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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /tools/lib/traceevent/kbuffer.h
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/lib/traceevent/kbuffer.h')
-rw-r--r--tools/lib/traceevent/kbuffer.h68
1 files changed, 68 insertions, 0 deletions
diff --git a/tools/lib/traceevent/kbuffer.h b/tools/lib/traceevent/kbuffer.h
new file mode 100644
index 000000000..a2b522093
--- /dev/null
+++ b/tools/lib/traceevent/kbuffer.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+/*
+ * Copyright (C) 2012 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
+ *
+ */
+#ifndef _KBUFFER_H
+#define _KBUFFER_H
+
+#ifndef TS_SHIFT
+#define TS_SHIFT 27
+#endif
+
+enum kbuffer_endian {
+ KBUFFER_ENDIAN_BIG,
+ KBUFFER_ENDIAN_LITTLE,
+};
+
+enum kbuffer_long_size {
+ KBUFFER_LSIZE_4,
+ KBUFFER_LSIZE_8,
+};
+
+enum {
+ KBUFFER_TYPE_PADDING = 29,
+ KBUFFER_TYPE_TIME_EXTEND = 30,
+ KBUFFER_TYPE_TIME_STAMP = 31,
+};
+
+struct kbuffer;
+
+struct kbuffer *kbuffer_alloc(enum kbuffer_long_size size, enum kbuffer_endian endian);
+void kbuffer_free(struct kbuffer *kbuf);
+int kbuffer_load_subbuffer(struct kbuffer *kbuf, void *subbuffer);
+void *kbuffer_read_event(struct kbuffer *kbuf, unsigned long long *ts);
+void *kbuffer_next_event(struct kbuffer *kbuf, unsigned long long *ts);
+unsigned long long kbuffer_timestamp(struct kbuffer *kbuf);
+unsigned long long kbuffer_subbuf_timestamp(struct kbuffer *kbuf, void *subbuf);
+unsigned int kbuffer_ptr_delta(struct kbuffer *kbuf, void *ptr);
+
+void *kbuffer_translate_data(int swap, void *data, unsigned int *size);
+
+void *kbuffer_read_at_offset(struct kbuffer *kbuf, int offset, unsigned long long *ts);
+
+int kbuffer_curr_index(struct kbuffer *kbuf);
+
+int kbuffer_curr_offset(struct kbuffer *kbuf);
+int kbuffer_curr_size(struct kbuffer *kbuf);
+int kbuffer_event_size(struct kbuffer *kbuf);
+int kbuffer_missed_events(struct kbuffer *kbuf);
+int kbuffer_subbuffer_size(struct kbuffer *kbuf);
+
+void kbuffer_set_old_format(struct kbuffer *kbuf);
+int kbuffer_start_of_data(struct kbuffer *kbuf);
+
+/* Debugging */
+
+struct kbuffer_raw_info {
+ int type;
+ int length;
+ unsigned long long delta;
+ void *next;
+};
+
+/* Read raw data */
+struct kbuffer_raw_info *kbuffer_raw_get(struct kbuffer *kbuf, void *subbuf,
+ struct kbuffer_raw_info *info);
+
+#endif /* _K_BUFFER_H */