1 files changed, 43 insertions, 2 deletions

diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c
index 73b0ca061bb5..ee74821b171c 100644
--- a/drivers/misc/sgi-gru/gruprocfs.c
+++ b/drivers/misc/sgi-gru/gruprocfs.c
@@ -62,7 +62,9 @@ static int statistics_show(struct seq_file *s, void *p)
         printstat(s, asid_wrap);
         printstat(s, asid_reuse);
         printstat(s, intr);
+        printstat(s, intr_mm_lock_failed);
         printstat(s, call_os);
+        printstat(s, call_os_offnode_reference);
         printstat(s, call_os_check_for_bug);
         printstat(s, call_os_wait_queue);
         printstat(s, user_flush_tlb);
@@ -120,6 +122,30 @@ static ssize_t statistics_write(struct file *file, const char __user *userbuf,
         return count;
 }
 
+static int mcs_statistics_show(struct seq_file *s, void *p)
+{
+        int op;
+        unsigned long total, count, max;
+        static char *id[] = {"cch_allocate", "cch_start", "cch_interrupt",
+                "cch_interrupt_sync", "cch_deallocate", "tgh_invalidate"};
+
+        for (op = 0; op < mcsop_last; op++) {
+                count = atomic_long_read(&mcs_op_statistics[op].count);
+                total = atomic_long_read(&mcs_op_statistics[op].total);
+                max = mcs_op_statistics[op].max;
+                seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count,
+                           count ? total / count : 0, max);
+        }
+        return 0;
+}
+
+static ssize_t mcs_statistics_write(struct file *file,
+                        const char __user *userbuf, size_t count, loff_t *data)
+{
+        memset(mcs_op_statistics, 0, sizeof(mcs_op_statistics));
+        return count;
+}
+
 static int options_show(struct seq_file *s, void *p)
 {
         seq_printf(s, "0x%lx\n", gru_options);
@@ -135,6 +161,7 @@ static ssize_t options_write(struct file *file, const char __user *userbuf,
         if (copy_from_user
             (buf, userbuf, count < sizeof(buf) ? count : sizeof(buf)))
                 return -EFAULT;
+        buf[count - 1] = '\0';
         if (!strict_strtoul(buf, 10, &val))
                 gru_options = val;
 
@@ -199,7 +226,7 @@ static void seq_stop(struct seq_file *file, void *data)
 
 static void *seq_start(struct seq_file *file, loff_t *gid)
 {
-        if (*gid < GRU_MAX_GRUS)
+        if (*gid < gru_max_gids)
                 return gid;
         return NULL;
 }
@@ -207,7 +234,7 @@ static void *seq_start(struct seq_file *file, loff_t *gid)
 static void *seq_next(struct seq_file *file, void *data, loff_t *gid)
 {
         (*gid)++;
-        if (*gid < GRU_MAX_GRUS)
+        if (*gid < gru_max_gids)
                 return gid;
         return NULL;
 }
@@ -231,6 +258,11 @@ static int statistics_open(struct inode *inode, struct file *file)
         return single_open(file, statistics_show, NULL);
 }
 
+static int mcs_statistics_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, mcs_statistics_show, NULL);
+}
+
 static int options_open(struct inode *inode, struct file *file)
 {
         return single_open(file, options_show, NULL);
@@ -255,6 +287,14 @@ static const struct file_operations statistics_fops = {
         .release        = single_release,
 };
 
+static const struct file_operations mcs_statistics_fops = {
+        .open           = mcs_statistics_open,
+        .read           = seq_read,
+        .write          = mcs_statistics_write,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
 static const struct file_operations options_fops = {
         .open           = options_open,
         .read           = seq_read,
@@ -283,6 +323,7 @@ static struct proc_entry {
         struct proc_dir_entry *entry;
 } proc_files[] = {
         {"statistics", 0644, &statistics_fops},
+        {"mcs_statistics", 0644, &mcs_statistics_fops},
         {"debug_options", 0644, &options_fops},
         {"cch_status", 0444, &cch_fops},
         {"gru_status", 0444, &gru_fops},