diff options
Diffstat (limited to 'tools/perf/lib/lib.c')
-rw-r--r-- | tools/perf/lib/lib.c | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/tools/perf/lib/lib.c b/tools/perf/lib/lib.c deleted file mode 100644 index 18658931fc71..000000000000 --- a/tools/perf/lib/lib.c +++ /dev/null @@ -1,48 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <unistd.h> -#include <stdbool.h> -#include <errno.h> -#include <linux/kernel.h> -#include <internal/lib.h> - -unsigned int page_size; - -static ssize_t ion(bool is_read, int fd, void *buf, size_t n) -{ - void *buf_start = buf; - size_t left = n; - - while (left) { - /* buf must be treated as const if !is_read. */ - ssize_t ret = is_read ? read(fd, buf, left) : - write(fd, buf, left); - - if (ret < 0 && errno == EINTR) - continue; - if (ret <= 0) - return ret; - - left -= ret; - buf += ret; - } - - BUG_ON((size_t)(buf - buf_start) != n); - return n; -} - -/* - * Read exactly 'n' bytes or return an error. - */ -ssize_t readn(int fd, void *buf, size_t n) -{ - return ion(true, fd, buf, n); -} - -/* - * Write exactly 'n' bytes or return an error. - */ -ssize_t writen(int fd, const void *buf, size_t n) -{ - /* ion does not modify buf. */ - return ion(false, fd, (void *)buf, n); -} |