#define RCU_TREE_NONCORE
#include "rcutree.h"
+#define ulong2long(a) (*(long *)(&(a)))
+
static int r_open(struct inode *inode, struct file *file,
const struct seq_operations *op)
{
.release = single_release,
};
+static int new_show_rcubarrier(struct seq_file *m, void *v)
+{
+ struct rcu_state *rsp = (struct rcu_state *)m->private;
+ seq_printf(m, "bcc: %d nbd: %lu\n",
+ atomic_read(&rsp->barrier_cpu_count),
+ rsp->n_barrier_done);
+ return 0;
+}
+
+static int new_rcubarrier_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, new_show_rcubarrier, inode->i_private);
+}
+
+static const struct file_operations new_rcubarrier_fops = {
+ .owner = THIS_MODULE,
+ .open = new_rcubarrier_open,
+ .read = seq_read,
+ .llseek = no_llseek,
+ .release = seq_release,
+};
+
#ifdef CONFIG_RCU_BOOST
static char convert_kthread_status(unsigned int kthread_status)
{
if (!rdp->beenonline)
return;
- seq_printf(m, "%3d%cc=%lu g=%lu pq=%d qp=%d",
+ seq_printf(m, "%3d%cc=%ld g=%ld pq=%d qp=%d",
rdp->cpu,
cpu_is_offline(rdp->cpu) ? '!' : ' ',
- rdp->completed, rdp->gpnum,
+ ulong2long(rdp->completed), ulong2long(rdp->gpnum),
rdp->passed_quiesce, rdp->qs_pending);
seq_printf(m, " dt=%d/%llx/%d df=%lu",
atomic_read(&rdp->dynticks->dynticks),
.release = seq_release,
};
-static void print_one_rcu_data_csv(struct seq_file *m, struct rcu_data *rdp)
-{
- if (!rdp->beenonline)
- return;
- seq_printf(m, "%d,%s,%lu,%lu,%d,%d",
- rdp->cpu,
- cpu_is_offline(rdp->cpu) ? "\"N\"" : "\"Y\"",
- rdp->completed, rdp->gpnum,
- rdp->passed_quiesce, rdp->qs_pending);
- seq_printf(m, ",%d,%llx,%d,%lu",
- atomic_read(&rdp->dynticks->dynticks),
- rdp->dynticks->dynticks_nesting,
- rdp->dynticks->dynticks_nmi_nesting,
- rdp->dynticks_fqs);
- seq_printf(m, ",%lu", rdp->offline_fqs);
- seq_printf(m, ",%ld,%ld,\"%c%c%c%c\"", rdp->qlen_lazy, rdp->qlen,
- ".N"[rdp->nxttail[RCU_NEXT_READY_TAIL] !=
- rdp->nxttail[RCU_NEXT_TAIL]],
- ".R"[rdp->nxttail[RCU_WAIT_TAIL] !=
- rdp->nxttail[RCU_NEXT_READY_TAIL]],
- ".W"[rdp->nxttail[RCU_DONE_TAIL] !=
- rdp->nxttail[RCU_WAIT_TAIL]],
- ".D"[&rdp->nxtlist != rdp->nxttail[RCU_DONE_TAIL]]);
-#ifdef CONFIG_RCU_BOOST
- seq_printf(m, ",%d,\"%c\"",
- per_cpu(rcu_cpu_has_work, rdp->cpu),
- convert_kthread_status(per_cpu(rcu_cpu_kthread_status,
- rdp->cpu)));
-#endif /* #ifdef CONFIG_RCU_BOOST */
- seq_printf(m, ",%ld", rdp->blimit);
- seq_printf(m, ",%lu,%lu,%lu\n",
- rdp->n_cbs_invoked, rdp->n_cbs_orphaned, rdp->n_cbs_adopted);
-}
-
-static int show_rcudata_csv(struct seq_file *m, void *v)
-{
- struct rcu_data *rdp = (struct rcu_data *)v;
- if (cpumask_first(cpu_possible_mask) == rdp->cpu) {
- seq_puts(m, "\"CPU\",\"Online?\",\"c\",\"g\",\"pq\",\"pq\",");
- seq_puts(m, "\"dt\",\"dt nesting\",\"dt NMI nesting\",\"df\",");
- seq_puts(m, "\"of\",\"qll\",\"ql\",\"qs\"");
-#ifdef CONFIG_RCU_BOOST
- seq_puts(m, "\"kt\",\"ktl\"");
-#endif /* #ifdef CONFIG_RCU_BOOST */
- seq_puts(m, ",\"b\",\"ci\",\"co\",\"ca\"\n");
- }
-
- print_one_rcu_data_csv(m, rdp);
- return 0;
-}
-
-static const struct seq_operations rcudate_csv_op = {
- .start = r_start,
- .next = r_next,
- .stop = r_stop,
- .show = show_rcudata_csv,
-};
-
-static int rcudata_csv_open(struct inode *inode, struct file *file)
-{
- return r_open(inode, file, &rcudate_csv_op);
-}
-
-static const struct file_operations rcudata_csv_fops = {
- .owner = THIS_MODULE,
- .open = rcudata_csv_open,
- .read = seq_read,
- .llseek = no_llseek,
- .release = seq_release,
-};
-
#ifdef CONFIG_RCU_BOOST
static void print_one_rcu_node_boost(struct seq_file *m, struct rcu_node *rnp)
struct rcu_node *rnp;
gpnum = rsp->gpnum;
- seq_printf(m, "%s: c=%lu g=%lu s=%d jfq=%ld j=%x ",
- rsp->name, rsp->completed, gpnum, rsp->fqs_state,
+ seq_printf(m, "%s: c=%ld g=%ld s=%d jfq=%ld j=%x ",
+ rsp->name, ulong2long(rsp->completed), ulong2long(gpnum),
+ rsp->fqs_state,
(long)(rsp->jiffies_force_qs - jiffies),
(int)(jiffies & 0xffff));
seq_printf(m, "nfqs=%lu/nfqsng=%lu(%lu) fqlh=%lu oqlen=%ld/%ld\n",
struct rcu_node *rnp = &rsp->node[0];
raw_spin_lock_irqsave(&rnp->lock, flags);
- completed = rsp->completed;
- gpnum = rsp->gpnum;
- if (rsp->completed == rsp->gpnum)
+ completed = ACCESS_ONCE(rsp->completed);
+ gpnum = ACCESS_ONCE(rsp->gpnum);
+ if (completed == gpnum)
gpage = 0;
else
gpage = jiffies - rsp->gp_start;
gpmax = rsp->gp_max;
raw_spin_unlock_irqrestore(&rnp->lock, flags);
- seq_printf(m, "%s: completed=%ld gpnum=%lu age=%ld max=%ld\n",
- rsp->name, completed, gpnum, gpage, gpmax);
+ seq_printf(m, "%s: completed=%ld gpnum=%ld age=%ld max=%ld\n",
+ rsp->name, ulong2long(completed), ulong2long(gpnum), gpage, gpmax);
}
static int show_rcugp(struct seq_file *m, void *unused)
if (!retval)
goto free_out;
- retval = debugfs_create_file("rcudata.csv", 0444,
- rspdir, rsp, &rcudata_csv_fops);
+ retval = debugfs_create_file("rcu_pending", 0444,
+ rspdir, rsp, &rcu_pending_fops);
if (!retval)
goto free_out;
- retval = debugfs_create_file("rcu_pending", 0444,
- rspdir, rsp, &rcu_pending_fops);
+ retval = debugfs_create_file("rcubarrier", 0444,
+ rspdir, rsp, &new_rcubarrier_fops);
if (!retval)
goto free_out;
}
projects / linux-2.6-block.git / blobdiff