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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Browse Source 
Pull s390 updates from Martin Schwidefsky:
 "Mostly cleanups and bug-fixes, with two exceptions.

  The first is lazy flushing of I/O-TLBs for PCI to improve performance,
  the second is software dirty bits in the pmd for the madvise-free
  implementation"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (24 commits)
  s390/locking: Reenable optimistic spinning
  s390/mm: implement dirty bits for large segment table entries
  KVM: s390/mm: Fix page table locking vs. split pmd lock
  s390/dasd: fix camel case
  s390/3215: fix hanging console issue
  s390/irq: improve displayed interrupt order in /proc/interrupts
  s390/seccomp: fix error return for filtered system calls
  s390/pci: introduce lazy IOTLB flushing for DMA unmap
  dasd: fix error recovery for alias devices during format
  dasd: fix list_del corruption during format
  dasd: fix unresponsive device during format
  dasd: use aliases for formatted devices during format
  s390/pci: fix kmsg component
  s390/kdump: Return NOTIFY_OK for all actions other than MEM_GOING_OFFLINE
  s390/watchdog: Fix module name in Kconfig help text
  s390/dasd: replace seq_printf by seq_puts
  s390/dasd: replace pr_warning by pr_warn
  s390/dasd: Move EXPORT_SYMBOL after function/variable
  s390/dasd: remove unnecessary null test before debugfs_remove
  s390/zfcp: use qdio buffer helpers
  ...
This commit is contained in:
Linus Torvalds
2014-08-07 08:41:00 -07:00
parent 33caee3992 36e7fdaa1a
commit ebb067d2f4
26 changed files with 618 additions and 442 deletions
Download Patch File Download Diff File Expand all files Collapse all files

95
arch/s390/kernel/irq.c
View File

@@ -30,6 +30,7 @@ DEFINE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);
EXPORT_PER_CPU_SYMBOL_GPL(irq_stat);
struct irq_class {
int irq;
char *name;
char *desc;
};
@@ -45,9 +46,9 @@ struct irq_class {
* up with having a sum which accounts each interrupt twice.
*/
static const struct irq_class irqclass_main_desc[NR_IRQS_BASE] = {
[EXT_INTERRUPT] = {.name = "EXT"},
[IO_INTERRUPT] = {.name = "I/O"},
[THIN_INTERRUPT] = {.name = "AIO"},
{.irq = EXT_INTERRUPT, .name = "EXT"},
{.irq = IO_INTERRUPT, .name = "I/O"},
{.irq = THIN_INTERRUPT, .name = "AIO"},
};
/*
@@ -56,38 +57,38 @@ static const struct irq_class irqclass_main_desc[NR_IRQS_BASE] = {
* In addition this list contains non external / I/O events like NMIs.
*/
static const struct irq_class irqclass_sub_desc[NR_ARCH_IRQS] = {
[IRQEXT_CLK] = {.name = "CLK", .desc = "[EXT] Clock Comparator"},
[IRQEXT_EXC] = {.name = "EXC", .desc = "[EXT] External Call"},
[IRQEXT_EMS] = {.name = "EMS", .desc = "[EXT] Emergency Signal"},
[IRQEXT_TMR] = {.name = "TMR", .desc = "[EXT] CPU Timer"},
[IRQEXT_TLA] = {.name = "TAL", .desc = "[EXT] Timing Alert"},
[IRQEXT_PFL] = {.name = "PFL", .desc = "[EXT] Pseudo Page Fault"},
[IRQEXT_DSD] = {.name = "DSD", .desc = "[EXT] DASD Diag"},
[IRQEXT_VRT] = {.name = "VRT", .desc = "[EXT] Virtio"},
[IRQEXT_SCP] = {.name = "SCP", .desc = "[EXT] Service Call"},
[IRQEXT_IUC] = {.name = "IUC", .desc = "[EXT] IUCV"},
[IRQEXT_CMS] = {.name = "CMS", .desc = "[EXT] CPU-Measurement: Sampling"},
[IRQEXT_CMC] = {.name = "CMC", .desc = "[EXT] CPU-Measurement: Counter"},
[IRQEXT_CMR] = {.name = "CMR", .desc = "[EXT] CPU-Measurement: RI"},
[IRQIO_CIO] = {.name = "CIO", .desc = "[I/O] Common I/O Layer Interrupt"},
[IRQIO_QAI] = {.name = "QAI", .desc = "[I/O] QDIO Adapter Interrupt"},
[IRQIO_DAS] = {.name = "DAS", .desc = "[I/O] DASD"},
[IRQIO_C15] = {.name = "C15", .desc = "[I/O] 3215"},
[IRQIO_C70] = {.name = "C70", .desc = "[I/O] 3270"},
[IRQIO_TAP] = {.name = "TAP", .desc = "[I/O] Tape"},
[IRQIO_VMR] = {.name = "VMR", .desc = "[I/O] Unit Record Devices"},
[IRQIO_LCS] = {.name = "LCS", .desc = "[I/O] LCS"},
[IRQIO_CLW] = {.name = "CLW", .desc = "[I/O] CLAW"},
[IRQIO_CTC] = {.name = "CTC", .desc = "[I/O] CTC"},
[IRQIO_APB] = {.name = "APB", .desc = "[I/O] AP Bus"},
[IRQIO_ADM] = {.name = "ADM", .desc = "[I/O] EADM Subchannel"},
[IRQIO_CSC] = {.name = "CSC", .desc = "[I/O] CHSC Subchannel"},
[IRQIO_PCI] = {.name = "PCI", .desc = "[I/O] PCI Interrupt" },
[IRQIO_MSI] = {.name = "MSI", .desc = "[I/O] MSI Interrupt" },
[IRQIO_VIR] = {.name = "VIR", .desc = "[I/O] Virtual I/O Devices"},
[IRQIO_VAI] = {.name = "VAI", .desc = "[I/O] Virtual I/O Devices AI"},
[NMI_NMI] = {.name = "NMI", .desc = "[NMI] Machine Check"},
[CPU_RST] = {.name = "RST", .desc = "[CPU] CPU Restart"},
{.irq = IRQEXT_CLK, .name = "CLK", .desc = "[EXT] Clock Comparator"},
{.irq = IRQEXT_EXC, .name = "EXC", .desc = "[EXT] External Call"},
{.irq = IRQEXT_EMS, .name = "EMS", .desc = "[EXT] Emergency Signal"},
{.irq = IRQEXT_TMR, .name = "TMR", .desc = "[EXT] CPU Timer"},
{.irq = IRQEXT_TLA, .name = "TAL", .desc = "[EXT] Timing Alert"},
{.irq = IRQEXT_PFL, .name = "PFL", .desc = "[EXT] Pseudo Page Fault"},
{.irq = IRQEXT_DSD, .name = "DSD", .desc = "[EXT] DASD Diag"},
{.irq = IRQEXT_VRT, .name = "VRT", .desc = "[EXT] Virtio"},
{.irq = IRQEXT_SCP, .name = "SCP", .desc = "[EXT] Service Call"},
{.irq = IRQEXT_IUC, .name = "IUC", .desc = "[EXT] IUCV"},
{.irq = IRQEXT_CMS, .name = "CMS", .desc = "[EXT] CPU-Measurement: Sampling"},
{.irq = IRQEXT_CMC, .name = "CMC", .desc = "[EXT] CPU-Measurement: Counter"},
{.irq = IRQEXT_CMR, .name = "CMR", .desc = "[EXT] CPU-Measurement: RI"},
{.irq = IRQIO_CIO, .name = "CIO", .desc = "[I/O] Common I/O Layer Interrupt"},
{.irq = IRQIO_QAI, .name = "QAI", .desc = "[I/O] QDIO Adapter Interrupt"},
{.irq = IRQIO_DAS, .name = "DAS", .desc = "[I/O] DASD"},
{.irq = IRQIO_C15, .name = "C15", .desc = "[I/O] 3215"},
{.irq = IRQIO_C70, .name = "C70", .desc = "[I/O] 3270"},
{.irq = IRQIO_TAP, .name = "TAP", .desc = "[I/O] Tape"},
{.irq = IRQIO_VMR, .name = "VMR", .desc = "[I/O] Unit Record Devices"},
{.irq = IRQIO_LCS, .name = "LCS", .desc = "[I/O] LCS"},
{.irq = IRQIO_CLW, .name = "CLW", .desc = "[I/O] CLAW"},
{.irq = IRQIO_CTC, .name = "CTC", .desc = "[I/O] CTC"},
{.irq = IRQIO_APB, .name = "APB", .desc = "[I/O] AP Bus"},
{.irq = IRQIO_ADM, .name = "ADM", .desc = "[I/O] EADM Subchannel"},
{.irq = IRQIO_CSC, .name = "CSC", .desc = "[I/O] CHSC Subchannel"},
{.irq = IRQIO_PCI, .name = "PCI", .desc = "[I/O] PCI Interrupt" },
{.irq = IRQIO_MSI, .name = "MSI", .desc = "[I/O] MSI Interrupt" },
{.irq = IRQIO_VIR, .name = "VIR", .desc = "[I/O] Virtual I/O Devices"},
{.irq = IRQIO_VAI, .name = "VAI", .desc = "[I/O] Virtual I/O Devices AI"},
{.irq = NMI_NMI, .name = "NMI", .desc = "[NMI] Machine Check"},
{.irq = CPU_RST, .name = "RST", .desc = "[CPU] CPU Restart"},
};
void __init init_IRQ(void)
@@ -116,33 +117,37 @@ void do_IRQ(struct pt_regs *regs, int irq)
*/
int show_interrupts(struct seq_file *p, void *v)
{
int irq = *(loff_t *) v;
int cpu;
int index = *(loff_t *) v;
int cpu, irq;
get_online_cpus();
if (irq == 0) {
if (index == 0) {
seq_puts(p, " ");
for_each_online_cpu(cpu)
seq_printf(p, "CPU%d ", cpu);
seq_putc(p, '\n');
goto out;
}
if (irq < NR_IRQS) {
if (irq >= NR_IRQS_BASE)
if (index < NR_IRQS) {
if (index >= NR_IRQS_BASE)
goto out;
seq_printf(p, "%s: ", irqclass_main_desc[irq].name);
/* Adjust index to process irqclass_main_desc array entries */
index--;
seq_printf(p, "%s: ", irqclass_main_desc[index].name);
irq = irqclass_main_desc[index].irq;
for_each_online_cpu(cpu)
seq_printf(p, "%10u ", kstat_irqs_cpu(irq, cpu));
seq_putc(p, '\n');
goto out;
}
for (irq = 0; irq < NR_ARCH_IRQS; irq++) {
seq_printf(p, "%s: ", irqclass_sub_desc[irq].name);
for (index = 0; index < NR_ARCH_IRQS; index++) {
seq_printf(p, "%s: ", irqclass_sub_desc[index].name);
irq = irqclass_sub_desc[index].irq;
for_each_online_cpu(cpu)
seq_printf(p, "%10u ",
per_cpu(irq_stat, cpu).irqs[irq]);
if (irqclass_sub_desc[irq].desc)
seq_printf(p, " %s", irqclass_sub_desc[irq].desc);
if (irqclass_sub_desc[index].desc)
seq_printf(p, " %s", irqclass_sub_desc[index].desc);
seq_putc(p, '\n');
}
out:

2
arch/s390/kernel/setup.c
View File

@@ -501,6 +501,8 @@ static int kdump_mem_notifier(struct notifier_block *nb,
{
struct memory_notify *arg = data;
if (action != MEM_GOING_OFFLINE)
return NOTIFY_OK;
if (arg->start_pfn < PFN_DOWN(resource_size(&crashk_res)))
return NOTIFY_BAD;
if (arg->start_pfn > PFN_DOWN(crashk_res.end))