Re: [PATCH security-next v3 04/29] LSM: Remove initcall tracing

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On 09/24/2018 05:18 PM, Kees Cook wrote:
> This partially reverts commit 58eacfffc417 ("init, tracing: instrument
> security and console initcall trace events") since security init calls
> are about to no longer resemble regular init calls.
> 
> Cc: James Morris <jmorris@xxxxxxxxx>
> Cc: "Serge E. Hallyn" <serge@xxxxxxxxxx>
> Cc: Abderrahmane Benbachir <abderrahmane.benbachir@xxxxxxxxxx>
> Cc: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
> Cc: linux-security-module@xxxxxxxxxxxxxxx
> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>


Reviewed-by: John Johansen <john.johansen@xxxxxxxxxxxxx>

though I do think it would be a good idea to add a new set
of trace points, but that can come as a separate patch

> ---
>  security/security.c | 8 +-------
>  1 file changed, 1 insertion(+), 7 deletions(-)
> 
> diff --git a/security/security.c b/security/security.c
> index 892fe6b691cf..41a5da2c7faf 100644
> --- a/security/security.c
> +++ b/security/security.c
> @@ -30,8 +30,6 @@
>  #include <linux/string.h>
>  #include <net/flow.h>
>  
> -#include <trace/events/initcall.h>
> -
>  #define MAX_LSM_EVM_XATTR	2
>  
>  /* Maximum number of letters for an LSM name string */
> @@ -47,17 +45,13 @@ static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
>  
>  static void __init do_security_initcalls(void)
>  {
> -	int ret;
>  	initcall_t call;
>  	initcall_entry_t *ce;
>  
>  	ce = __start_lsm_info;
> -	trace_initcall_level("security");
>  	while (ce < __end_lsm_info) {
>  		call = initcall_from_entry(ce);
> -		trace_initcall_start(call);
> -		ret = call();
> -		trace_initcall_finish(call, ret);
> +		call();
>  		ce++;
>  	}
>  }
> 




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