unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
1
Fork 0
Code Pull requests 5 Wiki Activity

WIP: Skip drivers/dma-buf if hugepages is missing #7

Draft
steffo wants to merge 1 commit from feature/dmabuf into master
pull from: feature/dmabuf
merge into: unimore:master
Conversation 0 Commits 1 Files changed 1 +9 -2
1 changed files with 9 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
tools/testing/selftests/drivers/dma-buf/udmabuf.c
View file

@ -99,8 +99,14 @@ static void *mmap_fd(int fd, off64_t size)
addr = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if (addr == MAP_FAILED) {
ksft_print_msg("%s: ubuf_fd mmap fail\n", TEST_PREFIX);
exit(KSFT_FAIL);
if (errno == ENOMEM || errno == EINVAL) {
ksft_print_msg("%s: ubuf_fd mmap fail, hugepages probably disabled\n", TEST_PREFIX);
exit(KSFT_SKIP);
}
else {
ksft_print_msg("%s: ubuf_fd mmap fail\n", TEST_PREFIX);
exit(KSFT_FAIL);
}
}
return addr;
@ -234,6 +240,7 @@ int main(int argc, char *argv[])
close(memfd);
/* should work (migration of 2MB size huge pages)*/
// TODO: Are huge pages enabled?
page_size = getpagesize() * 512; /* 2 MB */
size = MEMFD_SIZE * page_size;
memfd = create_memfd_with_seals(size, true);