From: Firoz Khan <firoz.khan@linaro.org>
To: Michal Simek <monstr@monstr.eu>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Philippe Ombredanne <pombredanne@nexb.com>,
Thomas Gleixner <tglx@linutronix.de>,
Kate Stewart <kstewart@linuxfoundation.org>
Cc: y2038@lists.linaro.org, linux-kernel@vger.kernel.org,
linux-arch@vger.kernel.org, arnd@arndb.de,
deepa.kernel@gmail.com, marcin.juszkiewicz@linaro.org,
firoz.khan@linaro.org
Subject: [PATCH 1/3] microblaze: Replace NR_syscalls macro from asm/unistd.h
Date: Thu, 9 Aug 2018 10:57:44 +0530 [thread overview]
Message-ID: <1533792466-4227-2-git-send-email-firoz.khan@linaro.org> (raw)
In-Reply-To: <1533792466-4227-1-git-send-email-firoz.khan@linaro.org>
__NR_syscalls macro holds the number of system call exist in this
architecture. This macro is currently the part of asm/unistd.h file.
We have change the value of __NR_syscalls, if we add or delete a
system call.
One of the patch in this patch series has a script which will
generate a uapi header based on syscall.tbl file. The syscall.tbl
file contains the number of system call information. So we have
two option to update __NR_syscalls value.
1. Update __NR_syscalls in asm/unistd.h manually by counting the
no.of system calls. No need to update __NR_syscalls untill
we either add a new system call or delete an existing system
call.
2. We can keep this feature it above mentioned script, that'll
count the number of syscalls and keep it in a generated file.
In this case we don't need to explicitly update __NR_syscalls
in asm/unistd.h file.
The 2nd option will be the recommended one. For that, I moved the
NR_syscalls macro from asm/unistd.h to uapi/asm/unistd.h. The macro
name also changed form NR_syscalls to __NR_syscalls for making the
name convention same across all architecture. 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@linaro.org>
---
arch/microblaze/include/asm/unistd.h | 2 --
arch/microblaze/include/uapi/asm/unistd.h | 2 ++
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/microblaze/include/asm/unistd.h b/arch/microblaze/include/asm/unistd.h
index a62d094..e19550f 100644
--- a/arch/microblaze/include/asm/unistd.h
+++ b/arch/microblaze/include/asm/unistd.h
@@ -38,6 +38,4 @@
#endif /* __ASSEMBLY__ */
-#define __NR_syscalls 401
-
#endif /* _ASM_MICROBLAZE_UNISTD_H */
diff --git a/arch/microblaze/include/uapi/asm/unistd.h b/arch/microblaze/include/uapi/asm/unistd.h
index 7a9f16a..bde6b38 100644
--- a/arch/microblaze/include/uapi/asm/unistd.h
+++ b/arch/microblaze/include/uapi/asm/unistd.h
@@ -418,4 +418,6 @@
#define __NR_io_pgetevents 399
#define __NR_rseq 400
+#define __NR_syscalls 401
+
#endif /* _UAPI_ASM_MICROBLAZE_UNISTD_H */
--
1.9.1
next prev parent reply other threads:[~2018-08-09 5:27 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-09 5:27 [PATCH 0/3] System call table generation support Firoz Khan
2018-08-09 5:27 ` Firoz Khan
2018-08-09 5:27 ` Firoz Khan [this message]
2018-08-09 5:27 ` [PATCH 1/3] microblaze: Replace NR_syscalls macro from asm/unistd.h Firoz Khan
2018-08-09 6:48 ` Michal Simek
2018-08-09 6:48 ` Michal Simek
2018-09-18 6:37 ` Firoz Khan
2018-09-18 6:37 ` Firoz Khan
2018-10-02 7:07 ` Michal Simek
2018-10-02 7:07 ` Michal Simek
2018-10-03 5:09 ` Firoz Khan
2018-10-03 5:09 ` Firoz Khan
2018-08-09 5:27 ` [PATCH 2/3] microblaze: Added system call table generation support Firoz Khan
2018-08-09 5:27 ` Firoz Khan
2018-08-09 7:05 ` Michal Simek
2018-08-09 7:05 ` Michal Simek
2018-09-18 6:50 ` Firoz Khan
2018-09-18 6:50 ` Firoz Khan
2018-08-09 5:27 ` [PATCH 3/3] microblaze: uapi header and system call table file generation Firoz Khan
2018-08-09 5:27 ` Firoz Khan
2018-08-09 7:12 ` Michal Simek
2018-08-09 7:12 ` Michal Simek
2018-09-18 7:12 ` Firoz Khan
2018-09-18 7:12 ` Firoz Khan
2018-09-24 23:20 ` Arnd Bergmann
2018-09-24 23:20 ` Arnd Bergmann
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