* 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 <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 <kperf/action.h>
#include <kperf/ast.h>
#include <kperf/kdebug_trigger.h>
#include <kperf/kperf.h>
#include <kperf/kperf_kpc.h>
-#include <kperf/kperf_timer.h>
+#include <kperf/kptimer.h>
#include <kperf/pet.h>
#include <kperf/sample.h>
#include <kperf/thread_samplers.h>
#define ACTION_MAX (32)
/* the list of different actions to take */
-struct action
-{
+struct action {
uint32_t sample;
uint32_t ucallstack_depth;
uint32_t kcallstack_depth;
};
/* 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;
+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)
+{
+ 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);
+ }
+
+ boolean_t intren = ml_set_interrupts_enabled(FALSE);
+
+ /*
+ * No userdata or sample_flags for this one.
+ */
+ 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, uint32_t ucallstack_depth)
+ 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;
- /* not much point continuing here, but what to do ? return
- * Shutdown? cut a tracepoint and continue?
- */
if (sample_what == 0) {
return SAMPLE_CONTINUE;
}
sample_what &= ~(SAMPLER_KSTACK | SAMPLER_USTACK);
}
- context->cur_thread->kperf_pet_gen = kperf_pet_gen;
- boolean_t is_kernel = (context->cur_pid == 0);
+ if (sample_flags & SAMPLE_FLAG_ONLY_SYSTEM) {
+ sample_what &= SAMPLER_SYS_MEM;
+ }
- if (actionid && actionid <= actionc) {
- sbuf->kcallstack.nframes = actionv[actionid - 1].kcallstack_depth;
- } else {
- sbuf->kcallstack.nframes = MAX_CALLSTACK_FRAMES;
+ 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 (ucallstack_depth) {
- sbuf->ucallstack.nframes = ucallstack_depth;
+ if (!task_only) {
+ context->cur_thread->kperf_pet_gen =
+ os_atomic_load(&kppet_gencount, relaxed);
+ }
+ bool is_kernel = (context->cur_pid == 0);
+
+ if (actionid && actionid <= actionc) {
+ sbuf->kcallstack.kpkc_nframes =
+ actionv[actionid - 1].kcallstack_depth;
} else {
- sbuf->ucallstack.nframes = MAX_CALLSTACK_FRAMES;
+ sbuf->kcallstack.kpkc_nframes = MAX_KCALLSTACK_FRAMES;
}
- sbuf->kcallstack.flags = CALLSTACK_VALID;
- sbuf->ucallstack.flags = CALLSTACK_VALID;
+ ucallstack_depth = ucallstack_depth ?: MAX_UCALLSTACK_FRAMES;
+ sbuf->kcallstack.kpkc_flags = 0;
+ sbuf->usample.ucallstack.kpuc_flags = 0;
- /* an event occurred. Sample everything and dump it in a
- * buffer.
- */
-
- /* collect data from samplers */
if (sample_what & SAMPLER_TH_INFO) {
kperf_thread_info_sample(&sbuf->th_info, context);
- /* See if we should drop idle thread samples */
if (!(sample_flags & SAMPLE_FLAG_IDLE_THREADS)) {
if (sbuf->th_info.kpthi_runmode & 0x40) {
- return SAMPLE_CONTINUE;
+ on_idle_thread = true;
+ goto log_sample;
}
}
}
if (sample_what & SAMPLER_KSTACK) {
if (sample_flags & SAMPLE_FLAG_CONTINUATION) {
kperf_continuation_sample(&(sbuf->kcallstack), context);
- /* outside of interrupt context, backtrace the current thread */
} 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(&(sbuf->tk_snapshot), context);
+ kperf_task_snapshot_sample(context->cur_task, &(sbuf->tk_snapshot));
}
- /* sensitive ones */
if (!is_kernel) {
if (sample_what & SAMPLER_MEMINFO) {
- kperf_meminfo_sample(&(sbuf->meminfo), context);
+ 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, sbuf->ucallstack.nframes);
- }
-
- if (sample_what & SAMPLER_TH_DISPATCH) {
- pended_th_dispatch = kperf_thread_dispatch_pend(context);
- }
- } else {
- if (sample_what & SAMPLER_USTACK) {
- kperf_ucallstack_sample(&(sbuf->ucallstack), context);
+ pended_ucallstack = kperf_ucallstack_pend(context,
+ ucallstack_depth, actionid);
}
if (sample_what & SAMPLER_TH_DISPATCH) {
- kperf_thread_dispatch_sample(&(sbuf->th_dispatch), context);
+ pended_th_dispatch =
+ kperf_thread_dispatch_pend(context, actionid);
}
}
}
kperf_kpc_cpu_sample(&(sbuf->kpcdata), sample_what);
}
+log_sample:
/* lookup the user tag, if any */
- uint32_t userdata;
if (actionid && (actionid <= actionc)) {
userdata = actionv[actionid - 1].userdata;
- } else {
- userdata = actionid;
}
/* avoid logging if this sample only pended samples */
if (sample_flags & SAMPLE_FLAG_PEND_USER &&
- !(sample_what & ~(SAMPLER_USTACK | SAMPLER_TH_DISPATCH)))
- {
+ !(sample_what & ~(SAMPLER_USTACK | SAMPLER_TH_DISPATCH))) {
return SAMPLE_CONTINUE;
}
boolean_t enabled = ml_set_interrupts_enabled(FALSE);
BUF_DATA(PERF_GEN_EVENT | DBG_FUNC_START, sample_what,
- actionid, userdata, sample_flags);
+ actionid, userdata, sample_flags);
+
+ 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_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 (pended_th_dispatch) {
BUF_INFO(PERF_TI_DISPPEND);
}
- } else {
- 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_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));
}
- BUF_DATA(PERF_GEN_EVENT | DBG_FUNC_END, sample_what);
+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, unsigned sample_flags)
+ struct kperf_context *context,
+ unsigned actionid, unsigned sample_flags)
{
/* work out what to sample, if anything */
if ((actionid > actionc) || (actionid == 0)) {
/* the samplers to run */
unsigned int sample_what = actionv[actionid - 1].sample;
+ unsigned int ucallstack_depth = actionv[actionid - 1].ucallstack_depth;
/* do the actual sample operation */
return kperf_sample_internal(sbuf, context, sample_what,
- sample_flags, actionid,
- actionv[actionid - 1].ucallstack_depth);
+ sample_flags, actionid, ucallstack_depth);
}
void
kperf_kdebug_handler(uint32_t debugid, uintptr_t *starting_fp)
{
uint32_t sample_flags = SAMPLE_FLAG_PEND_USER;
- struct kperf_context ctx;
struct kperf_sample *sample = NULL;
kern_return_t kr = KERN_SUCCESS;
int s;
BUF_VERB(PERF_KDBG_HNDLR | DBG_FUNC_START, debugid);
- ctx.cur_thread = current_thread();
- ctx.cur_pid = task_pid(get_threadtask(ctx.cur_thread));
- ctx.trigger_type = TRIGGER_TYPE_KDEBUG;
- ctx.trigger_id = 0;
+ 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);
void
kperf_thread_ast_handler(thread_t thread)
{
- BUF_INFO(PERF_AST_HNDLR | DBG_FUNC_START, thread, kperf_get_thread_flags(thread));
+ uint32_t ast = thread->kperf_ast;
- /* ~2KB of the stack for the sample since this is called from AST */
- struct kperf_sample sbuf;
- memset(&sbuf, 0, sizeof(struct kperf_sample));
+ BUF_INFO(PERF_AST_HNDLR | DBG_FUNC_START, thread, ast);
+
+ struct kperf_usample sbuf = {};
task_t task = get_threadtask(thread);
- /* make a context, take a sample */
- struct kperf_context ctx;
- ctx.cur_thread = thread;
- ctx.cur_pid = task_pid(task);
+ if (task_did_exec(task) || task_is_exec_copy(task)) {
+ BUF_INFO(PERF_AST_HNDLR | DBG_FUNC_END, SAMPLE_CONTINUE);
+ return;
+ }
- /* decode the flags to determine what to sample */
- unsigned int sample_what = 0;
- uint32_t flags = kperf_get_thread_flags(thread);
+ struct kperf_context ctx = {
+ .cur_thread = thread,
+ .cur_task = task,
+ .cur_pid = task_pid(task),
+ };
- if (flags & T_KPERF_AST_DISPATCH) {
+ unsigned int sample_what = 0;
+ if (ast & T_KPERF_AST_DISPATCH) {
sample_what |= SAMPLER_TH_DISPATCH;
}
- if (flags & T_KPERF_AST_CALLSTACK) {
- sample_what |= SAMPLER_USTACK;
- sample_what |= SAMPLER_TH_INFO;
+ if (ast & T_KPERF_AST_CALLSTACK) {
+ /* TH_INFO for backwards compatibility */
+ sample_what |= SAMPLER_USTACK | SAMPLER_TH_INFO;
}
- uint32_t ucallstack_depth = T_KPERF_GET_CALLSTACK_DEPTH(flags);
-
- int r = kperf_sample_internal(&sbuf, &ctx, sample_what, 0, 0, ucallstack_depth);
+ 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, r);
+ BUF_INFO(PERF_AST_HNDLR | DBG_FUNC_END);
}
-/* register AST bits */
int
-kperf_ast_pend(thread_t thread, uint32_t set_flags)
+kperf_ast_pend(thread_t thread, uint32_t set_flags, unsigned int set_actionid)
{
- /* can only pend on the current thread */
if (thread != current_thread()) {
- panic("pending to non-current thread");
+ panic("kperf: pending AST to non-current thread");
}
- /* get our current bits */
- uint32_t flags = kperf_get_thread_flags(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;
- /* see if it's already been done or pended */
- if (!(flags & set_flags)) {
- /* set the bit on the thread */
- flags |= set_flags;
- kperf_set_thread_flags(thread, flags);
+ thread->kperf_ast = ast;
/* set the actual AST */
act_set_kperf(thread);
void
kperf_ast_set_callstack_depth(thread_t thread, uint32_t depth)
{
- uint32_t ast_flags = kperf_get_thread_flags(thread);
- uint32_t existing_callstack_depth = T_KPERF_GET_CALLSTACK_DEPTH(ast_flags);
-
- if (existing_callstack_depth != depth) {
- ast_flags &= ~T_KPERF_SET_CALLSTACK_DEPTH(depth);
- ast_flags |= T_KPERF_SET_CALLSTACK_DEPTH(depth);
-
- kperf_set_thread_flags(thread, ast_flags);
+ 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;
}
}
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_CALLSTACK_FRAMES);
- kperf_action_set_kcallstack_depth(i + 1, MAX_CALLSTACK_FRAMES);
+ kperf_action_set_ucallstack_depth(i + 1, MAX_UCALLSTACK_FRAMES);
+ kperf_action_set_kcallstack_depth(i + 1, MAX_KCALLSTACK_FRAMES);
}
}
* more things, too.
*/
if (actionc == 0) {
- int r;
- if ((r = kperf_init())) {
- return r;
- }
+ kperf_setup();
}
/* create a new array */
for (unsigned int i = old_count; i < count; i++) {
new_actionv[i].pid_filter = -1;
- new_actionv[i].ucallstack_depth = MAX_CALLSTACK_FRAMES;
- new_actionv[i].kcallstack_depth = MAX_CALLSTACK_FRAMES;
+ new_actionv[i].ucallstack_depth = MAX_UCALLSTACK_FRAMES;
+ new_actionv[i].kcallstack_depth = MAX_KCALLSTACK_FRAMES;
}
actionv = new_actionv;
return EINVAL;
}
- if (depth > MAX_CALLSTACK_FRAMES) {
+ if (depth > MAX_UCALLSTACK_FRAMES) {
+ return EINVAL;
+ }
+ if (depth < 2) {
return EINVAL;
}
return EINVAL;
}
- if (depth > MAX_CALLSTACK_FRAMES) {
+ if (depth > MAX_KCALLSTACK_FRAMES) {
+ return EINVAL;
+ }
+ if (depth < 1) {
return EINVAL;
}
assert(depth_out);
if (action_id == 0) {
- *depth_out = MAX_CALLSTACK_FRAMES;
+ *depth_out = MAX_UCALLSTACK_FRAMES;
} else {
*depth_out = actionv[action_id - 1].ucallstack_depth;
}
assert(depth_out);
if (action_id == 0) {
- *depth_out = MAX_CALLSTACK_FRAMES;
+ *depth_out = MAX_KCALLSTACK_FRAMES;
} else {
*depth_out = actionv[action_id - 1].kcallstack_depth;
}
projects / apple / xnu.git / blobdiff