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From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
	clang-built-linux@googlegroups.com, x86@kernel.org
Cc: catalin.marinas@arm.com, will.deacon@arm.com, arnd@arndb.de,
	linux@armlinux.org.uk, paul.burton@mips.com, tglx@linutronix.de,
	luto@kernel.org, mingo@redhat.com, bp@alien8.de,
	sboyd@kernel.org, salyzyn@android.com, pcc@google.com,
	0x7f454c46@gmail.com, ndesaulniers@google.com, avagin@openvz.org
Subject: [PATCH 08/19] linux/jiffies.h: Extract common header for vDSO
Date: Thu, 13 Feb 2020 16:16:03 +0000	[thread overview]
Message-ID: <20200213161614.23246-9-vincenzo.frascino@arm.com> (raw)
In-Reply-To: <20200213161614.23246-1-vincenzo.frascino@arm.com>

The vDSO library should only include the necessary headers required for
a userspace library (UAPI and a minimal set of kernel headers). To make
this possible it is necessary to isolate from the kernel headers the
common parts that are strictly necessary to build the library.

Split jiffies.h into linux and common headers to make the latter suitable
for inclusion in the vDSO library.

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 include/common/jiffies.h | 11 +++++++++++
 include/linux/jiffies.h  |  4 +---
 2 files changed, 12 insertions(+), 3 deletions(-)
 create mode 100644 include/common/jiffies.h

diff --git a/include/common/jiffies.h b/include/common/jiffies.h
new file mode 100644
index 000000000000..ff0207f00550
--- /dev/null
+++ b/include/common/jiffies.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __COMMON_JIFFIES_H
+#define __COMMON_JIFFIES_H
+
+#include <asm/param.h>			/* for HZ */
+#include <common/time64.h>
+
+/* TICK_NSEC is the time between ticks in nsec assuming SHIFTED_HZ */
+#define TICK_NSEC ((NSEC_PER_SEC+HZ/2)/HZ)
+
+#endif /* __COMMON_JIFFIES_H */
diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
index e3279ef24d28..710539d1e39b 100644
--- a/include/linux/jiffies.h
+++ b/include/linux/jiffies.h
@@ -8,6 +8,7 @@
 #include <linux/types.h>
 #include <linux/time.h>
 #include <linux/timex.h>
+#include <common/jiffies.h>
 #include <asm/param.h>			/* for HZ */
 #include <generated/timeconst.h>
 
@@ -59,9 +60,6 @@
 
 extern int register_refined_jiffies(long clock_tick_rate);
 
-/* TICK_NSEC is the time between ticks in nsec assuming SHIFTED_HZ */
-#define TICK_NSEC ((NSEC_PER_SEC+HZ/2)/HZ)
-
 /* TICK_USEC is the time between ticks in usec assuming SHIFTED_HZ */
 #define TICK_USEC ((USEC_PER_SEC + HZ/2) / HZ)
 
-- 
2.25.0


  parent reply	other threads:[~2020-02-13 16:17 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-13 16:15 [PATCH 00/19] Introduce common headers Vincenzo Frascino
2020-02-13 16:15 ` [PATCH 01/19] linux/const.h: Extract common header for vDSO Vincenzo Frascino
2020-02-13 16:15 ` [PATCH 02/19] linux/bits.h: " Vincenzo Frascino
2020-02-13 16:15 ` [PATCH 03/19] linux/limits.h: " Vincenzo Frascino
2020-02-13 16:15 ` [PATCH 04/19] linux/math64.h: " Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 05/19] linux/time.h: " Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 06/19] linux/time32.h: " Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 07/19] linux/time64.h: " Vincenzo Frascino
2020-02-13 16:16 ` Vincenzo Frascino [this message]
2020-02-13 16:16 ` [PATCH 09/19] linux/ktime.h: " Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 10/19] common: Introduce processor.h Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 11/19] linux/elfnote.h: Replace elf.h with UAPI equivalent Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 12/19] arm64: Introduce asm/common/processor.h Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 13/19] arm64: vdso: Include common headers in the vdso library Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 14/19] arm64: vdso32: " Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 15/19] mips: vdso: Enable mips to use common headers Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 16/19] x86: vdso: Enable x86 " Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 17/19] arm: vdso: Enable arm " Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 18/19] lib: vdso: Enable " Vincenzo Frascino
2020-02-13 16:16 ` [PATCH 19/19] arm64: vdso32: Enable Clang Compilation Vincenzo Frascino
2020-02-13 18:44   ` Nathan Chancellor
2020-02-17 12:26     ` Vincenzo Frascino
2020-02-17 16:46       ` Will Deacon
2020-02-17 22:39         ` Ard Biesheuvel
2020-02-18 13:03           ` Vincenzo Frascino

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