[DTrace-devel] [PATCH] Pass dctx as a const struct to BPF functions.

[Kris Van Hees]

Signed-off-by: Kris Van Hees <kris.van.hees at oracle.com>
---
 bpf/get_bvar.c    | 4 ++--
 bpf/probe_error.c | 6 +++---
 bpf/probe_error.h | 4 ++--
 bpf/speculation.c | 4 ++--
 4 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/bpf/get_bvar.c b/bpf/get_bvar.c
index 7c98e166..67346014 100644
--- a/bpf/get_bvar.c
+++ b/bpf/get_bvar.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, 2022, Oracle and/or its affiliates. All rights reserved.
  */
 #include <linux/bpf.h>
 #include <stddef.h>
@@ -33,7 +33,7 @@ extern uint64_t BOOTTM;
 		-1; \
 	})
 
-noinline uint64_t dt_get_bvar(dt_dctx_t *dctx, uint32_t id)
+noinline uint64_t dt_get_bvar(const dt_dctx_t *dctx, uint32_t id)
 {
 	dt_mstate_t	*mst = dctx->mst;
 
diff --git a/bpf/probe_error.c b/bpf/probe_error.c
index 138ce79c..5f54533d 100644
--- a/bpf/probe_error.c
+++ b/bpf/probe_error.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2022, Oracle and/or its affiliates. All rights reserved.
  */
 #include <linux/bpf.h>
 #include <stdint.h>
@@ -11,7 +11,7 @@
 # define noinline	__attribute__((noinline))
 #endif
 
-extern int64_t dt_error(dt_dctx_t *dctx);
+extern int64_t dt_error(const dt_dctx_t *dctx);
 
 /*
  * DTrace ERROR probes provide 6 arguments:
@@ -22,7 +22,7 @@ extern int64_t dt_error(dt_dctx_t *dctx);
  *	arg4 = fault type
  *	arg5 = fault-specific value (usually address being accessed or 0)
  */
-noinline void dt_probe_error(dt_dctx_t *dctx, uint64_t pc, uint64_t fault,
+noinline void dt_probe_error(const dt_dctx_t *dctx, uint64_t pc, uint64_t fault,
 			     uint64_t illval)
 {
 	dt_mstate_t	*mst = dctx->mst;
diff --git a/bpf/probe_error.h b/bpf/probe_error.h
index d9e5e985..3dda932e 100644
--- a/bpf/probe_error.h
+++ b/bpf/probe_error.h
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2022, Oracle and/or its affiliates. All rights reserved.
  */
 #ifndef BPF_PROBE_ERRROR_H
 #define BPF_PROBE_ERRROR_H
@@ -8,7 +8,7 @@
 #include <stdint.h>
 #include <dt_dctx.h>
 
-extern void dt_probe_error(dt_dctx_t *dctx, uint64_t pc, uint64_t fault,
+extern void dt_probe_error(const dt_dctx_t *dctx, uint64_t pc, uint64_t fault,
 			   uint64_t illval);
 
 #endif /* BPF_PROBE_ERRROR_H */
diff --git a/bpf/speculation.c b/bpf/speculation.c
index a5134988..90433753 100644
--- a/bpf/speculation.c
+++ b/bpf/speculation.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2022, Oracle and/or its affiliates. All rights reserved.
  */
 #include <linux/bpf.h>
 #include <stdint.h>
@@ -111,7 +111,7 @@ dt_speculation_speculate(uint32_t id)
  */
 
 noinline int32_t
-dt_speculation_set_drainable(dt_dctx_t *dctx, uint32_t id)
+dt_speculation_set_drainable(const dt_dctx_t *dctx, uint32_t id)
 {
 	dt_bpf_specs_t *spec;
 
-- 
2.34.1