Re: [Qemu-devel] [PATCH 4/6] hw/nvram/fw_cfg: Add trace events

["Michael S. Tsirkin" <mst@redhat.com>]

On Fri, Dec 07, 2018 at 06:03:58PM +0100, Philippe Mathieu-Daudé wrote:
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Well why not.

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>

> ---
>  hw/nvram/fw_cfg.c     | 5 +++++
>  hw/nvram/trace-events | 5 +++++
>  2 files changed, 10 insertions(+)
> 
> diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
> index 3cb726ff68..582653f07e 100644
> --- a/hw/nvram/fw_cfg.c
> +++ b/hw/nvram/fw_cfg.c
> @@ -627,6 +627,7 @@ static void *fw_cfg_modify_bytes_read(FWCfgState *s, uint16_t key,
>  
>  void fw_cfg_add_bytes(FWCfgState *s, uint16_t key, void *data, size_t len)
>  {
> +    trace_fw_cfg_add_bytes(key, len);
>      fw_cfg_add_bytes_callback(s, key, NULL, NULL, NULL, data, len, true);
>  }
>  
> @@ -634,6 +635,7 @@ void fw_cfg_add_string(FWCfgState *s, uint16_t key, const char *value)
>  {
>      size_t sz = strlen(value) + 1;
>  
> +    trace_fw_cfg_add_string(key, value);
>      fw_cfg_add_bytes(s, key, g_memdup(value, sz), sz);
>  }
>  
> @@ -643,6 +645,7 @@ void fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value)
>  
>      copy = g_malloc(sizeof(value));
>      *copy = cpu_to_le16(value);
> +    trace_fw_cfg_add_i16(key, value);
>      fw_cfg_add_bytes(s, key, copy, sizeof(value));
>  }
>  
> @@ -662,6 +665,7 @@ void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value)
>  
>      copy = g_malloc(sizeof(value));
>      *copy = cpu_to_le32(value);
> +    trace_fw_cfg_add_i32(key, value);
>      fw_cfg_add_bytes(s, key, copy, sizeof(value));
>  }
>  
> @@ -671,6 +675,7 @@ void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value)
>  
>      copy = g_malloc(sizeof(value));
>      *copy = cpu_to_le64(value);
> +    trace_fw_cfg_add_i64(key, value);
>      fw_cfg_add_bytes(s, key, copy, sizeof(value));
>  }
>  
> diff --git a/hw/nvram/trace-events b/hw/nvram/trace-events
> index 6b55ba7a09..0ee0f8d04a 100644
> --- a/hw/nvram/trace-events
> +++ b/hw/nvram/trace-events
> @@ -7,4 +7,9 @@ nvram_write(uint32_t addr, uint32_t old, uint32_t val) "write addr %d: 0x%02x ->
>  # hw/nvram/fw_cfg.c
>  fw_cfg_select(void *s, uint16_t key, int ret) "%p key %d = %d"
>  fw_cfg_read(void *s, uint64_t ret) "%p = 0x%"PRIx64
> +fw_cfg_add_bytes(uint16_t key, size_t len) "key 0x%04" PRIx16 " (%zu bytes)"
>  fw_cfg_add_file(void *s, int index, char *name, size_t len) "%p #%d: %s (%zd bytes)"
> +fw_cfg_add_string(uint16_t key, const char *value) "key 0x%04" PRIx16 ", value '%s'"
> +fw_cfg_add_i16(uint16_t key, uint32_t value) "key 0x%04" PRIx16 ", value 0x%" PRIx32
> +fw_cfg_add_i32(uint16_t key, uint32_t value) "key 0x%04" PRIx16 ", value 0x%" PRIx32
> +fw_cfg_add_i64(uint16_t key, uint64_t value) "key 0x%04" PRIx16 ", value 0x%" PRIx64
> -- 
> 2.17.2