diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/cpufreq.h | 3 | ||||
| -rw-r--r-- | include/linux/iio/frequency/adf4350.h | 2 | ||||
| -rw-r--r-- | include/linux/ksm.h | 8 | ||||
| -rw-r--r-- | include/linux/mm.h | 22 | ||||
| -rw-r--r-- | include/linux/rseq.h | 11 | ||||
| -rw-r--r-- | include/linux/sunrpc/svc.h | 2 | ||||
| -rw-r--r-- | include/linux/sunrpc/svc_xprt.h | 19 |
7 files changed, 52 insertions, 15 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index a604c54ae44d..794e38320f56 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -32,6 +32,9 @@ */ #define CPUFREQ_ETERNAL (-1) + +#define CPUFREQ_DEFAULT_TRANSITION_LATENCY_NS NSEC_PER_MSEC + #define CPUFREQ_NAME_LEN 16 /* Print length for names. Extra 1 space for accommodating '\n' in prints */ #define CPUFREQ_NAME_PLEN (CPUFREQ_NAME_LEN + 1) diff --git a/include/linux/iio/frequency/adf4350.h b/include/linux/iio/frequency/adf4350.h index de45cf2ee1e4..ce2086f97e3f 100644 --- a/include/linux/iio/frequency/adf4350.h +++ b/include/linux/iio/frequency/adf4350.h @@ -51,7 +51,7 @@ /* REG3 Bit Definitions */ #define ADF4350_REG3_12BIT_CLKDIV(x) ((x) << 3) -#define ADF4350_REG3_12BIT_CLKDIV_MODE(x) ((x) << 16) +#define ADF4350_REG3_12BIT_CLKDIV_MODE(x) ((x) << 15) #define ADF4350_REG3_12BIT_CSR_EN (1 << 18) #define ADF4351_REG3_CHARGE_CANCELLATION_EN (1 << 21) #define ADF4351_REG3_ANTI_BACKLASH_3ns_EN (1 << 22) diff --git a/include/linux/ksm.h b/include/linux/ksm.h index ec9c05044d4f..af303641819a 100644 --- a/include/linux/ksm.h +++ b/include/linux/ksm.h @@ -57,8 +57,14 @@ static inline long mm_ksm_zero_pages(struct mm_struct *mm) static inline void ksm_fork(struct mm_struct *mm, struct mm_struct *oldmm) { /* Adding mm to ksm is best effort on fork. */ - if (test_bit(MMF_VM_MERGEABLE, &oldmm->flags)) + if (test_bit(MMF_VM_MERGEABLE, &oldmm->flags)) { + long nr_ksm_zero_pages = atomic_long_read(&mm->ksm_zero_pages); + + mm->ksm_merging_pages = 0; + mm->ksm_rmap_items = 0; + atomic_long_add(nr_ksm_zero_pages, &ksm_zero_pages); __ksm_enter(mm); + } } static inline int ksm_execve(struct mm_struct *mm) diff --git a/include/linux/mm.h b/include/linux/mm.h index 41f5c88bdf3b..f0fa8404957d 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -4318,14 +4318,13 @@ static inline void pgalloc_tag_copy(struct folio *new, struct folio *old) * since this value becomes part of PP_SIGNATURE; meaning we can just use the * space between the PP_SIGNATURE value (without POISON_POINTER_DELTA), and the * lowest bits of POISON_POINTER_DELTA. On arches where POISON_POINTER_DELTA is - * 0, we make sure that we leave the two topmost bits empty, as that guarantees - * we won't mistake a valid kernel pointer for a value we set, regardless of the - * VMSPLIT setting. + * 0, we use the lowest bit of PAGE_OFFSET as the boundary if that value is + * known at compile-time. * - * Altogether, this means that the number of bits available is constrained by - * the size of an unsigned long (at the upper end, subtracting two bits per the - * above), and the definition of PP_SIGNATURE (with or without - * POISON_POINTER_DELTA). + * If the value of PAGE_OFFSET is not known at compile time, or if it is too + * small to leave at least 8 bits available above PP_SIGNATURE, we define the + * number of bits to be 0, which turns off the DMA index tracking altogether + * (see page_pool_register_dma_index()). */ #define PP_DMA_INDEX_SHIFT (1 + __fls(PP_SIGNATURE - POISON_POINTER_DELTA)) #if POISON_POINTER_DELTA > 0 @@ -4334,8 +4333,13 @@ static inline void pgalloc_tag_copy(struct folio *new, struct folio *old) */ #define PP_DMA_INDEX_BITS MIN(32, __ffs(POISON_POINTER_DELTA) - PP_DMA_INDEX_SHIFT) #else -/* Always leave out the topmost two; see above. */ -#define PP_DMA_INDEX_BITS MIN(32, BITS_PER_LONG - PP_DMA_INDEX_SHIFT - 2) +/* Use the lowest bit of PAGE_OFFSET if there's at least 8 bits available; see above */ +#define PP_DMA_INDEX_MIN_OFFSET (1 << (PP_DMA_INDEX_SHIFT + 8)) +#define PP_DMA_INDEX_BITS ((__builtin_constant_p(PAGE_OFFSET) && \ + PAGE_OFFSET >= PP_DMA_INDEX_MIN_OFFSET && \ + !(PAGE_OFFSET & (PP_DMA_INDEX_MIN_OFFSET - 1))) ? \ + MIN(32, __ffs(PAGE_OFFSET) - PP_DMA_INDEX_SHIFT) : 0) + #endif #define PP_DMA_INDEX_MASK GENMASK(PP_DMA_INDEX_BITS + PP_DMA_INDEX_SHIFT - 1, \ diff --git a/include/linux/rseq.h b/include/linux/rseq.h index bc8af3eb5598..1fbeb61babeb 100644 --- a/include/linux/rseq.h +++ b/include/linux/rseq.h @@ -7,6 +7,12 @@ #include <linux/preempt.h> #include <linux/sched.h> +#ifdef CONFIG_MEMBARRIER +# define RSEQ_EVENT_GUARD irq +#else +# define RSEQ_EVENT_GUARD preempt +#endif + /* * Map the event mask on the user-space ABI enum rseq_cs_flags * for direct mask checks. @@ -41,9 +47,8 @@ static inline void rseq_handle_notify_resume(struct ksignal *ksig, static inline void rseq_signal_deliver(struct ksignal *ksig, struct pt_regs *regs) { - preempt_disable(); - __set_bit(RSEQ_EVENT_SIGNAL_BIT, ¤t->rseq_event_mask); - preempt_enable(); + scoped_guard(RSEQ_EVENT_GUARD) + __set_bit(RSEQ_EVENT_SIGNAL_BIT, ¤t->rseq_event_mask); rseq_handle_notify_resume(ksig, regs); } diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index e68fecf6eab5..617ebfff2f30 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -81,7 +81,7 @@ struct svc_serv { unsigned int sv_xdrsize; /* XDR buffer size */ struct list_head sv_permsocks; /* all permanent sockets */ struct list_head sv_tempsocks; /* all temporary sockets */ - int sv_tmpcnt; /* count of temporary sockets */ + int sv_tmpcnt; /* count of temporary "valid" sockets */ struct timer_list sv_temptimer; /* timer for aging temporary sockets */ char * sv_name; /* service name */ diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h index 0981e35a9fed..72d1a08f4828 100644 --- a/include/linux/sunrpc/svc_xprt.h +++ b/include/linux/sunrpc/svc_xprt.h @@ -99,8 +99,27 @@ enum { XPT_HANDSHAKE, /* xprt requests a handshake */ XPT_TLS_SESSION, /* transport-layer security established */ XPT_PEER_AUTH, /* peer has been authenticated */ + XPT_PEER_VALID, /* peer has presented a filehandle that + * it has access to. It is NOT counted + * in ->sv_tmpcnt. + */ + XPT_RPCB_UNREG, /* transport that needs unregistering + * with rpcbind (TCP, UDP) on destroy + */ }; +static inline void svc_xprt_set_valid(struct svc_xprt *xpt) +{ + if (test_bit(XPT_TEMP, &xpt->xpt_flags) && + !test_and_set_bit(XPT_PEER_VALID, &xpt->xpt_flags)) { + struct svc_serv *serv = xpt->xpt_server; + + spin_lock(&serv->sv_lock); + serv->sv_tmpcnt -= 1; + spin_unlock(&serv->sv_lock); + } +} + static inline void unregister_xpt_user(struct svc_xprt *xpt, struct svc_xpt_user *u) { spin_lock(&xpt->xpt_lock); |