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staging: lustre: libcfs: add debugging info for libcfs_ioctl

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Added some lustre debugging to track down potential future
bugs.

Signed-off-by: Liang Zhen <liang.zhen@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5435
Reviewed-on: http://review.whamcloud.com/11313
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Johann Lombardi <johann.lombardi@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Liang Zhen 2016-03-22 19:03:52 -04:00 committed by Greg Kroah-Hartman
parent db469aa868
commit ea1bffa45b
1 changed files with 5 additions and 1 deletions
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6
drivers/staging/lustre/lnet/libcfs/module.c
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@ -121,8 +121,11 @@ static int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd,
/* 'cmd' and permissions get checked in our arch-specific caller */
err = libcfs_ioctl_getdata(&hdr, arg);
if (err)
if (err) {
CDEBUG_LIMIT(D_ERROR,
"libcfs ioctl: data header error %d\n", err);
return err;
}
/*
* The libcfs_ioctl_data_adjust() function performs adjustment
@ -137,6 +140,7 @@ static int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd,
goto out;
}
CDEBUG(D_IOCTL, "libcfs ioctl cmd %lu\n", cmd);
switch (cmd) {
case IOC_LIBCFS_CLEAR_DEBUG:
libcfs_debug_clear_buffer();