io_uring/net: fail zc sendmsg when unsupported by socket - linux-dev - Linux kernel development work

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author	Pavel Begunkov <asml.silence@gmail.com>	2022-10-21 11:16:41 +0100
committer	Jens Axboe <axboe@kernel.dk>	2022-10-22 08:43:03 -0600
commit	cc767e7c6913f770741d9fad1efa4957c2623744 (patch)
tree	bc25e7e05dfb6da9bdb09a9b1b3481eb9de59b57 /arch/mips/power/ssh:/git@git.zx2c4.com
parent	io_uring/net: fail zc send when unsupported by socket (diff)

io_uring/net: fail zc sendmsg when unsupported by socket

The previous patch fails zerocopy send requests for protocols that don't support it, do the same for zerocopy sendmsg. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/0854e7bb4c3d810a48ec8b5853e2f61af36a0467.1666346426.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>

Diffstat (limited to 'arch/mips/power/ssh:/git@git.zx2c4.com')

0 files changed, 0 insertions, 0 deletions

/* * Common interrupt code for 32 and 64 bit */ #include <linux/cpu.h> #include <linux/interrupt.h> #include <linux/kernel_stat.h> #include <linux/seq_file.h> #include <linux/smp.h> #include <asm/apic.h> #include <asm/io_apic.h> #include <asm/irq.h> atomic_t irq_err_count; /* * 'what should we do if we get a hw irq event on an illegal vector'. * each architecture has to answer this themselves. */ void ack_bad_irq(unsigned int irq) { printk(KERN_ERR "unexpected IRQ trap at vector %02x\n", irq); #ifdef CONFIG_X86_LOCAL_APIC /* * Currently unexpected vectors happen only on SMP and APIC. * We _must_ ack these because every local APIC has only N * irq slots per priority level, and a 'hanging, unacked' IRQ * holds up an irq slot - in excessive cases (when multiple * unexpected vectors occur) that might lock up the APIC * completely. * But only ack when the APIC is enabled -AK */ if (cpu_has_apic) ack_APIC_irq(); #endif } #ifdef CONFIG_X86_32 # define irq_stats(x) (&per_cpu(irq_stat, x)) #else # define irq_stats(x) cpu_pda(x) #endif /* * /proc/interrupts printing: */ static int show_other_interrupts(struct seq_file *p) { int j; seq_printf(p, "NMI: "); for_each_online_cpu(j) seq_printf(p, "%10u ", irq_stats(j)->__nmi_count); seq_printf(p, " Non-maskable interrupts\n"); #ifdef CONFIG_X86_LOCAL_APIC seq_printf(p, "LOC: "); for_each_online_cpu(j) seq_printf(p, "%10u ", irq_stats(j)->apic_timer_irqs); seq_printf(p, " Local timer interrupts\n"); #endif #ifdef CONFIG_SMP seq_printf(p, "RES: "); for_each_online_cpu(j) seq_printf(p, "%10u ", irq_stats(j)->irq_resched_count); seq_printf(p, " Rescheduling interrupts\n"); seq_printf(p, "CAL: "); for_each_online_cpu(j) seq_printf(p, "%10u ", irq_stats(j)->irq_call_count); seq_printf(p, " Function call interrupts\n"); seq_printf(p, "TLB: "); for_each_online_cpu(j) seq_printf(p, "%10u ", irq_stats(j)->irq_tlb_count); seq_printf(p, " TLB shootdowns\n"); #endif #ifdef CONFIG_X86_MCE seq_printf(p, "TRM: "); for_each_online_cpu(j) seq_printf(p, "%10u ", irq_stats(j)->irq_thermal_count); seq_printf(p, " Thermal event interrupts\n"); # ifdef CONFIG_X86_64 seq_printf(p, "THR: "); for_each_online_cpu(j) seq_printf(p, "%10u ", irq_stats(j)->irq_threshold_count); seq_printf(p, " Threshold APIC interrupts\n"); # endif #endif #ifdef CONFIG_X86_LOCAL_APIC seq_printf(p, "SPU: "); for_each_online_cpu(j) seq_printf(p, "%10u ", irq_stats(j)->irq_spurious_count); seq_printf(p, " Spurious interrupts\n"); #endif seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count)); #if defined(CONFIG_X86_IO_APIC) seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count)); #endif return 0; } int show_interrupts(struct seq_file *p, void *v) { unsigned long flags, any_count = 0; int i = *(loff_t *) v, j; struct irqaction *action; struct irq_desc *desc; if (i > nr_irqs) return 0; if (i == nr_irqs) return show_other_interrupts(p); /* print header */ if (i == 0) { seq_printf(p, " "); for_each_online_cpu(j) seq_printf(p, "CPU%-8d", j); seq_putc(p, '\n'); } desc = irq_to_desc(i); if (!desc) return 0; spin_lock_irqsave(&desc->lock, flags); #ifndef CONFIG_SMP any_count = kstat_irqs(i); #else for_each_online_cpu(j) any_count |= kstat_irqs_cpu(i, j); #endif action = desc->action; if (!action && !any_count) goto out; seq_printf(p, "%3d: ", i); #ifndef CONFIG_SMP seq_printf(p, "%10u ", kstat_irqs(i)); #else for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(i, j)); #endif seq_printf(p, " %8s", desc->chip->name); seq_printf(p, "-%-8s", desc->name); if (action) { seq_printf(p, " %s", action->name); while ((action = action->next) != NULL) seq_printf(p, ", %s", action->name); } seq_putc(p, '\n'); out: spin_unlock_irqrestore(&desc->lock, flags); return 0; } /* * /proc/stat helpers */ u64 arch_irq_stat_cpu(unsigned int cpu) { u64 sum = irq_stats(cpu)->__nmi_count; #ifdef CONFIG_X86_LOCAL_APIC sum += irq_stats(cpu)->apic_timer_irqs; #endif #ifdef CONFIG_SMP sum += irq_stats(cpu)->irq_resched_count; sum += irq_stats(cpu)->irq_call_count; sum += irq_stats(cpu)->irq_tlb_count; #endif #ifdef CONFIG_X86_MCE sum += irq_stats(cpu)->irq_thermal_count; # ifdef CONFIG_X86_64 sum += irq_stats(cpu)->irq_threshold_count; #endif #endif #ifdef CONFIG_X86_LOCAL_APIC sum += irq_stats(cpu)->irq_spurious_count; #endif return sum; } u64 arch_irq_stat(void) { u64 sum = atomic_read(&irq_err_count); #ifdef CONFIG_X86_IO_APIC sum += atomic_read(&irq_mis_count); #endif return sum; } EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq);


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