From 34ff636f322c6d5e4f0a52338fa63a7dff09a495 Mon Sep 17 00:00:00 2001 From: Joel Fernandes Date: Sat, 18 Jul 2026 13:15:36 -0400 Subject: scftorture: Count single_rpc offline failures in statistics output scf_torture_stats_print() aggregates each invoker thread's counters into a local scf_statistics structure before printing, but the n_single_rpc_ofl field is missing from the aggregation loop. As a result, the "single_rpc_ofl" value printed in the statistics line is always zero, even when smp_call_function_single() invocations for the RPC test have failed due to offline CPUs and been counted by the invoker threads. Add the missing accumulation so that the printed value reflects the actual counts. Signed-off-by: Joel Fernandes Signed-off-by: Paul E. McKenney --- include/asm-generic/pgtable_uffd.h | 83 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 include/asm-generic/pgtable_uffd.h (limited to 'include/asm-generic/pgtable_uffd.h') diff --git a/include/asm-generic/pgtable_uffd.h b/include/asm-generic/pgtable_uffd.h new file mode 100644 index 000000000..0d85791ef --- /dev/null +++ b/include/asm-generic/pgtable_uffd.h @@ -0,0 +1,83 @@ +#ifndef _ASM_GENERIC_PGTABLE_UFFD_H +#define _ASM_GENERIC_PGTABLE_UFFD_H + +/* + * Some platforms can customize the uffd-wp bit, making it unavailable + * even if the architecture provides the resource. + * Adding this API allows architectures to add their own checks for the + * devices on which the kernel is running. + * Note: When overriding it, please make sure the + * CONFIG_HAVE_ARCH_USERFAULTFD_WP is part of this macro. + */ +#ifndef pgtable_supports_uffd_wp +#define pgtable_supports_uffd_wp() IS_ENABLED(CONFIG_HAVE_ARCH_USERFAULTFD_WP) +#endif + +static inline bool uffd_supports_wp_marker(void) +{ + return pgtable_supports_uffd_wp() && IS_ENABLED(CONFIG_PTE_MARKER_UFFD_WP); +} + +#ifndef CONFIG_HAVE_ARCH_USERFAULTFD_WP +static __always_inline int pte_uffd_wp(pte_t pte) +{ + return 0; +} + +static __always_inline int pmd_uffd_wp(pmd_t pmd) +{ + return 0; +} + +static __always_inline pte_t pte_mkuffd_wp(pte_t pte) +{ + return pte; +} + +static __always_inline pmd_t pmd_mkuffd_wp(pmd_t pmd) +{ + return pmd; +} + +static __always_inline pte_t pte_clear_uffd_wp(pte_t pte) +{ + return pte; +} + +static __always_inline pmd_t pmd_clear_uffd_wp(pmd_t pmd) +{ + return pmd; +} + +static __always_inline pte_t pte_swp_mkuffd_wp(pte_t pte) +{ + return pte; +} + +static __always_inline int pte_swp_uffd_wp(pte_t pte) +{ + return 0; +} + +static __always_inline pte_t pte_swp_clear_uffd_wp(pte_t pte) +{ + return pte; +} + +static inline pmd_t pmd_swp_mkuffd_wp(pmd_t pmd) +{ + return pmd; +} + +static inline int pmd_swp_uffd_wp(pmd_t pmd) +{ + return 0; +} + +static inline pmd_t pmd_swp_clear_uffd_wp(pmd_t pmd) +{ + return pmd; +} +#endif /* CONFIG_HAVE_ARCH_USERFAULTFD_WP */ + +#endif /* _ASM_GENERIC_PGTABLE_UFFD_H */ -- cgit v1.3.1