From 9a3d6c2ed76ba902158a101be5b3dce46ca8f630 Mon Sep 17 00:00:00 2001
From: bwzhou <bwzhou>
Date: Fri, 9 May 2008 18:04:29 +0000
Subject: [PATCH] Branch HEAD b=15521 r=adilger, bobijam

fix the wrong lprcfs stats
---
 lustre/include/lprocfs_status.h  |  2 ++
 lustre/lvfs/lvfs_lib.c           |  2 +-
 lustre/lvfs/lvfs_linux.c         |  2 +-
 lustre/obdclass/lprocfs_status.c | 12 ++++++------
 4 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/lustre/include/lprocfs_status.h b/lustre/include/lprocfs_status.h
index 07f5c8f..0f4d9b3 100644
--- a/lustre/include/lprocfs_status.h
+++ b/lustre/include/lprocfs_status.h
@@ -121,6 +121,8 @@ struct lprocfs_atomic {
         atomic_t               la_exit;
 };
 
+#define LC_MIN_INIT ((~(__u64)0) >> 1)
+
 struct lprocfs_counter {
         struct lprocfs_atomic  lc_cntl;  /* may need to move to per set */
         unsigned int           lc_config;
diff --git a/lustre/lvfs/lvfs_lib.c b/lustre/lvfs/lvfs_lib.c
index a83c171..5725e25 100644
--- a/lustre/lvfs/lvfs_lib.c
+++ b/lustre/lvfs/lvfs_lib.c
@@ -145,7 +145,7 @@ void lprocfs_counter_add(struct lprocfs_stats *stats, int idx,
         if (percpu_cntr->lc_config & LPROCFS_CNTR_AVGMINMAX) {
                 percpu_cntr->lc_sum += amount;
                 if (percpu_cntr->lc_config & LPROCFS_CNTR_STDDEV)
-                        percpu_cntr->lc_sumsquare += (__u64)amount * amount;
+                        percpu_cntr->lc_sumsquare += (__s64)amount * amount;
                 if (amount < percpu_cntr->lc_min)
                         percpu_cntr->lc_min = amount;
                 if (amount > percpu_cntr->lc_max)
diff --git a/lustre/lvfs/lvfs_linux.c b/lustre/lvfs/lvfs_linux.c
index e342eeb..fef6996 100644
--- a/lustre/lvfs/lvfs_linux.c
+++ b/lustre/lvfs/lvfs_linux.c
@@ -727,7 +727,7 @@ EXPORT_SYMBOL(obd_memory);
 __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
                           enum lprocfs_fields_flags field)
 {
-        __u64 ret = 0;
+        __s64 ret = 0;
         int centry;
 
         if (!lc)
diff --git a/lustre/obdclass/lprocfs_status.c b/lustre/obdclass/lprocfs_status.c
index 002b4ae..608af88 100644
--- a/lustre/obdclass/lprocfs_status.c
+++ b/lustre/obdclass/lprocfs_status.c
@@ -844,7 +844,7 @@ void lprocfs_clear_stats(struct lprocfs_stats *stats)
                         atomic_inc(&percpu_cntr->lc_cntl.la_entry);
                         percpu_cntr->lc_count = 0;
                         percpu_cntr->lc_sum = 0;
-                        percpu_cntr->lc_min = ~(__u64)0;
+                        percpu_cntr->lc_min = LC_MIN_INIT;
                         percpu_cntr->lc_max = 0;
                         percpu_cntr->lc_sumsquare = 0;
                         atomic_inc(&percpu_cntr->lc_cntl.la_exit);
@@ -890,7 +890,7 @@ static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
 {
        struct lprocfs_stats *stats = p->private;
        struct lprocfs_counter  *cntr = v;
-       struct lprocfs_counter  t, ret = { .lc_min = ~(__u64)0 };
+       struct lprocfs_counter  t, ret = { .lc_min = LC_MIN_INIT };
        int i, idx, rc;
        unsigned int num_cpu;
 
@@ -932,18 +932,18 @@ static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
                ret.lc_sumsquare += t.lc_sumsquare;
        }
 
-       rc = seq_printf(p, "%-25s "LPU64" samples [%s]", cntr->lc_name,
+       rc = seq_printf(p, "%-25s "LPD64" samples [%s]", cntr->lc_name,
                        ret.lc_count, cntr->lc_units);
        if (rc < 0)
                goto out;
 
        if ((cntr->lc_config & LPROCFS_CNTR_AVGMINMAX) && (ret.lc_count > 0)) {
-               rc = seq_printf(p, " "LPU64" "LPU64" "LPU64,
+               rc = seq_printf(p, " "LPD64" "LPD64" "LPD64,
                                ret.lc_min, ret.lc_max, ret.lc_sum);
                if (rc < 0)
                        goto out;
                if (cntr->lc_config & LPROCFS_CNTR_STDDEV)
-                       rc = seq_printf(p, " "LPU64, ret.lc_sumsquare);
+                       rc = seq_printf(p, " "LPD64, ret.lc_sumsquare);
                if (rc < 0)
                        goto out;
        }
@@ -1015,7 +1015,7 @@ void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
                 c->lc_config = conf;
                 c->lc_count = 0;
                 c->lc_sum = 0;
-                c->lc_min = ~(__u64)0;
+                c->lc_min = LC_MIN_INIT;
                 c->lc_max = 0;
                 c->lc_name = name;
                 c->lc_units = units;
-- 
1.8.3.1