From: Beau Belgrave <beaub@linux.microsoft.com>
To: rostedt@goodmis.org, mhiramat@kernel.org,
mathieu.desnoyers@efficios.com, dcook@linux.microsoft.com,
alanau@linux.microsoft.com, brauner@kernel.org,
akpm@linux-foundation.org
Cc: linux-trace-devel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v4 01/11] tracing/user_events: Split header into uapi and kernel
Date: Fri, 2 Dec 2022 15:51:28 -0800 [thread overview]
Message-ID: <20221202235138.450-2-beaub@linux.microsoft.com> (raw)
In-Reply-To: <20221202235138.450-1-beaub@linux.microsoft.com>
The UAPI parts need to be split out from the kernel parts of user_events
now that other parts of the kernel will reference it. Do so by moving
the existing include/linux/user_events.h into
include/uapi/linux/user_events.h.
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
---
include/linux/user_events.h | 52 +++++---------------------------
include/uapi/linux/user_events.h | 48 +++++++++++++++++++++++++++++
kernel/trace/trace_events_user.c | 5 ---
3 files changed, 56 insertions(+), 49 deletions(-)
create mode 100644 include/uapi/linux/user_events.h
diff --git a/include/linux/user_events.h b/include/linux/user_events.h
index 592a3fbed98e..036b360f3d97 100644
--- a/include/linux/user_events.h
+++ b/include/linux/user_events.h
@@ -1,54 +1,18 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
- * Copyright (c) 2021, Microsoft Corporation.
+ * Copyright (c) 2022, Microsoft Corporation.
*
* Authors:
* Beau Belgrave <beaub@linux.microsoft.com>
*/
-#ifndef _UAPI_LINUX_USER_EVENTS_H
-#define _UAPI_LINUX_USER_EVENTS_H
-#include <linux/types.h>
-#include <linux/ioctl.h>
+#ifndef _LINUX_USER_EVENTS_H
+#define _LINUX_USER_EVENTS_H
-#ifdef __KERNEL__
-#include <linux/uio.h>
+#include <uapi/linux/user_events.h>
+
+#ifdef CONFIG_USER_EVENTS
#else
-#include <sys/uio.h>
#endif
-#define USER_EVENTS_SYSTEM "user_events"
-#define USER_EVENTS_PREFIX "u:"
-
-/* Create dynamic location entry within a 32-bit value */
-#define DYN_LOC(offset, size) ((size) << 16 | (offset))
-
-/*
- * Describes an event registration and stores the results of the registration.
- * This structure is passed to the DIAG_IOCSREG ioctl, callers at a minimum
- * must set the size and name_args before invocation.
- */
-struct user_reg {
-
- /* Input: Size of the user_reg structure being used */
- __u32 size;
-
- /* Input: Pointer to string with event name, description and flags */
- __u64 name_args;
-
- /* Output: Bitwise index of the event within the status page */
- __u32 status_bit;
-
- /* Output: Index of the event to use when writing data */
- __u32 write_index;
-} __attribute__((__packed__));
-
-#define DIAG_IOC_MAGIC '*'
-
-/* Requests to register a user_event */
-#define DIAG_IOCSREG _IOWR(DIAG_IOC_MAGIC, 0, struct user_reg*)
-
-/* Requests to delete a user_event */
-#define DIAG_IOCSDEL _IOW(DIAG_IOC_MAGIC, 1, char*)
-
-#endif /* _UAPI_LINUX_USER_EVENTS_H */
+#endif /* _LINUX_USER_EVENTS_H */
diff --git a/include/uapi/linux/user_events.h b/include/uapi/linux/user_events.h
new file mode 100644
index 000000000000..7700759a7cd9
--- /dev/null
+++ b/include/uapi/linux/user_events.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright (c) 2021-2022, Microsoft Corporation.
+ *
+ * Authors:
+ * Beau Belgrave <beaub@linux.microsoft.com>
+ */
+#ifndef _UAPI_LINUX_USER_EVENTS_H
+#define _UAPI_LINUX_USER_EVENTS_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+#define USER_EVENTS_SYSTEM "user_events"
+#define USER_EVENTS_PREFIX "u:"
+
+/* Create dynamic location entry within a 32-bit value */
+#define DYN_LOC(offset, size) ((size) << 16 | (offset))
+
+/*
+ * Describes an event registration and stores the results of the registration.
+ * This structure is passed to the DIAG_IOCSREG ioctl, callers at a minimum
+ * must set the size and name_args before invocation.
+ */
+struct user_reg {
+
+ /* Input: Size of the user_reg structure being used */
+ __u32 size;
+
+ /* Input: Pointer to string with event name, description and flags */
+ __u64 name_args;
+
+ /* Output: Bitwise index of the event within the status page */
+ __u32 status_bit;
+
+ /* Output: Index of the event to use when writing data */
+ __u32 write_index;
+} __attribute__((__packed__));
+
+#define DIAG_IOC_MAGIC '*'
+
+/* Requests to register a user_event */
+#define DIAG_IOCSREG _IOWR(DIAG_IOC_MAGIC, 0, struct user_reg*)
+
+/* Requests to delete a user_event */
+#define DIAG_IOCSDEL _IOW(DIAG_IOC_MAGIC, 1, char*)
+
+#endif /* _UAPI_LINUX_USER_EVENTS_H */
diff --git a/kernel/trace/trace_events_user.c b/kernel/trace/trace_events_user.c
index ae78c2d53c8a..890357b48c37 100644
--- a/kernel/trace/trace_events_user.c
+++ b/kernel/trace/trace_events_user.c
@@ -19,12 +19,7 @@
#include <linux/tracefs.h>
#include <linux/types.h>
#include <linux/uaccess.h>
-/* Reminder to move to uapi when everything works */
-#ifdef CONFIG_COMPILE_TEST
#include <linux/user_events.h>
-#else
-#include <uapi/linux/user_events.h>
-#endif
#include "trace.h"
#include "trace_dynevent.h"
--
2.25.1
next prev parent reply other threads:[~2022-12-02 23:51 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-02 23:51 [PATCH v4 00/11] tracing/user_events: Remote write ABI Beau Belgrave
2022-12-02 23:51 ` Beau Belgrave [this message]
2022-12-02 23:51 ` [PATCH v4 02/11] tracing/user_events: Track fork/exec/exit for mm lifetime Beau Belgrave
2022-12-02 23:51 ` [PATCH v4 03/11] tracing/user_events: Use remote writes for event enablement Beau Belgrave
2022-12-02 23:51 ` [PATCH v4 04/11] tracing/user_events: Fixup enable faults asyncly Beau Belgrave
2022-12-02 23:51 ` [PATCH v4 05/11] tracing/user_events: Add ioctl for disabling addresses Beau Belgrave
2022-12-02 23:51 ` [PATCH v4 06/11] tracing/user_events: Update self-tests to write ABI Beau Belgrave
2022-12-02 23:51 ` [PATCH v4 07/11] tracing/user_events: Add ABI self-test Beau Belgrave
2022-12-02 23:51 ` [PATCH v4 08/11] tracing/user_events: Use write ABI in example Beau Belgrave
2022-12-02 23:51 ` [PATCH v4 09/11] tracing/user_events: Update documentation for ABI Beau Belgrave
2022-12-02 23:51 ` [PATCH v4 10/11] tracing/user_events: Charge event allocs to cgroups Beau Belgrave
2022-12-02 23:51 ` [PATCH v4 11/11] tracing/user_events: Limit global user_event count Beau Belgrave
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