Drop support for kernels < 3.0 from skb instrumentation

[lttng-modules.git] / lttng-syscalls.c

diff --git a/lttng-syscalls.c b/lttng-syscalls.c
index a3149d0d01caa4260bc2e0442907207f4f4aac4b..bcc06b5cd03759db0334756b3433e806c58e3093 100644 (file)
--- a/lttng-syscalls.c
+++ b/lttng-syscalls.c
@@ -1,23 +1,10 @@
-/*
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
  * lttng-syscalls.c
  *
  * LTTng syscall probes.
  *
  * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include <linux/module.h>
@@ -132,6 +119,9 @@ struct user_msghdr;
        LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(syscall_entry_##_name, PARAMS(_fields))
 #define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name)            \
        LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(syscall_entry_##_template, syscall_entry_##_name)
+/* Enumerations only defined at first inclusion. */
+#define SC_LTTNG_TRACEPOINT_ENUM(_name, _values) \
+       LTTNG_TRACEPOINT_ENUM(_name, PARAMS(_values))
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM syscall_entry_integers
 #define TRACE_INCLUDE_FILE syscalls_integers
@@ -143,6 +133,7 @@ struct user_msghdr;
 #include <instrumentation/syscalls/headers/syscalls_pointers.h>
 #undef TRACE_INCLUDE_FILE
 #undef TRACE_SYSTEM
+#undef SC_LTTNG_TRACEPOINT_ENUM
 #undef SC_LTTNG_TRACEPOINT_EVENT_CODE
 #undef SC_LTTNG_TRACEPOINT_EVENT
 #undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS
@@ -153,6 +144,7 @@ struct user_msghdr;
 
 /* Hijack probe callback for compat system call enter */
 #define TP_PROBE_CB(_template)         &syscall_entry_probe
+#define LTTNG_SC_COMPAT
 #define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _fields) \
        LTTNG_TRACEPOINT_EVENT(compat_syscall_entry_##_name, PARAMS(_proto), PARAMS(_args), \
                PARAMS(_fields))
@@ -164,6 +156,8 @@ struct user_msghdr;
 #define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name)            \
        LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(compat_syscall_entry_##_template, \
                compat_syscall_entry_##_name)
+/* Enumerations only defined at inital inclusion (not here). */
+#define SC_LTTNG_TRACEPOINT_ENUM(_name, _values)
 #define TRACE_SYSTEM compat_syscall_entry_integers
 #define TRACE_INCLUDE_FILE compat_syscalls_integers
 #include <instrumentation/syscalls/headers/compat_syscalls_integers.h>
@@ -174,6 +168,7 @@ struct user_msghdr;
 #include <instrumentation/syscalls/headers/compat_syscalls_pointers.h>
 #undef TRACE_INCLUDE_FILE
 #undef TRACE_SYSTEM
+#undef SC_LTTNG_TRACEPOINT_ENUM
 #undef SC_LTTNG_TRACEPOINT_EVENT_CODE
 #undef SC_LTTNG_TRACEPOINT_EVENT
 #undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS
@@ -181,6 +176,7 @@ struct user_msghdr;
 #undef TP_PROBE_CB
 #undef _TRACE_SYSCALLS_INTEGERS_H
 #undef _TRACE_SYSCALLS_POINTERS_H
+#undef LTTNG_SC_COMPAT
 
 #undef SC_ENTER
 
@@ -208,6 +204,8 @@ struct user_msghdr;
 #define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name)            \
        LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(syscall_exit_##_template,        \
                syscall_exit_##_name)
+/* Enumerations only defined at inital inclusion (not here). */
+#define SC_LTTNG_TRACEPOINT_ENUM(_name, _values)
 #define TRACE_SYSTEM syscall_exit_integers
 #define TRACE_INCLUDE_FILE syscalls_integers
 #include <instrumentation/syscalls/headers/syscalls_integers.h>
@@ -218,6 +216,7 @@ struct user_msghdr;
 #include <instrumentation/syscalls/headers/syscalls_pointers.h>
 #undef TRACE_INCLUDE_FILE
 #undef TRACE_SYSTEM
+#undef SC_LTTNG_TRACEPOINT_ENUM
 #undef SC_LTTNG_TRACEPOINT_EVENT_CODE
 #undef SC_LTTNG_TRACEPOINT_EVENT
 #undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS
@@ -229,6 +228,7 @@ struct user_msghdr;
 
 /* Hijack probe callback for compat system call exit */
 #define TP_PROBE_CB(_template)         &syscall_exit_probe
+#define LTTNG_SC_COMPAT
 #define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _fields) \
        LTTNG_TRACEPOINT_EVENT(compat_syscall_exit_##_name, PARAMS(_proto), PARAMS(_args), \
                PARAMS(_fields))
@@ -240,6 +240,8 @@ struct user_msghdr;
 #define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name)            \
        LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(compat_syscall_exit_##_template, \
                compat_syscall_exit_##_name)
+/* Enumerations only defined at inital inclusion (not here). */
+#define SC_LTTNG_TRACEPOINT_ENUM(_name, _values)
 #define TRACE_SYSTEM compat_syscall_exit_integers
 #define TRACE_INCLUDE_FILE compat_syscalls_integers
 #include <instrumentation/syscalls/headers/compat_syscalls_integers.h>
@@ -250,6 +252,7 @@ struct user_msghdr;
 #include <instrumentation/syscalls/headers/compat_syscalls_pointers.h>
 #undef TRACE_INCLUDE_FILE
 #undef TRACE_SYSTEM
+#undef SC_LTTNG_TRACEPOINT_ENUM
 #undef SC_LTTNG_TRACEPOINT_EVENT_CODE
 #undef SC_LTTNG_TRACEPOINT_EVENT
 #undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS
@@ -257,6 +260,7 @@ struct user_msghdr;
 #undef TP_PROBE_CB
 #undef _TRACE_SYSCALLS_INTEGERS_H
 #undef _TRACE_SYSCALLS_POINTERS_H
+#undef LTTNG_SC_COMPAT
 
 #undef SC_EXIT
 
@@ -1242,7 +1246,7 @@ long lttng_channel_syscall_mask(struct lttng_channel *channel,
        filter = channel->sc_filter;
 
        for (bit = 0; bit < ARRAY_SIZE(sc_table); bit++) {
-               bool state;
+               char state;
 
                if (channel->sc_table) {
                        if (filter)
@@ -1255,7 +1259,7 @@ long lttng_channel_syscall_mask(struct lttng_channel *channel,
                bt_bitfield_write_be(tmp_mask, char, bit, 1, state);
        }
        for (; bit < sc_tables_len; bit++) {
-               bool state;
+               char state;
 
                if (channel->compat_sc_table) {
                        if (filter)