Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 44 insertions, 6 deletions

diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 97742a7ea9c..47d0bda5ac2 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -19,6 +19,8 @@
 #include <linux/rculist_bl.h>
 #include <linux/completion.h>
 #include <linux/rbtree.h>
+#include <linux/ktime.h>
+#include <linux/percpu.h>
 
 #define DIO_WAIT	0x00000010
 #define DIO_METADATA	0x00000020
@@ -205,6 +207,22 @@ struct gfs2_glock_operations {
 };
 
 enum {
+	GFS2_LKS_SRTT = 0,	/* Non blocking smoothed round trip time */
+	GFS2_LKS_SRTTVAR = 1,	/* Non blocking smoothed variance */
+	GFS2_LKS_SRTTB = 2,	/* Blocking smoothed round trip time */
+	GFS2_LKS_SRTTVARB = 3,	/* Blocking smoothed variance */
+	GFS2_LKS_SIRT = 4,	/* Smoothed Inter-request time */
+	GFS2_LKS_SIRTVAR = 5,	/* Smoothed Inter-request variance */
+	GFS2_LKS_DCOUNT = 6,	/* Count of dlm requests */
+	GFS2_LKS_QCOUNT = 7,	/* Count of gfs2_holder queues */
+	GFS2_NR_LKSTATS
+};
+
+struct gfs2_lkstats {
+	s64 stats[GFS2_NR_LKSTATS];
+};
+
+enum {
 	/* States */
 	HIF_HOLDER		= 6,  /* Set for gh that "holds" the glock */
 	HIF_FIRST		= 7,
@@ -238,10 +256,12 @@ enum {
 	GLF_QUEUED			= 12,
 	GLF_LRU				= 13,
 	GLF_OBJECT			= 14, /* Used only for tracing */
+	GLF_BLOCKING			= 15,
 };
 
 struct gfs2_glock {
 	struct hlist_bl_node gl_list;
+	struct gfs2_sbd *gl_sbd;
 	unsigned long gl_flags;		/* GLF_... */
 	struct lm_lockname gl_name;
 	atomic_t gl_ref;
@@ -261,16 +281,14 @@ struct gfs2_glock {
 	struct list_head gl_holders;
 
 	const struct gfs2_glock_operations *gl_ops;
-	char gl_strname[GDLM_STRNAME_BYTES];
+	ktime_t gl_dstamp;
+	struct gfs2_lkstats gl_stats;
 	struct dlm_lksb gl_lksb;
 	char gl_lvb[32];
 	unsigned long gl_tchange;
 	void *gl_object;
 
 	struct list_head gl_lru;
-
-	struct gfs2_sbd *gl_sbd;
-
 	struct list_head gl_ail_list;
 	atomic_t gl_ail_count;
 	atomic_t gl_revokes;
@@ -560,8 +578,14 @@ struct lm_lockstruct {
 	uint32_t *ls_recover_result; /* result of last jid recovery */
 };
 
+struct gfs2_pcpu_lkstats {
+	/* One struct for each glock type */
+	struct gfs2_lkstats lkstats[10];
+};
+
 struct gfs2_sbd {
 	struct super_block *sd_vfs;
+	struct gfs2_pcpu_lkstats __percpu *sd_lkstats;
 	struct kobject sd_kobj;
 	unsigned long sd_flags;	/* SDF_... */
 	struct gfs2_sb_host sd_sb;
@@ -620,7 +644,6 @@ struct gfs2_sbd {
 
 	int sd_rindex_uptodate;
 	spinlock_t sd_rindex_spin;
-	struct mutex sd_rindex_mutex;
 	struct rb_root sd_rindex_tree;
 	unsigned int sd_rgrps;
 	unsigned int sd_max_rg_data;
@@ -725,8 +748,23 @@ struct gfs2_sbd {
 
 	unsigned long sd_last_warning;
 	struct dentry *debugfs_dir;    /* debugfs directory */
-	struct dentry *debugfs_dentry_glocks; /* for debugfs */
+	struct dentry *debugfs_dentry_glocks;
+	struct dentry *debugfs_dentry_glstats;
+	struct dentry *debugfs_dentry_sbstats;
 };
 
+static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which)
+{
+	gl->gl_stats.stats[which]++;
+}
+
+static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which)
+{
+	const struct gfs2_sbd *sdp = gl->gl_sbd;
+	preempt_disable();
+	this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++;
+	preempt_enable();
+}
+
 #endif /* __INCORE_DOT_H__ */