From e2bcd3ad093a6bd4a045d5b5d22f0b92243d0da3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alex=20Benn=C3=A9e?= Date: Fri, 9 Jul 2021 15:29:51 +0100 Subject: [PATCH] tests/tcg: make test-mmap a little less aggressive MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The check_aligned_anonymous_unfixed_mmaps and check_aligned_anonymous_unfixed_colliding_mmaps do a lot of mmap's and copying of data. This is especially unfriendly to targets like hexagon which have quite large pages and need to do sanity checks on each memory access. While we are at it clean-up the white space and style issues from the legacy code. As we no longer do quite so much needless memory access we can also remove the hexagon timeout hack. Signed-off-by: Alex Bennée Reviewed-by: Richard Henderson Reviewed-by: Taylor Simpson Message-Id: <20210709143005.1554-27-alex.bennee@linaro.org> --- tests/tcg/hexagon/Makefile.target | 9 -- tests/tcg/multiarch/test-mmap.c | 190 +++++++++++++++--------------- 2 files changed, 95 insertions(+), 104 deletions(-) diff --git a/tests/tcg/hexagon/Makefile.target b/tests/tcg/hexagon/Makefile.target index 0992787d50..050cd61c1a 100644 --- a/tests/tcg/hexagon/Makefile.target +++ b/tests/tcg/hexagon/Makefile.target @@ -18,15 +18,6 @@ # Hexagon doesn't support gdb, so skip the EXTRA_RUNS EXTRA_RUNS = -# Hexagon has 64K pages, so increase the timeout to keep -# test-mmap from timing out -ifeq ($(CONFIG_DEBUG_TCG),y) -TIMEOUT=800 -else -TIMEOUT=500 -endif - - CFLAGS += -Wno-incompatible-pointer-types -Wno-undefined-internal CFLAGS += -fno-unroll-loops diff --git a/tests/tcg/multiarch/test-mmap.c b/tests/tcg/multiarch/test-mmap.c index 11d0e777b1..96257f8ebe 100644 --- a/tests/tcg/multiarch/test-mmap.c +++ b/tests/tcg/multiarch/test-mmap.c @@ -49,64 +49,62 @@ size_t test_fsize; void check_aligned_anonymous_unfixed_mmaps(void) { - void *p1; - void *p2; - void *p3; - void *p4; - void *p5; - uintptr_t p; - int i; + void *p1; + void *p2; + void *p3; + void *p4; + void *p5; + uintptr_t p; + int i; + fprintf(stdout, "%s", __func__); + for (i = 0; i < 8; i++) { + size_t len; + len = pagesize + (pagesize * i); + p1 = mmap(NULL, len, PROT_READ, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + p2 = mmap(NULL, len, PROT_READ, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + p3 = mmap(NULL, len, PROT_READ, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + p4 = mmap(NULL, len, PROT_READ, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + p5 = mmap(NULL, len, PROT_READ, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - fprintf(stdout, "%s", __func__); - for (i = 0; i < 0x1fff; i++) - { - size_t len; + /* + * Make sure we get pages aligned with the pagesize. The + * target expects this. + */ + fail_unless(p1 != MAP_FAILED); + fail_unless(p2 != MAP_FAILED); + fail_unless(p3 != MAP_FAILED); + fail_unless(p4 != MAP_FAILED); + fail_unless(p5 != MAP_FAILED); + p = (uintptr_t) p1; + D(printf("p=%x\n", p)); + fail_unless((p & pagemask) == 0); + p = (uintptr_t) p2; + fail_unless((p & pagemask) == 0); + p = (uintptr_t) p3; + fail_unless((p & pagemask) == 0); + p = (uintptr_t) p4; + fail_unless((p & pagemask) == 0); + p = (uintptr_t) p5; + fail_unless((p & pagemask) == 0); - len = pagesize + (pagesize * i & 7); - p1 = mmap(NULL, len, PROT_READ, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - p2 = mmap(NULL, len, PROT_READ, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - p3 = mmap(NULL, len, PROT_READ, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - p4 = mmap(NULL, len, PROT_READ, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - p5 = mmap(NULL, len, PROT_READ, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - - /* Make sure we get pages aligned with the pagesize. The - target expects this. */ - fail_unless (p1 != MAP_FAILED); - fail_unless (p2 != MAP_FAILED); - fail_unless (p3 != MAP_FAILED); - fail_unless (p4 != MAP_FAILED); - fail_unless (p5 != MAP_FAILED); - p = (uintptr_t) p1; - D(printf ("p=%x\n", p)); - fail_unless ((p & pagemask) == 0); - p = (uintptr_t) p2; - fail_unless ((p & pagemask) == 0); - p = (uintptr_t) p3; - fail_unless ((p & pagemask) == 0); - p = (uintptr_t) p4; - fail_unless ((p & pagemask) == 0); - p = (uintptr_t) p5; - fail_unless ((p & pagemask) == 0); - - /* Make sure we can read from the entire area. */ - memcpy (dummybuf, p1, pagesize); - memcpy (dummybuf, p2, pagesize); - memcpy (dummybuf, p3, pagesize); - memcpy (dummybuf, p4, pagesize); - memcpy (dummybuf, p5, pagesize); - - munmap (p1, len); - munmap (p2, len); - munmap (p3, len); - munmap (p4, len); - munmap (p5, len); - } - fprintf(stdout, " passed\n"); + /* Make sure we can read from the entire area. */ + memcpy(dummybuf, p1, pagesize); + memcpy(dummybuf, p2, pagesize); + memcpy(dummybuf, p3, pagesize); + memcpy(dummybuf, p4, pagesize); + memcpy(dummybuf, p5, pagesize); + munmap(p1, len); + munmap(p2, len); + munmap(p3, len); + munmap(p4, len); + munmap(p5, len); + } + fprintf(stdout, " passed\n"); } void check_large_anonymous_unfixed_mmap(void) @@ -135,52 +133,54 @@ void check_large_anonymous_unfixed_mmap(void) void check_aligned_anonymous_unfixed_colliding_mmaps(void) { - char *p1; - char *p2; - char *p3; - uintptr_t p; - int i; + char *p1; + char *p2; + char *p3; + uintptr_t p; + int i; - fprintf(stdout, "%s", __func__); - for (i = 0; i < 0x2fff; i++) - { - int nlen; - p1 = mmap(NULL, pagesize, PROT_READ, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - fail_unless (p1 != MAP_FAILED); - p = (uintptr_t) p1; - fail_unless ((p & pagemask) == 0); - memcpy (dummybuf, p1, pagesize); + fprintf(stdout, "%s", __func__); + for (i = 0; i < 2; i++) { + int nlen; + p1 = mmap(NULL, pagesize, PROT_READ, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + fail_unless(p1 != MAP_FAILED); + p = (uintptr_t) p1; + fail_unless((p & pagemask) == 0); + memcpy(dummybuf, p1, pagesize); - p2 = mmap(NULL, pagesize, PROT_READ, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - fail_unless (p2 != MAP_FAILED); - p = (uintptr_t) p2; - fail_unless ((p & pagemask) == 0); - memcpy (dummybuf, p2, pagesize); + p2 = mmap(NULL, pagesize, PROT_READ, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + fail_unless(p2 != MAP_FAILED); + p = (uintptr_t) p2; + fail_unless((p & pagemask) == 0); + memcpy(dummybuf, p2, pagesize); - munmap (p1, pagesize); - nlen = pagesize * 8; - p3 = mmap(NULL, nlen, PROT_READ, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - fail_unless (p3 != MAP_FAILED); + munmap(p1, pagesize); + nlen = pagesize * 8; + p3 = mmap(NULL, nlen, PROT_READ, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + fail_unless(p3 != MAP_FAILED); - /* Check if the mmaped areas collide. */ - if (p3 < p2 - && (p3 + nlen) > p2) - fail_unless (0); + /* Check if the mmaped areas collide. */ + if (p3 < p2 + && (p3 + nlen) > p2) { + fail_unless(0); + } - memcpy (dummybuf, p3, pagesize); + memcpy(dummybuf, p3, pagesize); - /* Make sure we get pages aligned with the pagesize. The - target expects this. */ - p = (uintptr_t) p3; - fail_unless ((p & pagemask) == 0); - munmap (p2, pagesize); - munmap (p3, nlen); - } - fprintf(stdout, " passed\n"); + /* + * Make sure we get pages aligned with the pagesize. The + * target expects this. + */ + p = (uintptr_t) p3; + fail_unless((p & pagemask) == 0); + munmap(p2, pagesize); + munmap(p3, nlen); + } + fprintf(stdout, " passed\n"); } void check_aligned_anonymous_fixed_mmaps(void)