8629eea901
Now that snd_pcm_sync_ptr_get_user() and snd_pcm_sync_ptr_put_user()
are converted to user_access_begin/user_access_end(),
snd_pcm_sync_ptr_get_user() is more efficient than a raw get_user()
followed by a copy_from_user(). And because copy_{to/from}_user() are
generic functions focussed on transfer of big data blocks to/from user,
snd_pcm_sync_ptr_put_user() is also more efficient for small amont of
data.
So use snd_pcm_sync_ptr_get_user() and snd_pcm_sync_ptr_put_user() in
snd_pcm_sync_ptr() too.
snd_pcm_ioctl_sync_ptr_buggy() is left as it is because the conversion
wouldn't be straigh-forward due to the workaround it provides.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/6ce6bc4da498ea7ea2be5f279b374370b1613b13.1749883041.git.christophe.leroy@csgroup.eu
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| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .pylintrc | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
README
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.