[igt-dev] [PATCH igt 1/3] lib/igt_debugfs: Add helper for writing debugfs files
From: Rob Clark <hidden>
Date: 2021-11-09 18:04:09
Also in:
linux-arm-msm
Subsystem:
library code, the rest · Maintainers:
Andrew Morton, Linus Torvalds
From: Rob Clark <redacted> Signed-off-by: Rob Clark <redacted> --- lib/igt_debugfs.c | 16 ++++++++++++++++ lib/igt_debugfs.h | 12 ++++++++++++ 2 files changed, 28 insertions(+)
diff --git a/lib/igt_debugfs.c b/lib/igt_debugfs.c
index a5bb95ca..39431068 100644
--- a/lib/igt_debugfs.c
+++ b/lib/igt_debugfs.c@@ -351,6 +351,22 @@ void __igt_debugfs_read(int fd, const char *filename, char *buf, int size) close(dir); } +/** + * __igt_debugfs_write: + * @filename: file name + * @buf: buffer to be written to the debugfs file + * @size: size of the buffer + * + * This function opens the debugfs file, writes it, then closes the file. + */ +void __igt_debugfs_write(int fd, const char *filename, const char *buf, int size) +{ + int dir = igt_debugfs_dir(fd); + + igt_sysfs_write(dir, filename, buf, size); + close(dir); +} + /** * igt_debugfs_search: * @filename: file name
diff --git a/lib/igt_debugfs.h b/lib/igt_debugfs.h
index d43ba6c6..249eb56a 100644
--- a/lib/igt_debugfs.h
+++ b/lib/igt_debugfs.h@@ -40,6 +40,7 @@ int igt_debugfs_pipe_dir(int device, int pipe, int mode); int igt_debugfs_open(int fd, const char *filename, int mode); void __igt_debugfs_read(int fd, const char *filename, char *buf, int size); +void __igt_debugfs_write(int fd, const char *filename, const char *buf, int size); int igt_debugfs_simple_read(int dir, const char *filename, char *buf, int size); bool igt_debugfs_search(int fd, const char *filename, const char *substring);
@@ -54,6 +55,17 @@ bool igt_debugfs_search(int fd, const char *filename, const char *substring); #define igt_debugfs_read(fd, filename, buf) \ __igt_debugfs_read(fd, (filename), (buf), sizeof(buf)) +/** + * igt_debugfs_write: + * @filename: name of the debugfs file + * @buf: buffer to be written to the debugfs file + * + * This is just a convenience wrapper for __igt_debugfs_read. See its + * documentation. + */ +#define igt_debugfs_write(fd, filename, buf) \ + __igt_debugfs_write(fd, (filename), (buf), sizeof(buf)) + /* * Pipe CRC */
--
2.31.1