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Subject[PATCH 34/47] staging/lustre/libcfs: add CPU table functions for uniprocessor
Date
From: Li Xi <lixi@ddn.com>

Some CPU table functions for uniprocessor architecture is
missing.

Signed-off-by: Li Xi <lixi@ddn.com>
Signed-off-by: James Simmons <uja.ornl@gmail.com>
Reviewed-on: http://review.whamcloud.com/8873
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4199
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Liang Zhen <liang.zhen@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
---
.../lustre/include/linux/libcfs/libcfs_cpu.h | 5 +++++
.../lustre/include/linux/libcfs/linux/linux-mem.h | 5 +++++
drivers/staging/lustre/lustre/libcfs/libcfs_cpu.c | 21 +++++++++++++++++++++
3 files changed, 31 insertions(+)

diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs_cpu.h b/drivers/staging/lustre/include/linux/libcfs/libcfs_cpu.h
index d116fdf..a140e5d 100644
--- a/drivers/staging/lustre/include/linux/libcfs/libcfs_cpu.h
+++ b/drivers/staging/lustre/include/linux/libcfs/libcfs_cpu.h
@@ -203,6 +203,11 @@ void cfs_cpt_clear(struct cfs_cpt_table *cptab, int cpt);
int cfs_cpt_spread_node(struct cfs_cpt_table *cptab, int cpt);

/**
+ * return number of HTs in the same core of \a cpu
+ */
+int cfs_cpu_ht_nsiblings(int cpu);
+
+/**
* iterate over all CPU partitions in \a cptab
*/
#define cfs_cpt_for_each(i, cptab) \
diff --git a/drivers/staging/lustre/include/linux/libcfs/linux/linux-mem.h b/drivers/staging/lustre/include/linux/libcfs/linux/linux-mem.h
index 2af15d4..72c76ad 100644
--- a/drivers/staging/lustre/include/linux/libcfs/linux/linux-mem.h
+++ b/drivers/staging/lustre/include/linux/libcfs/linux/linux-mem.h
@@ -53,6 +53,11 @@
#include <linux/memcontrol.h>
#include <linux/mm_inline.h>

+#ifndef HAVE_LIBCFS_CPT
+/* Need this for cfs_cpt_table */
+#include <libcfs/libcfs_cpu.h>
+#endif
+
#define CFS_PAGE_MASK (~((__u64)PAGE_CACHE_SIZE-1))
#define page_index(p) ((p)->index)

diff --git a/drivers/staging/lustre/lustre/libcfs/libcfs_cpu.c b/drivers/staging/lustre/lustre/libcfs/libcfs_cpu.c
index 1fb3700..d985e83 100644
--- a/drivers/staging/lustre/lustre/libcfs/libcfs_cpu.c
+++ b/drivers/staging/lustre/lustre/libcfs/libcfs_cpu.c
@@ -75,6 +75,20 @@ cfs_cpt_table_free(struct cfs_cpt_table *cptab)
EXPORT_SYMBOL(cfs_cpt_table_free);

int
+cfs_cpt_table_print(struct cfs_cpt_table *cptab, char *buf, int len)
+{
+ int rc = 0;
+
+ rc = snprintf(buf, len, "%d\t: %d\n", 0, 0);
+ len -= rc;
+ if (len <= 0)
+ return -EFBIG;
+
+ return rc;
+}
+EXPORT_SYMBOL(cfs_cpt_table_print);
+
+int
cfs_cpt_number(struct cfs_cpt_table *cptab)
{
return 1;
@@ -161,6 +175,13 @@ cfs_cpt_spread_node(struct cfs_cpt_table *cptab, int cpt)
EXPORT_SYMBOL(cfs_cpt_spread_node);

int
+cfs_cpu_ht_nsiblings(int cpu)
+{
+ return 1;
+}
+EXPORT_SYMBOL(cfs_cpu_ht_nsiblings);
+
+int
cfs_cpt_current(struct cfs_cpt_table *cptab, int remap)
{
return 0;
--
1.8.5.3


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