Re: [Qemu-devel] [PATCH 1/5] tpm: convert tpm_crb.c to use trace-events

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

On 03/04/2018 06:56 PM, Stefan Berger wrote:
> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

> ---
>  Makefile.objs       |  1 +
>  hw/tpm/tpm_crb.c    | 17 +++++------------
>  hw/tpm/trace-events |  5 +++++
>  3 files changed, 11 insertions(+), 12 deletions(-)
>  create mode 100644 hw/tpm/trace-events
> 
> diff --git a/Makefile.objs b/Makefile.objs
> index 5dc1348..72c3d8c 100644
> --- a/Makefile.objs
> +++ b/Makefile.objs
> @@ -162,6 +162,7 @@ trace-events-subdirs += hw/alpha
>  trace-events-subdirs += hw/hppa
>  trace-events-subdirs += hw/xen
>  trace-events-subdirs += hw/ide
> +trace-events-subdirs += hw/tpm
>  trace-events-subdirs += ui
>  trace-events-subdirs += audio
>  trace-events-subdirs += net
> diff --git a/hw/tpm/tpm_crb.c b/hw/tpm/tpm_crb.c
> index b5b8256..d8917cb 100644
> --- a/hw/tpm/tpm_crb.c
> +++ b/hw/tpm/tpm_crb.c
> @@ -29,6 +29,7 @@
>  #include "sysemu/reset.h"
>  #include "tpm_int.h"
>  #include "tpm_util.h"
> +#include "trace.h"
>  
>  typedef struct CRBState {
>      DeviceState parent_obj;
> @@ -44,14 +45,6 @@ typedef struct CRBState {
>  
>  #define CRB(obj) OBJECT_CHECK(CRBState, (obj), TYPE_TPM_CRB)
>  
> -#define DEBUG_CRB 0
> -
> -#define DPRINTF(fmt, ...) do {                  \
> -        if (DEBUG_CRB) {                        \
> -            printf(fmt, ## __VA_ARGS__);        \
> -        }                                       \
> -    } while (0)
> -
>  #define CRB_INTF_TYPE_CRB_ACTIVE 0b1
>  #define CRB_INTF_VERSION_CRB 0b1
>  #define CRB_INTF_CAP_LOCALITY_0_ONLY 0b0
> @@ -91,8 +84,8 @@ static uint64_t tpm_crb_mmio_read(void *opaque, hwaddr addr,
>      unsigned offset = addr & 3;
>      uint32_t val = *(uint32_t *)regs >> (8 * offset);
>  
> -    DPRINTF("CRB read 0x" TARGET_FMT_plx " len:%u val: 0x%" PRIx32 "\n",
> -            addr, size, val);
> +    trace_tpm_crb_mmio_read(addr, size, val);
> +
>      return val;
>  }
>  
> @@ -100,8 +93,8 @@ static void tpm_crb_mmio_write(void *opaque, hwaddr addr,
>                                 uint64_t val, unsigned size)
>  {
>      CRBState *s = CRB(opaque);
> -    DPRINTF("CRB write 0x" TARGET_FMT_plx " len:%u val: 0x%" PRIx64 "\n",
> -            addr, size, val);
> +
> +    trace_tpm_crb_mmio_write(addr, size, val);
>  
>      switch (addr) {
>      case A_CRB_CTRL_REQ:
> diff --git a/hw/tpm/trace-events b/hw/tpm/trace-events
> new file mode 100644
> index 0000000..336b06d
> --- /dev/null
> +++ b/hw/tpm/trace-events
> @@ -0,0 +1,5 @@
> +# See docs/devel/tracing.txt for syntax documentation.
> +
> +# hw/tpm/tpm_crb.c
> +tpm_crb_mmio_read(uint64_t addr, unsigned size, uint32_t val) "CRB read 0x" TARGET_FMT_plx " len:%u val: 0x%" PRIx32
> +tpm_crb_mmio_write(uint64_t addr, unsigned size, uint32_t val) "CRB write 0x" TARGET_FMT_plx " len:%u val: 0x%" PRIx32
>