diff options
Diffstat (limited to 'kernel/trace/trace_mmiotrace.c')
| -rw-r--r-- | kernel/trace/trace_mmiotrace.c | 52 |
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) |