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x86, bts: provide in-kernel branch-trace interface

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Impact: cleanup

Move the BTS bits from ptrace.c into ds.c.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Markus Metzger
2008-12-11 13:49:59 +01:00
committed by Ingo Molnar
parent b0884e25fe
commit c2724775ce
10 changed files with 909 additions and 969 deletions
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36
arch/x86/include/asm/ptrace.h
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@@ -6,7 +6,6 @@
#include <asm/processor-flags.h>
#ifdef __KERNEL__
#include <asm/ds.h> /* the DS BTS struct is used for ptrace too */
#include <asm/segment.h>
#endif
@@ -128,34 +127,6 @@ struct pt_regs {
#endif /* !__i386__ */
#ifdef CONFIG_X86_PTRACE_BTS
/* a branch trace record entry
*
* In order to unify the interface between various processor versions,
* we use the below data structure for all processors.
*/
enum bts_qualifier {
BTS_INVALID = 0,
BTS_BRANCH,
BTS_TASK_ARRIVES,
BTS_TASK_DEPARTS
};
struct bts_struct {
__u64 qualifier;
union {
/* BTS_BRANCH */
struct {
__u64 from_ip;
__u64 to_ip;
} lbr;
/* BTS_TASK_ARRIVES or
BTS_TASK_DEPARTS */
__u64 jiffies;
} variant;
};
#endif /* CONFIG_X86_PTRACE_BTS */
#ifdef __KERNEL__
#include <linux/init.h>
@@ -163,13 +134,6 @@ struct bts_struct {
struct cpuinfo_x86;
struct task_struct;
#ifdef CONFIG_X86_PTRACE_BTS
extern void __cpuinit ptrace_bts_init_intel(struct cpuinfo_x86 *);
extern void ptrace_bts_take_timestamp(struct task_struct *, enum bts_qualifier);
#else
#define ptrace_bts_init_intel(config) do {} while (0)
#endif /* CONFIG_X86_PTRACE_BTS */
extern unsigned long profile_pc(struct pt_regs *regs);
extern unsigned long