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| author | Markus Metzger <markus.t.metzger@intel.com> | 2008-01-30 15:31:09 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 15:31:09 +0300 |
| commit | eee3af4a2c83a97fff107ddc445d9df6fded9ce4 (patch) | |
| tree | a7e9179b82b4df9e4cf6e810c54309324589395b /include/asm-x86/thread_info_32.h | |
| parent | 7796931f542518092d1fd2fb7cf1f1d96e0cd4b5 (diff) | |
| download | linux-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/thread_info_32.h')
| -rw-r--r-- | include/asm-x86/thread_info_32.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/include/asm-x86/thread_info_32.h b/include/asm-x86/thread_info_32.h index 306fc80800e1..5bd508260ffb 100644 --- a/include/asm-x86/thread_info_32.h +++ b/include/asm-x86/thread_info_32.h @@ -140,6 +140,8 @@ static inline struct thread_info *current_thread_info(void) #define TIF_NOTSC 20 /* TSC is not accessible in userland */ #define TIF_FORCED_TF 21 /* true if TF in eflags artificially */ #define TIF_DEBUGCTLMSR 22 /* uses thread_struct.debugctlmsr */ +#define TIF_DS_AREA_MSR 23 /* uses thread_struct.ds_area_msr */ +#define TIF_BTS_TRACE_TS 24 /* record scheduling event timestamps */ #define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) #define _TIF_SIGPENDING (1<<TIF_SIGPENDING) @@ -157,6 +159,8 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_NOTSC (1<<TIF_NOTSC) #define _TIF_FORCED_TF (1<<TIF_FORCED_TF) #define _TIF_DEBUGCTLMSR (1<<TIF_DEBUGCTLMSR) +#define _TIF_DS_AREA_MSR (1<<TIF_DS_AREA_MSR) +#define _TIF_BTS_TRACE_TS (1<<TIF_BTS_TRACE_TS) /* work to do on interrupt/exception return */ #define _TIF_WORK_MASK \ @@ -166,8 +170,12 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_ALLWORK_MASK (0x0000FFFF & ~_TIF_SECCOMP) /* flags to check in __switch_to() */ -#define _TIF_WORK_CTXSW_NEXT (_TIF_IO_BITMAP | _TIF_NOTSC | _TIF_DEBUG | _TIF_DEBUGCTLMSR) -#define _TIF_WORK_CTXSW_PREV (_TIF_IO_BITMAP | _TIF_NOTSC | _TIF_DEBUGCTLMSR) +#define _TIF_WORK_CTXSW \ + (_TIF_IO_BITMAP | _TIF_NOTSC | _TIF_DEBUGCTLMSR | \ + _TIF_DS_AREA_MSR | _TIF_BTS_TRACE_TS) +#define _TIF_WORK_CTXSW_PREV _TIF_WORK_CTXSW +#define _TIF_WORK_CTXSW_NEXT (_TIF_WORK_CTXSW | _TIF_DEBUG) + /* * Thread-synchronous status. |