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authorH.J. Lu <hjl.tools@gmail.com>2020-07-12 06:04:53 -0700
committerH.J. Lu <hjl.tools@gmail.com>2021-01-15 05:59:10 -0800
commit86f65dffc2396d408beb628f1cad2b8f63e197bd (patch)
tree70d71a492800a6b4838ff2232ecc315d353a469b /elf/Makefile
parentcc528f9a7e51f769ea79a9c413af417671bcc695 (diff)
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ld.so: Add --list-tunables to print tunable values
Pass --list-tunables to ld.so to print tunables with min and max values.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Diffstat (limited to 'elf/Makefile')
-rw-r--r--elf/Makefile11
1 files changed, 11 insertions, 0 deletions
diff --git a/elf/Makefile b/elf/Makefile
index c41d11693b..5e7f938e2d 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -45,6 +45,10 @@ dl-routines += dl-tunables
 tunables-type = $(addprefix TUNABLES_FRONTEND_,$(have-tunables))
 CPPFLAGS-dl-tunables.c += -DTUNABLES_FRONTEND=$(tunables-type)
 
+ifeq (yesyes,$(build-shared)$(run-built-tests))
+tests-special += $(objpfx)list-tunables.out
+endif
+
 # Make sure that the compiler does not insert any library calls in tunables
 # code paths.
 ifeq (yes,$(have-loop-to-function))
@@ -1896,3 +1900,10 @@ $(objpfx)tst-glibc-hwcaps-mask.out: \
 # Generic dependency for sysdeps implementation of
 # tst-glibc-hwcaps-cache.
 $(objpfx)tst-glibc-hwcaps-cache.out: $(objpfx)tst-glibc-hwcaps
+
+$(objpfx)list-tunables.out: tst-rtld-list-tunables.sh $(objpfx)ld.so
+	$(SHELL) $< $(objpfx)ld.so '$(test-wrapper-env)' \
+	    '$(run_program_env)' > $(objpfx)/tst-rtld-list-tunables.out
+	cmp tst-rtld-list-tunables.exp \
+	    $(objpfx)/tst-rtld-list-tunables.out > $@; \
+	$(evaluate-test)