diff mbox series

[net-next] selftests: net: rebuild YNL if dependencies changed

Message ID 20241010220826.2215358-1-kuba@kernel.org (mailing list archive)
State New
Delegated to: Netdev Maintainers
Headers show
Series [net-next] selftests: net: rebuild YNL if dependencies changed | expand

Checks

Context Check Description
netdev/series_format success Single patches do not need cover letters
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 5 this patch: 5
netdev/build_tools success Errors and warnings before: 0 (+1) this patch: 0 (+1)
netdev/cc_maintainers warning 2 maintainers not CCed: linux-kselftest@vger.kernel.org shuah@kernel.org
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 3 this patch: 3
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 29 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest warning net-next-2024-10-11--00-00 (tests: 777)

Commit Message

Jakub Kicinski Oct. 10, 2024, 10:08 p.m. UTC 
Try to rebuild YNL if either user added a new family or the specs
of the families have changed. Stanislav's ncdevmem cause a false
positive build failure in NIPA because libynl.a isn't rebuilt
after ethtool is added to YNL_GENS.

Note that sha1sum is already used in other parts of the build system.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
CC: sdf@fomichev.me
---
 tools/testing/selftests/net/ynl.mk | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

Comments

Jakub Kicinski Oct. 10, 2024, 10:16 p.m. UTC | #1 
On Thu, 10 Oct 2024 15:08:26 -0700 Jakub Kicinski wrote:
> +	$(Q)rm -f $(OUTPUT)/libynl-*.sig
> +	$(Q)touch $(OUTPUT)/libynl-$(YNL_GENS_HASH).sig

I forgot about .gitignore :(
Stanislav Fomichev Oct. 10, 2024, 10:42 p.m. UTC | #2 
On 10/10, Jakub Kicinski wrote:
> Try to rebuild YNL if either user added a new family or the specs
> of the families have changed. Stanislav's ncdevmem cause a false
> positive build failure in NIPA because libynl.a isn't rebuilt
> after ethtool is added to YNL_GENS.
> 
> Note that sha1sum is already used in other parts of the build system.
> 
> Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Acked-by: Stanislav Fomichev <sdf@fomichev.me>
diff mbox series

Patch

diff --git a/tools/testing/selftests/net/ynl.mk b/tools/testing/selftests/net/ynl.mk
index 1ef24119def0..07bc011e6d9a 100644
--- a/tools/testing/selftests/net/ynl.mk
+++ b/tools/testing/selftests/net/ynl.mk
@@ -9,6 +9,8 @@ 
 # YNL_GEN_FILES: TEST_GEN_FILES which need YNL
 
 YNL_OUTPUTS := $(patsubst %,$(OUTPUT)/%,$(YNL_GEN_FILES))
+YNL_SPECS := \
+	$(patsubst %,$(top_srcdir)/Documentation/netlink/specs/%.yaml,$(YNL_GENS))
 
 $(YNL_OUTPUTS): $(OUTPUT)/libynl.a
 $(YNL_OUTPUTS): CFLAGS += \
@@ -16,10 +18,19 @@  $(YNL_OUTPUTS): CFLAGS += \
 	-I$(top_srcdir)/tools/net/ynl/lib/ \
 	-I$(top_srcdir)/tools/net/ynl/generated/
 
-$(OUTPUT)/libynl.a:
+# Make sure we rebuild libynl if user added a new family. We can't easily
+# depend on the contents of a variable so create a fake file with a hash.
+YNL_GENS_HASH := $(shell echo $(YNL_GENS) | sha1sum | cut -c1-8)
+$(OUTPUT)/libynl-$(YNL_GENS_HASH).sig:
+	$(Q)rm -f $(OUTPUT)/libynl-*.sig
+	$(Q)touch $(OUTPUT)/libynl-$(YNL_GENS_HASH).sig
+
+$(OUTPUT)/libynl.a: $(YNL_SPECS) $(OUTPUT)/libynl-$(YNL_GENS_HASH).sig
+	$(Q)rm -f $(top_srcdir)/tools/net/ynl/libynl.a
 	$(Q)$(MAKE) -C $(top_srcdir)/tools/net/ynl GENS="$(YNL_GENS)" libynl.a
 	$(Q)cp $(top_srcdir)/tools/net/ynl/libynl.a $(OUTPUT)/libynl.a
 
 EXTRA_CLEAN += \
 	$(top_srcdir)/tools/net/ynl/lib/__pycache__ \
-	$(top_srcdir)/tools/net/ynl/lib/*.[ado]
+	$(top_srcdir)/tools/net/ynl/lib/*.[ado] \
+	$(OUTPUT)/libynl-*.sig