On Mon, Jun 19, 2017 at 07:28:28PM -0400, Dennis Zhou wrote: > There is limited visibility into the percpu memory allocator making it hard to > understand usage patterns. Without these concrete numbers, we are left to > conjecture about the correctness of percpu memory patterns and usage. > Additionally, there is no mechanism to review the correctness/efficiency of the > current implementation. > > This patchset address the following: > - Adds basic statistics to reason about the number of allocations over the > lifetime, allocation sizes, and fragmentation. > - Adds tracepoints to enable better debug capabilities as well as the ability > to review allocation requests and corresponding decisions. > > This patchiest contains the following four patches: > 0001-percpu-add-missing-lockdep_assert_held-to-func-pcpu_.patch > 0002-percpu-migrate-percpu-data-structures-to-internal-he.patch > 0003-percpu-expose-statistics-about-percpu-memory-via-deb.patch > 0004-percpu-add-tracepoint-support-for-percpu-memory.patch Applied to percpu/for-4.13. I had to update 0002 because of the recent __ro_after_init changes. Can you please see whether I made any mistakes while updating it? git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git for-4.13 Thanks. -- tejun -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
