[lustre-devel] [PATCH v3 24/26] staging: lustre: libcfs: restore debugfs table reporting for UMP

[James Simmons]

With the cleanup of the libcfs SMP handling the function
cfs_cpt_table_print() was turned into an empty funciton.
This function is called by a debugfs reporting function for
debugging which now means for UMP machines it reports nothing
which breaks previous behavior exposed to users. Restore the
original behavior.

WC-bug-id: https://jira.whamcloud.com/browse/LU-9856
Signed-off-by: James Simmons <jsimmons at infradead.org>
---
 .../staging/lustre/include/linux/libcfs/libcfs_cpu.h  | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs_cpu.h b/drivers/staging/lustre/include/linux/libcfs/libcfs_cpu.h
index 29c5071..32776d2 100644
--- a/drivers/staging/lustre/include/linux/libcfs/libcfs_cpu.h
+++ b/drivers/staging/lustre/include/linux/libcfs/libcfs_cpu.h
@@ -218,6 +218,19 @@ void cfs_cpt_unset_nodemask(struct cfs_cpt_table *cptab,
 struct cfs_cpt_table;
 #define cfs_cpt_tab ((struct cfs_cpt_table *)NULL)
 
+static inline int cfs_cpt_table_print(struct cfs_cpt_table *cptab,
+				      char *buf, int len)
+{
+	int rc;
+
+	rc = snprintf(buf, len, "0\t: 0\n");
+	len -= rc;
+	if (len <= 0)
+		return -EFBIG;
+
+	return rc;
+}
+
 static inline int cfs_cpt_distance_print(struct cfs_cpt_table *cptab,
 					 char *buf, int len)
 {
@@ -237,12 +250,6 @@ static inline cpumask_var_t *cfs_cpt_cpumask(struct cfs_cpt_table *cptab,
 	return NULL;
 }
 
-static inline int cfs_cpt_table_print(struct cfs_cpt_table *cptab, char *buf,
-				      int len)
-{
-	return 0;
-}
-
 static inline int cfs_cpt_number(struct cfs_cpt_table *cptab)
 {
 	return 1;
-- 
1.8.3.1