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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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13
arch/x86/include/asm/processor.h
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@@ -752,6 +752,19 @@ extern void switch_to_new_gdt(void);
extern void cpu_init(void);
extern void init_gdt(int cpu);
static inline unsigned long get_debugctlmsr(void)
{
unsigned long debugctlmsr = 0;
#ifndef CONFIG_X86_DEBUGCTLMSR
if (boot_cpu_data.x86 < 6)
return 0;
#endif
rdmsrl(MSR_IA32_DEBUGCTLMSR, debugctlmsr);
return debugctlmsr;
}
static inline void update_debugctlmsr(unsigned long debugctlmsr)
{
#ifndef CONFIG_X86_DEBUGCTLMSR