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<wiewo> hi, does anyone know if there is a way to boot a Galaxy S3/Trats2/I9300 from the sd card? I want to do this in order to safely test U-Boot without having to write it to the internal storage.
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<LiquidAcid> anyone can tell me what this is suppose to mean?
<LiquidAcid> [14391.481188] alloc_contig_range: [b6600, ba600) PFNs busy
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<krzk> LiquidAcid: probably it means that pages - chosen for contigous block (CMA?) are used.
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<krzk> LiquidAcid: they could be used because of being reserved for other driver...
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<LiquidAcid> krzk, hmm, that happened during some 'while true; do exynos_fimg2d_perf -i8; done'
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<LiquidAcid> i wonder if there's some memory corruption going on
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<krzk> LiquidAcid: rather lack of free contigous memory so the usual reserved block for CMA is occupied with something else
<LiquidAcid> krzk, so more like, some memory deallocation is missing
<LiquidAcid> this only happened after like 2hrs, so it's probalby not a lot of memory
<krzk> LiquidAcid: could be, indeed. on the other hand this checks for entire block. Many workloads, repetitve tasks especially, fragment the memory so long block of free memory dissappear
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<LiquidAcid> krzk, however the test was the only thing running on the DRM device
<LiquidAcid> so if all resources are properly freed on close(), something tells me that this shouldn't happen
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<krzk> LiquidAcid: I don't know what the test does... but for example one way of fragmenting the memory is allocating of large free contigous blocks, e.g. order-10. They have to be contigous to utilize the biggest free blocks. Even when the memory is freed
<krzk> some versions of kernel (I think still...) did not bring back these blocks to CMA memory and did not compact it.
<krzk> Thus number of free blocks of order-10 or more was decreasing, even though free memory remained ok (total).
<LiquidAcid> krzk, the largest allocation in kernel should be the bo (https://cgit.freedesktop.org/mesa/drm/tree/tests/exynos/exynos_fimg2d_perf.c#n301)
<krzk> LiquidAcid: check the cat /proc/buddyinfo
<krzk> over time
<krzk> or better: /proc/pagetypeinfo
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<krzk> it shows usage of memory per orders of allocation
<krzk> LiquidAcid: so the largest is (bufw * bufh * 4)... which is for example for buffer 1024x768 = 3 MB
<krzk> this would be order-10 allocation.
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<LiquidAcid> krzk, sry, fdo seems to be a bit upset today :)
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