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Diffstat (limited to 'kernel/trace/trace_mmiotrace.c')
-rw-r--r--kernel/trace/trace_mmiotrace.c52
1 files changed, 21 insertions, 31 deletions
diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index 0abd9b863474..7a9ba62e9fef 100644
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -59,17 +59,15 @@ static void mmio_trace_start(struct trace_array *tr)
mmio_reset_data(tr);
}
-static int mmio_print_pcidev(struct trace_seq *s, const struct pci_dev *dev)
+static void mmio_print_pcidev(struct trace_seq *s, const struct pci_dev *dev)
{
- int ret = 0;
int i;
resource_size_t start, end;
const struct pci_driver *drv = pci_dev_driver(dev);
- /* XXX: incomplete checks for trace_seq_printf() return value */
- ret += trace_seq_printf(s, "PCIDEV %02x%02x %04x%04x %x",
- dev->bus->number, dev->devfn,
- dev->vendor, dev->device, dev->irq);
+ trace_seq_printf(s, "PCIDEV %02x%02x %04x%04x %x",
+ dev->bus->number, dev->devfn,
+ dev->vendor, dev->device, dev->irq);
/*
* XXX: is pci_resource_to_user() appropriate, since we are
* supposed to interpret the __ioremap() phys_addr argument based on
@@ -77,21 +75,20 @@ static int mmio_print_pcidev(struct trace_seq *s, const struct pci_dev *dev)
*/
for (i = 0; i < 7; i++) {
pci_resource_to_user(dev, i, &dev->resource[i], &start, &end);
- ret += trace_seq_printf(s, " %llx",
+ trace_seq_printf(s, " %llx",
(unsigned long long)(start |
(dev->resource[i].flags & PCI_REGION_FLAG_MASK)));
}
for (i = 0; i < 7; i++) {
pci_resource_to_user(dev, i, &dev->resource[i], &start, &end);
- ret += trace_seq_printf(s, " %llx",
+ trace_seq_printf(s, " %llx",
dev->resource[i].start < dev->resource[i].end ?
(unsigned long long)(end - start) + 1 : 0);
}
if (drv)
- ret += trace_seq_printf(s, " %s\n", drv->name);
+ trace_seq_printf(s, " %s\n", drv->name);
else
- ret += trace_seq_puts(s, " \n");
- return ret;
+ trace_seq_puts(s, " \n");
}
static void destroy_header_iter(struct header_iter *hiter)
@@ -179,28 +176,27 @@ static enum print_line_t mmio_print_rw(struct trace_iterator *iter)
unsigned long long t = ns2usecs(iter->ts);
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,
+ trace_seq_printf(s,
"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,
+ trace_seq_printf(s,
"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,
+ trace_seq_printf(s,
"UNKNOWN %u.%06lu %d 0x%llx %02lx,%02lx,"
"%02lx 0x%lx %d\n",
secs, usec_rem, rw->map_id,
@@ -209,12 +205,11 @@ static enum print_line_t mmio_print_rw(struct trace_iterator *iter)
(rw->value >> 0) & 0xff, rw->pc, 0);
break;
default:
- ret = trace_seq_puts(s, "rw what?\n");
+ trace_seq_puts(s, "rw what?\n");
break;
}
- if (ret)
- return TRACE_TYPE_HANDLED;
- return TRACE_TYPE_PARTIAL_LINE;
+
+ return trace_handle_return(s);
}
static enum print_line_t mmio_print_map(struct trace_iterator *iter)
@@ -226,31 +221,29 @@ static enum print_line_t mmio_print_map(struct trace_iterator *iter)
unsigned long long t = ns2usecs(iter->ts);
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,
+ trace_seq_printf(s,
"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,
+ trace_seq_printf(s,
"UNMAP %u.%06lu %d 0x%lx %d\n",
secs, usec_rem, m->map_id, 0UL, 0);
break;
default:
- ret = trace_seq_puts(s, "map what?\n");
+ trace_seq_puts(s, "map what?\n");
break;
}
- if (ret)
- return TRACE_TYPE_HANDLED;
- return TRACE_TYPE_PARTIAL_LINE;
+
+ return trace_handle_return(s);
}
static enum print_line_t mmio_print_mark(struct trace_iterator *iter)
@@ -262,14 +255,11 @@ static enum print_line_t mmio_print_mark(struct trace_iterator *iter)
unsigned long long t = ns2usecs(iter->ts);
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 %u.%06lu %s", secs, usec_rem, msg);
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
+ trace_seq_printf(s, "MARK %u.%06lu %s", secs, usec_rem, msg);
- return TRACE_TYPE_HANDLED;
+ return trace_handle_return(s);
}
static enum print_line_t mmio_print_line(struct trace_iterator *iter)