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ad4d13f184
Reorder its members to fill the current padding hole, reducing the
struct size from 32 to 24.
This struct appears multiple times inside struct anv_image and its
members, so this change brings down sizeof(struct anv_image) from
1744 to 1600.
We went from:
struct anv_image_memory_range {
enum anv_image_memory_binding binding; /* 0 4 */
/* XXX 4 bytes hole, try to pack */
uint64_t offset; /* 8 8 */
uint64_t size; /* 16 8 */
uint32_t alignment; /* 24 4 */
/* size: 32, cachelines: 1, members: 4 */
/* sum members: 24, holes: 1, sum holes: 4 */
/* padding: 4 */
/* last cacheline: 32 bytes */
};
to:
struct anv_image_memory_range {
enum anv_image_memory_binding binding; /* 0 4 */
uint32_t alignment; /* 4 4 */
uint64_t size; /* 8 8 */
uint64_t offset; /* 16 8 */
/* size: 24, cachelines: 1, members: 4 */
/* last cacheline: 24 bytes */
};
Considering we can have tens of thousands of anv_image structs
allocated at the same time on gaming workloads, this can save us a few
MB of memory. It ain't much but it's honest work.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28700>
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`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library ====================================================== Source ------ This repository lives at https://gitlab.freedesktop.org/mesa/mesa. Other repositories are likely forks, and code found there is not supported. Build & install --------------- You can find more information in our documentation (`docs/install.rst <https://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://mesa3d.org/meson.html>`_): .. code-block:: sh $ mkdir build $ cd build $ meson .. $ sudo ninja install Support ------- Many Mesa devs hang on IRC; if you're not sure which channel is appropriate, you should ask your question on `OFTC's #dri-devel <irc://irc.oftc.net/dri-devel>`_, someone will redirect you if necessary. Remember that not everyone is in the same timezone as you, so it might take a while before someone qualified sees your question. To figure out who you're talking to, or which nick to ping for your question, check out `Who's Who on IRC <https://dri.freedesktop.org/wiki/WhosWho/>`_. The next best option is to ask your question in an email to the mailing lists: `mesa-dev\@lists.freedesktop.org <https://lists.freedesktop.org/mailman/listinfo/mesa-dev>`_ Bug reports ----------- If you think something isn't working properly, please file a bug report (`docs/bugs.rst <https://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.