Re: [PATCH] util/log: flush TB cache when log level changes

[Philippe Mathieu-Daudé]

Hi Pavel,

On 1/22/21 11:03 AM, Pavel Dovgalyuk wrote:
> Sometimes we need to collect the translation logs starting
> from some point of the execution. Some TB listings may
> be missed in this case, when blocks were translated before.
> This patch clears TB cache to allow re-translation of such
> code blocks.
> 
> Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
> ---
>  accel/tcg/translate-all.c |    8 ++++++++
>  include/sysemu/tcg.h      |    1 +
>  stubs/meson.build         |    1 +
>  stubs/tcg.c               |   12 ++++++++++++
>  util/log.c                |    3 +++
>  5 files changed, 25 insertions(+)
>  create mode 100644 stubs/tcg.c
...

>  /*
>   * Formerly ifdef DEBUG_TB_CHECK. These debug functions are user-mode-only,
>   * so in order to prevent bit rot we compile them unconditionally in 
> user-mode,
> diff --git a/include/sysemu/tcg.h b/include/sysemu/tcg.h
> index 00349fb18a..7415f11022 100644
> --- a/include/sysemu/tcg.h
> +++ b/include/sysemu/tcg.h
> @@ -9,6 +9,7 @@
>  #define SYSEMU_TCG_H
>  
>  void tcg_exec_init(unsigned long tb_size, int splitwx);
> +void tb_flush_all(void);

Why not declare in "exec/exec-all.h"?