diff options
| author | Dmitrii Dolgov <9erthalion6@gmail.com> | 2026-02-08 13:22:24 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2026-02-08 19:16:24 -0300 |
| commit | 2e05bb52a12d3cdb81f3b6f5de5cb3905d383552 (patch) | |
| tree | 38b851124b1bc6fca2c918aa2446b239a47036d2 /tools/build | |
| parent | 6a32fa5ccd33da5d187ec6e78f3b45683399ab66 (diff) | |
perf test workload: Add code_with_type test workload
The purpose of the workload is to gather samples of rust runtime. To
achieve that it has a dummy rust library linked with it.
Per recommendations for such scenarios [1], the rust library is
statically linked.
An example:
$ perf record perf test -w code_with_type
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.160 MB perf.data (4074 samples) ]
$ perf report --stdio --dso perf -s srcfile,srcline
45.16% ub_checks.rs ub_checks.rs:72
6.72% code_with_type.rs code_with_type.rs:15
6.64% range.rs range.rs:767
4.26% code_with_type.rs code_with_type.rs:21
4.23% range.rs range.rs:0
3.99% code_with_type.rs code_with_type.rs:16
[...]
[1]: https://doc.rust-lang.org/reference/linkage.html#mixed-rust-and-foreign-codebases
Signed-off-by: Dmitrii Dolgov <9erthalion6@gmail.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/build')
| -rw-r--r-- | tools/build/Makefile.build | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build index 3584ff308607..60e65870eae1 100644 --- a/tools/build/Makefile.build +++ b/tools/build/Makefile.build @@ -76,6 +76,14 @@ quiet_cmd_host_ld_multi = HOSTLD $@ cmd_host_ld_multi = $(if $(strip $(obj-y)),\ $(HOSTLD) -r -o $@ $(filter $(obj-y),$^),rm -f $@; $(HOSTAR) rcs $@) +rust_common_cmd = \ + $(RUSTC) $(rust_flags) \ + --crate-type staticlib -L $(objtree)/rust/ \ + --emit=dep-info=$(depfile),link + +quiet_cmd_rustc_a_rs = $(RUSTC) $(quiet_modtag) $@ + cmd_rustc_a_rs = $(rust_common_cmd) -o $@ -g $< $(cmd_objtool) + ifneq ($(filter $(obj),$(hostprogs)),) host = host_ endif @@ -105,6 +113,12 @@ $(OUTPUT)%.s: %.c FORCE $(call rule_mkdir) $(call if_changed_dep,cc_s_c) +# it's recommended to build a static rust library, when a foreight (to rust) +# linker is used. +$(OUTPUT)%.a: %.rs FORCE + $(call rule_mkdir) + $(call if_changed_dep,rustc_a_rs) + # bison and flex files are generated in the OUTPUT directory # so it needs a separate rule to depend on them properly $(OUTPUT)%-bison.o: $(OUTPUT)%-bison.c FORCE |