#include <linux/kernel.h>
#include <linux/mmiotrace.h>
#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+
+#include <asm/atomic.h>
#include "trace.h"
+#include "trace_output.h"
struct header_iter {
struct pci_dev *dev;
static struct trace_array *mmio_trace_array;
static bool overrun_detected;
+static unsigned long prev_overruns;
+static atomic_t dropped_count;
static void mmio_reset_data(struct trace_array *tr)
{
- int cpu;
-
overrun_detected = false;
- tr->time_start = ftrace_now(tr->cpu);
+ prev_overruns = 0;
- for_each_online_cpu(cpu)
- tracing_reset(tr, cpu);
+ tracing_reset_online_cpus(tr);
}
-static void mmio_trace_init(struct trace_array *tr)
+static int mmio_trace_init(struct trace_array *tr)
{
pr_debug("in %s\n", __func__);
mmio_trace_array = tr;
- if (tr->ctrl) {
- mmio_reset_data(tr);
- enable_mmiotrace();
- }
+
+ mmio_reset_data(tr);
+ enable_mmiotrace();
+ return 0;
}
static void mmio_trace_reset(struct trace_array *tr)
{
pr_debug("in %s\n", __func__);
- if (tr->ctrl)
- disable_mmiotrace();
+
+ disable_mmiotrace();
mmio_reset_data(tr);
mmio_trace_array = NULL;
}
-static void mmio_trace_ctrl_update(struct trace_array *tr)
+static void mmio_trace_start(struct trace_array *tr)
{
pr_debug("in %s\n", __func__);
- if (tr->ctrl) {
- mmio_reset_data(tr);
- enable_mmiotrace();
- } else {
- disable_mmiotrace();
- }
+ mmio_reset_data(tr);
}
static int mmio_print_pcidev(struct trace_seq *s, const struct pci_dev *dev)
static unsigned long count_overruns(struct trace_iterator *iter)
{
- int cpu;
- unsigned long cnt = 0;
-/* FIXME: */
-#if 0
- for_each_online_cpu(cpu) {
- cnt += iter->overrun[cpu];
- iter->overrun[cpu] = 0;
- }
-#endif
- (void)cpu;
+ unsigned long cnt = atomic_xchg(&dropped_count, 0);
+ unsigned long over = ring_buffer_overruns(iter->tr->buffer);
+
+ if (over > prev_overruns)
+ cnt += over - prev_overruns;
+ prev_overruns = over;
return cnt;
}
static enum print_line_t mmio_print_rw(struct trace_iterator *iter)
{
struct trace_entry *entry = iter->ent;
- struct trace_mmiotrace_rw *field =
- (struct trace_mmiotrace_rw *)entry;
- struct mmiotrace_rw *rw = &field->rw;
+ struct trace_mmiotrace_rw *field;
+ struct mmiotrace_rw *rw;
struct trace_seq *s = &iter->seq;
unsigned long long t = ns2usecs(iter->ts);
- unsigned long usec_rem = do_div(t, 1000000ULL);
+ unsigned long usec_rem = do_div(t, USEC_PER_SEC);
unsigned secs = (unsigned long)t;
int ret = 1;
+ trace_assign_type(field, entry);
+ rw = &field->rw;
+
switch (rw->opcode) {
case MMIO_READ:
ret = trace_seq_printf(s,
- "R %d %lu.%06lu %d 0x%llx 0x%lx 0x%lx %d\n",
+ "R %d %u.%06lu %d 0x%llx 0x%lx 0x%lx %d\n",
rw->width, secs, usec_rem, rw->map_id,
(unsigned long long)rw->phys,
rw->value, rw->pc, 0);
break;
case MMIO_WRITE:
ret = trace_seq_printf(s,
- "W %d %lu.%06lu %d 0x%llx 0x%lx 0x%lx %d\n",
+ "W %d %u.%06lu %d 0x%llx 0x%lx 0x%lx %d\n",
rw->width, secs, usec_rem, rw->map_id,
(unsigned long long)rw->phys,
rw->value, rw->pc, 0);
break;
case MMIO_UNKNOWN_OP:
ret = trace_seq_printf(s,
- "UNKNOWN %lu.%06lu %d 0x%llx %02x,%02x,%02x 0x%lx %d\n",
+ "UNKNOWN %u.%06lu %d 0x%llx %02lx,%02lx,"
+ "%02lx 0x%lx %d\n",
secs, usec_rem, rw->map_id,
(unsigned long long)rw->phys,
(rw->value >> 16) & 0xff, (rw->value >> 8) & 0xff,
static enum print_line_t mmio_print_map(struct trace_iterator *iter)
{
struct trace_entry *entry = iter->ent;
- struct mmiotrace_map *m = (struct mmiotrace_map *)entry;
+ struct trace_mmiotrace_map *field;
+ struct mmiotrace_map *m;
struct trace_seq *s = &iter->seq;
unsigned long long t = ns2usecs(iter->ts);
- unsigned long usec_rem = do_div(t, 1000000ULL);
+ unsigned long usec_rem = do_div(t, USEC_PER_SEC);
unsigned secs = (unsigned long)t;
int ret;
+ trace_assign_type(field, entry);
+ m = &field->map;
+
switch (m->opcode) {
case MMIO_PROBE:
ret = trace_seq_printf(s,
- "MAP %lu.%06lu %d 0x%llx 0x%lx 0x%lx 0x%lx %d\n",
+ "MAP %u.%06lu %d 0x%llx 0x%lx 0x%lx 0x%lx %d\n",
secs, usec_rem, m->map_id,
(unsigned long long)m->phys, m->virt, m->len,
0UL, 0);
break;
case MMIO_UNPROBE:
ret = trace_seq_printf(s,
- "UNMAP %lu.%06lu %d 0x%lx %d\n",
+ "UNMAP %u.%06lu %d 0x%lx %d\n",
secs, usec_rem, m->map_id, 0UL, 0);
break;
default:
const char *msg = print->buf;
struct trace_seq *s = &iter->seq;
unsigned long long t = ns2usecs(iter->ts);
- unsigned long usec_rem = do_div(t, 1000000ULL);
+ unsigned long usec_rem = do_div(t, USEC_PER_SEC);
unsigned secs = (unsigned long)t;
int ret;
/* The trailing newline must be in the message. */
- ret = trace_seq_printf(s, "MARK %lu.%06lu %s", secs, usec_rem, msg);
+ ret = trace_seq_printf(s, "MARK %u.%06lu %s", secs, usec_rem, msg);
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
- if (entry->flags & TRACE_FLAG_CONT)
- trace_seq_print_cont(s, iter);
-
return TRACE_TYPE_HANDLED;
}
.name = "mmiotrace",
.init = mmio_trace_init,
.reset = mmio_trace_reset,
+ .start = mmio_trace_start,
.pipe_open = mmio_pipe_open,
.close = mmio_close,
.read = mmio_read,
- .ctrl_update = mmio_trace_ctrl_update,
.print_line = mmio_print_line,
};
struct trace_array_cpu *data,
struct mmiotrace_rw *rw)
{
+ struct ftrace_event_call *call = &event_mmiotrace_rw;
+ struct ring_buffer *buffer = tr->buffer;
struct ring_buffer_event *event;
struct trace_mmiotrace_rw *entry;
- unsigned long irq_flags;
+ int pc = preempt_count();
- event = ring_buffer_lock_reserve(tr->buffer, sizeof(*entry),
- &irq_flags);
- if (!event)
+ event = trace_buffer_lock_reserve(buffer, TRACE_MMIO_RW,
+ sizeof(*entry), 0, pc);
+ if (!event) {
+ atomic_inc(&dropped_count);
return;
+ }
entry = ring_buffer_event_data(event);
- tracing_generic_entry_update(&entry->ent, 0);
- entry->ent.type = TRACE_MMIO_RW;
entry->rw = *rw;
- ring_buffer_unlock_commit(tr->buffer, event, irq_flags);
- trace_wake_up();
+ if (!filter_check_discard(call, entry, buffer, event))
+ trace_buffer_unlock_commit(buffer, event, 0, pc);
}
void mmio_trace_rw(struct mmiotrace_rw *rw)
struct trace_array_cpu *data,
struct mmiotrace_map *map)
{
+ struct ftrace_event_call *call = &event_mmiotrace_map;
+ struct ring_buffer *buffer = tr->buffer;
struct ring_buffer_event *event;
struct trace_mmiotrace_map *entry;
- unsigned long irq_flags;
+ int pc = preempt_count();
- event = ring_buffer_lock_reserve(tr->buffer, sizeof(*entry),
- &irq_flags);
- if (!event)
+ event = trace_buffer_lock_reserve(buffer, TRACE_MMIO_MAP,
+ sizeof(*entry), 0, pc);
+ if (!event) {
+ atomic_inc(&dropped_count);
return;
+ }
entry = ring_buffer_event_data(event);
- tracing_generic_entry_update(&entry->ent, 0);
- entry->ent.type = TRACE_MMIO_MAP;
entry->map = *map;
- ring_buffer_unlock_commit(tr->buffer, event, irq_flags);
- trace_wake_up();
+ if (!filter_check_discard(call, entry, buffer, event))
+ trace_buffer_unlock_commit(buffer, event, 0, pc);
}
void mmio_trace_mapping(struct mmiotrace_map *map)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff