Add a couple of trace points in the VAS driver
Signed-off-by: Sukadev Bhattiprolu <suka...@linux.vnet.ibm.com>
---
Changelog [v2]
- Make TRACE_INCLUDE_PATH relative to <trace/define_trace.h>
---
arch/powerpc/platforms/powernv/vas-trace.h | 112 ++++++++++++++++++++++++++++
arch/powerpc/platforms/powernv/vas-window.c | 9 +++
2 files changed, 121 insertions(+)
create mode 100644 arch/powerpc/platforms/powernv/vas-trace.h
diff --git a/arch/powerpc/platforms/powernv/vas-trace.h
b/arch/powerpc/platforms/powernv/vas-trace.h
new file mode 100644
index 0000000..939d85d
--- /dev/null
+++ b/arch/powerpc/platforms/powernv/vas-trace.h
@@ -0,0 +1,112 @@
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM vas
+
+#if !defined(_VAS_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
+
+#define _VAS_TRACE_H
+#include <linux/tracepoint.h>
+#include <linux/sched.h>
+#include <asm/vas.h>
+
+TRACE_EVENT( vas_rx_win_open,
+
+ TP_PROTO(struct task_struct *tsk,
+ int vasid,
+ int cop,
+ struct vas_rx_win_attr *rxattr),
+
+ TP_ARGS(tsk, vasid, cop, rxattr),
+
+ TP_STRUCT__entry(
+ __field(struct task_struct *, tsk)
+ __field(int, pid)
+ __field(int, cop)
+ __field(int, vasid)
+ __field(struct vas_rx_win_attr *, rxattr)
+ __field(int, lnotify_lpid)
+ __field(int, lnotify_pid)
+ __field(int, lnotify_tid)
+ ),
+
+ TP_fast_assign(
+ __entry->pid = tsk->pid;
+ __entry->vasid = vasid;
+ __entry->cop = cop;
+ __entry->lnotify_lpid = rxattr->lnotify_lpid;
+ __entry->lnotify_pid = rxattr->lnotify_pid;
+ __entry->lnotify_tid = rxattr->lnotify_tid;
+ ),
+
+ TP_printk("pid=%d, vasid=%d, cop=%d, lpid=%d, pid=%d, tid=%d",
+ __entry->pid, __entry->vasid, __entry->cop,
+ __entry->lnotify_lpid, __entry->lnotify_pid,
+ __entry->lnotify_tid)
+);
+
+TRACE_EVENT( vas_tx_win_open,
+
+ TP_PROTO(struct task_struct *tsk,
+ int vasid,
+ int cop,
+ struct vas_tx_win_attr *txattr),
+
+ TP_ARGS(tsk, vasid, cop, txattr),
+
+ TP_STRUCT__entry(
+ __field(struct task_struct *, tsk)
+ __field(int, pid)
+ __field(int, cop)
+ __field(int, vasid)
+ __field(struct vas_tx_win_attr *, txattr)
+ __field(int, lpid)
+ __field(int, pidr)
+ ),
+
+ TP_fast_assign(
+ __entry->pid = tsk->pid;
+ __entry->vasid = vasid;
+ __entry->cop = cop;
+ __entry->lpid = txattr->lpid;
+ __entry->pidr = txattr->pidr;
+ ),
+
+ TP_printk("pid=%d, vasid=%d, cop=%d, lpid=%d, pidr=%d",
+ __entry->pid, __entry->vasid, __entry->cop,
+ __entry->lpid, __entry->pidr)
+);
+
+TRACE_EVENT( vas_paste_crb,
+
+ TP_PROTO(struct task_struct *tsk,
+ struct vas_window *win),
+
+ TP_ARGS(tsk, win),
+
+ TP_STRUCT__entry(
+ __field(struct task_struct *, tsk)
+ __field(struct vas_window *, win)
+ __field(int, pid)
+ __field(int, vasid)
+ __field(int, winid)
+ __field(unsigned long, paste_kaddr)
+ ),
+
+ TP_fast_assign(
+ __entry->pid = tsk->pid;
+ __entry->vasid = win->vinst->vas_id;
+ __entry->winid = win->winid;
+ __entry->paste_kaddr = (unsigned long)win->paste_kaddr
+ ),
+
+ TP_printk("pid=%d, vasid=%d, winid=%d, paste_kaddr=0x%016lx\n",
+ __entry->pid, __entry->vasid, __entry->winid,
+ __entry->paste_kaddr)
+);
+
+#endif /* _VAS_TRACE_H */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH ../../arch/powerpc/platforms/powernv
+#define TRACE_INCLUDE_FILE vas-trace
+#include <trace/define_trace.h>
diff --git a/arch/powerpc/platforms/powernv/vas-window.c
b/arch/powerpc/platforms/powernv/vas-window.c
index 2b3eb01..6b2de9e 100644
--- a/arch/powerpc/platforms/powernv/vas-window.c
+++ b/arch/powerpc/platforms/powernv/vas-window.c
@@ -21,6 +21,9 @@
#include "vas.h"
#include "copy-paste.h"
+#define CREATE_TRACE_POINTS
+#include "vas-trace.h"
+
/*
* Compute the paste address region for the window @window using the
* ->paste_base_addr and ->paste_win_id_shift we got from device tree.
@@ -880,6 +883,8 @@ struct vas_window *vas_rx_win_open(int vasid, enum
vas_cop_type cop,
struct vas_winctx winctx;
struct vas_instance *vinst;
+ trace_vas_rx_win_open(current, vasid, cop, rxattr);
+
if (!rx_win_args_valid(cop, rxattr))
return ERR_PTR(-EINVAL);
@@ -1008,6 +1013,8 @@ struct vas_window *vas_tx_win_open(int vasid, enum
vas_cop_type cop,
struct vas_winctx winctx;
struct vas_instance *vinst;
+ trace_vas_tx_win_open(current, vasid, cop, attr);
+
if (!tx_win_args_valid(cop, attr))
return ERR_PTR(-EINVAL);
@@ -1100,6 +1107,8 @@ int vas_paste_crb(struct vas_window *txwin, int offset,
bool re)
void *addr;
uint64_t val;
+ trace_vas_paste_crb(current, txwin);
+
/*
* Only NX windows are supported for now and hardware assumes
* report-enable flag is set for NX windows. Ensure software
--
2.7.4
