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LBJDj5WKtZCjYJvgQ4fZ7SBrLSaz9Hp4xldS+XVTydqvkbEWfbIyZhGKkQEGxlXHYdMWYat1trf b2QwjP+Eadgd/Xb5ZBmz5wDEkruVSN1cp54BNyawOwG8S9N5F44QkZhjy4flv9zAXMHGD0SeHYK vTOA+rbD4040Ybxub7fpRuMTQFBDpj1rcYKF2D07107B7zdX2GpV198Ep64bUEWBCezVbfRW7Zc z6svccn4WgF6bqj9Tw7HtPQTQsbbksEQmei/nOsUlUs7jjcEhMtFxHIfWLwgPEwEcRykuju34QG dRt6BCp+ X-Authority-Analysis: v=2.4 cv=d6P1yQjE c=1 sm=1 tr=0 ts=68c48cb8 b=1 cx=c_pps a=WeWmnZmh0fydH62SvGsd2A==:117 a=WeWmnZmh0fydH62SvGsd2A==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=yJojWOMRYYMA:10 a=GoEa3M9JfhUA:10 a=VwQbUJbxAAAA:8 a=RAQp6ecQrlmDnSzifY4A:9 X-Proofpoint-GUID: 0uAd9vIKn3FvGysLYz_sDkAj9Xn3jSSJ Arnaldo Carvalho de Melo writes: > On Tue, Sep 02, 2025 at 01:08:01AM -0700, Ankur Arora wrote: >> This series adds clearing of contiguous page ranges for hugepages, >> improving on the current page-at-a-time approach in two ways: >> >> - amortizes the per-page setup cost over a larger extent >> >> - when using string instructions, exposes the real region size >> to the processor. >> >> A processor could use a knowledge of the extent to optimize the >> clearing. AMD Zen uarchs, as an example, elide allocation of >> cachelines for regions larger than L3-size. >> >> Demand faulting a 64GB region shows performance improvements: >> >> $ perf bench mem map -p $pg-sz -f demand -s 64GB -l 5 > > So, can I go ahead and pull the tools/perf/ bits into perf-tools-next, > Namhyung already reviewed it, the rest can go thru the relevant > channels, ok? Sounds great. I think I have Namhyung's R-by on all but patches 6 and 9. Thanks! -- ankur