Cache buffers to stop heap fragmentation

[cliffordjefferies]

This changes removes malloc/free from runtime processing. This stops heap fragmentation and improves performance.
This is only for SPI. A similar change should be made to SDIO

[mantriyogesh]

Hello @cliffordjefferies,

Thank you for this terrific improvement.
We would review and get your changes pulled.
Could we please know if you are working on SDIO change as well? If so, we will wait for it.
If not, we will try to propagate changes to SDIO.

[cliffordjefferies]

We are only looking at SPI here so I did not look at SDIO. Hopefully, the changes required will following this closely.

…

________________________________ From: mantriyogesh ***@***.***> Sent: Thursday, 3 February 2022 4:22 PM To: espressif/esp-hosted ***@***.***> Cc: Clifford Jefferies ***@***.***>; Mention ***@***.***> Subject: Re: [espressif/esp-hosted] Cache buffers to stop heap fragmentation (PR #99) CAUTION This email originated from outside of Casa Systems. Do not click links or open attachments unless you recognize the sender and know the content is safe. Hello @cliffordjefferies<https://avanan.url-protection.com/v1/url?o=https%3A//github.com/cliffordjefferies&g=ZTM0N2VmM2QzYjMzODRlMg==&h=ODNiNDBhZGZmMThmYWZmMmE1MmRlNTMxNGFhZGM0YWZhODZlY2QxMTU3YjA5OTdkZTVlY2JhZTg0MzgwZTZhYw==&p=YXAzOmNhc2FzeXN0ZW1zOmE6bzo1NjRlODY4NjVkZTAzM2QyMTUyY2Y3YjUzNDE3NjQxYjp2MTpoOk4=>, Thank you for this terrific improvement. We would review and get your changes pulled. Could we please know if you are working on SDIO change as well? If so, we will wait for it. If not, we will try to propagate changes to SDIO. — Reply to this email directly, view it on GitHub<https://avanan.url-protection.com/v1/url?o=https%3A//github.com/espressif/esp-hosted/pull/99%23issuecomment-1028614448&g=OGExODI1NGIyZjU4NzkxNw==&h=NWIzODAwZWRhYTNmMzE3YWNkNzM2ZjYwMWE4ZjFhMGU4MmVmNWY1YzE5ZjMwYzg0YTczYTU4NjZkMTJiZjFhNg==&p=YXAzOmNhc2FzeXN0ZW1zOmE6bzo1NjRlODY4NjVkZTAzM2QyMTUyY2Y3YjUzNDE3NjQxYjp2MTpoOk4=>, or unsubscribe<https://avanan.url-protection.com/v1/url?o=https%3A//github.com/notifications/unsubscribe-auth/AHHHWAW7BFJ45R3TQOG57D3UZIGK7ANCNFSM5NN4SM7A&g=MGY0NWFhYzcwNzY1NGJkOA==&h=YzU1MGE1MmUzNjNkM2IxYWUwMjFhMzU5MDI4NjVmMTFhMmZjNGZhMGE2NWVjZDlmMDM4MjcwNzZjNTk1NGRkOA==&p=YXAzOmNhc2FzeXN0ZW1zOmE6bzo1NjRlODY4NjVkZTAzM2QyMTUyY2Y3YjUzNDE3NjQxYjp2MTpoOk4=>. Triage notifications on the go with GitHub Mobile for iOS<https://avanan.url-protection.com/v1/url?o=https%3A//apps.apple.com/app/apple-store/id1477376905%3Fct%3Dnotification-email%26amp%3Bmt%3D8%26amp%3Bpt%3D524675&g=ZDEzZTg0NzM2OWQ1Y2IwMQ==&h=MGMzNjFmNGQ4NDNmNDEzMmNlNTJmOGU4N2YwM2IxZDYxMGRmOGJkYTllMmQwZmRmMjE4ZDEzNTNjNmIxMGU4OQ==&p=YXAzOmNhc2FzeXN0ZW1zOmE6bzo1NjRlODY4NjVkZTAzM2QyMTUyY2Y3YjUzNDE3NjQxYjp2MTpoOk4=> or Android<https://avanan.url-protection.com/v1/url?o=https%3A//play.google.com/store/apps/details%3Fid%3Dcom.github.android%26amp%3Breferrer%3Dutm_campaign%253Dnotification-email%2526utm_medium%253Demail%2526utm_source%253Dgithub&g=NGVhOTM4NDMwYjA2ZjZhZQ==&h=MDc3ZWQ5ZTc2NWQxN2E0NmE4MjE4MTdkZGU5MjE0ZDE0ZWQ3ODgyY2E1MzFjODY0YjM1OTFlYTVlYjQ0YzE0NQ==&p=YXAzOmNhc2FzeXN0ZW1z %20OmE6bzo1NjRlODY4NjVkZTAzM2QyMTUyY2Y3YjUzNDE3NjQxYjp2MTpoOk4=>. You are receiving this because you were mentioned.Message ID: ***@***.***>

[mantriyogesh]

Sure we will take care. We would propagate changes into SDIO.

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