From a95d67f87e1a5f1b4429be3ba3bf7b4051657908 Mon Sep 17 00:00:00 2001
From: Markus Metzger <markus.t.metzger@intel.com>
Date: Wed, 30 Jan 2008 13:31:20 +0100
Subject: x86, ptrace: new ptrace BTS API
Here's the new ptrace BTS API that supports two different overflow handling mechanisms (wrap-around and buffer-full-signal) to support two different use cases (debugging and profiling).
It further combines buffer allocation and configuration.
Opens:
- memory rlimit
- overflow signal
What would be the right signal to use?
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/asm-x86/ds.h | 7 +++++++
1 file changed, 7 insertions(+)
(limited to 'include/asm-x86/ds.h')
diff --git a/include/asm-x86/ds.h b/include/asm-x86/ds.h
index c9e15381dc7..b84040abee6 100644
--- a/include/asm-x86/ds.h
+++ b/include/asm-x86/ds.h
@@ -52,11 +52,18 @@ struct bts_struct {
} variant;
};
+/* Overflow handling mechanisms */
+#define DS_O_SIGNAL 1 /* send overflow signal */
+#define DS_O_WRAP 2 /* wrap around */
extern int ds_allocate(void **, size_t);
extern int ds_free(void **);
extern int ds_get_bts_size(void *);
+extern int ds_get_bts_end(void *);
extern int ds_get_bts_index(void *);
+extern int ds_set_overflow(void *, int);
+extern int ds_get_overflow(void *);
+extern int ds_clear(void *);
extern int ds_read_bts(void *, size_t, struct bts_struct *);
extern int ds_write_bts(void *, const struct bts_struct *);
extern unsigned long ds_debugctl_mask(void);
--
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