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| author | Markus Metzger <markus.t.metzger@intel.com> | 2008-01-30 13:31:20 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:31:20 +0100 |
| commit | a95d67f87e1a5f1b4429be3ba3bf7b4051657908 (patch) | |
| tree | 4a67994b901c5dfbf3c2ee752efd53dbce938c36 /include/asm-x86/ds.h | |
| parent | e4811f2568c55e595a7bf15a3b9aba863b31fb94 (diff) | |
| download | lwn-a95d67f87e1a5f1b4429be3ba3bf7b4051657908.tar.gz lwn-a95d67f87e1a5f1b4429be3ba3bf7b4051657908.zip | |
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>
Diffstat (limited to 'include/asm-x86/ds.h')
| -rw-r--r-- | include/asm-x86/ds.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/asm-x86/ds.h b/include/asm-x86/ds.h index c9e15381dc7f..b84040abee68 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); |