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authorIsaku Yamahata <yamahata@valinux.co.jp>2008-05-19 22:13:40 +0900
committerTony Luck <tony.luck@intel.com>2008-05-27 15:09:30 -0700
commit213060a4d6991a95d0b9344406d195be3464accf (patch)
treeb74ead50ae0ae8ca2cfc20df5ad2e5d04a90432d /arch/ia64/kernel/Makefile
parent4df8d22bbbb16ccfa4e10cc068135183c9e5e006 (diff)
downloadlinux-213060a4d6991a95d0b9344406d195be3464accf.tar.bz2
[IA64] pvops: paravirtualize NR_IRQS
Make NR_IRQ overridable by each pv instances. Pv instance may need each own number of irqs so that NR_IRQS should be the maximum number of nr_irqs each pv instances need. Cc: Jes Sorensen <jes@sgi.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/kernel/Makefile')
-rw-r--r--arch/ia64/kernel/Makefile33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index cea91f17d44b..87fea11aecb7 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -73,6 +73,39 @@ $(obj)/gate-syms.o: $(obj)/gate.lds $(obj)/gate.o FORCE
# Note: kbuild does not track this dependency due to usage of .incbin
$(obj)/gate-data.o: $(obj)/gate.so
+# Calculate NR_IRQ = max(IA64_NATIVE_NR_IRQS, XEN_NR_IRQS, ...) based on config
+define sed-y
+ "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"
+endef
+quiet_cmd_nr_irqs = GEN $@
+define cmd_nr_irqs
+ (set -e; \
+ echo "#ifndef __ASM_NR_IRQS_H__"; \
+ echo "#define __ASM_NR_IRQS_H__"; \
+ echo "/*"; \
+ echo " * DO NOT MODIFY."; \
+ echo " *"; \
+ echo " * This file was generated by Kbuild"; \
+ echo " *"; \
+ echo " */"; \
+ echo ""; \
+ sed -ne $(sed-y) $<; \
+ echo ""; \
+ echo "#endif" ) > $@
+endef
+
+# We use internal kbuild rules to avoid the "is up to date" message from make
+arch/$(SRCARCH)/kernel/nr-irqs.s: $(srctree)/arch/$(SRCARCH)/kernel/nr-irqs.c \
+ $(wildcard $(srctree)/include/asm-ia64/*/irq.h)
+ $(Q)mkdir -p $(dir $@)
+ $(call if_changed_dep,cc_s_c)
+
+include/asm-ia64/nr-irqs.h: arch/$(SRCARCH)/kernel/nr-irqs.s
+ $(Q)mkdir -p $(dir $@)
+ $(call cmd,nr_irqs)
+
+clean-files += $(objtree)/include/asm-ia64/nr-irqs.h
+
#
# native ivt.S and entry.S
#