Re: [PATCH v6 09/12] x86/sgx: Restructure top-level EPC reclaim function

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On Thu, 04 Jan 2024 13:27:07 -0600, Dave Hansen <dave.hansen@xxxxxxxxx> wrote:

On 1/4/24 11:11, Haitao Huang wrote:
If those are OK with users and also make it acceptable for merge
quickly, I'm happy to do that 🙂

How about we put some actual numbers behind this?  How much complexity
are we talking about here?  What's the diffstat for the utterly
bare-bones implementation and what does it cost on top of that to do the
per-cgroup reclaim?


For bare-bone:

 arch/x86/Kconfig                     |  13 ++++++++++++
 arch/x86/kernel/cpu/sgx/Makefile     |   1 +
arch/x86/kernel/cpu/sgx/epc_cgroup.c | 104 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ arch/x86/kernel/cpu/sgx/epc_cgroup.h | 39 +++++++++++++++++++++++++++++++++++ arch/x86/kernel/cpu/sgx/main.c | 41 ++++++++++++++++++++++++++++++++++++
 arch/x86/kernel/cpu/sgx/sgx.h        |   5 +++++
include/linux/misc_cgroup.h | 42 +++++++++++++++++++++++++++++++++++++ kernel/cgroup/misc.c | 52 +++++++++++++++++++++++++++++++---------------
 8 files changed, 281 insertions(+), 16 deletions(-)

Additional for per-cgroup reclaim:

 arch/x86/kernel/cpu/sgx/encl.c       |  41 +++++++++--------
 arch/x86/kernel/cpu/sgx/encl.h       |   3 +-
arch/x86/kernel/cpu/sgx/epc_cgroup.c | 224 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 arch/x86/kernel/cpu/sgx/epc_cgroup.h |  18 ++++++--
arch/x86/kernel/cpu/sgx/main.c | 226 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---------------------------------- arch/x86/kernel/cpu/sgx/sgx.h | 85 +++++++++++++++++++++++++++++++++--
 6 files changed, 480 insertions(+), 117 deletions(-)


Thanks
Haitao





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