[x86,arm64,armhf] Add rtla package for Real-Time Linux Analysis tools

- Patch the upstream Makefile to allow appending to CFLAGS and LDFLAGS
- Patch the upstream Makefile to fix command symlinks
- Add control file template
- Add the necessary glue in rules.real and rules.d
- Add manual page symlinks mirroring the command symlinks

I'm only adding this for architectures that we build an RT kernel for.

3 files changed, 52 insertions, 0 deletions

diff --git a/debian/patches/bugfix/all/tools-rtla-build-with-extra-c-ld-flags.patch b/debian/patches/bugfix/all/tools-rtla-build-with-extra-c-ld-flags.patch
new file mode 100644
index 000000000..f64205079
--- /dev/null
+++ b/debian/patches/bugfix/all/tools-rtla-build-with-extra-c-ld-flags.patch
@@ -0,0 +1,24 @@
+From: Ben Hutchings <benh@debian.org>
+Date: Sat, 16 Jul 2022 15:00:01 +0200
+Subject: tools/rtla: Build with EXTRA_{C,LD}FLAGS
+Forwarded: https://lore.kernel.org/linux-trace-devel/YtLBshz0nMQ7530H@decadent.org.uk/T/
+
+To allow for distributions and other builders to apply hardening
+policy and other customisation, append EXTRA_CFLAGS and EXTRA_LDFLAGS
+to the corresponding variables.
+
+Signed-off-by: Ben Hutchings <benh@debian.org>
+---
+--- a/tools/tracing/rtla/Makefile
++++ b/tools/tracing/rtla/Makefile
+@@ -30,8 +30,8 @@ WOPTS	:= 	-Wall -Werror=format-security
+ 
+ TRACEFS_HEADERS	:= $$($(PKG_CONFIG) --cflags libtracefs)
+ 
+-CFLAGS	:=	-O -g -DVERSION=\"$(VERSION)\" $(FOPTS) $(MOPTS) $(WOPTS) $(TRACEFS_HEADERS)
+-LDFLAGS	:=	-ggdb
++CFLAGS	:=	-O -g -DVERSION=\"$(VERSION)\" $(FOPTS) $(MOPTS) $(WOPTS) $(TRACEFS_HEADERS) $(EXTRA_CFLAGS)
++LDFLAGS	:=	-ggdb $(EXTRA_LDFLAGS)
+ LIBS	:=	$$($(PKG_CONFIG) --libs libtracefs)
+ 
+ SRC	:=	$(wildcard src/*.c)
diff --git a/debian/patches/bugfix/all/tools-rtla-fix-command-symlinks.patch b/debian/patches/bugfix/all/tools-rtla-fix-command-symlinks.patch
new file mode 100644
index 000000000..5a6fdee1a
--- /dev/null
+++ b/debian/patches/bugfix/all/tools-rtla-fix-command-symlinks.patch
@@ -0,0 +1,26 @@
+From: Ben Hutchings <benh@debian.org>
+Date: Sat, 16 Jul 2022 15:20:27 +0200
+Subject: tools/rtla: Fix command symlinks
+Forwarded: https://lore.kernel.org/linux-trace-devel/YtLBXMI6Ui4HLIF1@decadent.org.uk/T/
+
+"ln -s" stores the next argument directly as the symlink target, so
+it needs to be a relative path.  In this case, just "rtla".
+
+Fixes: 0605bf009f18 ("rtla: Add osnoise tool")
+Fixes: a828cd18bc4a ("rtla: Add timerlat tool and timelart top mode")
+Signed-off-by: Ben Hutchings <benh@debian.org>
+---
+--- a/tools/tracing/rtla/Makefile
++++ b/tools/tracing/rtla/Makefile
+@@ -108,9 +108,9 @@ install: doc_install
+ 	$(INSTALL) rtla -m 755 $(DESTDIR)$(BINDIR)
+ 	$(STRIP) $(DESTDIR)$(BINDIR)/rtla
+ 	@test ! -f $(DESTDIR)$(BINDIR)/osnoise || rm $(DESTDIR)$(BINDIR)/osnoise
+-	ln -s $(DESTDIR)$(BINDIR)/rtla $(DESTDIR)$(BINDIR)/osnoise
++	ln -s rtla $(DESTDIR)$(BINDIR)/osnoise
+ 	@test ! -f $(DESTDIR)$(BINDIR)/timerlat || rm $(DESTDIR)$(BINDIR)/timerlat
+-	ln -s $(DESTDIR)$(BINDIR)/rtla $(DESTDIR)$(BINDIR)/timerlat
++	ln -s rtla $(DESTDIR)$(BINDIR)/timerlat
+ 
+ .PHONY: clean tarball
+ clean: doc_clean
diff --git a/debian/patches/series b/debian/patches/series
index 2a2f2fb61..a3f73d5d4 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -178,5 +178,7 @@ bugfix/all/tools-perf-fix-compilation-error-with-new-binutils.patch
 bugfix/all/tools-bpf_jit_disasm-fix-compilation-error-with-new-binutils.patch
 bugfix/all/tools-bpftool-fix-compilation-error-with-new-binutils.patch
 bugfix/all/tools-perf-fix-build-without-libbfd.patch
+bugfix/all/tools-rtla-build-with-extra-c-ld-flags.patch
+bugfix/all/tools-rtla-fix-command-symlinks.patch
 
 # ABI maintenance