Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / tools / perf / tests / fdarray.c

diff --git a/kernel/tools/perf/tests/fdarray.c b/kernel/tools/perf/tests/fdarray.c
new file mode 100644 (file)
index 0000000..d24b837
--- /dev/null
+++ b/kernel/tools/perf/tests/fdarray.c
@@ -0,0 +1,174 @@
+#include <api/fd/array.h>
+#include "util/debug.h"
+#include "tests/tests.h"
+
+static void fdarray__init_revents(struct fdarray *fda, short revents)
+{
+       int fd;
+
+       fda->nr = fda->nr_alloc;
+
+       for (fd = 0; fd < fda->nr; ++fd) {
+               fda->entries[fd].fd      = fda->nr - fd;
+               fda->entries[fd].revents = revents;
+       }
+}
+
+static int fdarray__fprintf_prefix(struct fdarray *fda, const char *prefix, FILE *fp)
+{
+       int printed = 0;
+
+       if (!verbose)
+               return 0;
+
+       printed += fprintf(fp, "\n%s: ", prefix);
+       return printed + fdarray__fprintf(fda, fp);
+}
+
+int test__fdarray__filter(void)
+{
+       int nr_fds, expected_fd[2], fd, err = TEST_FAIL;
+       struct fdarray *fda = fdarray__new(5, 5);
+
+       if (fda == NULL) {
+               pr_debug("\nfdarray__new() failed!");
+               goto out;
+       }
+
+       fdarray__init_revents(fda, POLLIN);
+       nr_fds = fdarray__filter(fda, POLLHUP, NULL);
+       if (nr_fds != fda->nr_alloc) {
+               pr_debug("\nfdarray__filter()=%d != %d shouldn't have filtered anything",
+                        nr_fds, fda->nr_alloc);
+               goto out_delete;
+       }
+
+       fdarray__init_revents(fda, POLLHUP);
+       nr_fds = fdarray__filter(fda, POLLHUP, NULL);
+       if (nr_fds != 0) {
+               pr_debug("\nfdarray__filter()=%d != %d, should have filtered all fds",
+                        nr_fds, fda->nr_alloc);
+               goto out_delete;
+       }
+
+       fdarray__init_revents(fda, POLLHUP);
+       fda->entries[2].revents = POLLIN;
+       expected_fd[0] = fda->entries[2].fd;
+
+       pr_debug("\nfiltering all but fda->entries[2]:");
+       fdarray__fprintf_prefix(fda, "before", stderr);
+       nr_fds = fdarray__filter(fda, POLLHUP, NULL);
+       fdarray__fprintf_prefix(fda, " after", stderr);
+       if (nr_fds != 1) {
+               pr_debug("\nfdarray__filter()=%d != 1, should have left just one event", nr_fds);
+               goto out_delete;
+       }
+
+       if (fda->entries[0].fd != expected_fd[0]) {
+               pr_debug("\nfda->entries[0].fd=%d != %d\n",
+                        fda->entries[0].fd, expected_fd[0]);
+               goto out_delete;
+       }
+
+       fdarray__init_revents(fda, POLLHUP);
+       fda->entries[0].revents = POLLIN;
+       expected_fd[0] = fda->entries[0].fd;
+       fda->entries[3].revents = POLLIN;
+       expected_fd[1] = fda->entries[3].fd;
+
+       pr_debug("\nfiltering all but (fda->entries[0], fda->entries[3]):");
+       fdarray__fprintf_prefix(fda, "before", stderr);
+       nr_fds = fdarray__filter(fda, POLLHUP, NULL);
+       fdarray__fprintf_prefix(fda, " after", stderr);
+       if (nr_fds != 2) {
+               pr_debug("\nfdarray__filter()=%d != 2, should have left just two events",
+                        nr_fds);
+               goto out_delete;
+       }
+
+       for (fd = 0; fd < 2; ++fd) {
+               if (fda->entries[fd].fd != expected_fd[fd]) {
+                       pr_debug("\nfda->entries[%d].fd=%d != %d\n", fd,
+                                fda->entries[fd].fd, expected_fd[fd]);
+                       goto out_delete;
+               }
+       }
+
+       pr_debug("\n");
+
+       err = 0;
+out_delete:
+       fdarray__delete(fda);
+out:
+       return err;
+}
+
+int test__fdarray__add(void)
+{
+       int err = TEST_FAIL;
+       struct fdarray *fda = fdarray__new(2, 2);
+
+       if (fda == NULL) {
+               pr_debug("\nfdarray__new() failed!");
+               goto out;
+       }
+
+#define FDA_CHECK(_idx, _fd, _revents)                                    \
+       if (fda->entries[_idx].fd != _fd) {                                \
+               pr_debug("\n%d: fda->entries[%d](%d) != %d!",              \
+                        __LINE__, _idx, fda->entries[1].fd, _fd);         \
+               goto out_delete;                                           \
+       }                                                                  \
+       if (fda->entries[_idx].events != (_revents)) {                     \
+               pr_debug("\n%d: fda->entries[%d].revents(%d) != %d!",      \
+                        __LINE__, _idx, fda->entries[_idx].fd, _revents); \
+               goto out_delete;                                           \
+       }
+
+#define FDA_ADD(_idx, _fd, _revents, _nr)                                 \
+       if (fdarray__add(fda, _fd, _revents) < 0) {                        \
+               pr_debug("\n%d: fdarray__add(fda, %d, %d) failed!",        \
+                        __LINE__,_fd, _revents);                          \
+               goto out_delete;                                           \
+       }                                                                  \
+       if (fda->nr != _nr) {                                              \
+               pr_debug("\n%d: fdarray__add(fda, %d, %d)=%d != %d",       \
+                        __LINE__,_fd, _revents, fda->nr, _nr);            \
+               goto out_delete;                                           \
+       }                                                                  \
+       FDA_CHECK(_idx, _fd, _revents)
+
+       FDA_ADD(0, 1, POLLIN, 1);
+       FDA_ADD(1, 2, POLLERR, 2);
+
+       fdarray__fprintf_prefix(fda, "before growing array", stderr);
+
+       FDA_ADD(2, 35, POLLHUP, 3);
+
+       if (fda->entries == NULL) {
+               pr_debug("\nfdarray__add(fda, 35, POLLHUP) should have allocated fda->pollfd!");
+               goto out_delete;
+       }
+
+       fdarray__fprintf_prefix(fda, "after 3rd add", stderr);
+
+       FDA_ADD(3, 88, POLLIN | POLLOUT, 4);
+
+       fdarray__fprintf_prefix(fda, "after 4th add", stderr);
+
+       FDA_CHECK(0, 1, POLLIN);
+       FDA_CHECK(1, 2, POLLERR);
+       FDA_CHECK(2, 35, POLLHUP);
+       FDA_CHECK(3, 88, POLLIN | POLLOUT);
+
+#undef FDA_ADD
+#undef FDA_CHECK
+
+       pr_debug("\n");
+
+       err = 0;
+out_delete:
+       fdarray__delete(fda);
+out:
+       return err;
+}