linux-kernel - [PATCH 4/6] alpha: Replace NR_SYSCALLS macro from asm/unistd.h

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Message-Id: <1531736638-15294-5-git-send-email-firoz.khan@linaro.org>
Date:   Mon, 16 Jul 2018 15:53:56 +0530
From:   Firoz Khan <firoz.khan@...aro.org>
To:     linux-alpha@...r.kernel.org, rth@...ddle.net,
        ink@...assic.park.msu.ru, mattst88@...il.com
Cc:     y2038@...ts.linaro.org, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org, arnd@...db.de, deepa.kernel@...il.com,
        Firoz Khan <firoz.khan@...aro.org>
Subject: [PATCH 4/6] alpha: Replace NR_SYSCALLS macro from asm/unistd.h

Replace NR_SYSCALLS from asm/unistd.h and keep equivalent macro
__NR_syscalls in uapi/asm/unistd.h and this will make a unified
implementation across all the architecture and we can use a system
call generation script to generate __NR_syscalls.

While __NR_syscalls isn't strictly part of the uapi, having it as
part of the generated header to simplifies the implementation.

Signed-off-by: Firoz Khan <firoz.khan@...aro.org>
---
 arch/alpha/include/asm/unistd.h      | 2 --
 arch/alpha/include/uapi/asm/unistd.h | 2 ++
 arch/alpha/kernel/entry.S            | 4 ++--
 arch/alpha/kernel/systbls.S          | 2 +-
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/alpha/include/asm/unistd.h b/arch/alpha/include/asm/unistd.h
index 1d19087..92c3f2e 100644
--- a/arch/alpha/include/asm/unistd.h
+++ b/arch/alpha/include/asm/unistd.h
@@ -4,8 +4,6 @@
 
 #include <uapi/asm/unistd.h>
 
-#define NR_SYSCALLS			523
-
 #define __ARCH_WANT_OLD_READDIR
 #define __ARCH_WANT_STAT64
 #define __ARCH_WANT_SYS_GETHOSTNAME
diff --git a/arch/alpha/include/uapi/asm/unistd.h b/arch/alpha/include/uapi/asm/unistd.h
index 3bb6ac1..5d4b51e 100644
--- a/arch/alpha/include/uapi/asm/unistd.h
+++ b/arch/alpha/include/uapi/asm/unistd.h
@@ -481,4 +481,6 @@
 #define __NR_pwritev2			521
 #define __NR_statx			522
 
+#define __NR_syscalls                   523
+
 #endif /* _UAPI_ALPHA_UNISTD_H */
diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index c64806a..8f0d706 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -454,7 +454,7 @@ entSys:
 	SAVE_ALL
 	lda	$8, 0x3fff
 	bic	$sp, $8, $8
-	lda	$4, NR_SYSCALLS($31)
+	lda	$4, __NR_syscalls($31)
 	stq	$16, SP_OFF+24($sp)
 	lda	$5, sys_call_table
 	lda	$27, sys_ni_syscall
@@ -585,7 +585,7 @@ strace:
 	ldq	$21, 88($sp)
 
 	/* get the system call pointer.. */
-	lda	$1, NR_SYSCALLS($31)
+	lda	$1, __NR_syscalls($31)
 	lda	$2, sys_call_table
 	lda	$27, alpha_ni_syscall
 	cmpult	$0, $1, $1
diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
index 7ef6925..de79de3 100644
--- a/arch/alpha/kernel/systbls.S
+++ b/arch/alpha/kernel/systbls.S
@@ -544,6 +544,6 @@ sys_call_table:
 	.type sys_call_table, @object
 
 /* Remember to update everything, kids.  */
-.ifne (. - sys_call_table) - (NR_SYSCALLS * 8)
+.ifne (. - sys_call_table) - (__NR_syscalls * 8)
 .err
 .endif
-- 
2.7.4