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Move waitq to make sure it's entirely in the same cache line, and move ipc_complete to reduce padding. struct snd_sof_ipc_msg { void * msg_data; /* 0 8 */ void * reply_data; /* 8 8 */ size_t msg_size; /* 16 8 */ size_t reply_size; /* 24 8 */ int reply_error; /* 32 4 */ bool ipc_complete; /* 36 1 */ /* XXX 3 bytes hole, try to pack */ wait_queue_head_t waitq; /* 40 88 */ /* --- cacheline 2 boundary (128 bytes) --- */ void * rx_data; /* 128 8 */ /* size: 136, cachelines: 3, members: 8 */ /* sum members: 133, holes: 1, sum holes: 3 */ /* last cacheline: 8 bytes */ }; Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Link: https://patch.msgid.link/20240802124609.188954-4-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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arch | ||
block | ||
certs | ||
crypto | ||
Documentation | ||
drivers | ||
fs | ||
include | ||
init | ||
io_uring | ||
ipc | ||
kernel | ||
lib | ||
LICENSES | ||
mm | ||
net | ||
rust | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.clang-format | ||
.cocciconfig | ||
.editorconfig | ||
.get_maintainer.ignore | ||
.gitattributes | ||
.gitignore | ||
.mailmap | ||
.rustfmt.toml | ||
COPYING | ||
CREDITS | ||
Kbuild | ||
Kconfig | ||
MAINTAINERS | ||
Makefile | ||
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.