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path: root/drivers/infiniband/hw/hfi1/debugfs.c
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Diffstat (limited to 'drivers/infiniband/hw/hfi1/debugfs.c')
-rw-r--r--drivers/infiniband/hw/hfi1/debugfs.c222
1 files changed, 222 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/debugfs.c b/drivers/infiniband/hw/hfi1/debugfs.c
index 7fe9dd885746..cac6d5256f40 100644
--- a/drivers/infiniband/hw/hfi1/debugfs.c
+++ b/drivers/infiniband/hw/hfi1/debugfs.c
@@ -51,8 +51,12 @@
#include <linux/export.h>
#include <linux/module.h>
#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/ratelimit.h>
+#include <linux/fault-inject.h>
#include "hfi.h"
+#include "trace.h"
#include "debugfs.h"
#include "device.h"
#include "qp.h"
@@ -1063,6 +1067,217 @@ DEBUGFS_SEQ_FILE_OPS(sdma_cpu_list);
DEBUGFS_SEQ_FILE_OPEN(sdma_cpu_list)
DEBUGFS_FILE_OPS(sdma_cpu_list);
+#ifdef CONFIG_FAULT_INJECTION
+static void *_fault_stats_seq_start(struct seq_file *s, loff_t *pos)
+{
+ struct hfi1_opcode_stats_perctx *opstats;
+
+ if (*pos >= ARRAY_SIZE(opstats->stats))
+ return NULL;
+ return pos;
+}
+
+static void *_fault_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
+{
+ struct hfi1_opcode_stats_perctx *opstats;
+
+ ++*pos;
+ if (*pos >= ARRAY_SIZE(opstats->stats))
+ return NULL;
+ return pos;
+}
+
+static void _fault_stats_seq_stop(struct seq_file *s, void *v)
+{
+}
+
+static int _fault_stats_seq_show(struct seq_file *s, void *v)
+{
+ loff_t *spos = v;
+ loff_t i = *spos, j;
+ u64 n_packets = 0, n_bytes = 0;
+ struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
+ struct hfi1_devdata *dd = dd_from_dev(ibd);
+
+ for (j = 0; j < dd->first_user_ctxt; j++) {
+ if (!dd->rcd[j])
+ continue;
+ n_packets += dd->rcd[j]->opstats->stats[i].n_packets;
+ n_bytes += dd->rcd[j]->opstats->stats[i].n_bytes;
+ }
+ if (!n_packets && !n_bytes)
+ return SEQ_SKIP;
+ if (!ibd->fault_opcode->n_rxfaults[i] &&
+ !ibd->fault_opcode->n_txfaults[i])
+ return SEQ_SKIP;
+ seq_printf(s, "%02llx %llu/%llu (faults rx:%llu faults: tx:%llu)\n", i,
+ (unsigned long long)n_packets,
+ (unsigned long long)n_bytes,
+ (unsigned long long)ibd->fault_opcode->n_rxfaults[i],
+ (unsigned long long)ibd->fault_opcode->n_txfaults[i]);
+ return 0;
+}
+
+DEBUGFS_SEQ_FILE_OPS(fault_stats);
+DEBUGFS_SEQ_FILE_OPEN(fault_stats);
+DEBUGFS_FILE_OPS(fault_stats);
+
+static void fault_exit_opcode_debugfs(struct hfi1_ibdev *ibd)
+{
+ debugfs_remove_recursive(ibd->fault_opcode->dir);
+ kfree(ibd->fault_opcode);
+ ibd->fault_opcode = NULL;
+}
+
+static int fault_init_opcode_debugfs(struct hfi1_ibdev *ibd)
+{
+ struct dentry *parent = ibd->hfi1_ibdev_dbg;
+
+ ibd->fault_opcode = kzalloc(sizeof(*ibd->fault_opcode), GFP_KERNEL);
+ if (!ibd->fault_opcode)
+ return -ENOMEM;
+
+ ibd->fault_opcode->attr.interval = 1;
+ ibd->fault_opcode->attr.require_end = ULONG_MAX;
+ ibd->fault_opcode->attr.stacktrace_depth = 32;
+ ibd->fault_opcode->attr.dname = NULL;
+ ibd->fault_opcode->attr.verbose = 0;
+ ibd->fault_opcode->fault_by_opcode = false;
+ ibd->fault_opcode->opcode = 0;
+ ibd->fault_opcode->mask = 0xff;
+
+ ibd->fault_opcode->dir =
+ fault_create_debugfs_attr("fault_opcode",
+ parent,
+ &ibd->fault_opcode->attr);
+ if (IS_ERR(ibd->fault_opcode->dir)) {
+ kfree(ibd->fault_opcode);
+ return -ENOENT;
+ }
+
+ DEBUGFS_SEQ_FILE_CREATE(fault_stats, ibd->fault_opcode->dir, ibd);
+ if (!debugfs_create_bool("fault_by_opcode", 0600,
+ ibd->fault_opcode->dir,
+ &ibd->fault_opcode->fault_by_opcode))
+ goto fail;
+ if (!debugfs_create_x8("opcode", 0600, ibd->fault_opcode->dir,
+ &ibd->fault_opcode->opcode))
+ goto fail;
+ if (!debugfs_create_x8("mask", 0600, ibd->fault_opcode->dir,
+ &ibd->fault_opcode->mask))
+ goto fail;
+
+ return 0;
+fail:
+ fault_exit_opcode_debugfs(ibd);
+ return -ENOMEM;
+}
+
+static void fault_exit_packet_debugfs(struct hfi1_ibdev *ibd)
+{
+ debugfs_remove_recursive(ibd->fault_packet->dir);
+ kfree(ibd->fault_packet);
+ ibd->fault_packet = NULL;
+}
+
+static int fault_init_packet_debugfs(struct hfi1_ibdev *ibd)
+{
+ struct dentry *parent = ibd->hfi1_ibdev_dbg;
+
+ ibd->fault_packet = kzalloc(sizeof(*ibd->fault_packet), GFP_KERNEL);
+ if (!ibd->fault_packet)
+ return -ENOMEM;
+
+ ibd->fault_packet->attr.interval = 1;
+ ibd->fault_packet->attr.require_end = ULONG_MAX;
+ ibd->fault_packet->attr.stacktrace_depth = 32;
+ ibd->fault_packet->attr.dname = NULL;
+ ibd->fault_packet->attr.verbose = 0;
+ ibd->fault_packet->fault_by_packet = false;
+
+ ibd->fault_packet->dir =
+ fault_create_debugfs_attr("fault_packet",
+ parent,
+ &ibd->fault_opcode->attr);
+ if (IS_ERR(ibd->fault_packet->dir)) {
+ kfree(ibd->fault_packet);
+ return -ENOENT;
+ }
+
+ if (!debugfs_create_bool("fault_by_packet", 0600,
+ ibd->fault_packet->dir,
+ &ibd->fault_packet->fault_by_packet))
+ goto fail;
+ if (!debugfs_create_u64("fault_stats", 0400,
+ ibd->fault_packet->dir,
+ &ibd->fault_packet->n_faults))
+ goto fail;
+
+ return 0;
+fail:
+ fault_exit_packet_debugfs(ibd);
+ return -ENOMEM;
+}
+
+static void fault_exit_debugfs(struct hfi1_ibdev *ibd)
+{
+ fault_exit_opcode_debugfs(ibd);
+ fault_exit_packet_debugfs(ibd);
+}
+
+static int fault_init_debugfs(struct hfi1_ibdev *ibd)
+{
+ int ret = 0;
+
+ ret = fault_init_opcode_debugfs(ibd);
+ if (ret)
+ return ret;
+
+ ret = fault_init_packet_debugfs(ibd);
+ if (ret)
+ fault_exit_opcode_debugfs(ibd);
+
+ return ret;
+}
+
+bool hfi1_dbg_fault_opcode(struct rvt_qp *qp, u32 opcode, bool rx)
+{
+ bool ret = false;
+ struct hfi1_ibdev *ibd = to_idev(qp->ibqp.device);
+
+ if (!ibd->fault_opcode || !ibd->fault_opcode->fault_by_opcode)
+ return false;
+ if (ibd->fault_opcode->opcode != (opcode & ibd->fault_opcode->mask))
+ return false;
+ ret = should_fail(&ibd->fault_opcode->attr, 1);
+ if (ret) {
+ trace_hfi1_fault_opcode(qp, opcode);
+ if (rx)
+ ibd->fault_opcode->n_rxfaults[opcode]++;
+ else
+ ibd->fault_opcode->n_txfaults[opcode]++;
+ }
+ return ret;
+}
+
+bool hfi1_dbg_fault_packet(struct hfi1_packet *packet)
+{
+ struct rvt_dev_info *rdi = &packet->rcd->ppd->dd->verbs_dev.rdi;
+ struct hfi1_ibdev *ibd = dev_from_rdi(rdi);
+ bool ret = false;
+
+ if (!ibd->fault_packet || !ibd->fault_packet->fault_by_packet)
+ return false;
+
+ ret = should_fail(&ibd->fault_packet->attr, 1);
+ if (ret) {
+ ++ibd->fault_packet->n_faults;
+ trace_hfi1_fault_packet(packet);
+ }
+ return ret;
+}
+#endif
+
void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd)
{
char name[sizeof("port0counters") + 1];
@@ -1112,12 +1327,19 @@ void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd)
!port_cntr_ops[i].ops.write ?
S_IRUGO : S_IRUGO | S_IWUSR);
}
+
+#ifdef CONFIG_FAULT_INJECTION
+ fault_init_debugfs(ibd);
+#endif
}
void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd)
{
if (!hfi1_dbg_root)
goto out;
+#ifdef CONFIG_FAULT_INJECTION
+ fault_exit_debugfs(ibd);
+#endif
debugfs_remove(ibd->hfi1_ibdev_link);
debugfs_remove_recursive(ibd->hfi1_ibdev_dbg);
out:
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-18 21:40:54 +0300