linux-kernel - [PATCH v4 2/4] x86/asm: Replace custom COUNT

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Message-Id: <20230718211147.18647-3-andriy.shevchenko@linux.intel.com>
Date:   Wed, 19 Jul 2023 00:11:45 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        David Gow <davidgow@...gle.com>,
        Daniel Latypov <dlatypov@...gle.com>,
        "Steven Rostedt (Google)" <rostedt@...dmis.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        kunit-dev@...glegroups.com, linux-arm-kernel@...ts.infradead.org,
        linux-pci@...r.kernel.org, linux-trace-kernel@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>,
        Brendan Higgins <brendan.higgins@...ux.dev>,
        Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH v4 2/4] x86/asm: Replace custom COUNT_ARGS() & CONCATENATE() implementations

Replace custom implementation of the macros from args.h.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 arch/x86/include/asm/rmwcc.h | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/arch/x86/include/asm/rmwcc.h b/arch/x86/include/asm/rmwcc.h
index 7fa611216417..4b081e0d3306 100644
--- a/arch/x86/include/asm/rmwcc.h
+++ b/arch/x86/include/asm/rmwcc.h
@@ -2,12 +2,7 @@
 #ifndef _ASM_X86_RMWcc
 #define _ASM_X86_RMWcc
 
-/* This counts to 12. Any more, it will return 13th argument. */
-#define __RMWcc_ARGS(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _n, X...) _n
-#define RMWcc_ARGS(X...) __RMWcc_ARGS(, ##X, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
-
-#define __RMWcc_CONCAT(a, b) a ## b
-#define RMWcc_CONCAT(a, b) __RMWcc_CONCAT(a, b)
+#include <linux/args.h>
 
 #define __CLOBBERS_MEM(clb...)	"memory", ## clb
 
@@ -48,7 +43,7 @@ cc_label:	c = true;						\
 #define GEN_UNARY_RMWcc_3(op, var, cc)					\
 	GEN_UNARY_RMWcc_4(op, var, cc, "%[var]")
 
-#define GEN_UNARY_RMWcc(X...) RMWcc_CONCAT(GEN_UNARY_RMWcc_, RMWcc_ARGS(X))(X)
+#define GEN_UNARY_RMWcc(X...)	CONCATENATE(GEN_UNARY_RMWcc_, COUNT_ARGS(X))(X)
 
 #define GEN_BINARY_RMWcc_6(op, var, cc, vcon, _val, arg0)		\
 	__GEN_RMWcc(op " %[val], " arg0, var, cc,			\
@@ -57,7 +52,7 @@ cc_label:	c = true;						\
 #define GEN_BINARY_RMWcc_5(op, var, cc, vcon, val)			\
 	GEN_BINARY_RMWcc_6(op, var, cc, vcon, val, "%[var]")
 
-#define GEN_BINARY_RMWcc(X...) RMWcc_CONCAT(GEN_BINARY_RMWcc_, RMWcc_ARGS(X))(X)
+#define GEN_BINARY_RMWcc(X...)	CONCATENATE(GEN_BINARY_RMWcc_, COUNT_ARGS(X))(X)
 
 #define GEN_UNARY_SUFFIXED_RMWcc(op, suffix, var, cc, clobbers...)	\
 	__GEN_RMWcc(op " %[var]\n\t" suffix, var, cc,			\
-- 
2.40.0.1.gaa8946217a0b