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author | Markus Metzger <markus.t.metzger@intel.com> | 2008-01-30 12:31:09 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 12:31:09 (GMT) |
commit | eee3af4a2c83a97fff107ddc445d9df6fded9ce4 (patch) | |
tree | a7e9179b82b4df9e4cf6e810c54309324589395b /include/asm-x86/ptrace-abi.h | |
parent | 7796931f542518092d1fd2fb7cf1f1d96e0cd4b5 (diff) | |
download | linux-fsl-qoriq-eee3af4a2c83a97fff107ddc445d9df6fded9ce4.tar.xz |
x86, ptrace: support for branch trace store(BTS)
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Changes to the last version:
- split implementation into two layers: ds/bts and ptrace
- renamed TIF's
- save/restore ds save area msr in __switch_to_xtra()
- make block-stepping only look at BTF bit
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/ptrace-abi.h')
-rw-r--r-- | include/asm-x86/ptrace-abi.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/asm-x86/ptrace-abi.h b/include/asm-x86/ptrace-abi.h index adce6b5..6fadc52 100644 --- a/include/asm-x86/ptrace-abi.h +++ b/include/asm-x86/ptrace-abi.h @@ -80,4 +80,56 @@ #define PTRACE_SINGLEBLOCK 33 /* resume execution until next branch */ +/* Return maximal BTS buffer size in number of records, + if successuf; -1, otherwise. + EOPNOTSUPP...processor does not support bts tracing */ +#define PTRACE_BTS_MAX_BUFFER_SIZE 40 + +/* Allocate new bts buffer (free old one, if exists) of size DATA bts records; + parameter ADDR is ignored. + Return 0, if successful; -1, otherwise. + EOPNOTSUPP...processor does not support bts tracing + EINVAL.......invalid size in records + ENOMEM.......out of memory */ +#define PTRACE_BTS_ALLOCATE_BUFFER 41 + +/* Return the size of the bts buffer in number of bts records, + if successful; -1, otherwise. + EOPNOTSUPP...processor does not support bts tracing + ENXIO........no buffer allocated */ +#define PTRACE_BTS_GET_BUFFER_SIZE 42 + +/* Return the index of the next bts record to be written, + if successful; -1, otherwise. + EOPNOTSUPP...processor does not support bts tracing + ENXIO........no buffer allocated + After the first warp-around, this is the start of the circular bts buffer. */ +#define PTRACE_BTS_GET_INDEX 43 + +/* Read the DATA'th bts record into a ptrace_bts_record buffer provided in ADDR. + Return 0, if successful; -1, otherwise + EOPNOTSUPP...processor does not support bts tracing + ENXIO........no buffer allocated + EINVAL.......invalid index */ +#define PTRACE_BTS_READ_RECORD 44 + +/* Configure last branch trace; the configuration is given as a bit-mask of + PTRACE_BTS_O_* options in DATA; parameter ADDR is ignored. + Return 0, if successful; -1, otherwise + EOPNOTSUPP...processor does not support bts tracing + ENXIO........no buffer allocated */ +#define PTRACE_BTS_CONFIG 45 + +/* Return the configuration as bit-mask of PTRACE_BTS_O_* options + if successful; -1, otherwise. + EOPNOTSUPP...processor does not support bts tracing + ENXIO........no buffer allocated */ +#define PTRACE_BTS_STATUS 46 + +/* Trace configuration options */ +/* Collect last branch trace */ +#define PTRACE_BTS_O_TRACE_TASK 0x1 +/* Take timestamps when the task arrives and departs */ +#define PTRACE_BTS_O_TIMESTAMPS 0x2 + #endif |