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Re: [Bug testsuite/4254] 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.


-- Pierre Peiffer


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