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| author |   Markus Metzger <markus.t.metzger@intel.com> | 2008-01-30 13:31:09 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:31:09 +0100 |
| commit | eee3af4a2c83a97fff107ddc445d9df6fded9ce4 (patch) | |
| tree | a7e9179b82b4df9e4cf6e810c54309324589395b /arch/x86/kernel/setup_64.c | |
| parent | UML: change sigcontext fields to match x86 (diff) | |
| download | linux-dev-eee3af4a2c83a97fff107ddc445d9df6fded9ce4.tar.xz linux-dev-eee3af4a2c83a97fff107ddc445d9df6fded9ce4.zip | |
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 'arch/x86/kernel/setup_64.c')
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index ce4d6b52ce36..f2b131ef844e 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -60,6 +60,7 @@ #include <asm/dmi.h> #include <asm/cacheflush.h> #include <asm/mce.h> +#include <asm/ds.h> /* * Machine setup.. @@ -823,6 +824,10 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c) set_cpu_cap(c, X86_FEATURE_PEBS); } + + if (cpu_has_bts) + ds_init_intel(c); + n = c->extended_cpuid_level; if (n >= 0x80000008) { unsigned eax = cpuid_eax(0x80000008); |