On Fri, Dec 02, 2022 at 10:36:48AM -0800, Kristen Carlson Accardi wrote:
> From: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
>
> Expose the top-level reclaim function as sgx_reclaim_epc_pages() for use
> by the upcoming EPC cgroup, which will initiate reclaim to enforce
> changes to high/max limits.
>
> Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
> Signed-off-by: Kristen Carlson Accardi <kristen@xxxxxxxxxxxxxxx>
> Cc: Sean Christopherson <seanjc@xxxxxxxxxx>
> ---
> arch/x86/kernel/cpu/sgx/main.c | 7 ++++---
> arch/x86/kernel/cpu/sgx/sgx.h | 1 +
> 2 files changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/arch/x86/kernel/cpu/sgx/main.c b/arch/x86/kernel/cpu/sgx/main.c
> index 96399e2016a8..c947b4ae06f3 100644
> --- a/arch/x86/kernel/cpu/sgx/main.c
> +++ b/arch/x86/kernel/cpu/sgx/main.c
> @@ -281,6 +281,7 @@ static void sgx_reclaimer_write(struct sgx_epc_page *epc_page,
>
> /**
> * sgx_reclaim_pages() - Reclaim EPC pages from the consumers
> + * sgx_reclaim_epc_pages() - Reclaim EPC pages from the consumers
> * @nr_to_scan: Number of EPC pages to scan for reclaim
> * @ignore_age: Reclaim a page even if it is young
> *
> @@ -385,7 +386,7 @@ static int __sgx_reclaim_pages(int nr_to_scan, bool ignore_age)
> return i;
> }
>
> -static int sgx_reclaim_pages(int nr_to_scan, bool ignore_age)
> +int sgx_reclaim_epc_pages(int nr_to_scan, bool ignore_age)
> {
> int ret;
>
> @@ -441,7 +442,7 @@ static int ksgxd(void *p)
> sgx_should_reclaim(SGX_NR_HIGH_PAGES));
>
> if (sgx_should_reclaim(SGX_NR_HIGH_PAGES))
> - sgx_reclaim_pages(SGX_NR_TO_SCAN, false);
> + sgx_reclaim_epc_pages(SGX_NR_TO_SCAN, false);
> }
>
> return 0;
> @@ -624,7 +625,7 @@ struct sgx_epc_page *sgx_alloc_epc_page(void *owner, bool reclaim)
> break;
> }
>
> - sgx_reclaim_pages(SGX_NR_TO_SCAN, false);
> + sgx_reclaim_epc_pages(SGX_NR_TO_SCAN, false);
> }
>
> if (sgx_should_reclaim(SGX_NR_LOW_PAGES))
> diff --git a/arch/x86/kernel/cpu/sgx/sgx.h b/arch/x86/kernel/cpu/sgx/sgx.h
> index ec8d567cd975..ce859331ddf5 100644
> --- a/arch/x86/kernel/cpu/sgx/sgx.h
> +++ b/arch/x86/kernel/cpu/sgx/sgx.h
> @@ -206,6 +206,7 @@ void sgx_reclaim_direct(void);
> void sgx_record_epc_page(struct sgx_epc_page *page, unsigned long flags);
> int sgx_drop_epc_page(struct sgx_epc_page *page);
> struct sgx_epc_page *sgx_alloc_epc_page(void *owner, bool reclaim);
> +int sgx_reclaim_epc_pages(int nr_to_scan, bool ignore_age);
>
> void sgx_ipi_cb(void *info);
>
> --
> 2.38.1
>
Unless, there is a risk of name collision, I think this rename is
just adding unnecessary convolution to the patch set.
I would revert the rename part, and just export.
BR, Jarkko
