linux-kernel - [tip:x86/timers] x86/cpu: Introduce INTEL_CPU

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Message-ID: <tip-e2ce67b2b34b6e9d77da2f375dba5b525508f7df@git.kernel.org>
Date:   Tue, 3 Jul 2018 04:13:39 -0700
From:   tip-bot for Andy Shevchenko <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     tglx@...utronix.de, linux-kernel@...r.kernel.org,
        pasha.tatashin@...cle.com, hpa@...or.com, mingo@...nel.org,
        andriy.shevchenko@...ux.intel.com
Subject: [tip:x86/timers] x86/cpu: Introduce INTEL_CPU_FAM*() helper macros

Commit-ID:  e2ce67b2b34b6e9d77da2f375dba5b525508f7df
Gitweb:     https://git.kernel.org/tip/e2ce67b2b34b6e9d77da2f375dba5b525508f7df
Author:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
AuthorDate: Fri, 29 Jun 2018 22:31:08 +0300
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 3 Jul 2018 13:08:20 +0200

x86/cpu: Introduce INTEL_CPU_FAM*() helper macros

These macros are often used by drivers and there exists already a lot of
duplication as ICPU() macro across the drivers.

Provide a generic x86 macro for users.

Note, as Ingo Molnar pointed out this has a hidden issue when a driver
needs to preserve const qualifier. Though, it would be addressed
separately at some point.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: Pavel Tatashin <pasha.tatashin@...cle.com>
Link: https://lkml.kernel.org/r/20180629193113.84425-2-andriy.shevchenko@linux.intel.com

---
 arch/x86/include/asm/intel-family.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/x86/include/asm/intel-family.h b/arch/x86/include/asm/intel-family.h
index cf090e584202..7ed08a7c3398 100644
--- a/arch/x86/include/asm/intel-family.h
+++ b/arch/x86/include/asm/intel-family.h
@@ -76,4 +76,17 @@
 #define INTEL_FAM6_XEON_PHI_KNL		0x57 /* Knights Landing */
 #define INTEL_FAM6_XEON_PHI_KNM		0x85 /* Knights Mill */
 
+/* Useful macros */
+#define INTEL_CPU_FAM_ANY(_family, _model, _driver_data)	\
+{								\
+	.vendor		= X86_VENDOR_INTEL,			\
+	.family		= _family,				\
+	.model		= _model,				\
+	.feature	= X86_FEATURE_ANY,			\
+	.driver_data	= (kernel_ulong_t)&_driver_data		\
+}
+
+#define INTEL_CPU_FAM6(_model, _driver_data)			\
+	INTEL_CPU_FAM_ANY(6, INTEL_FAM6_##_model, _driver_data)
+
 #endif /* _ASM_X86_INTEL_FAMILY_H */