[DTrace-devel] [PATCH 14/22] Both dted_uarg and dofe_uarg are unused

[Kris Van Hees]

On Thu, Aug 29, 2024 at 01:22:11AM -0400, eugene.loh at oracle.com wrote:
> From: Eugene Loh <eugene.loh at oracle.com>
> 
> I confirmed in a run of the test suite that they are unused.
> 
> But I do not understand how any of the dof_ecbdesc_t fields are
> used: dofe_probes, dofe_actions, or dofe_pad.
> 
> Signed-off-by: Eugene Loh <eugene.loh at oracle.com>

Reviewed-by: Kris Van Hees <kris.van.hees at oracle.com>

> ---
>  include/dtrace/dof.h      | 1 -
>  include/dtrace/enabling.h | 1 -
>  libdtrace/dt_dof.c        | 1 -
>  3 files changed, 3 deletions(-)
> 
> diff --git a/include/dtrace/dof.h b/include/dtrace/dof.h
> index f5655fe2..f9b66e10 100644
> --- a/include/dtrace/dof.h
> +++ b/include/dtrace/dof.h
> @@ -94,7 +94,6 @@ typedef struct dof_ecbdesc {
>  	dof_secidx_t dofe_probes;	/* link to DOF_SECT_PROBEDESC */
>  	dof_secidx_t dofe_actions;	/* link to DOF_SECT_ACTDESC */
>  	uint32_t dofe_pad;		/* reserved for future use */
> -	uint64_t dofe_uarg;		/* user-supplied library argument */
>  } dof_ecbdesc_t;
>  
>  typedef struct dof_probedesc {
> diff --git a/include/dtrace/enabling.h b/include/dtrace/enabling.h
> index f1ec444c..55f67c03 100644
> --- a/include/dtrace/enabling.h
> +++ b/include/dtrace/enabling.h
> @@ -53,7 +53,6 @@ typedef struct dtrace_actdesc {
>  
>  typedef struct dtrace_ecbdesc {
>  	dtrace_probedesc_t dted_probe;		/* probe description */
> -	uint64_t dted_uarg;			/* library argument */
>  	int dted_refcnt;			/* reference count */
>  } dtrace_ecbdesc_t;
>  
> diff --git a/libdtrace/dt_dof.c b/libdtrace/dt_dof.c
> index be29f045..c89ad830 100644
> --- a/libdtrace/dt_dof.c
> +++ b/libdtrace/dt_dof.c
> @@ -738,7 +738,6 @@ dtrace_dof_create(dtrace_hdl_t *dtp, dtrace_prog_t *pgp, uint_t flags)
>  		dofe.dofe_probes = probesec;
>  		dofe.dofe_actions = actsec;
>  		dofe.dofe_pad = 0;
> -		dofe.dofe_uarg = edp->dted_uarg;
>  
>  		dof_add_lsect(ddo, &dofe, DOF_SECT_ECBDESC,
>  		    sizeof(uint64_t), 0, 0, sizeof(dof_ecbdesc_t));
> -- 
> 2.43.5
>