[glibc] malloc: Decrease resource usage for malloc tests

[glibc] malloc: Decrease resource usage for malloc tests

[Adhemerval Zanella]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=94384bdf3955e59f508a6d927065fe0aa824d82b

commit 94384bdf3955e59f508a6d927065fe0aa824d82b
Author: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
Date:   Wed Jun 7 14:39:55 2023 -0300

    malloc: Decrease resource usage for malloc tests
    
    The tst-mallocfork2 and tst-mallocfork3 create large number of
    subprocesss, around 11k for former and 20k for latter, to check
    for malloc async-signal-safeness on both fork and _Fork.  However
    they do not really exercise allocation patterns different than
    other tests fro malloc itself, and the spawned process just exit
    without any extra computation.
    
    The tst-malloc-tcache-leak is similar, but creates 100k threads
    and already checks the resulting with mallinfo.
    
    These tests are also very sensitive to system load (since they
    estresss heavy the kernel resource allocation), and adding them
    on THP tunable and mcheck tests increase the pressure even more.
    
    For THP the fork tests do not add any more coverage than other
    tests.  The mcheck is also not enable for tst-malloc-tcache-leak.
    
    Checked on x86_64-linux-gnu.
    Reviewed-by: Carlos O'Donell <carlos@redhat.com>

Diff:
---
 malloc/Makefile | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/malloc/Makefile b/malloc/Makefile
index ce6ebcf1b3..c1db3347d8 100644
--- a/malloc/Makefile
+++ b/malloc/Makefile
@@ -74,7 +74,10 @@ test-srcs = tst-mtrace
 # with MALLOC_CHECK_=3 because they expect a specific failure.
 tests-exclude-malloc-check = tst-malloc-check tst-malloc-usable \
 	tst-mxfast tst-safe-linking \
-	tst-compathooks-off tst-compathooks-on tst-memalign-2 tst-memalign-3
+	tst-compathooks-off tst-compathooks-on tst-memalign-2 tst-memalign-3 \
+	tst-mallocfork2 \
+	tst-mallocfork3 \
+	tst-malloc-tcache-leak
 
 # Run all tests with MALLOC_CHECK_=3
 tests-malloc-check = $(filter-out $(tests-exclude-malloc-check) \
@@ -92,7 +95,10 @@ tests-exclude-hugetlb1 = \
 	tst-interpose-static-thread \
 	tst-malloc-usable \
 	tst-malloc-usable-tunables \
-	tst-mallocstate
+	tst-mallocstate \
+	tst-malloc-tcache-leak \
+	tst-mallocfork2 \
+	tst-mallocfork3
 # The tst-free-errno relies on the used malloc page size to mmap an
 # overlapping region.
 tests-exclude-hugetlb2 = \
@@ -121,7 +127,9 @@ tests-exclude-mcheck = tst-mallocstate \
 	tst-compathooks-off tst-compathooks-on \
 	tst-memalign-2 \
 	tst-memalign-3 \
-	tst-mxfast
+	tst-mxfast \
+	tst-mallocfork2 \
+	tst-mallocfork3
 
 tests-mcheck = $(filter-out $(tests-exclude-mcheck) $(tests-static), $(tests))
 endif
@@ -182,14 +190,10 @@ $(objpfx)tst-malloc-fork-deadlock-malloc-check: $(shared-thread-library)
 $(objpfx)tst-malloc-stats-cancellation-malloc-check: $(shared-thread-library)
 $(objpfx)tst-malloc-thread-exit-malloc-hugetlb1: $(shared-thread-library)
 $(objpfx)tst-malloc-thread-fail-malloc-hugetlb1: $(shared-thread-library)
-$(objpfx)tst-mallocfork2-malloc-hugetlb1: $(shared-thread-library)
-$(objpfx)tst-mallocfork3-malloc-hugetlb1: $(shared-thread-library)
 $(objpfx)tst-malloc-fork-deadlock-malloc-hugetlb1: $(shared-thread-library)
 $(objpfx)tst-malloc-stats-cancellation-malloc-hugetlb1: $(shared-thread-library)
 $(objpfx)tst-malloc-thread-exit-malloc-hugetlb2: $(shared-thread-library)
 $(objpfx)tst-malloc-thread-fail-malloc-hugetlb2: $(shared-thread-library)
-$(objpfx)tst-mallocfork2-malloc-hugetlb2: $(shared-thread-library)
-$(objpfx)tst-mallocfork3-malloc-hugetlb2: $(shared-thread-library)
 $(objpfx)tst-malloc-fork-deadlock-malloc-hugetlb2: $(shared-thread-library)
 $(objpfx)tst-malloc-stats-cancellation-malloc-hugetlb2: $(shared-thread-library)
 
@@ -344,14 +348,9 @@ $(objpfx)tst-dynarray-fail-mem.out: $(objpfx)tst-dynarray-fail.out
 $(objpfx)tst-malloc-tcache-leak: $(shared-thread-library)
 $(objpfx)tst-malloc_info: $(shared-thread-library)
 $(objpfx)tst-mallocfork2: $(shared-thread-library)
-$(objpfx)tst-malloc-tcache-leak-mcheck: $(shared-thread-library)
 $(objpfx)tst-malloc_info-mcheck: $(shared-thread-library)
-$(objpfx)tst-mallocfork2-mcheck: $(shared-thread-library)
-$(objpfx)tst-malloc-tcache-leak-malloc-check: $(shared-thread-library)
 $(objpfx)tst-malloc_info-malloc-check: $(shared-thread-library)
 $(objpfx)tst-mallocfork2-malloc-check: $(shared-thread-library)
-$(objpfx)tst-malloc-tcache-leak-malloc-hugetlb1: $(shared-thread-library)
-$(objpfx)tst-malloc-tcache-leak-malloc-hugetlb2: $(shared-thread-library)
 $(objpfx)tst-malloc_info-malloc-hugetlb1: $(shared-thread-library)
 $(objpfx)tst-malloc_info-malloc-hugetlb2: $(shared-thread-library)
 $(objpfx)tst-memalign-3: $(shared-thread-library)