mirror of https://gitee.com/openkylin/linux.git
6ce711f275
About 20% of the IDR users in the kernel want the allocated IDs to start at 1. The implementation currently searches all the way down the left hand side of the tree, finds no free ID other than ID 0, walks all the way back up, and then all the way down again. This patch 'rebases' the ID so we fill the entire radix tree, rather than leave a gap at 0. Chris Wilson says: "I did the quick hack of allocating index 0 of the idr and that eradicated idr_get_free() from being at the top of the profiles for the many-object stress tests. This improvement will be much appreciated." Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> |
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| .. | ||
| generated | ||
| linux | ||
| .gitignore | ||
| Makefile | ||
| benchmark.c | ||
| idr-test.c | ||
| iteration_check.c | ||
| linux.c | ||
| main.c | ||
| multiorder.c | ||
| regression.h | ||
| regression1.c | ||
| regression2.c | ||
| regression3.c | ||
| tag_check.c | ||
| test.c | ||
| test.h | ||