Messages in this thread Patch in this message | | | Date | Wed, 6 Jun 2012 09:16:10 -0700 | From | tip-bot for Andi Kleen <> | Subject | [tip:perf/core] x86: Add rdpmcl() |
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Commit-ID: 1ff4d58a192aea7f245981e2579765f961f6eb9c Gitweb: http://git.kernel.org/tip/1ff4d58a192aea7f245981e2579765f961f6eb9c Author: Andi Kleen <ak@linux.intel.com> AuthorDate: Tue, 5 Jun 2012 17:56:50 -0700 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Wed, 6 Jun 2012 17:23:27 +0200
x86: Add rdpmcl()
Add a version of rdpmc() that directly reads into a u64
Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1338944211-28275-4-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/include/asm/msr.h | 2 ++ arch/x86/include/asm/paravirt.h | 2 ++ 2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h index 084ef95..e489c14 100644 --- a/arch/x86/include/asm/msr.h +++ b/arch/x86/include/asm/msr.h @@ -237,6 +237,8 @@ do { \ (high) = (u32)(_l >> 32); \ } while (0) +#define rdpmcl(counter, val) ((val) = native_read_pmc(counter)) + #define rdtscp(low, high, aux) \ do { \ unsigned long long _val = native_read_tscp(&(aux)); \ diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index 6cbbabf..14ce05d 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -252,6 +252,8 @@ do { \ high = _l >> 32; \ } while (0) +#define rdpmcl(counter, val) ((val) = paravirt_read_pmc(counter)) + static inline unsigned long long paravirt_rdtscp(unsigned int *aux) { return PVOP_CALL1(u64, pv_cpu_ops.read_tscp, aux);
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