperf_usample *sbuf,
+ struct kperf_context *context, unsigned int actionid,
+ unsigned int sample_what)
{
- boolean_t enabled;
- int did_ucallstack = 0, did_tinfo_extra = 0;
+ if (sample_what & SAMPLER_USTACK) {
+ kperf_ucallstack_sample(&sbuf->ucallstack, context);
+ }
+ if (sample_what & SAMPLER_TH_DISPATCH) {
+ kperf_thread_dispatch_sample(&sbuf->th_dispatch, context);
+ }
+ if (sample_what & SAMPLER_TH_INFO) {
+ kperf_thread_info_sample(&sbuf->th_info, context);
+ }
- /* not much point continuing here, but what to do ? return
- * Shutdown? cut a tracepoint and continue?
+ boolean_t intren = ml_set_interrupts_enabled(FALSE);
+
+ /*
+ * No userdata or sample_flags for this one.
*/
- if( sample_what == 0 )
+ BUF_DATA(PERF_GEN_EVENT | DBG_FUNC_START, sample_what, actionid);
+
+ if (sample_what & SAMPLER_USTACK) {
+ kperf_ucallstack_log(&sbuf->ucallstack);
+ }
+ if (sample_what & SAMPLER_TH_DISPATCH) {
+ kperf_thread_dispatch_log(&sbuf->th_dispatch);
+ }
+ if (sample_what & SAMPLER_TH_INFO) {
+ kperf_thread_info_log(&sbuf->th_info);
+ }
+
+ BUF_DATA(PERF_GEN_EVENT | DBG_FUNC_END, sample_what);
+
+ ml_set_interrupts_enabled(intren);
+}
+
+void
+kperf_sample_user(struct kperf_usample *sbuf, struct kperf_context *context,
+ unsigned int actionid, unsigned int sample_flags)
+{
+ if (actionid == 0 || actionid > actionc) {
+ return;
+ }
+
+ unsigned int sample_what = actionv[actionid - 1].sample;
+ unsigned int ucallstack_depth = actionv[actionid - 1].ucallstack_depth;
+
+ /* callstacks should be explicitly ignored */
+ if (sample_flags & SAMPLE_FLAG_EMPTY_CALLSTACK) {
+ sample_what &= ~(SAMPLER_KSTACK | SAMPLER_USTACK);
+ }
+ if (sample_flags & SAMPLE_FLAG_ONLY_SYSTEM) {
+ sample_what &= SAMPLER_SYS_MEM;
+ }
+ assert((sample_flags & (SAMPLE_FLAG_THREAD_ONLY | SAMPLE_FLAG_TASK_ONLY))
+ != (SAMPLE_FLAG_THREAD_ONLY | SAMPLE_FLAG_TASK_ONLY));
+ if (sample_flags & SAMPLE_FLAG_THREAD_ONLY) {
+ sample_what &= SAMPLER_THREAD_MASK;
+ }
+ if (sample_flags & SAMPLE_FLAG_TASK_ONLY) {
+ sample_what &= SAMPLER_TASK_MASK;
+ }
+
+ if (sample_what == 0) {
+ return;
+ }
+
+ sbuf->ucallstack.kpuc_nframes = ucallstack_depth ?:
+ MAX_UCALLSTACK_FRAMES;
+
+ kperf_sample_user_internal(sbuf, context, actionid, sample_what);
+}
+
+static kern_return_t
+kperf_sample_internal(struct kperf_sample *sbuf,
+ struct kperf_context *context,
+ unsigned sample_what, unsigned sample_flags,
+ unsigned actionid, unsigned ucallstack_depth)
+{
+ int pended_ucallstack = 0;
+ int pended_th_dispatch = 0;
+ bool on_idle_thread = false;
+ uint32_t userdata = actionid;
+ bool task_only = false;
+
+ if (sample_what == 0) {
return SAMPLE_CONTINUE;
+ }
- int is_kernel = (context->cur_pid == 0);
+ /* callstacks should be explicitly ignored */
+ if (sample_flags & SAMPLE_FLAG_EMPTY_CALLSTACK) {
+ sample_what &= ~(SAMPLER_KSTACK | SAMPLER_USTACK);
+ }
- /* an event occurred. Sample everything and dump it in a
- * buffer.
- */
+ if (sample_flags & SAMPLE_FLAG_ONLY_SYSTEM) {
+ sample_what &= SAMPLER_SYS_MEM;
+ }
- /* collect data from samplers */
- if( sample_what & SAMPLER_TINFO ) {
- kperf_threadinfo_sample( &sbuf->threadinfo, context );
-
- /* XXX FIXME This drops events when the thread is idle.
- * This should be configurable. */
- if (sbuf->threadinfo.runmode & 0x40)
- return SAMPLE_CONTINUE;
+ assert((sample_flags & (SAMPLE_FLAG_THREAD_ONLY | SAMPLE_FLAG_TASK_ONLY))
+ != (SAMPLE_FLAG_THREAD_ONLY | SAMPLE_FLAG_TASK_ONLY));
+ if (sample_flags & SAMPLE_FLAG_THREAD_ONLY) {
+ sample_what &= SAMPLER_THREAD_MASK;
}
+ if (sample_flags & SAMPLE_FLAG_TASK_ONLY) {
+ task_only = true;
+ sample_what &= SAMPLER_TASK_MASK;
+ }
+
+ if (!task_only) {
+ context->cur_thread->kperf_pet_gen =
+ os_atomic_load(&kppet_gencount, relaxed);
+ }
+ bool is_kernel = (context->cur_pid == 0);
- if( sample_what & SAMPLER_KSTACK )
- kperf_kcallstack_sample( &sbuf->kcallstack, context );
+ if (actionid && actionid <= actionc) {
+ sbuf->kcallstack.kpkc_nframes =
+ actionv[actionid - 1].kcallstack_depth;
+ } else {
+ sbuf->kcallstack.kpkc_nframes = MAX_KCALLSTACK_FRAMES;
+ }
- /* sensitive ones */
- if ( !is_kernel ) {
- if( pend_user )
- {
- if( sample_what & SAMPLER_USTACK )
- did_ucallstack = kperf_ucallstack_pend( context );
+ ucallstack_depth = ucallstack_depth ?: MAX_UCALLSTACK_FRAMES;
+ sbuf->kcallstack.kpkc_flags = 0;
+ sbuf->usample.ucallstack.kpuc_flags = 0;
- if( sample_what & SAMPLER_TINFOEX )
- did_tinfo_extra = kperf_threadinfo_extra_pend( context );
+ if (sample_what & SAMPLER_TH_INFO) {
+ kperf_thread_info_sample(&sbuf->th_info, context);
+
+ if (!(sample_flags & SAMPLE_FLAG_IDLE_THREADS)) {
+ if (sbuf->th_info.kpthi_runmode & 0x40) {
+ on_idle_thread = true;
+ goto log_sample;
+ }
}
- else
- {
- if( sample_what & SAMPLER_USTACK )
- kperf_ucallstack_sample( &sbuf->ucallstack, context );
-
- if( sample_what & SAMPLER_TINFOEX )
- kperf_threadinfo_extra_sample( &sbuf->tinfo_ex,
- context );
+ }
+
+ if (sample_what & SAMPLER_TH_SNAPSHOT) {
+ kperf_thread_snapshot_sample(&(sbuf->th_snapshot), context);
+ }
+ if (sample_what & SAMPLER_TH_SCHEDULING) {
+ kperf_thread_scheduling_sample(&(sbuf->th_scheduling), context);
+ }
+ if (sample_what & SAMPLER_KSTACK) {
+ if (sample_flags & SAMPLE_FLAG_CONTINUATION) {
+ kperf_continuation_sample(&(sbuf->kcallstack), context);
+ } else if (sample_flags & SAMPLE_FLAG_NON_INTERRUPT) {
+ /* outside of interrupt context, backtrace the current thread */
+ kperf_backtrace_sample(&(sbuf->kcallstack), context);
+ } else {
+ kperf_kcallstack_sample(&(sbuf->kcallstack), context);
}
}
+ if (sample_what & SAMPLER_TK_SNAPSHOT) {
+ kperf_task_snapshot_sample(context->cur_task, &(sbuf->tk_snapshot));
+ }
+
+ if (!is_kernel) {
+ if (sample_what & SAMPLER_MEMINFO) {
+ kperf_meminfo_sample(context->cur_task, &(sbuf->meminfo));
+ }
+
+ if (sample_flags & SAMPLE_FLAG_PEND_USER) {
+ if (sample_what & SAMPLER_USTACK) {
+ pended_ucallstack = kperf_ucallstack_pend(context,
+ ucallstack_depth, actionid);
+ }
+
+ if (sample_what & SAMPLER_TH_DISPATCH) {
+ pended_th_dispatch =
+ kperf_thread_dispatch_pend(context, actionid);
+ }
+ }
+ }
+
+ if (sample_what & SAMPLER_PMC_THREAD) {
+ kperf_kpc_thread_sample(&(sbuf->kpcdata), sample_what);
+ } else if (sample_what & SAMPLER_PMC_CPU) {
+ kperf_kpc_cpu_sample(&(sbuf->kpcdata), sample_what);
+ }
+
+log_sample:
+ /* lookup the user tag, if any */
+ if (actionid && (actionid <= actionc)) {
+ userdata = actionv[actionid - 1].userdata;
+ }
+
+ /* avoid logging if this sample only pended samples */
+ if (sample_flags & SAMPLE_FLAG_PEND_USER &&
+ !(sample_what & ~(SAMPLER_USTACK | SAMPLER_TH_DISPATCH))) {
+ return SAMPLE_CONTINUE;
+ }
/* stash the data into the buffer
* interrupts off to ensure we don't get split
*/
- enabled = ml_set_interrupts_enabled(FALSE);
-
- if ( pend_user )
- BUF_DATA1( PERF_GEN_EVENT | DBG_FUNC_START, sample_what );
+ boolean_t enabled = ml_set_interrupts_enabled(FALSE);
- /* dump threadinfo */
- if( sample_what & SAMPLER_TINFO )
- kperf_threadinfo_log( &sbuf->threadinfo );
+ BUF_DATA(PERF_GEN_EVENT | DBG_FUNC_START, sample_what,
+ actionid, userdata, sample_flags);
- /* dump kcallstack */
- if( sample_what & SAMPLER_KSTACK )
- kperf_kcallstack_log( &sbuf->kcallstack );
+ if (sample_flags & SAMPLE_FLAG_SYSTEM) {
+ if (sample_what & SAMPLER_SYS_MEM) {
+ kperf_system_memory_log();
+ }
+ }
+ if (on_idle_thread) {
+ goto log_sample_end;
+ }
+ if (sample_what & SAMPLER_TH_INFO) {
+ kperf_thread_info_log(&sbuf->th_info);
+ }
+ if (sample_what & SAMPLER_TH_SCHEDULING) {
+ kperf_thread_scheduling_log(&(sbuf->th_scheduling));
+ }
+ if (sample_what & SAMPLER_TH_SNAPSHOT) {
+ kperf_thread_snapshot_log(&(sbuf->th_snapshot));
+ }
+ if (sample_what & SAMPLER_KSTACK) {
+ kperf_kcallstack_log(&sbuf->kcallstack);
+ }
+ if (sample_what & SAMPLER_TH_INSCYC) {
+ kperf_thread_inscyc_log(context);
+ }
+ if (sample_what & SAMPLER_TK_SNAPSHOT) {
+ kperf_task_snapshot_log(&(sbuf->tk_snapshot));
+ }
+ if (sample_what & SAMPLER_TK_INFO) {
+ kperf_task_info_log(context);
+ }
/* dump user stuff */
- if ( !is_kernel ) {
- if ( pend_user )
- {
- if ( did_ucallstack )
- BUF_INFO1( PERF_CS_UPEND, 0 );
-
- if ( did_tinfo_extra )
- BUF_INFO1( PERF_TI_XPEND, 0 );
+ if (!is_kernel) {
+ /* dump meminfo */
+ if (sample_what & SAMPLER_MEMINFO) {
+ kperf_meminfo_log(&(sbuf->meminfo));
}
- else
- {
- if( sample_what & SAMPLER_USTACK )
- kperf_ucallstack_log( &sbuf->ucallstack );
- if( sample_what & SAMPLER_TINFOEX )
- kperf_threadinfo_extra_log( &sbuf->tinfo_ex );
+ if (sample_flags & SAMPLE_FLAG_PEND_USER) {
+ if (pended_ucallstack) {
+ BUF_INFO(PERF_CS_UPEND);
+ }
+
+ if (pended_th_dispatch) {
+ BUF_INFO(PERF_TI_DISPPEND);
+ }
}
}
- if ( pend_user )
- BUF_DATA1( PERF_GEN_EVENT | DBG_FUNC_END, sample_what );
+ if (sample_what & SAMPLER_PMC_CONFIG) {
+ kperf_kpc_config_log(&(sbuf->kpcdata));
+ }
+ if (sample_what & SAMPLER_PMC_THREAD) {
+ kperf_kpc_thread_log(&(sbuf->kpcdata));
+ } else if (sample_what & SAMPLER_PMC_CPU) {
+ kperf_kpc_cpu_log(&(sbuf->kpcdata));
+ }
+
+log_sample_end:
+ BUF_DATA(PERF_GEN_EVENT | DBG_FUNC_END, sample_what, on_idle_thread ? 1 : 0);
/* intrs back on */
ml_set_interrupts_enabled(enabled);
/* Translate actionid into sample bits and take a sample */
kern_return_t
-kperf_sample( struct kperf_sample *sbuf,
- struct kperf_context *context,
- unsigned actionid, boolean_t pend_user )
+kperf_sample(struct kperf_sample *sbuf,
+ struct kperf_context *context,
+ unsigned actionid, unsigned sample_flags)
{
- unsigned sample_what = 0;
-
- /* check samppling is on, or panic */
- if( kperf_sampling_status() == KPERF_SAMPLING_OFF )
- panic("trigger fired while sampling off");
- else if( kperf_sampling_status() == KPERF_SAMPLING_SHUTDOWN )
- return SAMPLE_SHUTDOWN;
-
/* work out what to sample, if anything */
- if( actionid >= actionc )
+ if ((actionid > actionc) || (actionid == 0)) {
return SAMPLE_SHUTDOWN;
+ }
+
+ /* check the pid filter against the context's current pid.
+ * filter pid == -1 means any pid
+ */
+ int pid_filter = actionv[actionid - 1].pid_filter;
+ if ((pid_filter != -1) && (pid_filter != context->cur_pid)) {
+ return SAMPLE_CONTINUE;
+ }
- sample_what = actionv[actionid].sample;
+ /* the samplers to run */
+ unsigned int sample_what = actionv[actionid - 1].sample;
+ unsigned int ucallstack_depth = actionv[actionid - 1].ucallstack_depth;
- return kperf_sample_internal( sbuf, context, sample_what, pend_user );
+ /* do the actual sample operation */
+ return kperf_sample_internal(sbuf, context, sample_what,
+ sample_flags, actionid, ucallstack_depth);
}
-/* ast callback on a thread */
void
-kperf_thread_ast_handler( thread_t thread )
+kperf_kdebug_handler(uint32_t debugid, uintptr_t *starting_fp)
{
- int r;
- uint32_t t_chud;
- unsigned sample_what = 0;
- /* we know we're on a thread, so let's do stuff */
- task_t task = NULL;
-
- /* Don't sample if we are shutting down or off */
- if( kperf_sampling_status() != KPERF_SAMPLING_ON )
+ uint32_t sample_flags = SAMPLE_FLAG_PEND_USER;
+ struct kperf_sample *sample = NULL;
+ kern_return_t kr = KERN_SUCCESS;
+ int s;
+
+ if (!kperf_kdebug_should_trigger(debugid)) {
return;
+ }
- BUF_INFO1(PERF_AST_HNDLR | DBG_FUNC_START, thread);
+ BUF_VERB(PERF_KDBG_HNDLR | DBG_FUNC_START, debugid);
- /* FIXME: probably want a faster allocator here... :P */
- struct kperf_sample *sbuf = kalloc( sizeof(*sbuf) );
- if( sbuf == NULL )
- {
- /* FIXME: error code */
- BUF_INFO1( PERF_AST_ERROR, 0 );
- goto error;
+ thread_t thread = current_thread();
+ task_t task = get_threadtask(thread);
+ struct kperf_context ctx = {
+ .cur_thread = thread,
+ .cur_task = task,
+ .cur_pid = task_pid(task),
+ .trigger_type = TRIGGER_TYPE_KDEBUG,
+ .trigger_id = 0,
+ };
+
+ s = ml_set_interrupts_enabled(0);
+
+ sample = kperf_intr_sample_buffer();
+
+ if (!ml_at_interrupt_context()) {
+ sample_flags |= SAMPLE_FLAG_NON_INTERRUPT;
+ ctx.starting_fp = starting_fp;
}
- /* make a context, take a sample */
- struct kperf_context ctx;
- ctx.cur_thread = thread;
- ctx.cur_pid = -1;
+ kr = kperf_sample(sample, &ctx, kperf_kdebug_get_action(), sample_flags);
+
+ ml_set_interrupts_enabled(s);
+ BUF_VERB(PERF_KDBG_HNDLR | DBG_FUNC_END, kr);
+}
+
+/*
+ * This function allocates >2.3KB of the stack. Prevent the compiler from
+ * inlining this function into ast_taken and ensure the stack memory is only
+ * allocated for the kperf AST.
+ */
+__attribute__((noinline))
+void
+kperf_thread_ast_handler(thread_t thread)
+{
+ uint32_t ast = thread->kperf_ast;
+
+ BUF_INFO(PERF_AST_HNDLR | DBG_FUNC_START, thread, ast);
+
+ struct kperf_usample sbuf = {};
- task = chudxnu_task_for_thread(thread);
- if(task)
- ctx.cur_pid = chudxnu_pid_for_task(task);
+ task_t task = get_threadtask(thread);
- /* decode the chud bits so we know what to sample */
- t_chud = kperf_get_thread_bits(thread);
-
- if (t_chud & T_AST_NAME)
- sample_what |= SAMPLER_TINFOEX;
-
- if (t_chud & T_AST_CALLSTACK)
- sample_what |= SAMPLER_USTACK;
+ if (task_did_exec(task) || task_is_exec_copy(task)) {
+ BUF_INFO(PERF_AST_HNDLR | DBG_FUNC_END, SAMPLE_CONTINUE);
+ return;
+ }
- /* do the sample, just of the user stuff */
- r = kperf_sample_internal( sbuf, &ctx, sample_what, FALSE );
+ struct kperf_context ctx = {
+ .cur_thread = thread,
+ .cur_task = task,
+ .cur_pid = task_pid(task),
+ };
- /* free it again */
- kfree( sbuf, sizeof(*sbuf) );
+ unsigned int sample_what = 0;
+ if (ast & T_KPERF_AST_DISPATCH) {
+ sample_what |= SAMPLER_TH_DISPATCH;
+ }
+ if (ast & T_KPERF_AST_CALLSTACK) {
+ /* TH_INFO for backwards compatibility */
+ sample_what |= SAMPLER_USTACK | SAMPLER_TH_INFO;
+ }
-error:
- BUF_INFO1(PERF_AST_HNDLR | DBG_FUNC_END, r);
+ sbuf.ucallstack.kpuc_nframes =
+ T_KPERF_GET_CALLSTACK_DEPTH(ast) ?: MAX_UCALLSTACK_FRAMES;
+ unsigned int actionid = T_KPERF_GET_ACTIONID(ast);
+ kperf_sample_user_internal(&sbuf, &ctx, actionid, sample_what);
+ BUF_INFO(PERF_AST_HNDLR | DBG_FUNC_END);
}
-/* register AST bits */
int
-kperf_ast_pend( thread_t cur_thread, uint32_t check_bits,
- uint32_t set_bits )
+kperf_ast_pend(thread_t thread, uint32_t set_flags, unsigned int set_actionid)
{
- /* pend on the thread */
- uint32_t t_chud, set_done = 0;
-
- /* can only pend on the current thread */
- if( cur_thread != chudxnu_current_thread() )
- panic("pending to non-current thread");
-
- /* get our current bits */
- t_chud = kperf_get_thread_bits(cur_thread);
-
- /* see if it's already been done or pended */
- if( !(t_chud & check_bits ) )
- {
- /* set the bit on the thread */
- t_chud |= set_bits;
- kperf_set_thread_bits(cur_thread, t_chud);
+ if (thread != current_thread()) {
+ panic("kperf: pending AST to non-current thread");
+ }
+
+ uint32_t ast = thread->kperf_ast;
+ unsigned int actionid = T_KPERF_GET_ACTIONID(ast);
+ uint32_t flags = ast & T_KPERF_AST_ALL;
+
+ if ((flags | set_flags) != flags || actionid != set_actionid) {
+ ast &= ~T_KPERF_SET_ACTIONID(actionid);
+ ast |= T_KPERF_SET_ACTIONID(set_actionid);
+ ast |= set_flags;
+
+ thread->kperf_ast = ast;
/* set the actual AST */
- kperf_set_thread_ast( cur_thread );
+ act_set_kperf(thread);
+ return 1;
+ }
- set_done = 1;
+ return 0;
+}
+
+void
+kperf_ast_set_callstack_depth(thread_t thread, uint32_t depth)
+{
+ uint32_t ast = thread->kperf_ast;
+ uint32_t existing_depth = T_KPERF_GET_CALLSTACK_DEPTH(ast);
+ if (existing_depth < depth) {
+ ast &= ~T_KPERF_SET_CALLSTACK_DEPTH(existing_depth);
+ ast |= T_KPERF_SET_CALLSTACK_DEPTH(depth);
+ thread->kperf_ast = ast;
}
+}
- return set_done;
+int
+kperf_kdbg_cswitch_get(void)
+{
+ return kperf_kdebug_cswitch;
+}
+
+int
+kperf_kdbg_cswitch_set(int newval)
+{
+ kperf_kdebug_cswitch = newval;
+ kperf_on_cpu_update();
-// BUF_INFO3( dbg_code, (uintptr_t)cur_thread, t_chud, set_done );
+ return 0;
}
-unsigned
+/*
+ * Action configuration
+ */
+unsigned int
kperf_action_get_count(void)
{
return actionc;
}
int
-kperf_action_set_samplers( unsigned actionid, uint32_t samplers )
+kperf_action_set_samplers(unsigned actionid, uint32_t samplers)
+{
+ if ((actionid > actionc) || (actionid == 0)) {
+ return EINVAL;
+ }
+
+ /* disallow both CPU and thread counters to be sampled in the same
+ * action */
+ if ((samplers & SAMPLER_PMC_THREAD) && (samplers & SAMPLER_PMC_CPU)) {
+ return EINVAL;
+ }
+
+ actionv[actionid - 1].sample = samplers;
+
+ return 0;
+}
+
+int
+kperf_action_get_samplers(unsigned actionid, uint32_t *samplers_out)
{
- if( actionid >= actionc )
+ if ((actionid > actionc)) {
return EINVAL;
+ }
- actionv[actionid].sample = samplers;
+ if (actionid == 0) {
+ *samplers_out = 0; /* "NULL" action */
+ } else {
+ *samplers_out = actionv[actionid - 1].sample;
+ }
return 0;
}
int
-kperf_action_get_samplers( unsigned actionid, uint32_t *samplers_out )
+kperf_action_set_userdata(unsigned actionid, uint32_t userdata)
{
- if( actionid >= actionc )
+ if ((actionid > actionc) || (actionid == 0)) {
return EINVAL;
+ }
- *samplers_out = actionv[actionid].sample;
+ actionv[actionid - 1].userdata = userdata;
return 0;
}
+int
+kperf_action_get_userdata(unsigned actionid, uint32_t *userdata_out)
+{
+ if ((actionid > actionc)) {
+ return EINVAL;
+ }
+
+ if (actionid == 0) {
+ *userdata_out = 0; /* "NULL" action */
+ } else {
+ *userdata_out = actionv[actionid - 1].userdata;
+ }
+
+ return 0;
+}
+
+int
+kperf_action_set_filter(unsigned actionid, int pid)
+{
+ if ((actionid > actionc) || (actionid == 0)) {
+ return EINVAL;
+ }
+
+ actionv[actionid - 1].pid_filter = pid;
+
+ return 0;
+}
+
+int
+kperf_action_get_filter(unsigned actionid, int *pid_out)
+{
+ if ((actionid > actionc)) {
+ return EINVAL;
+ }
+
+ if (actionid == 0) {
+ *pid_out = -1; /* "NULL" action */
+ } else {
+ *pid_out = actionv[actionid - 1].pid_filter;
+ }
+
+ return 0;
+}
+
+void
+kperf_action_reset(void)
+{
+ for (unsigned int i = 0; i < actionc; i++) {
+ kperf_action_set_samplers(i + 1, 0);
+ kperf_action_set_userdata(i + 1, 0);
+ kperf_action_set_filter(i + 1, -1);
+ kperf_action_set_ucallstack_depth(i + 1, MAX_UCALLSTACK_FRAMES);
+ kperf_action_set_kcallstack_depth(i + 1, MAX_KCALLSTACK_FRAMES);
+ }
+}
+
int
kperf_action_set_count(unsigned count)
{
unsigned old_count;
/* easy no-op */
- if( count == actionc )
+ if (count == actionc) {
return 0;
+ }
/* TODO: allow shrinking? */
- if( count < actionc )
+ if (count < actionc) {
return EINVAL;
+ }
/* cap it for good measure */
- if( count > ACTION_MAX )
+ if (count > ACTION_MAX) {
return EINVAL;
+ }
/* creating the action arror for the first time. create a few
* more things, too.
*/
- if( actionc == 0 )
- {
- int r;
- r = kperf_init();
-
- if( r != 0 )
- return r;
+ if (actionc == 0) {
+ kperf_setup();
}
/* create a new array */
- new_actionv = kalloc( count * sizeof(*new_actionv) );
- if( new_actionv == NULL )
+ new_actionv = kalloc_tag(count * sizeof(*new_actionv), VM_KERN_MEMORY_DIAG);
+ if (new_actionv == NULL) {
return ENOMEM;
+ }
old_actionv = actionv;
old_count = actionc;
- if( old_actionv != NULL )
- bcopy( actionv, new_actionv, actionc * sizeof(*actionv) );
+ if (old_actionv != NULL) {
+ memcpy(new_actionv, actionv, actionc * sizeof(*actionv));
+ }
+
+ memset(&(new_actionv[actionc]), 0, (count - old_count) * sizeof(*actionv));
- bzero( &new_actionv[actionc], (count - old_count) * sizeof(*actionv) );
+ for (unsigned int i = old_count; i < count; i++) {
+ new_actionv[i].pid_filter = -1;
+ new_actionv[i].ucallstack_depth = MAX_UCALLSTACK_FRAMES;
+ new_actionv[i].kcallstack_depth = MAX_KCALLSTACK_FRAMES;
+ }
actionv = new_actionv;
actionc = count;
- if( old_actionv != NULL )
- kfree( old_actionv, old_count * sizeof(*actionv) );
+ if (old_actionv != NULL) {
+ kfree(old_actionv, old_count * sizeof(*actionv));
+ }
+
+ return 0;
+}
+
+int
+kperf_action_set_ucallstack_depth(unsigned action_id, uint32_t depth)
+{
+ if ((action_id > actionc) || (action_id == 0)) {
+ return EINVAL;
+ }
+
+ if (depth > MAX_UCALLSTACK_FRAMES) {
+ return EINVAL;
+ }
+ if (depth < 2) {
+ return EINVAL;
+ }
+
+ actionv[action_id - 1].ucallstack_depth = depth;
+
+ return 0;
+}
- printf( "kperf: done the alloc\n" );
+int
+kperf_action_set_kcallstack_depth(unsigned action_id, uint32_t depth)
+{
+ if ((action_id > actionc) || (action_id == 0)) {
+ return EINVAL;
+ }
+
+ if (depth > MAX_KCALLSTACK_FRAMES) {
+ return EINVAL;
+ }
+ if (depth < 1) {
+ return EINVAL;
+ }
+
+ actionv[action_id - 1].kcallstack_depth = depth;
+
+ return 0;
+}
+
+int
+kperf_action_get_ucallstack_depth(unsigned action_id, uint32_t * depth_out)
+{
+ if ((action_id > actionc)) {
+ return EINVAL;
+ }
+
+ assert(depth_out);
+
+ if (action_id == 0) {
+ *depth_out = MAX_UCALLSTACK_FRAMES;
+ } else {
+ *depth_out = actionv[action_id - 1].ucallstack_depth;
+ }
+
+ return 0;
+}
+
+int
+kperf_action_get_kcallstack_depth(unsigned action_id, uint32_t * depth_out)
+{
+ if ((action_id > actionc)) {
+ return EINVAL;
+ }
+
+ assert(depth_out);
+
+ if (action_id == 0) {
+ *depth_out = MAX_KCALLSTACK_FRAMES;
+ } else {
+ *depth_out = actionv[action_id - 1].kcallstack_depth;
+ }
return 0;
}
projects / apple / xnu.git / blobdiff