25a1b5b518
Simplify the concurrency delimiter we use for kmod with the semaphore. I had used the kmod strategy to try to implement a similar concurrency delimiter for the kernel_read*() calls from the finit_module() path so to reduce vmalloc() memory pressure. That effort didn't provide yet conclusive results, but one thing that became clear is we can use the suggested alternative solution with semaphores which Linus hinted at instead of using the atomic / wait strategy. I've stress tested this with kmod test 0008: time /data/linux-next/tools/testing/selftests/kmod/kmod.sh -t 0008 And I get only a *slight* delay. That delay however is small, a few seconds for a full test loop run that runs 150 times, for about ~30-40 seconds. The small delay is worth the simplfication IMHO. Reviewed-by: Davidlohr Bueso <dave@stgolabs.net> Reviewed-by: Miroslav Benes <mbenes@suse.cz> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
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| .. | ||
| debug_kmemleak.c | ||
| decompress.c | ||
| internal.h | ||
| kallsyms.c | ||
| Kconfig | ||
| kdb.c | ||
| kmod.c | ||
| livepatch.c | ||
| main.c | ||
| Makefile | ||
| procfs.c | ||
| signing.c | ||
| strict_rwx.c | ||
| sysfs.c | ||
| tracking.c | ||
| tree_lookup.c | ||
| version.c | ||