Messages in this thread Patch in this message | | | Date | Thu, 7 May 2009 09:22:42 GMT | From | tip-bot for Markus Metzger <> | Subject | [tip:tracing/core] x86, debugctlmsr: add _on_cpu variants to debugctlmsr functions |
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Commit-ID: 35bb7600c17762bb129588c1877d2717fe325289 Gitweb: http://git.kernel.org/tip/35bb7600c17762bb129588c1877d2717fe325289 Author: Markus Metzger <markus.t.metzger@intel.com> AuthorDate: Fri, 3 Apr 2009 16:43:39 +0200 Committer: Ingo Molnar <mingo@elte.hu> CommitDate: Tue, 7 Apr 2009 13:36:19 +0200
x86, debugctlmsr: add _on_cpu variants to debugctlmsr functions
Add functions to get and set the debugctlmsr on different cpus.
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Cc: roland@redhat.com Cc: eranian@googlemail.com Cc: oleg@redhat.com Cc: juan.villacis@intel.com Cc: ak@linux.jf.intel.com LKML-Reference: <20090403144554.738772000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
--- arch/x86/include/asm/processor.h | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 2483807..1efeb49 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -785,6 +785,21 @@ static inline unsigned long get_debugctlmsr(void) return debugctlmsr; } +static inline unsigned long get_debugctlmsr_on_cpu(int cpu) +{ + u64 debugctlmsr = 0; + u32 val1, val2; + +#ifndef CONFIG_X86_DEBUGCTLMSR + if (boot_cpu_data.x86 < 6) + return 0; +#endif + rdmsr_on_cpu(cpu, MSR_IA32_DEBUGCTLMSR, &val1, &val2); + debugctlmsr = val1 | ((u64)val2 << 32); + + return debugctlmsr; +} + static inline void update_debugctlmsr(unsigned long debugctlmsr) { #ifndef CONFIG_X86_DEBUGCTLMSR @@ -794,6 +809,18 @@ static inline void update_debugctlmsr(unsigned long debugctlmsr) wrmsrl(MSR_IA32_DEBUGCTLMSR, debugctlmsr); } +static inline void update_debugctlmsr_on_cpu(int cpu, + unsigned long debugctlmsr) +{ +#ifndef CONFIG_X86_DEBUGCTLMSR + if (boot_cpu_data.x86 < 6) + return; +#endif + wrmsr_on_cpu(cpu, MSR_IA32_DEBUGCTLMSR, + (u32)((u64)debugctlmsr), + (u32)((u64)debugctlmsr >> 32)); +} + /* * from system description table in BIOS. Mostly for MCA use, but * others may find it useful:
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