Use the same per-CPU scheme used in the main XFS statistics, as well as
the VFS inode and dcache statistics for the quota code.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
fs/xfs/xfs_dquot.c | 6 +++---
fs/xfs/xfs_qm.c | 6 +++---
fs/xfs/xfs_qm_stats.c | 28 +++++++++++++++++-----------
fs/xfs/xfs_qm_stats.h | 11 ++++++++---
4 files changed, 31 insertions(+), 20 deletions(-)
Index: xfs/fs/xfs/xfs_dquot.c
===================================================================
--- xfs.orig/fs/xfs/xfs_dquot.c 2012-02-12 13:22:33.326936637 -0800
+++ xfs/fs/xfs/xfs_dquot.c 2012-02-12 13:22:45.036936854 -0800
@@ -663,13 +663,13 @@ restart:
mutex_unlock(&mp->m_quotainfo->qi_tree_lock);
trace_xfs_dqget_hit(dqp);
- XQM_STATS_INC(xqmstats.xs_qm_dqcachehits);
+ XQM_STATS_INC(xs_qm_dqcachehits);
*O_dqpp = dqp;
return 0;
}
mutex_unlock(&mp->m_quotainfo->qi_tree_lock);
- XQM_STATS_INC(xqmstats.xs_qm_dqcachemisses);
+ XQM_STATS_INC(xs_qm_dqcachemisses);
/*
* Dquot cache miss. We don't want to keep the inode lock across
@@ -723,7 +723,7 @@ restart:
mutex_unlock(&mp->m_quotainfo->qi_tree_lock);
trace_xfs_dqget_dup(dqp);
xfs_qm_dqdestroy(dqp);
- XQM_STATS_INC(xqmstats.xs_qm_dquot_dups);
+ XQM_STATS_INC(xs_qm_dquot_dups);
goto restart;
}
Index: xfs/fs/xfs/xfs_qm.c
===================================================================
--- xfs.orig/fs/xfs/xfs_qm.c 2012-02-12 13:22:33.326936637 -0800
+++ xfs/fs/xfs/xfs_qm.c 2012-02-12 13:22:45.036936854 -0800
@@ -1518,7 +1518,7 @@ xfs_qm_dqreclaim_one(
xfs_dqunlock(dqp);
trace_xfs_dqreclaim_want(dqp);
- XQM_STATS_INC(xqmstats.xs_qm_dqwants);
+ XQM_STATS_INC(xs_qm_dqwants);
list_del_init(&dqp->q_lru);
qi->qi_lru_count--;
@@ -1572,7 +1572,7 @@ xfs_qm_dqreclaim_one(
qi->qi_lru_count--;
trace_xfs_dqreclaim_done(dqp);
- XQM_STATS_INC(xqmstats.xs_qm_dqreclaims);
+ XQM_STATS_INC(xs_qm_dqreclaims);
return;
out_busy:
@@ -1584,7 +1584,7 @@ out_busy:
list_move_tail(&dqp->q_lru, &qi->qi_lru_list);
trace_xfs_dqreclaim_busy(dqp);
- XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses);
+ XQM_STATS_INC(xs_qm_dqreclaim_misses);
}
STATIC int
Index: xfs/fs/xfs/xfs_qm_stats.c
===================================================================
--- xfs.orig/fs/xfs/xfs_qm_stats.c 2012-02-12 13:19:02.843599401 -0800
+++ xfs/fs/xfs/xfs_qm_stats.c 2012-02-12 13:22:45.040270187 -0800
@@ -36,7 +36,16 @@
#include "xfs_buf_item.h"
#include "xfs_qm.h"
-struct xqmstats xqmstats;
+DEFINE_PER_CPU(struct xqmstats, xqmstats);
+
+static int xqmstats_sum(int idx)
+{
+ int val = 0, cpu;
+
+ for_each_possible_cpu(cpu)
+ val += *(((__u32 *)&per_cpu(xqmstats, cpu) + idx));
+ return max(val, 0);
+}
static int xqm_proc_show(struct seq_file *m, void *v)
{
@@ -64,16 +73,13 @@ static const struct file_operations xqm_
static int xqmstat_proc_show(struct seq_file *m, void *v)
{
- /* quota performance statistics */
- seq_printf(m, "qm %u %u %u %u %u %u %u %u\n",
- xqmstats.xs_qm_dqreclaims,
- xqmstats.xs_qm_dqreclaim_misses,
- xqmstats.xs_qm_dquot_dups,
- xqmstats.xs_qm_dqcachemisses,
- xqmstats.xs_qm_dqcachehits,
- xqmstats.xs_qm_dqwants,
- xqmstats.xs_qm_dqshake_reclaims,
- xqmstats.xs_qm_dqinact_reclaims);
+ int j;
+
+ seq_printf(m, "qm");
+ for (j = 0; j < XQMSTAT_END_XQMSTAT; j++)
+ seq_printf(m, " %u", xqmstats_sum(j));
+ seq_putc(m, '\n');
+
return 0;
}
Index: xfs/fs/xfs/xfs_qm_stats.h
===================================================================
--- xfs.orig/fs/xfs/xfs_qm_stats.h 2012-02-07 10:00:57.291250941 -0800
+++ xfs/fs/xfs/xfs_qm_stats.h 2012-02-12 13:22:45.040270187 -0800
@@ -32,18 +32,23 @@ struct xqmstats {
__uint32_t xs_qm_dqwants;
__uint32_t xs_qm_dqshake_reclaims;
__uint32_t xs_qm_dqinact_reclaims;
+#define XQMSTAT_END_XQMSTAT 8
};
-extern struct xqmstats xqmstats;
+DECLARE_PER_CPU(struct xqmstats, xqmstats);
-# define XQM_STATS_INC(count) ( (count)++ )
+/*
+ * We don't disable preempt, not too worried about poking the
+ * wrong CPU's stat for now (also aggregated before reporting).
+ */
+# define XQM_STATS_INC(v) (per_cpu(xqmstats, current_cpu()).v++)
extern void xfs_qm_init_procfs(void);
extern void xfs_qm_cleanup_procfs(void);
#else
-# define XQM_STATS_INC(count) do { } while (0)
+# define XQM_STATS_INC(v) do { } while (0)
static inline void xfs_qm_init_procfs(void) { };
static inline void xfs_qm_cleanup_procfs(void) { };
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