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Date: Tue, 19 May 2015 06:36:32 -0700
From: tip-bot for Nicholas Mc Guire <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: hpa@...or.com, hofrat@...dl.org, mingo@...nel.org,
sam@...nborg.org, yamada.m@...panasonic.com, mmarek@...e.cz,
pjt@...gle.com, ahh@...gle.com, joe@...ches.com,
linux-kernel@...r.kernel.org, tglx@...utronix.de,
john.stultz@...aro.org
Subject: [tip:timers/core] time: Move timeconst.h into include/generated
Commit-ID: 0a227985d4a993a322ff72ecbaeee2611d624216
Gitweb: http://git.kernel.org/tip/0a227985d4a993a322ff72ecbaeee2611d624216
Author: Nicholas Mc Guire <hofrat@...dl.org>
AuthorDate: Mon, 18 May 2015 14:19:12 +0200
Committer: Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 19 May 2015 15:13:45 +0200
time: Move timeconst.h into include/generated
kernel/time/timeconst.h is moved to include/generated/ and generated
by the top level Kbuild. This allows using timeconst.h in an earlier
build stage.
Signed-off-by: Nicholas Mc Guire <hofrat@...dl.org>
Cc: Masahiro Yamada <yamada.m@...panasonic.com>
Cc: Sam Ravnborg <sam@...nborg.org>
Cc: Joe Perches <joe@...ches.com>
Cc: John Stultz <john.stultz@...aro.org>
Cc: Andrew Hunter <ahh@...gle.com>
Cc: Paul Turner <pjt@...gle.com>
Cc: Michal Marek <mmarek@...e.cz>
Link: http://lkml.kernel.org/r/1431951554-5563-1-git-send-email-hofrat@osadl.org
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
Kbuild | 34 +++++++++++++++++++++++++++-------
kernel/time/Makefile | 17 +----------------
kernel/time/time.c | 2 +-
kernel/time/timeconst.bc | 3 ++-
4 files changed, 31 insertions(+), 25 deletions(-)
diff --git a/Kbuild b/Kbuild
index 6f0d82a..df99a5f 100644
--- a/Kbuild
+++ b/Kbuild
@@ -2,8 +2,9 @@
# Kbuild for top-level directory of the kernel
# This file takes care of the following:
# 1) Generate bounds.h
-# 2) Generate asm-offsets.h (may need bounds.h)
-# 3) Check for missing system calls
+# 2) Generate timeconst.h
+# 3) Generate asm-offsets.h (may need bounds.h and timeconst.h)
+# 4) Check for missing system calls
# Default sed regexp - multiline due to syntax constraints
define sed-y
@@ -47,7 +48,26 @@ $(obj)/$(bounds-file): kernel/bounds.s FORCE
$(call filechk,offsets,__LINUX_BOUNDS_H__)
#####
-# 2) Generate asm-offsets.h
+# 2) Generate timeconst.h
+
+timeconst-file := include/generated/timeconst.h
+
+#always += $(timeconst-file)
+targets += $(timeconst-file)
+
+quiet_cmd_gentimeconst = GEN $@
+define cmd_gentimeconst
+ (echo $(CONFIG_HZ) | bc -q $< ) > $@
+endef
+define filechk_gentimeconst
+ (echo $(CONFIG_HZ) | bc -q $< )
+endef
+
+$(obj)/$(timeconst-file): kernel/time/timeconst.bc FORCE
+ $(call filechk,gentimeconst)
+
+#####
+# 3) Generate asm-offsets.h
#
offsets-file := include/generated/asm-offsets.h
@@ -57,7 +77,7 @@ targets += arch/$(SRCARCH)/kernel/asm-offsets.s
# We use internal kbuild rules to avoid the "is up to date" message from make
arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \
- $(obj)/$(bounds-file) FORCE
+ $(obj)/$(timeconst-file) $(obj)/$(bounds-file) FORCE
$(Q)mkdir -p $(dir $@)
$(call if_changed_dep,cc_s_c)
@@ -65,7 +85,7 @@ $(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE
$(call filechk,offsets,__ASM_OFFSETS_H__)
#####
-# 3) Check for missing system calls
+# 4) Check for missing system calls
#
always += missing-syscalls
@@ -77,5 +97,5 @@ quiet_cmd_syscalls = CALL $<
missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE
$(call cmd,syscalls)
-# Keep these two files during make clean
-no-clean-files := $(bounds-file) $(offsets-file)
+# Keep these three files during make clean
+no-clean-files := $(bounds-file) $(offsets-file) $(timeconst-file)
diff --git a/kernel/time/Makefile b/kernel/time/Makefile
index 01f0312..ffc4cc3 100644
--- a/kernel/time/Makefile
+++ b/kernel/time/Makefile
@@ -13,19 +13,4 @@ obj-$(CONFIG_TIMER_STATS) += timer_stats.o
obj-$(CONFIG_DEBUG_FS) += timekeeping_debug.o
obj-$(CONFIG_TEST_UDELAY) += test_udelay.o
-$(obj)/time.o: $(obj)/timeconst.h
-
-quiet_cmd_hzfile = HZFILE $@
- cmd_hzfile = echo "hz=$(CONFIG_HZ)" > $@
-
-targets += hz.bc
-$(obj)/hz.bc: $(objtree)/include/config/hz.h FORCE
- $(call if_changed,hzfile)
-
-quiet_cmd_bc = BC $@
- cmd_bc = bc -q $(filter-out FORCE,$^) > $@
-
-targets += timeconst.h
-$(obj)/timeconst.h: $(obj)/hz.bc $(src)/timeconst.bc FORCE
- $(call if_changed,bc)
-
+$(obj)/time.o: $(objtree)/include/config/
diff --git a/kernel/time/time.c b/kernel/time/time.c
index 2c85b77..4fa1d26 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -41,7 +41,7 @@
#include <asm/uaccess.h>
#include <asm/unistd.h>
-#include "timeconst.h"
+#include <generated/timeconst.h>
#include "timekeeping.h"
/*
diff --git a/kernel/time/timeconst.bc b/kernel/time/timeconst.bc
index 511bdf2..c7388de 100644
--- a/kernel/time/timeconst.bc
+++ b/kernel/time/timeconst.bc
@@ -50,7 +50,7 @@ define timeconst(hz) {
print "#include <linux/types.h>\n\n"
print "#if HZ != ", hz, "\n"
- print "#error \qkernel/timeconst.h has the wrong HZ value!\q\n"
+ print "#error \qinclude/generated/timeconst.h has the wrong HZ value!\q\n"
print "#endif\n\n"
if (hz < 2) {
@@ -105,4 +105,5 @@ define timeconst(hz) {
halt
}
+hz = read();
timeconst(hz)
--
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