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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-25 10:29:09 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-25 10:29:09 -0800 |
commit | 7b46588f364f4f40c25f43ceabb6f705d20793e2 (patch) | |
tree | 29e80019ee791abe58176161f3ae2b766749b808 /tools | |
parent | 915f3e3f76c05b2da93c4cc278eebc2d9219d9f4 (diff) | |
parent | 95330473636e5e4546f94874c957c3be66bb2140 (diff) | |
download | linux-7b46588f364f4f40c25f43ceabb6f705d20793e2.tar.bz2 |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
- almost all of the rest of MM
- misc bits
- KASAN updates
- procfs
- lib/ updates
- checkpatch updates
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (124 commits)
checkpatch: remove false unbalanced braces warning
checkpatch: notice unbalanced else braces in a patch
checkpatch: add another old address for the FSF
checkpatch: update $logFunctions
checkpatch: warn on logging continuations
checkpatch: warn on embedded function names
lib/lz4: remove back-compat wrappers
fs/pstore: fs/squashfs: change usage of LZ4 to work with new LZ4 version
crypto: change LZ4 modules to work with new LZ4 module version
lib/decompress_unlz4: change module to work with new LZ4 module version
lib: update LZ4 compressor module
lib/test_sort.c: make it explicitly non-modular
lib: add CONFIG_TEST_SORT to enable self-test of sort()
rbtree: use designated initializers
linux/kernel.h: fix DIV_ROUND_CLOSEST to support negative divisors
lib/find_bit.c: micro-optimise find_next_*_bit
lib: add module support to atomic64 tests
lib: add module support to glob tests
lib: add module support to crc32 tests
kernel/ksysfs.c: add __ro_after_init to bin_attribute structure
...
Diffstat (limited to 'tools')
-rw-r--r-- | tools/lib/find_bit.c | 2 | ||||
-rw-r--r-- | tools/testing/selftests/vm/userfaultfd.c | 22 |
2 files changed, 11 insertions, 13 deletions
diff --git a/tools/lib/find_bit.c b/tools/lib/find_bit.c index 6d8b8f22cf55..42c15f906aac 100644 --- a/tools/lib/find_bit.c +++ b/tools/lib/find_bit.c @@ -34,7 +34,7 @@ static unsigned long _find_next_bit(const unsigned long *addr, { unsigned long tmp; - if (!nbits || start >= nbits) + if (unlikely(start >= nbits)) return nbits; tmp = addr[start / BITS_PER_LONG] ^ invert; diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c index 5a840a605a16..e9449c801888 100644 --- a/tools/testing/selftests/vm/userfaultfd.c +++ b/tools/testing/selftests/vm/userfaultfd.c @@ -398,12 +398,12 @@ static void *uffd_poll_thread(void *arg) uffd = msg.arg.fork.ufd; pollfd[0].fd = uffd; break; - case UFFD_EVENT_MADVDONTNEED: - uffd_reg.range.start = msg.arg.madv_dn.start; - uffd_reg.range.len = msg.arg.madv_dn.end - - msg.arg.madv_dn.start; + case UFFD_EVENT_REMOVE: + uffd_reg.range.start = msg.arg.remove.start; + uffd_reg.range.len = msg.arg.remove.end - + msg.arg.remove.start; if (ioctl(uffd, UFFDIO_UNREGISTER, &uffd_reg.range)) - fprintf(stderr, "madv_dn failure\n"), exit(1); + fprintf(stderr, "remove failure\n"), exit(1); break; case UFFD_EVENT_REMAP: area_dst = (char *)(unsigned long)msg.arg.remap.to; @@ -569,9 +569,9 @@ static int userfaultfd_open(int features) * part is accessed after mremap. Since hugetlbfs does not support * mremap, the entire monitored area is accessed in a single pass for * HUGETLB_TEST. - * The release of the pages currently generates event only for - * anonymous memory (UFFD_EVENT_MADVDONTNEED), hence it is not checked - * for hugetlb and shmem. + * The release of the pages currently generates event for shmem and + * anonymous memory (UFFD_EVENT_REMOVE), hence it is not checked + * for hugetlb. */ static int faulting_process(void) { @@ -610,7 +610,6 @@ static int faulting_process(void) } } -#ifndef SHMEM_TEST if (release_pages(area_dst)) return 1; @@ -618,7 +617,6 @@ static int faulting_process(void) if (my_bcmp(area_dst + nr * page_size, zeropage, page_size)) fprintf(stderr, "nr %lu is not zero\n", nr), exit(1); } -#endif /* SHMEM_TEST */ #endif /* HUGETLB_TEST */ @@ -715,14 +713,14 @@ static int userfaultfd_events_test(void) pid_t pid; char c; - printf("testing events (fork, remap, madv_dn): "); + printf("testing events (fork, remap, remove): "); fflush(stdout); if (release_pages(area_dst)) return 1; features = UFFD_FEATURE_EVENT_FORK | UFFD_FEATURE_EVENT_REMAP | - UFFD_FEATURE_EVENT_MADVDONTNEED; + UFFD_FEATURE_EVENT_REMOVE; if (userfaultfd_open(features) < 0) return 1; fcntl(uffd, F_SETFL, uffd_flags | O_NONBLOCK); |