perf tools: Build syscall table .c header from kernel's syscall_64.tbl

[deliverable/linux.git] / tools / perf / arch / x86 / Makefile

diff --git a/tools/perf/arch/x86/Makefile b/tools/perf/arch/x86/Makefile
index 269af21437353b2fb886383ede1e3f9a2f586f25..a33729173b134d08312e5613753acaf10b2825b9 100644 (file)
--- a/tools/perf/arch/x86/Makefile
+++ b/tools/perf/arch/x86/Makefile
@@ -4,3 +4,26 @@ endif
 HAVE_KVM_STAT_SUPPORT := 1
 PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
 PERF_HAVE_JITDUMP := 1
+
+###
+# Syscall table generation
+#
+
+out    := $(OUTPUT)arch/x86/include/generated/asm
+header := $(out)/syscalls_64.c
+sys    := $(srctree)/tools/perf/arch/x86/entry/syscalls
+systbl := $(sys)/syscalltbl.sh
+
+# Create output directory if not already present
+_dummy := $(shell [ -d '$(out)' ] || mkdir -p '$(out)')
+
+$(header): $(sys)/syscall_64.tbl $(systbl)
+       @(test -d ../../kernel -a -d ../../tools -a -d ../perf && ( \
+        (diff -B arch/x86/entry/syscalls/syscall_64.tbl ../../arch/x86/entry/syscalls/syscall_64.tbl >/dev/null) \
+        || echo "Warning: x86_64's syscall_64.tbl differs from kernel" >&2 )) || true
+       $(Q)$(SHELL) '$(systbl)' $(sys)/syscall_64.tbl 'x86_64' > $@
+
+clean::
+       rm -f $(header)
+
+archheaders: $(header)