unsigned int pmu_type;
};
+struct cs_etm_traceid_queue {
+ u8 trace_chan_id;
+ u64 period_instructions;
+ size_t last_branch_pos;
+ union perf_event *event_buf;
+ struct thread *thread;
+ struct branch_stack *last_branch;
+ struct branch_stack *last_branch_rb;
+ struct cs_etm_packet *prev_packet;
+ struct cs_etm_packet *packet;
+ struct cs_etm_packet_queue packet_queue;
+};
+
struct cs_etm_queue {
struct cs_etm_auxtrace *etm;
- struct thread *thread;
struct cs_etm_decoder *decoder;
struct auxtrace_buffer *buffer;
- union perf_event *event_buf;
unsigned int queue_nr;
pid_t pid, tid;
- int cpu;
u64 offset;
- u64 period_instructions;
- struct branch_stack *last_branch;
- struct branch_stack *last_branch_rb;
- size_t last_branch_pos;
- struct cs_etm_packet *prev_packet;
- struct cs_etm_packet *packet;
const unsigned char *buf;
size_t buf_len, buf_used;
+ struct cs_etm_traceid_queue *traceid_queues;
};
static int cs_etm__update_queues(struct cs_etm_auxtrace *etm);
return 0;
}
+static void cs_etm__clear_packet_queue(struct cs_etm_packet_queue *queue)
+{
+ int i;
+
+ queue->head = 0;
+ queue->tail = 0;
+ queue->packet_count = 0;
+ for (i = 0; i < CS_ETM_PACKET_MAX_BUFFER; i++) {
+ queue->packet_buffer[i].isa = CS_ETM_ISA_UNKNOWN;
+ queue->packet_buffer[i].start_addr = CS_ETM_INVAL_ADDR;
+ queue->packet_buffer[i].end_addr = CS_ETM_INVAL_ADDR;
+ queue->packet_buffer[i].instr_count = 0;
+ queue->packet_buffer[i].last_instr_taken_branch = false;
+ queue->packet_buffer[i].last_instr_size = 0;
+ queue->packet_buffer[i].last_instr_type = 0;
+ queue->packet_buffer[i].last_instr_subtype = 0;
+ queue->packet_buffer[i].last_instr_cond = 0;
+ queue->packet_buffer[i].flags = 0;
+ queue->packet_buffer[i].exception_number = UINT32_MAX;
+ queue->packet_buffer[i].trace_chan_id = UINT8_MAX;
+ queue->packet_buffer[i].cpu = INT_MIN;
+ }
+}
+
+static int cs_etm__init_traceid_queue(struct cs_etm_queue *etmq,
+ struct cs_etm_traceid_queue *tidq,
+ u8 trace_chan_id)
+{
+ int rc = -ENOMEM;
+ struct cs_etm_auxtrace *etm = etmq->etm;
+
+ cs_etm__clear_packet_queue(&tidq->packet_queue);
+
+ tidq->trace_chan_id = trace_chan_id;
+
+ tidq->packet = zalloc(sizeof(struct cs_etm_packet));
+ if (!tidq->packet)
+ goto out;
+
+ tidq->prev_packet = zalloc(sizeof(struct cs_etm_packet));
+ if (!tidq->prev_packet)
+ goto out_free;
+
+ if (etm->synth_opts.last_branch) {
+ size_t sz = sizeof(struct branch_stack);
+
+ sz += etm->synth_opts.last_branch_sz *
+ sizeof(struct branch_entry);
+ tidq->last_branch = zalloc(sz);
+ if (!tidq->last_branch)
+ goto out_free;
+ tidq->last_branch_rb = zalloc(sz);
+ if (!tidq->last_branch_rb)
+ goto out_free;
+ }
+
+ tidq->event_buf = malloc(PERF_SAMPLE_MAX_SIZE);
+ if (!tidq->event_buf)
+ goto out_free;
+
+ return 0;
+
+out_free:
+ zfree(&tidq->last_branch_rb);
+ zfree(&tidq->last_branch);
+ zfree(&tidq->prev_packet);
+ zfree(&tidq->packet);
+out:
+ return rc;
+}
+
+static struct cs_etm_traceid_queue
+*cs_etm__etmq_get_traceid_queue(struct cs_etm_queue *etmq, u8 trace_chan_id)
+{
+ struct cs_etm_traceid_queue *tidq;
+ struct cs_etm_auxtrace *etm = etmq->etm;
+
+ if (!etm->timeless_decoding)
+ return NULL;
+
+ tidq = etmq->traceid_queues;
+
+ if (tidq)
+ return tidq;
+
+ tidq = malloc(sizeof(*tidq));
+ if (!tidq)
+ return NULL;
+
+ memset(tidq, 0, sizeof(*tidq));
+
+ if (cs_etm__init_traceid_queue(etmq, tidq, trace_chan_id))
+ goto out_free;
+
+ etmq->traceid_queues = tidq;
+
+ return etmq->traceid_queues;
+
+out_free:
+ free(tidq);
+
+ return NULL;
+}
+
+struct cs_etm_packet_queue
+*cs_etm__etmq_get_packet_queue(struct cs_etm_queue *etmq, u8 trace_chan_id)
+{
+ struct cs_etm_traceid_queue *tidq;
+
+ tidq = cs_etm__etmq_get_traceid_queue(etmq, trace_chan_id);
+ if (tidq)
+ return &tidq->packet_queue;
+
+ return NULL;
+}
+
static void cs_etm__packet_dump(const char *pkt_string)
{
const char *color = PERF_COLOR_BLUE;
if (!etmq)
return;
- thread__zput(etmq->thread);
+ thread__zput(etmq->traceid_queues->thread);
cs_etm_decoder__free(etmq->decoder);
- zfree(&etmq->event_buf);
- zfree(&etmq->last_branch);
- zfree(&etmq->last_branch_rb);
- zfree(&etmq->prev_packet);
- zfree(&etmq->packet);
+ zfree(&etmq->traceid_queues->event_buf);
+ zfree(&etmq->traceid_queues->last_branch);
+ zfree(&etmq->traceid_queues->last_branch_rb);
+ zfree(&etmq->traceid_queues->prev_packet);
+ zfree(&etmq->traceid_queues->packet);
+ zfree(&etmq->traceid_queues);
free(etmq);
}
machine = etmq->etm->machine;
cpumode = cs_etm__cpu_mode(etmq, address);
- thread = etmq->thread;
+ thread = etmq->traceid_queues->thread;
if (!thread) {
if (cpumode != PERF_RECORD_MISC_KERNEL)
return 0;
struct cs_etm_decoder_params d_params;
struct cs_etm_trace_params *t_params = NULL;
struct cs_etm_queue *etmq;
- size_t szp = sizeof(struct cs_etm_packet);
etmq = zalloc(sizeof(*etmq));
if (!etmq)
return NULL;
- etmq->packet = zalloc(szp);
- if (!etmq->packet)
- goto out_free;
-
- etmq->prev_packet = zalloc(szp);
- if (!etmq->prev_packet)
- goto out_free;
-
- if (etm->synth_opts.last_branch) {
- size_t sz = sizeof(struct branch_stack);
-
- sz += etm->synth_opts.last_branch_sz *
- sizeof(struct branch_entry);
- etmq->last_branch = zalloc(sz);
- if (!etmq->last_branch)
- goto out_free;
- etmq->last_branch_rb = zalloc(sz);
- if (!etmq->last_branch_rb)
- goto out_free;
- }
-
- etmq->event_buf = malloc(PERF_SAMPLE_MAX_SIZE);
- if (!etmq->event_buf)
- goto out_free;
-
/* Use metadata to fill in trace parameters for trace decoder */
t_params = zalloc(sizeof(*t_params) * etm->num_cpu);
out_free_decoder:
cs_etm_decoder__free(etmq->decoder);
out_free:
- zfree(&t_params);
- zfree(&etmq->event_buf);
- zfree(&etmq->last_branch);
- zfree(&etmq->last_branch_rb);
- zfree(&etmq->prev_packet);
- zfree(&etmq->packet);
free(etmq);
return NULL;
queue->priv = etmq;
etmq->etm = etm;
etmq->queue_nr = queue_nr;
- etmq->cpu = queue->cpu;
etmq->tid = queue->tid;
etmq->pid = -1;
etmq->offset = 0;
- etmq->period_instructions = 0;
out:
return ret;
return 0;
}
-static inline void cs_etm__copy_last_branch_rb(struct cs_etm_queue *etmq)
+static inline
+void cs_etm__copy_last_branch_rb(struct cs_etm_queue *etmq,
+ struct cs_etm_traceid_queue *tidq)
{
- struct branch_stack *bs_src = etmq->last_branch_rb;
- struct branch_stack *bs_dst = etmq->last_branch;
+ struct branch_stack *bs_src = tidq->last_branch_rb;
+ struct branch_stack *bs_dst = tidq->last_branch;
size_t nr = 0;
/*
* two steps. First, copy the branches from the most recently inserted
* branch ->last_branch_pos until the end of bs_src->entries buffer.
*/
- nr = etmq->etm->synth_opts.last_branch_sz - etmq->last_branch_pos;
+ nr = etmq->etm->synth_opts.last_branch_sz - tidq->last_branch_pos;
memcpy(&bs_dst->entries[0],
- &bs_src->entries[etmq->last_branch_pos],
+ &bs_src->entries[tidq->last_branch_pos],
sizeof(struct branch_entry) * nr);
/*
if (bs_src->nr >= etmq->etm->synth_opts.last_branch_sz) {
memcpy(&bs_dst->entries[nr],
&bs_src->entries[0],
- sizeof(struct branch_entry) * etmq->last_branch_pos);
+ sizeof(struct branch_entry) * tidq->last_branch_pos);
}
}
-static inline void cs_etm__reset_last_branch_rb(struct cs_etm_queue *etmq)
+static inline
+void cs_etm__reset_last_branch_rb(struct cs_etm_traceid_queue *tidq)
{
- etmq->last_branch_pos = 0;
- etmq->last_branch_rb->nr = 0;
+ tidq->last_branch_pos = 0;
+ tidq->last_branch_rb->nr = 0;
}
static inline int cs_etm__t32_instr_size(struct cs_etm_queue *etmq,
return packet->start_addr + offset * 4;
}
-static void cs_etm__update_last_branch_rb(struct cs_etm_queue *etmq)
+static void cs_etm__update_last_branch_rb(struct cs_etm_queue *etmq,
+ struct cs_etm_traceid_queue *tidq)
{
- struct branch_stack *bs = etmq->last_branch_rb;
+ struct branch_stack *bs = tidq->last_branch_rb;
struct branch_entry *be;
/*
* buffer down. After writing the first element of the stack, move the
* insert position back to the end of the buffer.
*/
- if (!etmq->last_branch_pos)
- etmq->last_branch_pos = etmq->etm->synth_opts.last_branch_sz;
+ if (!tidq->last_branch_pos)
+ tidq->last_branch_pos = etmq->etm->synth_opts.last_branch_sz;
- etmq->last_branch_pos -= 1;
+ tidq->last_branch_pos -= 1;
- be = &bs->entries[etmq->last_branch_pos];
- be->from = cs_etm__last_executed_instr(etmq->prev_packet);
- be->to = cs_etm__first_executed_instr(etmq->packet);
+ be = &bs->entries[tidq->last_branch_pos];
+ be->from = cs_etm__last_executed_instr(tidq->prev_packet);
+ be->to = cs_etm__first_executed_instr(tidq->packet);
/* No support for mispredict */
be->flags.mispred = 0;
be->flags.predicted = 1;
static void cs_etm__set_pid_tid_cpu(struct cs_etm_auxtrace *etm,
struct auxtrace_queue *queue)
{
+ struct cs_etm_traceid_queue *tidq;
struct cs_etm_queue *etmq = queue->priv;
+ tidq = cs_etm__etmq_get_traceid_queue(etmq, CS_ETM_PER_THREAD_TRACEID);
+
/* CPU-wide tracing isn't supported yet */
if (queue->tid == -1)
return;
- if ((!etmq->thread) && (etmq->tid != -1))
- etmq->thread = machine__find_thread(etm->machine, -1,
+ if ((!tidq->thread) && (etmq->tid != -1))
+ tidq->thread = machine__find_thread(etm->machine, -1,
etmq->tid);
- if (etmq->thread) {
- etmq->pid = etmq->thread->pid_;
- if (queue->cpu == -1)
- etmq->cpu = etmq->thread->cpu;
- }
+ if (tidq->thread)
+ etmq->pid = tidq->thread->pid_;
}
static int cs_etm__synth_instruction_sample(struct cs_etm_queue *etmq,
+ struct cs_etm_traceid_queue *tidq,
u64 addr, u64 period)
{
int ret = 0;
struct cs_etm_auxtrace *etm = etmq->etm;
- union perf_event *event = etmq->event_buf;
+ union perf_event *event = tidq->event_buf;
struct perf_sample sample = {.ip = 0,};
event->sample.header.type = PERF_RECORD_SAMPLE;
sample.id = etmq->etm->instructions_id;
sample.stream_id = etmq->etm->instructions_id;
sample.period = period;
- sample.cpu = etmq->packet->cpu;
- sample.flags = etmq->prev_packet->flags;
+ sample.cpu = tidq->packet->cpu;
+ sample.flags = tidq->prev_packet->flags;
sample.insn_len = 1;
sample.cpumode = event->sample.header.misc;
if (etm->synth_opts.last_branch) {
- cs_etm__copy_last_branch_rb(etmq);
- sample.branch_stack = etmq->last_branch;
+ cs_etm__copy_last_branch_rb(etmq, tidq);
+ sample.branch_stack = tidq->last_branch;
}
if (etm->synth_opts.inject) {
ret);
if (etm->synth_opts.last_branch)
- cs_etm__reset_last_branch_rb(etmq);
+ cs_etm__reset_last_branch_rb(tidq);
return ret;
}
* The cs etm packet encodes an instruction range between a branch target
* and the next taken branch. Generate sample accordingly.
*/
-static int cs_etm__synth_branch_sample(struct cs_etm_queue *etmq)
+static int cs_etm__synth_branch_sample(struct cs_etm_queue *etmq,
+ struct cs_etm_traceid_queue *tidq)
{
int ret = 0;
struct cs_etm_auxtrace *etm = etmq->etm;
struct perf_sample sample = {.ip = 0,};
- union perf_event *event = etmq->event_buf;
+ union perf_event *event = tidq->event_buf;
struct dummy_branch_stack {
u64 nr;
struct branch_entry entries;
} dummy_bs;
u64 ip;
- ip = cs_etm__last_executed_instr(etmq->prev_packet);
+ ip = cs_etm__last_executed_instr(tidq->prev_packet);
event->sample.header.type = PERF_RECORD_SAMPLE;
event->sample.header.misc = cs_etm__cpu_mode(etmq, ip);
sample.ip = ip;
sample.pid = etmq->pid;
sample.tid = etmq->tid;
- sample.addr = cs_etm__first_executed_instr(etmq->packet);
+ sample.addr = cs_etm__first_executed_instr(tidq->packet);
sample.id = etmq->etm->branches_id;
sample.stream_id = etmq->etm->branches_id;
sample.period = 1;
- sample.cpu = etmq->packet->cpu;
- sample.flags = etmq->prev_packet->flags;
+ sample.cpu = tidq->packet->cpu;
+ sample.flags = tidq->prev_packet->flags;
sample.cpumode = event->sample.header.misc;
/*
return 0;
}
-static int cs_etm__sample(struct cs_etm_queue *etmq)
+static int cs_etm__sample(struct cs_etm_queue *etmq,
+ struct cs_etm_traceid_queue *tidq)
{
struct cs_etm_auxtrace *etm = etmq->etm;
struct cs_etm_packet *tmp;
int ret;
- u64 instrs_executed = etmq->packet->instr_count;
+ u64 instrs_executed = tidq->packet->instr_count;
- etmq->period_instructions += instrs_executed;
+ tidq->period_instructions += instrs_executed;
/*
* Record a branch when the last instruction in
* PREV_PACKET is a branch.
*/
if (etm->synth_opts.last_branch &&
- etmq->prev_packet->sample_type == CS_ETM_RANGE &&
- etmq->prev_packet->last_instr_taken_branch)
- cs_etm__update_last_branch_rb(etmq);
+ tidq->prev_packet->sample_type == CS_ETM_RANGE &&
+ tidq->prev_packet->last_instr_taken_branch)
+ cs_etm__update_last_branch_rb(etmq, tidq);
if (etm->sample_instructions &&
- etmq->period_instructions >= etm->instructions_sample_period) {
+ tidq->period_instructions >= etm->instructions_sample_period) {
/*
* Emit instruction sample periodically
* TODO: allow period to be defined in cycles and clock time
*/
/* Get number of instructions executed after the sample point */
- u64 instrs_over = etmq->period_instructions -
+ u64 instrs_over = tidq->period_instructions -
etm->instructions_sample_period;
/*
* executed, but PC has not advanced to next instruction)
*/
u64 offset = (instrs_executed - instrs_over - 1);
- u64 addr = cs_etm__instr_addr(etmq, etmq->packet, offset);
+ u64 addr = cs_etm__instr_addr(etmq, tidq->packet, offset);
ret = cs_etm__synth_instruction_sample(
- etmq, addr, etm->instructions_sample_period);
+ etmq, tidq, addr, etm->instructions_sample_period);
if (ret)
return ret;
/* Carry remaining instructions into next sample period */
- etmq->period_instructions = instrs_over;
+ tidq->period_instructions = instrs_over;
}
if (etm->sample_branches) {
bool generate_sample = false;
/* Generate sample for tracing on packet */
- if (etmq->prev_packet->sample_type == CS_ETM_DISCONTINUITY)
+ if (tidq->prev_packet->sample_type == CS_ETM_DISCONTINUITY)
generate_sample = true;
/* Generate sample for branch taken packet */
- if (etmq->prev_packet->sample_type == CS_ETM_RANGE &&
- etmq->prev_packet->last_instr_taken_branch)
+ if (tidq->prev_packet->sample_type == CS_ETM_RANGE &&
+ tidq->prev_packet->last_instr_taken_branch)
generate_sample = true;
if (generate_sample) {
- ret = cs_etm__synth_branch_sample(etmq);
+ ret = cs_etm__synth_branch_sample(etmq, tidq);
if (ret)
return ret;
}
* Swap PACKET with PREV_PACKET: PACKET becomes PREV_PACKET for
* the next incoming packet.
*/
- tmp = etmq->packet;
- etmq->packet = etmq->prev_packet;
- etmq->prev_packet = tmp;
+ tmp = tidq->packet;
+ tidq->packet = tidq->prev_packet;
+ tidq->prev_packet = tmp;
}
return 0;
}
-static int cs_etm__exception(struct cs_etm_queue *etmq)
+static int cs_etm__exception(struct cs_etm_traceid_queue *tidq)
{
/*
* When the exception packet is inserted, whether the last instruction
* swap PACKET with PREV_PACKET. This keeps PREV_PACKET to be useful
* for generating instruction and branch samples.
*/
- if (etmq->prev_packet->sample_type == CS_ETM_RANGE)
- etmq->prev_packet->last_instr_taken_branch = true;
+ if (tidq->prev_packet->sample_type == CS_ETM_RANGE)
+ tidq->prev_packet->last_instr_taken_branch = true;
return 0;
}
-static int cs_etm__flush(struct cs_etm_queue *etmq)
+static int cs_etm__flush(struct cs_etm_queue *etmq,
+ struct cs_etm_traceid_queue *tidq)
{
int err = 0;
struct cs_etm_auxtrace *etm = etmq->etm;
struct cs_etm_packet *tmp;
/* Handle start tracing packet */
- if (etmq->prev_packet->sample_type == CS_ETM_EMPTY)
+ if (tidq->prev_packet->sample_type == CS_ETM_EMPTY)
goto swap_packet;
if (etmq->etm->synth_opts.last_branch &&
- etmq->prev_packet->sample_type == CS_ETM_RANGE) {
+ tidq->prev_packet->sample_type == CS_ETM_RANGE) {
/*
* Generate a last branch event for the branches left in the
* circular buffer at the end of the trace.
* Use the address of the end of the last reported execution
* range
*/
- u64 addr = cs_etm__last_executed_instr(etmq->prev_packet);
+ u64 addr = cs_etm__last_executed_instr(tidq->prev_packet);
err = cs_etm__synth_instruction_sample(
- etmq, addr,
- etmq->period_instructions);
+ etmq, tidq, addr,
+ tidq->period_instructions);
if (err)
return err;
- etmq->period_instructions = 0;
+ tidq->period_instructions = 0;
}
if (etm->sample_branches &&
- etmq->prev_packet->sample_type == CS_ETM_RANGE) {
- err = cs_etm__synth_branch_sample(etmq);
+ tidq->prev_packet->sample_type == CS_ETM_RANGE) {
+ err = cs_etm__synth_branch_sample(etmq, tidq);
if (err)
return err;
}
* Swap PACKET with PREV_PACKET: PACKET becomes PREV_PACKET for
* the next incoming packet.
*/
- tmp = etmq->packet;
- etmq->packet = etmq->prev_packet;
- etmq->prev_packet = tmp;
+ tmp = tidq->packet;
+ tidq->packet = tidq->prev_packet;
+ tidq->prev_packet = tmp;
}
return err;
}
-static int cs_etm__end_block(struct cs_etm_queue *etmq)
+static int cs_etm__end_block(struct cs_etm_queue *etmq,
+ struct cs_etm_traceid_queue *tidq)
{
int err;
* the trace.
*/
if (etmq->etm->synth_opts.last_branch &&
- etmq->prev_packet->sample_type == CS_ETM_RANGE) {
+ tidq->prev_packet->sample_type == CS_ETM_RANGE) {
/*
* Use the address of the end of the last reported execution
* range.
*/
- u64 addr = cs_etm__last_executed_instr(etmq->prev_packet);
+ u64 addr = cs_etm__last_executed_instr(tidq->prev_packet);
err = cs_etm__synth_instruction_sample(
- etmq, addr,
- etmq->period_instructions);
+ etmq, tidq, addr,
+ tidq->period_instructions);
if (err)
return err;
- etmq->period_instructions = 0;
+ tidq->period_instructions = 0;
}
return 0;
return false;
}
-static bool cs_etm__is_syscall(struct cs_etm_queue *etmq, u64 magic)
+static bool cs_etm__is_syscall(struct cs_etm_queue *etmq,
+ struct cs_etm_traceid_queue *tidq, u64 magic)
{
- struct cs_etm_packet *packet = etmq->packet;
- struct cs_etm_packet *prev_packet = etmq->prev_packet;
+ struct cs_etm_packet *packet = tidq->packet;
+ struct cs_etm_packet *prev_packet = tidq->prev_packet;
if (magic == __perf_cs_etmv3_magic)
if (packet->exception_number == CS_ETMV3_EXC_SVC)
return false;
}
-static bool cs_etm__is_async_exception(struct cs_etm_queue *etmq, u64 magic)
+static bool cs_etm__is_async_exception(struct cs_etm_traceid_queue *tidq,
+ u64 magic)
{
- struct cs_etm_packet *packet = etmq->packet;
+ struct cs_etm_packet *packet = tidq->packet;
if (magic == __perf_cs_etmv3_magic)
if (packet->exception_number == CS_ETMV3_EXC_DEBUG_HALT ||
return false;
}
-static bool cs_etm__is_sync_exception(struct cs_etm_queue *etmq, u64 magic)
+static bool cs_etm__is_sync_exception(struct cs_etm_queue *etmq,
+ struct cs_etm_traceid_queue *tidq,
+ u64 magic)
{
- struct cs_etm_packet *packet = etmq->packet;
- struct cs_etm_packet *prev_packet = etmq->prev_packet;
+ struct cs_etm_packet *packet = tidq->packet;
+ struct cs_etm_packet *prev_packet = tidq->prev_packet;
if (magic == __perf_cs_etmv3_magic)
if (packet->exception_number == CS_ETMV3_EXC_SMC ||
return false;
}
-static int cs_etm__set_sample_flags(struct cs_etm_queue *etmq)
+static int cs_etm__set_sample_flags(struct cs_etm_queue *etmq,
+ struct cs_etm_traceid_queue *tidq)
{
- struct cs_etm_packet *packet = etmq->packet;
- struct cs_etm_packet *prev_packet = etmq->prev_packet;
+ struct cs_etm_packet *packet = tidq->packet;
+ struct cs_etm_packet *prev_packet = tidq->prev_packet;
u64 magic;
int ret;
return ret;
/* The exception is for system call. */
- if (cs_etm__is_syscall(etmq, magic))
+ if (cs_etm__is_syscall(etmq, tidq, magic))
packet->flags = PERF_IP_FLAG_BRANCH |
PERF_IP_FLAG_CALL |
PERF_IP_FLAG_SYSCALLRET;
* The exceptions are triggered by external signals from bus,
* interrupt controller, debug module, PE reset or halt.
*/
- else if (cs_etm__is_async_exception(etmq, magic))
+ else if (cs_etm__is_async_exception(tidq, magic))
packet->flags = PERF_IP_FLAG_BRANCH |
PERF_IP_FLAG_CALL |
PERF_IP_FLAG_ASYNC |
* Otherwise, exception is caused by trap, instruction &
* data fault, or alignment errors.
*/
- else if (cs_etm__is_sync_exception(etmq, magic))
+ else if (cs_etm__is_sync_exception(etmq, tidq, magic))
packet->flags = PERF_IP_FLAG_BRANCH |
PERF_IP_FLAG_CALL |
PERF_IP_FLAG_INTERRUPT;
return ret;
}
-static int cs_etm__process_decoder_queue(struct cs_etm_queue *etmq)
+static int cs_etm__process_traceid_queue(struct cs_etm_queue *etmq,
+ struct cs_etm_traceid_queue *tidq)
{
int ret;
+ struct cs_etm_packet_queue *packet_queue;
- /* Process each packet in this chunk */
- while (1) {
- ret = cs_etm_decoder__get_packet(etmq->decoder,
- etmq->packet);
- if (ret <= 0)
- /*
- * Stop processing this chunk on
- * end of data or error
- */
- break;
+ packet_queue = &tidq->packet_queue;
+ /* Process each packet in this chunk */
+ while (1) {
+ ret = cs_etm_decoder__get_packet(packet_queue,
+ tidq->packet);
+ if (ret <= 0)
/*
- * Since packet addresses are swapped in packet
- * handling within below switch() statements,
- * thus setting sample flags must be called
- * prior to switch() statement to use address
- * information before packets swapping.
+ * Stop processing this chunk on
+ * end of data or error
*/
- ret = cs_etm__set_sample_flags(etmq);
- if (ret < 0)
- break;
-
- switch (etmq->packet->sample_type) {
- case CS_ETM_RANGE:
- /*
- * If the packet contains an instruction
- * range, generate instruction sequence
- * events.
- */
- cs_etm__sample(etmq);
- break;
- case CS_ETM_EXCEPTION:
- case CS_ETM_EXCEPTION_RET:
- /*
- * If the exception packet is coming,
- * make sure the previous instruction
- * range packet to be handled properly.
- */
- cs_etm__exception(etmq);
- break;
- case CS_ETM_DISCONTINUITY:
- /*
- * Discontinuity in trace, flush
- * previous branch stack
- */
- cs_etm__flush(etmq);
- break;
- case CS_ETM_EMPTY:
- /*
- * Should not receive empty packet,
- * report error.
- */
- pr_err("CS ETM Trace: empty packet\n");
- return -EINVAL;
- default:
- break;
- }
+ break;
+
+ /*
+ * Since packet addresses are swapped in packet
+ * handling within below switch() statements,
+ * thus setting sample flags must be called
+ * prior to switch() statement to use address
+ * information before packets swapping.
+ */
+ ret = cs_etm__set_sample_flags(etmq, tidq);
+ if (ret < 0)
+ break;
+
+ switch (tidq->packet->sample_type) {
+ case CS_ETM_RANGE:
+ /*
+ * If the packet contains an instruction
+ * range, generate instruction sequence
+ * events.
+ */
+ cs_etm__sample(etmq, tidq);
+ break;
+ case CS_ETM_EXCEPTION:
+ case CS_ETM_EXCEPTION_RET:
+ /*
+ * If the exception packet is coming,
+ * make sure the previous instruction
+ * range packet to be handled properly.
+ */
+ cs_etm__exception(tidq);
+ break;
+ case CS_ETM_DISCONTINUITY:
+ /*
+ * Discontinuity in trace, flush
+ * previous branch stack
+ */
+ cs_etm__flush(etmq, tidq);
+ break;
+ case CS_ETM_EMPTY:
+ /*
+ * Should not receive empty packet,
+ * report error.
+ */
+ pr_err("CS ETM Trace: empty packet\n");
+ return -EINVAL;
+ default:
+ break;
}
+ }
return ret;
}
static int cs_etm__run_decoder(struct cs_etm_queue *etmq)
{
int err = 0;
+ struct cs_etm_traceid_queue *tidq;
+
+ tidq = cs_etm__etmq_get_traceid_queue(etmq, CS_ETM_PER_THREAD_TRACEID);
+ if (!tidq)
+ return -EINVAL;
/* Go through each buffer in the queue and decode them one by one */
while (1) {
* an error occurs other than hoping the next one will
* be better.
*/
- err = cs_etm__process_decoder_queue(etmq);
+ err = cs_etm__process_traceid_queue(etmq, tidq);
} while (etmq->buf_len);
if (err == 0)
/* Flush any remaining branch stack entries */
- err = cs_etm__end_block(etmq);
+ err = cs_etm__end_block(etmq, tidq);
}
return err;
return 0;
}
+static int cs_etm__process_itrace_start(struct cs_etm_auxtrace *etm,
+ union perf_event *event)
+{
+ struct thread *th;
+
+ if (etm->timeless_decoding)
+ return 0;
+
+ /*
+ * Add the tid/pid to the log so that we can get a match when
+ * we get a contextID from the decoder.
+ */
+ th = machine__findnew_thread(etm->machine,
+ event->itrace_start.pid,
+ event->itrace_start.tid);
+ if (!th)
+ return -ENOMEM;
+
+ thread__put(th);
+
+ return 0;
+}
+
+static int cs_etm__process_switch_cpu_wide(struct cs_etm_auxtrace *etm,
+ union perf_event *event)
+{
+ struct thread *th;
+ bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
+
+ /*
+ * Context switch in per-thread mode are irrelevant since perf
+ * will start/stop tracing as the process is scheduled.
+ */
+ if (etm->timeless_decoding)
+ return 0;
+
+ /*
+ * SWITCH_IN events carry the next process to be switched out while
+ * SWITCH_OUT events carry the process to be switched in. As such
+ * we don't care about IN events.
+ */
+ if (!out)
+ return 0;
+
+ /*
+ * Add the tid/pid to the log so that we can get a match when
+ * we get a contextID from the decoder.
+ */
+ th = machine__findnew_thread(etm->machine,
+ event->context_switch.next_prev_pid,
+ event->context_switch.next_prev_tid);
+ if (!th)
+ return -ENOMEM;
+
+ thread__put(th);
+
+ return 0;
+}
+
static int cs_etm__process_event(struct perf_session *session,
union perf_event *event,
struct perf_sample *sample,
return cs_etm__process_timeless_queues(etm,
event->fork.tid);
+ if (event->header.type == PERF_RECORD_ITRACE_START)
+ return cs_etm__process_itrace_start(etm, event);
+ else if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE)
+ return cs_etm__process_switch_cpu_wide(etm, event);
+
return 0;
}
projects / linux.git / blobdiff