[04/13] Add debugging infrastructure

From: Orit Wasserman <owasserm@redhat.com>

Signed-off-by: Orit Wasserman <owasserm@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 arch_init.c |   33 +++++++++++++++++++++++++++------
 1 file changed, 27 insertions(+), 6 deletions(-)

On Fri, Jun 29, 2012 at 4:43 PM, Juan Quintela <quintela@redhat.com> wrote:
> From: Orit Wasserman <owasserm@redhat.com>
>
> Signed-off-by: Orit Wasserman <owasserm@redhat.com>
> Signed-off-by: Juan Quintela <quintela@redhat.com>
> ---
>  arch_init.c |   33 +++++++++++++++++++++++++++------
>  1 file changed, 27 insertions(+), 6 deletions(-)
>
> diff --git a/arch_init.c b/arch_init.c
> index cfa1af2..78b3c0c 100644
> --- a/arch_init.c
> +++ b/arch_init.c
> @@ -44,6 +44,14 @@
>  #include "exec-memory.h"
>  #include "hw/pcspk.h"
>
> +#ifdef DEBUG_ARCH_INIT
> +#define DPRINTF(fmt, ...) \
> +    do { fprintf(stdout, "arch_init: " fmt, ## __VA_ARGS__); } while (0)
> +#else
> +#define DPRINTF(fmt, ...) \
> +    do { } while (0)
> +#endif

Please use tracepoints instead as with other patches.

> +
>  #ifdef TARGET_SPARC
>  int graphic_width = 1024;
>  int graphic_height = 768;
> @@ -380,6 +388,9 @@ int ram_save_live(QEMUFile *f, int stage, void *opaque)
>
>     expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
>
> +    DPRINTF("ram_save_live: expected(" PRIu64 ") <= max(" PRIu64 ")?\n",
> +            expected_time, migrate_max_downtime());
> +
>     return (stage == 2) && (expected_time <= migrate_max_downtime());
>  }
>
> @@ -416,8 +427,11 @@ static inline void *host_from_stream_offset(QEMUFile *f,
>  int ram_load(QEMUFile *f, void *opaque, int version_id)
>  {
>     ram_addr_t addr;
> -    int flags;
> +    int flags, ret = 0;
>     int error;
> +    static uint64_t seq_iter;
> +
> +    seq_iter++;
>
>     if (version_id < 4 || version_id > 4) {
>         return -EINVAL;
> @@ -447,8 +461,10 @@ int ram_load(QEMUFile *f, void *opaque, int version_id)
>
>                     QLIST_FOREACH(block, &ram_list.blocks, next) {
>                         if (!strncmp(id, block->idstr, sizeof(id))) {
> -                            if (block->length != length)
> -                                return -EINVAL;
> +                            if (block->length != length) {
> +                                ret =  -EINVAL;
> +                                goto done;
> +                            }
>                             break;
>                         }
>                     }
> @@ -456,7 +472,8 @@ int ram_load(QEMUFile *f, void *opaque, int version_id)
>                     if (!block) {
>                         fprintf(stderr, "Unknown ramblock \"%s\", cannot "
>                                 "accept migration\n", id);
> -                        return -EINVAL;
> +                        ret = -EINVAL;
> +                        goto done;
>                     }
>
>                     total_ram_bytes -= length;
> @@ -493,11 +510,15 @@ int ram_load(QEMUFile *f, void *opaque, int version_id)
>         }
>         error = qemu_file_get_error(f);
>         if (error) {
> -            return error;
> +            ret = error;
> +            goto done;
>         }
>     } while (!(flags & RAM_SAVE_FLAG_EOS));
>
> -    return 0;
> +done:
> +    DPRINTF("Completed load of VM with exit code %d seq iteration " PRIu64 "\n",
> +            ret, seq_iter);
> +    return ret;
>  }
>
>  #ifdef HAS_AUDIO
> --
> 1.7.10.4
>
>