[Bug testsuite/4254] testsuite/buildok/twenty.stp needs change for 2.6.21-rc1 and above kernel.

["pierre dot peiffer at bull dot net" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From pierre dot peiffer at bull dot net  2007-03-22 12:34 -------
Subject: Re:  New: testsuite/buildok/twenty.stp needs
 change for 2.6.21-rc1 and above  kernel.

I've sent a correction for that few weeks ago and Frank Ch. Eigler has 
integrated it few days ago.
=> now available in CVS

P.

srinivasa at in dot ibm dot com a écrit :
> Since there has been change in the kernel, testsuite/buildok/twent.stp doesn't
> work and hence fails.
> We need to change this testcase to make it work.
> 
> Earlier testcase looks like this.
> ===================================================
> #! stap -gp4
> 
> # Test for writing to target variables, PR 1131
> 
> probe kernel.function("vfs_readdir")
> {
>         $file->f_dentry->d_name->len = 1
> }
> =============================================
> Which has to be changed to this 
> ========================================
> #! stap -gp4
> 
> # Test for writing to target variables, PR 1131
> 
> probe kernel.function("vfs_readdir")
> {
>         $file->f_path->dentry->d_name->len = 1;
> }
> =================================================
> 
> Due to this change in include/linux/file.h
> ===================================
> struct file {
>         /*
>          * fu_list becomes invalid after file_free is called and queued via
>          * fu_rcuhead for RCU freeing
>          */
>         union {
>                 struct list_head        fu_list;
>                 struct rcu_head         fu_rcuhead;
>         } f_u;
>         struct path             f_path; ====> change
> #define f_dentry        f_path.dentry
> #define f_vfsmnt        f_path.mnt
>         const struct file_operations    *f_op;
>         atomic_t                f_count;
>         unsigned int            f_flags;
>         mode_t                  f_mode;
>         loff_t                  f_pos;
> =============================================
> 
> Please let me know your comments on this.
> 



-- 


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