diff options
37 files changed, 306 insertions, 1392 deletions
diff --git a/Documentation/cpu-hotplug.txt b/Documentation/cpu-hotplug.txt index e71bc6cbbc5..57a09f99ecb 100644 --- a/Documentation/cpu-hotplug.txt +++ b/Documentation/cpu-hotplug.txt @@ -46,10 +46,12 @@ maxcpus=n Restrict boot time cpus to n. Say if you have 4 cpus, using maxcpus=2 will only boot 2. You can choose to bring the other cpus later online, read FAQ's for more info. -additional_cpus=n [x86_64, s390 only] use this to limit hotpluggable cpus. - This option sets +additional_cpus*=n Use this to limit hotpluggable cpus. This option sets cpu_possible_map = cpu_present_map + additional_cpus +(*) Option valid only for following architectures +- x86_64, ia64, s390 + ia64 and x86_64 use the number of disabled local apics in ACPI tables MADT to determine the number of potentially hot-pluggable cpus. The implementation should only rely on this to count the #of cpus, but *MUST* not rely on the @@ -57,6 +59,9 @@ apicid values in those tables for disabled apics. In the event BIOS doesnt mark such hot-pluggable cpus as disabled entries, one could use this parameter "additional_cpus=x" to represent those cpus in the cpu_possible_map. +s390 uses the number of cpus it detects at IPL time to also the number of bits +in cpu_possible_map. If it is desired to add additional cpus at a later time +the number should be specified using this option or the possible_cpus option. possible_cpus=n [s390 only] use this to set hotpluggable cpus. This option sets possible_cpus bits in diff --git a/Documentation/filesystems/v9fs.txt b/Documentation/filesystems/v9fs.txt index 4e92feb6b50..24c7a9c41f0 100644 --- a/Documentation/filesystems/v9fs.txt +++ b/Documentation/filesystems/v9fs.txt @@ -57,8 +57,6 @@ OPTIONS port=n port to connect to on the remote server - timeout=n request timeouts (in ms) (default 60000ms) - noextend force legacy mode (no 9P2000.u semantics) uid attempt to mount as a particular uid @@ -74,10 +72,16 @@ OPTIONS RESOURCES ========= -The Linux version of the 9P server, along with some client-side utilities -can be found at http://v9fs.sf.net (along with a CVS repository of the -development branch of this module). There are user and developer mailing -lists here, as well as a bug-tracker. +The Linux version of the 9P server is now maintained under the npfs project +on sourceforge (http://sourceforge.net/projects/npfs). + +There are user and developer mailing lists available through the v9fs project +on sourceforge (http://sourceforge.net/projects/v9fs). + +News and other information is maintained on SWiK (http://swik.net/v9fs). + +Bug reports may be issued through the kernel.org bugzilla +(http://bugzilla.kernel.org) For more information on the Plan 9 Operating System check out http://plan9.bell-labs.com/plan9 diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index 9f11d36a8c1..b0c7ab93dcb 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -16,6 +16,7 @@ before actually making adjustments. Currently, these files might (depending on your configuration) show up in /proc/sys/kernel: +- acpi_video_flags - acct - core_pattern - core_uses_pid @@ -57,6 +58,15 @@ show up in /proc/sys/kernel: ============================================================== +acpi_video_flags: + +flags + +See Doc*/kernel/power/video.txt, it allows mode of video boot to be +set during run time. + +============================================================== + acct: highwater lowwater frequency diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c index 0102f3d50e5..e7609abf379 100644 --- a/arch/i386/kernel/mpparse.c +++ b/arch/i386/kernel/mpparse.c @@ -710,7 +710,7 @@ void __init get_smp_config (void) * Read the physical hardware table. Anything here will * override the defaults. */ - if (!smp_read_mpc((void *)mpf->mpf_physptr)) { + if (!smp_read_mpc(phys_to_virt(mpf->mpf_physptr))) { smp_found_config = 0; printk(KERN_ERR "BIOS bug, MP table errors detected!...\n"); printk(KERN_ERR "... disabling SMP support. (tell your hw vendor)\n"); diff --git a/arch/m32r/kernel/sys_m32r.c b/arch/m32r/kernel/sys_m32r.c index fe55b28d372..670cb49210a 100644 --- a/arch/m32r/kernel/sys_m32r.c +++ b/arch/m32r/kernel/sys_m32r.c @@ -29,28 +29,7 @@ /* * sys_tas() - test-and-set - * linuxthreads testing version */ -#ifndef CONFIG_SMP -asmlinkage int sys_tas(int *addr) -{ - int oldval; - unsigned long flags; - - if (!access_ok(VERIFY_WRITE, addr, sizeof (int))) - return -EFAULT; - local_irq_save(flags); - oldval = *addr; - if (!oldval) - *addr = 1; - local_irq_restore(flags); - return oldval; -} -#else /* CONFIG_SMP */ -#include <linux/spinlock.h> - -static DEFINE_SPINLOCK(tas_lock); - asmlinkage int sys_tas(int *addr) { int oldval; @@ -58,15 +37,43 @@ asmlinkage int sys_tas(int *addr) if (!access_ok(VERIFY_WRITE, addr, sizeof (int))) return -EFAULT; - _raw_spin_lock(&tas_lock); - oldval = *addr; - if (!oldval) - *addr = 1; - _raw_spin_unlock(&tas_lock); + /* atomic operation: + * oldval = *addr; *addr = 1; + */ + __asm__ __volatile__ ( + DCACHE_CLEAR("%0", "r4", "%1") + " .fillinsn\n" + "1:\n" + " lock %0, @%1 -> unlock %2, @%1\n" + "2:\n" + /* NOTE: + * The m32r processor can accept interrupts only + * at the 32-bit instruction boundary. + * So, in the above code, the "unlock" instruction + * can be executed continuously after the "lock" + * instruction execution without any interruptions. + */ + ".section .fixup,\"ax\"\n" + " .balign 4\n" + "3: ldi %0, #%3\n" + " seth r14, #high(2b)\n" + " or3 r14, r14, #low(2b)\n" + " jmp r14\n" + ".previous\n" + ".section __ex_table,\"a\"\n" + " .balign 4\n" + " .long 1b,3b\n" + ".previous\n" + : "=&r" (oldval) + : "r" (addr), "r" (1), "i"(-EFAULT) + : "r14", "memory" +#ifdef CONFIG_CHIP_M32700_TS1 + , "r4" +#endif /* CONFIG_CHIP_M32700_TS1 */ + ); return oldval; } -#endif /* CONFIG_SMP */ /* * sys_pipe() is the normal C calling standard for creating diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c index 558dd069209..34714d3ea69 100644 --- a/arch/powerpc/platforms/powermac/feature.c +++ b/arch/powerpc/platforms/powermac/feature.c @@ -1646,10 +1646,10 @@ static void intrepid_shutdown(struct macio_chip *macio, int sleep_mode) KL0_SCC_CELL_ENABLE); MACIO_BIC(KEYLARGO_FCR1, - /*KL1_USB2_CELL_ENABLE |*/ KL1_I2S0_CELL_ENABLE | KL1_I2S0_CLK_ENABLE_BIT | KL1_I2S0_ENABLE | KL1_I2S1_CELL_ENABLE | - KL1_I2S1_CLK_ENABLE_BIT | KL1_I2S1_ENABLE); + KL1_I2S1_CLK_ENABLE_BIT | KL1_I2S1_ENABLE | + KL1_EIDE0_ENABLE); if (pmac_mb.board_flags & PMAC_MB_MOBILE) MACIO_BIC(KEYLARGO_FCR1, KL1_UIDE_RESET_N); @@ -2183,7 +2183,7 @@ static struct pmac_mb_def pmac_mb_defs[] = { }, { "PowerMac10,1", "Mac mini", PMAC_TYPE_UNKNOWN_INTREPID, intrepid_features, - PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER, + PMAC_MB_MAY_SLEEP, }, { "iMac,1", "iMac (first generation)", PMAC_TYPE_ORIG_IMAC, paddington_features, @@ -2295,11 +2295,11 @@ static struct pmac_mb_def pmac_mb_defs[] = { }, { "PowerBook5,8", "PowerBook G4 15\"", PMAC_TYPE_UNKNOWN_INTREPID, intrepid_features, - PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE, + PMAC_MB_MAY_SLEEP | PMAC_MB_MOBILE, }, { "PowerBook5,9", "PowerBook G4 17\"", PMAC_TYPE_UNKNOWN_INTREPID, intrepid_features, - PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE, + PMAC_MB_MAY_SLEEP | PMAC_MB_MOBILE, }, { "PowerBook6,1", "PowerBook G4 12\"", PMAC_TYPE_UNKNOWN_INTREPID, intrepid_features, diff --git a/arch/x86_64/defconfig b/arch/x86_64/defconfig index b337136f28b..ce4de61ed85 100644 --- a/arch/x86_64/defconfig +++ b/arch/x86_64/defconfig @@ -1,7 +1,7 @@ # # Automatically generated make config: don't edit -# Linux kernel version: 2.6.16-rc3 -# Mon Feb 13 22:31:24 2006 +# Linux kernel version: 2.6.16-rc3-git9 +# Sat Feb 18 00:27:03 2006 # CONFIG_X86_64=y CONFIG_64BIT=y @@ -1317,7 +1317,7 @@ CONFIG_DETECT_SOFTLOCKUP=y # CONFIG_DEBUG_SPINLOCK is not set # CONFIG_DEBUG_SPINLOCK_SLEEP is not set # CONFIG_DEBUG_KOBJECT is not set -CONFIG_DEBUG_INFO=y +# CONFIG_DEBUG_INFO is not set CONFIG_DEBUG_FS=y # CONFIG_DEBUG_VM is not set # CONFIG_FRAME_POINTER is not set diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index 93e44d0292a..bc9b2bcd7db 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -58,6 +58,7 @@ #include <linux/suspend.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_ioctl.h> +#include <scsi/scsi.h> #include <asm/uaccess.h> @@ -380,6 +381,7 @@ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command * memcpy(rq->cmd, cgc->cmd, CDROM_PACKET_SIZE); if (sizeof(rq->cmd) > CDROM_PACKET_SIZE) memset(rq->cmd + CDROM_PACKET_SIZE, 0, sizeof(rq->cmd) - CDROM_PACKET_SIZE); + rq->cmd_len = COMMAND_SIZE(rq->cmd[0]); rq->ref_count++; rq->flags |= REQ_NOMERGE; @@ -1495,40 +1497,42 @@ static int pkt_set_write_settings(struct pktcdvd_device *pd) } /* - * 0 -- we can write to this track, 1 -- we can't + * 1 -- we can write to this track, 0 -- we can't */ -static int pkt_good_track(track_information *ti) +static int pkt_writable_track(struct pktcdvd_device *pd, track_information *ti) { - /* - * only good for CD-RW at the moment, not DVD-RW - */ + switch (pd->mmc3_profile) { + case 0x1a: /* DVD+RW */ + case 0x12: /* DVD-RAM */ + /* The track is always writable on DVD+RW/DVD-RAM */ + return 1; + default: + break; + } - /* - * FIXME: only for FP - */ - if (ti->fp == 0) + if (!ti->packet || !ti->fp) return 0; /* * "good" settings as per Mt Fuji. */ - if (ti->rt == 0 && ti->blank == 0 && ti->packet == 1) - return 0; + if (ti->rt == 0 && ti->blank == 0) + return 1; - if (ti->rt == 0 && ti->blank == 1 && ti->packet == 1) - return 0; + if (ti->rt == 0 && ti->blank == 1) + return 1; - if (ti->rt == 1 && ti->blank == 0 && ti->packet == 1) - return 0; + if (ti->rt == 1 && ti->blank == 0) + return 1; printk("pktcdvd: bad state %d-%d-%d\n", ti->rt, ti->blank, ti->packet); - return 1; + return 0; } /* - * 0 -- we can write to this disc, 1 -- we can't + * 1 -- we can write to this disc, 0 -- we can't */ -static int pkt_good_disc(struct pktcdvd_device *pd, disc_information *di) +static int pkt_writable_disc(struct pktcdvd_device *pd, disc_information *di) { switch (pd->mmc3_profile) { case 0x0a: /* CD-RW */ @@ -1537,10 +1541,10 @@ static int pkt_good_disc(struct pktcdvd_device *pd, disc_information *di) case 0x1a: /* DVD+RW */ case 0x13: /* DVD-RW */ case 0x12: /* DVD-RAM */ - return 0; + return 1; default: VPRINTK("pktcdvd: Wrong disc profile (%x)\n", pd->mmc3_profile); - return 1; + return 0; } /* @@ -1549,25 +1553,25 @@ static int pkt_good_disc(struct pktcdvd_device *pd, disc_information *di) */ if (di->disc_type == 0xff) { printk("pktcdvd: Unknown disc. No track?\n"); - return 1; + return 0; } if (di->disc_type != 0x20 && di->disc_type != 0) { printk("pktcdvd: Wrong disc type (%x)\n", di->disc_type); - return 1; + return 0; } if (di->erasable == 0) { printk("pktcdvd: Disc not erasable\n"); - return 1; + return 0; } if (di->border_status == PACKET_SESSION_RESERVED) { printk("pktcdvd: Can't write to last track (reserved)\n"); - return 1; + return 0; } - return 0; + return 1; } static int pkt_probe_settings(struct pktcdvd_device *pd) @@ -1592,23 +1596,9 @@ static int pkt_probe_settings(struct pktcdvd_device *pd) return ret; } - if (pkt_good_disc(pd, &di)) - return -ENXIO; + if (!pkt_writable_disc(pd, &di)) + return -EROFS; - switch (pd->mmc3_profile) { - case 0x1a: /* DVD+RW */ - printk("pktcdvd: inserted media is DVD+RW\n"); - break; - case 0x13: /* DVD-RW */ - printk("pktcdvd: inserted media is DVD-RW\n"); - break; - case 0x12: /* DVD-RAM */ - printk("pktcdvd: inserted media is DVD-RAM\n"); - break; - default: - printk("pktcdvd: inserted media is CD-R%s\n", di.erasable ? "W" : ""); - break; - } pd->type = di.erasable ? PACKET_CDRW : PACKET_CDR; track = 1; /* (di.last_track_msb << 8) | di.last_track_lsb; */ @@ -1617,9 +1607,9 @@ static int pkt_probe_settings(struct pktcdvd_device *pd) return ret; } - if (pkt_good_track(&ti)) { + if (!pkt_writable_track(pd, &ti)) { printk("pktcdvd: can't write to this track\n"); - return -ENXIO; + return -EROFS; } /* @@ -1633,7 +1623,7 @@ static int pkt_probe_settings(struct pktcdvd_device *pd) } if (pd->settings.size > PACKET_MAX_SECTORS) { printk("pktcdvd: packet size is too big\n"); - return -ENXIO; + return -EROFS; } pd->settings.fp = ti.fp; pd->offset = (be32_to_cpu(ti.track_start) << 2) & (pd->settings.size - 1); @@ -1675,7 +1665,7 @@ static int pkt_probe_settings(struct pktcdvd_device *pd) break; default: printk("pktcdvd: unknown data mode\n"); - return 1; + return -EROFS; } return 0; } @@ -1886,7 +1876,7 @@ static int pkt_open_write(struct pktcdvd_device *pd) if ((ret = pkt_probe_settings(pd))) { VPRINTK("pktcdvd: %s failed probe\n", pd->name); - return -EROFS; + return ret; } if ((ret = pkt_set_write_settings(pd))) { diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c index 5765f672e85..d58f8231885 100644 --- a/drivers/char/sysrq.c +++ b/drivers/char/sysrq.c @@ -243,7 +243,7 @@ static struct sysrq_key_op sysrq_term_op = { static void moom_callback(void *ignored) { - out_of_memory(GFP_KERNEL, 0); + out_of_memory(&NODE_DATA(0)->node_zonelists[ZONE_NORMAL], GFP_KERNEL, 0); } static DECLARE_WORK(moom_work, moom_callback, NULL); diff --git a/drivers/fc4/fc.c b/drivers/fc4/fc.c index 5c8943509cc..66d03f242d3 100644 --- a/drivers/fc4/fc.c +++ b/drivers/fc4/fc.c @@ -1053,7 +1053,7 @@ static int fc_do_els(fc_channel *fc, unsigned int alpa, void *data, int len) int i; fcmd = &_fcmd; - memset(fcmd, 0, sizeof(fcmd)); + memset(fcmd, 0, sizeof(fcp_cmnd)); FCD(("PLOGI SID %d DID %d\n", fc->sid, alpa)) fch = &fcmd->fch; FILL_FCHDR_RCTL_DID(fch, R_CTL_ELS_REQ, alpa); diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index 69c04945591..ded2c33f5b8 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -1019,8 +1019,8 @@ static void __xipram xip_udelay(struct map_info *map, struct flchip *chip, #define XIP_INVAL_CACHED_RANGE(map, from, size) \ INVALIDATE_CACHED_RANGE(map, from, size) -#define INVALIDATE_CACHE_UDELAY(map, chip, adr, len, usec) \ - UDELAY(map, chip, adr, usec) +#define INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr, adr, len, usec) \ + UDELAY(map, chip, cmd_adr, usec) /* * Extra notes: @@ -1052,7 +1052,7 @@ do { \ spin_lock(chip->mutex); \ } while (0) -#define INVALIDATE_CACHE_UDELAY(map, chip, adr, len, usec) \ +#define INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr, adr, len, usec) \ do { \ spin_unlock(chip->mutex); \ INVALIDATE_CACHED_RANGE(map, adr, len); \ @@ -1284,7 +1284,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, map_write(map, datum, adr); chip->state = mode; - INVALIDATE_CACHE_UDELAY(map, chip, + INVALIDATE_CACHE_UDELAY(map, chip, adr, adr, map_bankwidth(map), chip->word_write_time); @@ -1572,8 +1572,8 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, map_write(map, CMD(0xd0), cmd_adr); chip->state = FL_WRITING; - INVALIDATE_CACHE_UDELAY(map, chip, - cmd_adr, len, + INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr, + adr, len, chip->buffer_write_time); timeo = jiffies + (HZ/2); @@ -1744,7 +1744,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, chip->state = FL_ERASING; chip->erase_suspended = 0; - INVALIDATE_CACHE_UDELAY(map, chip, + INVALIDATE_CACHE_UDELAY(map, chip, adr, adr, len, chip->erase_time*1000/2); diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c index 14beab4bc91..287676ad80d 100644 --- a/drivers/net/wireless/ipw2200.c +++ b/drivers/net/wireless/ipw2200.c @@ -4616,9 +4616,9 @@ static void ipw_rx_notification(struct ipw_priv *priv, } default: - IPW_ERROR("Unknown notification: " - "subtype=%d,flags=0x%2x,size=%d\n", - notif->subtype, notif->flags, notif->size); + IPW_DEBUG_NOTIF("Unknown notification: " + "subtype=%d,flags=0x%2x,size=%d\n", + notif->subtype, notif->flags, notif->size); } } diff --git a/drivers/s390/block/Kconfig b/drivers/s390/block/Kconfig index 6912399d093..6f50cc9323d 100644 --- a/drivers/s390/block/Kconfig +++ b/drivers/s390/block/Kconfig @@ -55,21 +55,13 @@ config DASD_DIAG Disks under VM. If you are not running under VM or unsure what it is, say "N". -config DASD_EER - tristate "Extended error reporting (EER)" - depends on DASD - help - This driver provides a character device interface to the - DASD extended error reporting. This is only needed if you want to - use applications written for the EER facility. - config DASD_CMB tristate "Compatibility interface for DASD channel measurement blocks" depends on DASD help - This driver provides an additional interface to the channel - measurement facility, which is normally accessed though sysfs, with - a set of ioctl functions specific to the dasd driver. + This driver provides an additional interface to the channel measurement + facility, which is normally accessed though sysfs, with a set of + ioctl functions specific to the dasd driver. This is only needed if you want to use applications written for linux-2.4 dasd channel measurement facility interface. diff --git a/drivers/s390/block/Makefile b/drivers/s390/block/Makefile index 0c0d871e8f5..58c6780134f 100644 --- a/drivers/s390/block/Makefile +++ b/drivers/s390/block/Makefile @@ -5,7 +5,6 @@ dasd_eckd_mod-objs := dasd_eckd.o dasd_3990_erp.o dasd_9343_erp.o dasd_fba_mod-objs := dasd_fba.o dasd_3370_erp.o dasd_9336_erp.o dasd_diag_mod-objs := dasd_diag.o -dasd_eer_mod-objs := dasd_eer.o dasd_mod-objs := dasd.o dasd_ioctl.o dasd_proc.o dasd_devmap.o \ dasd_genhd.o dasd_erp.o @@ -14,6 +13,5 @@ obj-$(CONFIG_DASD_DIAG) += dasd_diag_mod.o obj-$(CONFIG_DASD_ECKD) += dasd_eckd_mod.o obj-$(CONFIG_DASD_FBA) += dasd_fba_mod.o obj-$(CONFIG_DASD_CMB) += dasd_cmb.o -obj-$(CONFIG_DASD_EER) += dasd_eer.o obj-$(CONFIG_BLK_DEV_XPRAM) += xpram.o obj-$(CONFIG_DCSSBLK) += dcssblk.o diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 08c88fcd896..af1d5b404ce 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -18,7 +18,6 @@ #include <linux/slab.h> #include <linux/buffer_head.h> #include <linux/hdreg.h> -#include <linux/notifier.h> #include <asm/ccwdev.h> #include <asm/ebcdic.h> @@ -58,7 +57,6 @@ static void dasd_int_handler(struct ccw_device *, unsigned long, struct irb *); static void dasd_flush_ccw_queue(struct dasd_device *, int); static void dasd_tasklet(struct dasd_device *); static void do_kick_device(void *data); -static void dasd_disable_eer(struct dasd_device *device); /* * SECTION: Operations on the device structure. @@ -153,10 +151,13 @@ dasd_state_new_to_known(struct dasd_device *device) static inline void dasd_state_known_to_new(struct dasd_device * device) { - /* disable extended error reporting for this device */ - dasd_disable_eer(device); /* Forget the discipline information. */ + if (device->discipline) + module_put(device->discipline->owner); device->discipline = NULL; + if (device->base_discipline) + module_put(device->base_discipline->owner); + device->base_discipline = NULL; device->state = DASD_STATE_NEW; dasd_free_queue(device); @@ -871,9 +872,6 @@ dasd_handle_state_change_pending(struct dasd_device *device) struct dasd_ccw_req *cqr; struct list_head *l, *n; - /* first of all call extended error reporting */ - dasd_write_eer_trigger(DASD_EER_STATECHANGE, device, NULL); - device->stopped &= ~DASD_STOPPED_PENDING; /* restart all 'running' IO on queue */ @@ -1093,19 +1091,6 @@ restart: } goto restart; } - - /* first of all call extended error reporting */ - if (device->eer && cqr->status == DASD_CQR_FAILED) { - dasd_write_eer_trigger(DASD_EER_FATALERROR, - device, cqr); - - /* restart request */ - cqr->status = DASD_CQR_QUEUED; - cqr->retries = 255; - device->stopped |= DASD_STOPPED_QUIESCE; - goto restart; - } - /* Process finished ERP request. */ if (cqr->refers) { __dasd_process_erp(device, cqr); @@ -1243,8 +1228,7 @@ __dasd_start_head(struct dasd_device * device) cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, list); /* check FAILFAST */ if (device->stopped & ~DASD_STOPPED_PENDING && - test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags) && - (!device->eer)) { + test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags)) { cqr->status = DASD_CQR_FAILED; dasd_schedule_bh(device); } @@ -1880,9 +1864,10 @@ dasd_generic_remove (struct ccw_device *cdev) */ int dasd_generic_set_online (struct ccw_device *cdev, - struct dasd_discipline *discipline) + struct dasd_discipline *base_discipline) { + struct dasd_discipline *discipline; struct dasd_device *device; int rc; @@ -1890,6 +1875,7 @@ dasd_generic_set_online (struct ccw_device *cdev, if (IS_ERR(device)) return PTR_ERR(device); + discipline = base_discipline; if (device->features & DASD_FEATURE_USEDIAG) { if (!dasd_diag_discipline_pointer) { printk (KERN_WARNING @@ -1901,6 +1887,16 @@ dasd_generic_set_online (struct ccw_device *cdev, } discipline = dasd_diag_discipline_pointer; } + if (!try_module_get(base_discipline->owner)) { + dasd_delete_device(device); + return -EINVAL; + } + if (!try_module_get(discipline->owner)) { + module_put(base_discipline->owner); + dasd_delete_device(device); + return -EINVAL; + } + device->base_discipline = base_discipline; device->discipline = discipline; rc = discipline->check_device(device); @@ -1909,6 +1905,8 @@ dasd_generic_set_online (struct ccw_device *cdev, "dasd_generic couldn't online device %s " "with discipline %s rc=%i\n", cdev->dev.bus_id, discipline->name, rc); + module_put(discipline->owner); + module_put(base_discipline->owner); dasd_delete_device(device); return rc; } @@ -1986,9 +1984,6 @@ dasd_generic_notify(struct ccw_device *cdev, int event) switch (event) { case CIO_GONE: case CIO_NO_PATH: - /* first of all call extended error reporting */ - dasd_write_eer_trigger(DASD_EER_NOPATH, device, NULL); - if (device->state < DASD_STATE_BASIC) break; /* Device is active. We want to keep it. */ @@ -2046,51 +2041,6 @@ dasd_generic_auto_online (struct ccw_driver *dasd_discipline_driver) put_driver(drv); } -/* - * notifications for extended error reports - */ -static struct notifier_block *dasd_eer_chain; - -int -dasd_register_eer_notifier(struct notifier_block *nb) -{ - return notifier_chain_register(&dasd_eer_chain, nb); -} - -int -dasd_unregister_eer_notifier(struct notifier_block *nb) -{ - return notifier_chain_unregister(&dasd_eer_chain, nb); -} - -/* - * Notify the registered error reporting module of a problem - */ -void -dasd_write_eer_trigger(unsigned int id, struct dasd_device *device, - struct dasd_ccw_req *cqr) -{ - if (device->eer) { - struct dasd_eer_trigger temp; - temp.id = id; - temp.device = device; - temp.cqr = cqr; - notifier_call_chain(&dasd_eer_chain, DASD_EER_TRIGGER, - (void *)&temp); - } -} - -/* - * Tell the registered error reporting module to disable error reporting for - * a given device and to cleanup any private data structures on that device. - */ -static void -dasd_disable_eer(struct dasd_device *device) -{ - notifier_call_chain(&dasd_eer_chain, DASD_EER_DISABLE, (void *)device); -} - - static int __init dasd_init(void) { @@ -2172,11 +2122,6 @@ EXPORT_SYMBOL_GPL(dasd_generic_set_online); EXPORT_SYMBOL_GPL(dasd_generic_set_offline); EXPORT_SYMBOL_GPL(dasd_generic_auto_online); -EXPORT_SYMBOL(dasd_register_eer_notifier); -EXPORT_SYMBOL(dasd_unregister_eer_notifier); -EXPORT_SYMBOL(dasd_write_eer_trigger); - - /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c index c811380b907..4ee0f934e32 100644 --- a/drivers/s390/block/dasd_3990_erp.c +++ b/drivers/s390/block/dasd_3990_erp.c @@ -1108,9 +1108,6 @@ dasd_3990_handle_env_data(struct dasd_ccw_req * erp, char *sense) case 0x0B: DEV_MESSAGE(KERN_WARNING, device, "%s", "FORMAT F - Volume is suspended duplex"); - /* call extended error reporting (EER) */ - dasd_write_eer_trigger(DASD_EER_PPRCSUSPEND, device, - erp->refers); break; case 0x0C: DEV_MESSAGE(KERN_WARNING, device, "%s", diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h index e15dd797805..bc3823d3522 100644 --- a/drivers/s390/block/dasd_eckd.h +++ b/drivers/s390/block/dasd_eckd.h @@ -29,7 +29,6 @@ #define DASD_ECKD_CCW_PSF 0x27 #define DASD_ECKD_CCW_RSSD 0x3e #define DASD_ECKD_CCW_LOCATE_RECORD 0x47 -#define DASD_ECKD_CCW_SNSS 0x54 #define DASD_ECKD_CCW_DEFINE_EXTENT 0x63 #define DASD_ECKD_CCW_WRITE_MT 0x85 #define DASD_ECKD_CCW_READ_MT 0x86 diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c deleted file mode 100644 index f70cd7716b2..00000000000 --- a/drivers/s390/block/dasd_eer.c +++ /dev/null @@ -1,1090 +0,0 @@ -/* - * character device driver for extended error reporting - * - * - * Copyright (C) 2005 IBM Corporation - * extended error reporting for DASD ECKD devices - * Author(s): Stefan Weinhuber <wein@de.ibm.com> - * - */ - -#include <linux/init.h> -#include <linux/fs.h> -#include <linux/kernel.h> -#include <linux/miscdevice.h> -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/device.h> -#include <linux/workqueue.h> -#include <linux/poll.h> -#include <linux/notifier.h> - -#include <asm/uaccess.h> -#include <asm/semaphore.h> -#include <asm/atomic.h> -#include <asm/ebcdic.h> - -#include "dasd_int.h" -#include "dasd_eckd.h" - - -MODULE_LICENSE("GPL"); - -MODULE_AUTHOR("Stefan Weinhuber <wein@de.ibm.com>"); -MODULE_DESCRIPTION("DASD extended error reporting module"); - - -#ifdef PRINTK_HEADER -#undef PRINTK_HEADER -#endif /* PRINTK_HEADER */ -#define PRINTK_HEADER "dasd(eer):" - - - - - -/*****************************************************************************/ -/* the internal buffer */ -/*****************************************************************************/ - -/* - * The internal buffer is meant to store obaque blobs of data, so it doesn't - * know of higher level concepts like triggers. - * It consists of a number of pages that are used as a ringbuffer. Each data - * blob is stored in a simple record that consists of an integer, which - * contains the size of the following data, and the data bytes themselfes. - * - * To allow for multiple independent readers we create one internal buffer - * each time the device is opened and destroy the buffer when the file is - * closed again. - * - * One record can be written to a buffer by using the functions - * - dasd_eer_start_record (one time per record to write the size to the buffer - * and reserve the space for the data) - * - dasd_eer_write_buffer (one or more times per record to write the data) - * The data can be written in several steps but you will have to compute - * the total size up front for the invocation of dasd_eer_start_record. - * If the ringbuffer is full, dasd_eer_start_record will remove the required - * number of old records. - * - * A record is typically read in two steps, first read the integer that - * specifies the size of the following data, then read the data. - * Both can be done by - * - dasd_eer_read_buffer - * - * For all mentioned functions you need to get the bufferlock first and keep it - * until a complete record is written or read. - */ - - -/* - * Alle information necessary to keep track of an internal buffer is kept in - * a struct eerbuffer. The buffer specific to a file pointer is strored in - * the private_data field of that file. To be able to write data to all - * existing buffers, each buffer is also added to the bufferlist. - * If the user doesn't want to read a complete record in one go, we have to - * keep track of the rest of the record. residual stores the number of bytes - * that are still to deliver. If the rest of the record is invalidated between - * two reads then residual will be set to -1 so that the next read will fail. - * All entries in the eerbuffer structure are protected with the bufferlock. - * To avoid races between writing to a buffer on the one side and creating - * and destroying buffers on the other side, the bufferlock must also be used - * to protect the bufferlist. - */ - -struct eerbuffer { - struct list_head list; - char **buffer; - int buffersize; - int buffer_page_count; - int head; - int tail; - int residual; -}; - -LIST_HEAD(bufferlist); - -static spinlock_t bufferlock = SPIN_LOCK_UNLOCKED; - -DECLARE_WAIT_QUEUE_HEAD(dasd_eer_read_wait_queue); - -/* - * How many free bytes are available on the buffer. - * needs to be called with bufferlock held - */ -static int -dasd_eer_get_free_bytes(struct eerbuffer *eerb) -{ - if (eerb->head < eerb->tail) { - return eerb->tail - eerb->head - 1; - } else - return eerb->buffersize - eerb->head + eerb->tail -1; -} - -/* - * How many bytes of buffer space are used. - * needs to be called with bufferlock held - */ -static int -dasd_eer_get_filled_bytes(struct eerbuffer *eerb) -{ - - if (eerb->head >= eerb->tail) { - return eerb->head - eerb->tail; - } else - return eerb->buffersize - eerb->tail + eerb->head; -} - -/* - * The dasd_eer_write_buffer function just copies count bytes of data - * to the buffer. Make sure to call dasd_eer_start_record first, to - * make sure that enough free space is available. - * needs to be called with bufferlock held - */ -static void -dasd_eer_write_buffer(struct eerbuffer *eerb, int count, char *data) -{ - - unsigned long headindex,localhead; - unsigned long rest, len; - char *nextdata; - - nextdata = data; - rest = count; - while (rest > 0) { - headindex = eerb->head / PAGE_SIZE; - localhead = eerb->head % PAGE_SIZE; - len = min(rest, (PAGE_SIZE - localhead)); - memcpy(eerb->buffer[headindex]+localhead, nextdata, len); - nextdata += len; - rest -= len; - eerb->head += len; - if ( eerb->head == eerb->buffersize ) - eerb->head = 0; /* wrap around */ - if (eerb->head > eerb->buffersize) { - MESSAGE(KERN_ERR, "%s", "runaway buffer head."); - BUG(); - } - } -} - -/* - * needs to be called with bufferlock held - */ -static int -dasd_eer_read_buffer(struct eerbuffer *eerb, int count, char *data) -{ - - unsigned long tailindex,localtail; - unsigned long rest, len, finalcount; - char *nextdata; - - finalcount = min(count, dasd_eer_get_filled_bytes(eerb)); - nextdata = data; - rest = finalcount; - while (rest > 0) { - tailindex = eerb->tail / PAGE_SIZE; - localtail = eerb->tail % PAGE_SIZE; - len = min(rest, (PAGE_SIZE - localtail)); - memcpy(nextdata, eerb->buffer[tailindex]+localtail, len); - nextdata += len; - rest -= len; - eerb->tail += len; - if ( eerb->tail == eerb->buffersize ) - eerb->tail = 0; /* wrap around */ - if (eerb->tail > eerb->buffersize) { - MESSAGE(KERN_ERR, "%s", "runaway buffer tail."); - BUG(); - } - } - return finalcount; -} - -/* - * Whenever you want to write a blob of data to the internal buffer you - * have to start by using this function first. It will write the number - * of bytes that will be written to the buffer. If necessary it will remove - * old records to make room for the new one. - * needs to be called with bufferlock held - */ -static int -dasd_eer_start_record(struct eerbuffer *eerb, int count) -{ - int tailcount; - if (count + sizeof(count) > eerb->buffersize) - return -ENOMEM; - while (dasd_eer_get_free_bytes(eerb) < count + sizeof(count)) { - if (eerb->residual > 0) { - eerb->tail += eerb->residual; - if (eerb->tail >= eerb->buffersize) - eerb->tail -= eerb->buffersize; - eerb->residual = -1; - } - dasd_eer_read_buffer(eerb, sizeof(tailcount), - (char*)(&tailcount)); - eerb->tail += tailcount; - if (eerb->tail >= eerb->buffersize) - eerb->tail -= eerb->buffersize; - } - dasd_eer_write_buffer(eerb, sizeof(count), (char*)(&count)); - - return 0; -}; - -/* - * release pages that are not used anymore - */ -static void -dasd_eer_free_buffer_pages(char **buf, int no_pages) -{ - int i; - - for (i = 0; i < no_pages; ++i) { - free_page((unsigned long)buf[i]); - } -} - -/* - * allocate a new set of memory pages - */ -static int -dasd_eer_allocate_buffer_pages(char **buf, int no_pages) -{ - int i; - - for (i = 0; i < no_pages; ++i) { - buf[i] = (char *) get_zeroed_page(GFP_KERNEL); - if (!buf[i]) { - dasd_eer_free_buffer_pages(buf, i); - return -ENOMEM; - } - } - return 0; -} - -/* - * empty the buffer by resetting head and tail - * In case there is a half read data blob in the buffer, we set residual - * to -1 to indicate that the remainder of the blob is lost. - */ -static void -dasd_eer_purge_buffer(struct eerbuffer *eerb) -{ - unsigned long flags; - - spin_lock_irqsave(&bufferlock, flags); - if (eerb->residual > 0) - eerb->residual = -1; - eerb->tail=0; - eerb->head=0; - spin_unlock_irqrestore(&bufferlock, flags); -} - -/* - * set the size of the buffer, newsize is the new number of pages to be used - * we don't try to copy any data back an forth, so any resize will also purge - * the buffer - */ -static int -dasd_eer_resize_buffer(struct eerbuffer *eerb, int newsize) -{ - int i, oldcount, reuse; - char **new; - char **old; - unsigned long flags; - - if (newsize < 1) - return -EINVAL; - if (eerb->buffer_page_count == newsize) { - /* documented behaviour is that any successfull invocation - * will purge all records */ - dasd_eer_purge_buffer(eerb); - return 0; - } - new = kmalloc(newsize*sizeof(char*), GFP_KERNEL); - if (!new) - return -ENOMEM; - - reuse=min(eerb->buffer_page_count, newsize); - for (i = 0; i < reuse; ++i) { - new[i] = eerb->buffer[i]; - } - if (eerb->buffer_page_count < newsize) { - if (dasd_eer_allocate_buffer_pages( - &new[eerb->buffer_page_count], - newsize - eerb->buffer_page_count)) { - kfree(new); - return -ENOMEM; - } - } - - spin_lock_irqsave(&bufferlock, flags); - old = eerb->buffer; - eerb->buffer = new; - if (eerb->residual > 0) - eerb->residual = -1; - eerb->tail = 0; - eerb->head = 0; - oldcount = eerb->buffer_page_count; - eerb->buffer_page_count = newsize; - spin_unlock_irqrestore(&bufferlock, flags); - - if (oldcount > newsize) { - for (i = newsize; i < oldcount; ++i) { - free_page((unsigned long)old[i]); - } - } - kfree(old); - - return 0; -} - - -/*****************************************************************************/ -/* The extended error reporting functionality */ -/*****************************************************************************/ - -/* - * When a DASD device driver wants to report an error, it calls the - * function dasd_eer_write_trigger (via a notifier mechanism) and gives the - * respective trigger ID as parameter. - * Currently there are four kinds of triggers: - * - * DASD_EER_FATALERROR: all kinds of unrecoverable I/O problems - * DASD_EER_PPRCSUSPEND: PPRC was suspended - * DASD_EER_NOPATH: There is no path to the device left. - * DASD_EER_STATECHANGE: The state of the device has changed. - * - * For the first three triggers all required information can be supplied by - * the caller. For these triggers a record is written by the function - * dasd_eer_write_standard_trigger. - * - * When dasd_eer_write_trigger is called to write a DASD_EER_STATECHANGE - * trigger, we have to gather the necessary sense data first. We cannot queue - * the necessary SNSS (sense subsystem status) request immediatly, since we - * are likely to run in a deadlock situation. Instead, we schedule a - * work_struct that calls the function dasd_eer_sense_subsystem_status to - * create and start an SNSS request asynchronously. - * - * To avoid memory allocations at runtime, the necessary memory is allocated - * when the extended error reporting is enabled for a device (by - * dasd_eer_probe). There is one private eer data structure for each eer - * enabled DASD device. It contains memory for the work_struct, one SNSS cqr - * and a flags field that is used to coordinate the use of the cqr. The call - * to write a state change trigger can come in at any time, so we have one flag - * CQR_IN_USE that protects the cqr itself. When this flag indicates that the - * cqr is currently in use, dasd_eer_sense_subsystem_status cannot start a - * second request but sets the SNSS_REQUESTED flag instead. - * - * When the request is finished, the callback function dasd_eer_SNSS_cb - * is called. This function will invoke the function - * dasd_eer_write_SNSS_trigger to finally write the trigger. It will also - * check the SNSS_REQUESTED flag and if it is set it will call - * dasd_eer_sense_subsystem_status again. - * - * To avoid race conditions during the handling of the lock, the flags must - * be protected by the snsslock. - */ - -struct dasd_eer_private { - struct dasd_ccw_req *cqr; - unsigned long flags; - struct work_struct worker; -}; - -static void dasd_eer_destroy(struct dasd_device *device, - struct dasd_eer_private *eer); -static int -dasd_eer_write_trigger(struct dasd_eer_trigger *trigger); -static void dasd_eer_sense_subsystem_status(void *data); -static int dasd_eer_notify(struct notifier_block *self, - unsigned long action, void *data); - -struct workqueue_struct *dasd_eer_workqueue; - -#define SNSS_DATA_SIZE 44 -static spinlock_t snsslock = SPIN_LOCK_UNLOCKED; - -#define DASD_EER_BUSID_SIZE 10 -struct dasd_eer_header { - __u32 total_size; - __u32 trigger; - __u64 tv_sec; - __u64 tv_usec; - char busid[DASD_EER_BUSID_SIZE]; -} __attribute__ ((packed)); - -static struct notifier_block dasd_eer_nb = { - .notifier_call = dasd_eer_notify, -}; - -/* - * flags for use with dasd_eer_private - */ -#define CQR_IN_USE 0 -#define SNSS_REQUESTED 1 - -/* - * This function checks if extended error reporting is available for a given - * dasd_device. If yes, then it creates and returns a struct dasd_eer, - * otherwise it returns an -EPERM error pointer. - */ -struct dasd_eer_private * -dasd_eer_probe(struct dasd_device *device) -{ - struct dasd_eer_private *private; - - if (!(device && device->discipline - && !strcmp(device->discipline->name, "ECKD"))) { - return ERR_PTR(-EPERM); - } - /* allocate the private data structure */ - private = (struct dasd_eer_private *)kmalloc( - sizeof(struct dasd_eer_private), GFP_KERNEL); - if (!private) { - return ERR_PTR(-ENOMEM); - } - INIT_WORK(&private->worker, dasd_eer_sense_subsystem_status, - (void *)device); - private->cqr = dasd_kmalloc_request("ECKD", - 1 /* SNSS */ , - SNSS_DATA_SIZE , - device); - if (!private->cqr) { - kfree(private); - return ERR_PTR(-ENOMEM); - } - private->flags = 0; - return private; -}; - -/* - * If our private SNSS request is queued, remove it from the - * dasd ccw queue so we can free the requests memory. - */ -static void -dasd_eer_dequeue_SNSS_request(struct dasd_device *device, - struct dasd_eer_private *eer) -{ - struct list_head *lst, *nxt; - struct dasd_ccw_req *cqr, *erpcqr; - dasd_erp_fn_t erp_fn; - - spin_lock_irq(get_ccwdev_lock(device->cdev)); - list_for_each_safe(lst, nxt, &device->ccw_queue) { - cqr = list_entry(lst, struct dasd_ccw_req, list); - /* we are looking for two kinds or requests */ - /* first kind: our SNSS request: */ - if (cqr == eer->cqr) { - if (cqr->status == DASD_CQR_IN_IO) - device->discipline->term_IO(cqr); - list_del(&cqr->list); - break; - } - /* second kind: ERP requests for our SNSS request */ - if (cqr->refers) { - /* If this erp request chain ends in our cqr, then */ - /* cal the erp_postaction to clean it up */ - erpcqr = cqr; - while (erpcqr->refers) { - erpcqr = erpcqr->refers; - } - if (erpcqr == eer->cqr) { - erp_fn = device->discipline->erp_postaction( - cqr); - erp_fn(cqr); - } - continue; - } - } - spin_unlock_irq(get_ccwdev_lock(device->cdev)); -} - -/* - * This function dismantles a struct dasd_eer that was created by - * dasd_eer_probe. Since we want to free our private data structure, - * we must make sure that the memory is not in use anymore. - * We have to flush the work queue and remove a possible SNSS request - * from the dasd queue. - */ -static void -dasd_eer_destroy(struct dasd_device *device, struct dasd_eer_private *eer) -{ - flush_workqueue(dasd_eer_workqueue); - dasd_eer_dequeue_SNSS_request(device, eer); - dasd_kfree_request(eer->cqr, device); - kfree(eer); -}; - -/* - * enable the extended error reporting for a particular device - */ -static int -dasd_eer_enable_on_device(struct dasd_device *device) -{ - void *eer; - if (!device) - return -ENODEV; - if (device->eer) - return 0; - if (!try_module_get(THIS_MODULE)) { - return -EINVAL; - } - eer = (void *)dasd_eer_probe(device); - if (IS_ERR(eer)) { - module_put(THIS_MODULE); - return PTR_ERR(eer); - } - device->eer = eer; - return 0; -} - -/* - * enable the extended error reporting for a particular device - */ -static int -dasd_eer_disable_on_device(struct dasd_device *device) -{ - struct dasd_eer_private *eer = device->eer; - - if (!device) - return -ENODEV; - if (!device->eer) - return 0; - device->eer = NULL; - dasd_eer_destroy(device,eer); - module_put(THIS_MODULE); - - return 0; -} - -/* - * Set extended error reporting (eer) - * Note: This will be registered as a DASD ioctl, to be called on DASD devices. - */ -static int -dasd_ioctl_set_eer(struct block_device *bdev, int no, long args) -{ - struct dasd_device *device; - int intval; - - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - if (bdev != bdev->bd_contains) - /* Error-reporting is not allowed for partitions */ - return -EINVAL; - if (get_user(intval, (int __user *) args)) - return -EFAULT; - device = bdev->bd_disk->private_data; - if (device == NULL) - return -ENODEV; - - intval = (intval != 0); - DEV_MESSAGE (KERN_DEBUG, device, - "set eer on device to %d", intval); - if (intval) - return dasd_eer_enable_on_device(device); - else - return dasd_eer_disable_on_device(device); -} - -/* - * Get value of extended error reporting. - * Note: This will be registered as a DASD ioctl, to be called on DASD devices. - */ -static int -dasd_ioctl_get_eer(struct block_device *bdev, int no, long args) -{ - struct dasd_device *device; - - device = bdev->bd_disk->private_data; - if (device == NULL) - return -ENODEV; - return put_user((device->eer != NULL), (int __user *) args); -} - -/* - * The following function can be used for those triggers that have - * all necessary data available when the function is called. - * If the parameter cqr is not NULL, the chain of requests will be searched - * for valid sense data, and all valid sense data sets will be added to - * the triggers data. - */ -static int -dasd_eer_write_standard_trigger(int trigger, struct dasd_device *device, - struct dasd_ccw_req *cqr) -{ - struct dasd_ccw_req *temp_cqr; - int data_size; - struct timeval tv; - struct dasd_eer_header header; - unsigned long flags; - struct eerbuffer *eerb; - - /* go through cqr chain and count the valid sense data sets */ - temp_cqr = cqr; - data_size = 0; - while (temp_cqr) { - if (temp_cqr->irb.esw.esw0.erw.cons) - data_size += 32; - temp_cqr = temp_cqr->refers; - } - - header.total_size = sizeof(header) + data_size + 4; /* "EOR" */ - header.trigger = trigger; - do_gettimeofday(&tv); - header.tv_sec = tv.tv_sec; - header.tv_usec = tv.tv_usec; - strncpy(header.busid, device->cdev->dev.bus_id, DASD_EER_BUSID_SIZE); - - spin_lock_irqsave(&bufferlock, flags); - list_for_each_entry(eerb, &bufferlist, list) { - dasd_eer_start_record(eerb, header.total_size); - dasd_eer_write_buffer(eerb, sizeof(header), (char*)(&header)); - temp_cqr = cqr; - while (temp_cqr) { - if (temp_cqr->irb.esw.esw0.erw.cons) - dasd_eer_write_buffer(eerb, 32, cqr->irb.ecw); - temp_cqr = temp_cqr->refers; - } - dasd_eer_write_buffer(eerb, 4,"EOR"); - } - spin_unlock_irqrestore(&bufferlock, flags); - - wake_up_interruptible(&dasd_eer_read_wait_queue); - - return 0; -} - -/* - * This function writes a DASD_EER_STATECHANGE trigger. - */ -static void -dasd_eer_write_SNSS_trigger(struct dasd_device *device, - struct dasd_ccw_req *cqr) -{ - int data_size; - int snss_rc; - struct timeval tv; - struct dasd_eer_header header; - unsigned long flags; - struct eerbuffer *eerb; - - snss_rc = (cqr->status == DASD_CQR_FAILED) ? -EIO : 0; - if (snss_rc) - data_size = 0; - else - data_size = SNSS_DATA_SIZE; - - header.total_size = sizeof(header) + data_size + 4; /* "EOR" */ - header.trigger = DASD_EER_STATECHANGE; - do_gettimeofday(&tv); - header.tv_sec = tv.tv_sec; - header.tv_usec = tv.tv_usec; - strncpy(header.busid, device->cdev->dev.bus_id, DASD_EER_BUSID_SIZE); - - spin_lock_irqsave(&bufferlock, flags); - list_for_each_entry(eerb, &bufferlist, list) { - dasd_eer_start_record(eerb, header.total_size); - dasd_eer_write_buffer(eerb, sizeof(header),(char*)(&header)); - if (!snss_rc) - dasd_eer_write_buffer(eerb, SNSS_DATA_SIZE, cqr->data); - dasd_eer_write_buffer(eerb, 4,"EOR"); - } - spin_unlock_irqrestore(&bufferlock, flags); - - wake_up_interruptible(&dasd_eer_read_wait_queue); -} - -/* - * callback function for use with SNSS request - */ -static void -dasd_eer_SNSS_cb(struct dasd_ccw_req *cqr, void *data) -{ - struct dasd_device *device; - struct dasd_eer_private *private; - unsigned long irqflags; - - device = (struct dasd_device *)data; - private = (struct dasd_eer_private *)device->eer; - dasd_eer_write_SNSS_trigger(device, cqr); - spin_lock_irqsave(&snsslock, irqflags); - if(!test_and_clear_bit(SNSS_REQUESTED, &private->flags)) { - clear_bit(CQR_IN_USE, &private->flags); - spin_unlock_irqrestore(&snsslock, irqflags); - return; - }; - clear_bit(CQR_IN_USE, &private->flags); - spin_unlock_irqrestore(&snsslock, irqflags); - dasd_eer_sense_subsystem_status(device); - return; -} - -/* - * clean a used cqr before using it again - */ -static void -dasd_eer_clean_SNSS_request(struct dasd_ccw_req *cqr) -{ - struct ccw1 *cpaddr = cqr->cpaddr; - void *data = cqr->data; - - memset(cqr, 0, sizeof(struct dasd_ccw_req)); - memset(cpaddr, 0, sizeof(struct ccw1)); - memset(data, 0, SNSS_DATA_SIZE); - cqr->cpaddr = cpaddr; - cqr->data = data; - strncpy((char *) &cqr->magic, "ECKD", 4); - ASCEBC((char *) &cqr->magic, 4); - set_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); -} - -/* - * build and start an SNSS request - * This function is called from a work queue so we have to - * pass the dasd_device pointer as a void pointer. - */ -static void -dasd_eer_sense_subsystem_status(void *data) -{ - struct dasd_device *device; - struct dasd_eer_private *private; - struct dasd_ccw_req *cqr; - struct ccw1 *ccw; - unsigned long irqflags; - - device = (struct dasd_device *)data; - private = (struct dasd_eer_private *)device->eer; - if (!private) /* device not eer enabled any more */ - return; - cqr = private->cqr; - spin_lock_irqsave(&snsslock, irqflags); - if(test_and_set_bit(CQR_IN_USE, &private->flags)) { - set_bit(SNSS_REQUESTED, &private->flags); - spin_unlock_irqrestore(&snsslock, irqflags); - return; - }; - spin_unlock_irqrestore(&snsslock, irqflags); - dasd_eer_clean_SNSS_request(cqr); - cqr->device = device; - cqr->retries = 255; - cqr->expires = 10 * HZ; - - ccw = cqr->cpaddr; - ccw->cmd_code = DASD_ECKD_CCW_SNSS; - ccw->count = SNSS_DATA_SIZE; - ccw->flags = 0; - ccw->cda = (__u32)(addr_t)cqr->data; - - cqr->buildclk = get_clock(); - cqr->status = DASD_CQR_FILLED; - cqr->callback = dasd_eer_SNSS_cb; - cqr->callback_data = (void *)device; - dasd_add_request_head(cqr); - - return; -} - -/* - * This function is called for all triggers. It calls the appropriate - * function that writes the actual trigger records. - */ -static int -dasd_eer_write_trigger(struct dasd_eer_trigger *trigger) -{ - int rc; - struct dasd_eer_private *private = trigger->device->eer; - - switch (trigger->id) { - case DASD_EER_FATALERROR: - case DASD_EER_PPRCSUSPEND: - rc = dasd_eer_write_standard_trigger( - trigger->id, trigger->device, trigger->cqr); - break; - case DASD_EER_NOPATH: - rc = dasd_eer_write_standard_trigger( - trigger->id, trigger->device, NULL); - break; - case DASD_EER_STATECHANGE: - if (queue_work(dasd_eer_workqueue, &private->worker)) { - rc=0; - } else { - /* If the work_struct was already queued, it can't - * be queued again. But this is OK since we don't - * need to have it queued twice. - */ - rc = -EBUSY; - } - break; - default: /* unknown trigger, so we write it without any sense data */ - rc = dasd_eer_write_standard_trigger( - trigger->id, trigger->device, NULL); - break; - } - return rc; -} - -/* - * This function is registered with the dasd device driver and gets called - * for all dasd eer notifications. - */ -static int dasd_eer_notify(struct notifier_block *self, - unsigned long action, void *data) -{ - switch (action) { - case DASD_EER_DISABLE: - dasd_eer_disable_on_device((struct dasd_device *)data); - break; - case DASD_EER_TRIGGER: - dasd_eer_write_trigger((struct dasd_eer_trigger *)data); - break; - } - return NOTIFY_OK; -} - - -/*****************************************************************************/ -/* the device operations */ -/*****************************************************************************/ - -/* - * On the one side we need a lock to access our internal buffer, on the - * other side a copy_to_user can sleep. So we need to copy the data we have - * to transfer in a readbuffer, which is protected by the readbuffer_mutex. - */ -static char readbuffer[PAGE_SIZE]; -DECLARE_MUTEX(readbuffer_mutex); - - -static int -dasd_eer_open(struct inode *inp, struct file *filp) -{ - struct eerbuffer *eerb; - unsigned long flags; - - eerb = kmalloc(sizeof(struct eerbuffer), GFP_KERNEL); - eerb->head = 0; - eerb->tail = 0; - eerb->residual = 0; - eerb->buffer_page_count = 1; - eerb->buffersize = eerb->buffer_page_count * PAGE_SIZE; - eerb->buffer = kmalloc(eerb->buffer_page_count*sizeof(char*), - GFP_KERNEL); - if (!eerb->buffer) - return -ENOMEM; - if (dasd_eer_allocate_buffer_pages(eerb->buffer, - eerb->buffer_page_count)) { - kfree(eerb->buffer); - return -ENOMEM; - } - filp->private_data = eerb; - spin_lock_irqsave(&bufferlock, flags); - list_add(&eerb->list, &bufferlist); - spin_unlock_irqrestore(&bufferlock, flags); - - return nonseekable_open(inp,filp); -} - -static int -dasd_eer_close(struct inode *inp, struct file *filp) -{ - struct eerbuffer *eerb; - unsigned long flags; - - eerb = (struct eerbuffer *)filp->private_data; - spin_lock_irqsave(&bufferlock, flags); - list_del(&eerb->list); - spin_unlock_irqrestore(&bufferlock, flags); - dasd_eer_free_buffer_pages(eerb->buffer, eerb->buffer_page_count); - kfree(eerb->buffer); - kfree(eerb); - - return 0; -} - -static long -dasd_eer_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) -{ - int intval; - struct eerbuffer *eerb; - - eerb = (struct eerbuffer *)filp->private_data; - switch (cmd) { - case DASD_EER_PURGE: - dasd_eer_purge_buffer(eerb); - return 0; - case DASD_EER_SETBUFSIZE: - if (get_user(intval, (int __user *)arg)) - return -EFAULT; - return dasd_eer_resize_buffer(eerb, intval); - default: - return -ENOIOCTLCMD; - } -} - -static ssize_t -dasd_eer_read(struct file *filp, char __user *buf, size_t count, loff_t *ppos) -{ - int tc,rc; - int tailcount,effective_count; - unsigned long flags; - struct eerbuffer *eerb; - - eerb = (struct eerbuffer *)filp->private_data; - if(down_interruptible(&readbuffer_mutex)) - return -ERESTARTSYS; - - spin_lock_irqsave(&bufferlock, flags); - - if (eerb->residual < 0) { /* the remainder of this record */ - /* has been deleted */ - eerb->residual = 0; - spin_unlock_irqrestore(&bufferlock, flags); - up(&readbuffer_mutex); - return -EIO; - } else if (eerb->residual > 0) { - /* OK we still have a second half of a record to deliver */ - effective_count = min(eerb->residual, (int)count); - eerb->residual -= effective_count; - } else { - tc = 0; - while (!tc) { - tc = dasd_eer_read_buffer(eerb, - sizeof(tailcount), (char*)(&tailcount)); - if (!tc) { - /* no data available */ - spin_unlock_irqrestore(&bufferlock, flags); - up(&readbuffer_mutex); - if (filp->f_flags & O_NONBLOCK) - return -EAGAIN; - rc = wait_event_interruptible( - dasd_eer_read_wait_queue, - eerb->head != eerb->tail); - if (rc) { - return rc; - } - if(down_interruptible(&readbuffer_mutex)) - return -ERESTARTSYS; - spin_lock_irqsave(&bufferlock, flags); - } - } - WARN_ON(tc != sizeof(tailcount)); - effective_count = min(tailcount,(int)count); - eerb->residual = tailcount - effective_count; - } - - tc = dasd_eer_read_buffer(eerb, effective_count, readbuffer); - WARN_ON(tc != effective_count); - - spin_unlock_irqrestore(&bufferlock, flags); - - if (copy_to_user(buf, readbuffer, effective_count)) { - up(&readbuffer_mutex); - return -EFAULT; - } - - up(&readbuffer_mutex); - return effective_count; -} - -static unsigned int -dasd_eer_poll (struct file *filp, poll_table *ptable) -{ - unsigned int mask; - unsigned long flags; - struct eerbuffer *eerb; - - eerb = (struct eerbuffer *)filp->private_data; - poll_wait(filp, &dasd_eer_read_wait_queue, ptable); - spin_lock_irqsave(&bufferlock, flags); - if (eerb->head != eerb->tail) - mask = POLLIN | POLLRDNORM ; - else - mask = 0; - spin_unlock_irqrestore(&bufferlock, flags); - return mask; -} - -static struct file_operations dasd_eer_fops = { - .open = &dasd_eer_open, - .release = &dasd_eer_close, - .unlocked_ioctl = &dasd_eer_ioctl, - .compat_ioctl = &dasd_eer_ioctl, - .read = &dasd_eer_read, - .poll = &dasd_eer_poll, - .owner = THIS_MODULE, -}; - -static struct miscdevice dasd_eer_dev = { - .minor = MISC_DYNAMIC_MINOR, - .name = "dasd_eer", - .fops = &dasd_eer_fops, -}; - - -/*****************************************************************************/ -/* Init and exit */ -/*****************************************************************************/ - -static int -__init dasd_eer_init(void) -{ - int rc; - - dasd_eer_workqueue = create_singlethread_workqueue("dasd_eer"); - if (!dasd_eer_workqueue) { - MESSAGE(KERN_ERR , "%s", "dasd_eer_init could not " - "create workqueue \n"); - rc = -ENOMEM; - goto out; - } - - rc = dasd_register_eer_notifier(&dasd_eer_nb); - if (rc) { - MESSAGE(KERN_ERR, "%s", "dasd_eer_init could not " - "register error reporting"); - goto queue; - } - - dasd_ioctl_no_register(THIS_MODULE, BIODASDEERSET, dasd_ioctl_set_eer); - dasd_ioctl_no_register(THIS_MODULE, BIODASDEERGET, dasd_ioctl_get_eer); - - /* we don't need our own character device, - * so we just register as misc device */ - rc = misc_register(&dasd_eer_dev); - if (rc) { - MESSAGE(KERN_ERR, "%s", "dasd_eer_init could not " - "register misc device"); - goto unregister; - } - - return 0; - -unregister: - dasd_unregister_eer_notifier(&dasd_eer_nb); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDEERSET, - dasd_ioctl_set_eer); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDEERGET, - dasd_ioctl_get_eer); -queue: - destroy_workqueue(dasd_eer_workqueue); -out: - return rc; - -} -module_init(dasd_eer_init); - -static void -__exit dasd_eer_exit(void) -{ - dasd_unregister_eer_notifier(&dasd_eer_nb); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDEERSET, - dasd_ioctl_set_eer); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDEERGET, - dasd_ioctl_get_eer); - destroy_workqueue(dasd_eer_workqueue); - - WARN_ON(misc_deregister(&dasd_eer_dev) != 0); -} -module_exit(dasd_eer_exit); diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index d1b08fa13fd..0592354cc60 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -275,34 +275,6 @@ struct dasd_discipline { extern struct dasd_discipline *dasd_diag_discipline_pointer; - -/* - * Notification numbers for extended error reporting notifications: - * The DASD_EER_DISABLE notification is sent before a dasd_device (and it's - * eer pointer) is freed. The error reporting module needs to do all necessary - * cleanup steps. - * The DASD_EER_TRIGGER notification sends the actual error reports (triggers). - */ -#define DASD_EER_DISABLE 0 -#define DASD_EER_TRIGGER 1 - -/* Trigger IDs for extended error reporting DASD_EER_TRIGGER notification */ -#define DASD_EER_FATALERROR 1 -#define DASD_EER_NOPATH 2 -#define DASD_EER_STATECHANGE 3 -#define DASD_EER_PPRCSUSPEND 4 - -/* - * The dasd_eer_trigger structure contains all data that we need to send - * along with an DASD_EER_TRIGGER notification. - */ -struct dasd_eer_trigger { - unsigned int id; - struct dasd_device *device; - struct dasd_ccw_req *cqr; -}; - - struct dasd_device { /* Block device stuff. */ struct gendisk *gdp; @@ -316,11 +288,9 @@ struct dasd_device { unsigned long flags; /* per device flags */ unsigned short features; /* copy of devmap-features (read-only!) */ - /* extended error reporting stuff (eer) */ - void *eer; - /* Device discipline stuff. */ struct dasd_discipline *discipline; + struct dasd_discipline *base_discipline; char *private; /* Device state and target state. */ @@ -519,12 +489,6 @@ int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *); int dasd_generic_set_offline (struct ccw_device *cdev); int dasd_generic_notify(struct ccw_device *, int); void dasd_generic_auto_online (struct ccw_driver *); -int dasd_register_eer_notifier(struct notifier_block *); -int dasd_unregister_eer_notifier(struct notifier_block *); -void dasd_write_eer_trigger(unsigned int , struct dasd_device *, - struct dasd_ccw_req *); - - /* externals in dasd_devmap.c */ extern int dasd_max_devindex; diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c index 45ce032772f..9ed37dc9a1b 100644 --- a/drivers/s390/cio/qdio.c +++ b/drivers/s390/cio/qdio.c @@ -165,8 +165,13 @@ qdio_do_eqbs(struct qdio_q *q, unsigned char *state, q_no = q->q_no; if(!q->is_input_q) q_no += irq->no_input_qs; +again: ccq = do_eqbs(irq->sch_token, state, q_no, start, cnt); rc = qdio_check_ccq(q, ccq); + if (rc == 1) { + QDIO_DBF_TEXT5(1,trace,"eqAGAIN"); + goto again; + } if (rc < 0) { QDIO_DBF_TEXT2(1,trace,"eqberr"); sprintf(dbf_text,"%2x,%2x,%d,%d",tmp_cnt, *cnt, ccq, q_no); @@ -195,8 +200,13 @@ qdio_do_sqbs(struct qdio_q *q, unsigned char state, q_no = q->q_no; if(!q->is_input_q) q_no += irq->no_input_qs; +again: ccq = do_sqbs(irq->sch_token, state, q_no, start, cnt); rc = qdio_check_ccq(q, ccq); + if (rc == 1) { + QDIO_DBF_TEXT5(1,trace,"sqAGAIN"); + goto again; + } if (rc < 0) { QDIO_DBF_TEXT3(1,trace,"sqberr"); sprintf(dbf_text,"%2x,%2x,%d,%d",tmp_cnt,*cnt,ccq,q_no); @@ -1187,8 +1197,7 @@ tiqdio_is_inbound_q_done(struct qdio_q *q) if (!no_used) return 1; - - if (!q->siga_sync) + if (!q->siga_sync && !irq->is_qebsm) /* we'll check for more primed buffers in qeth_stop_polling */ return 0; if (irq->is_qebsm) { diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 791c4dc550a..94f5e8ed83a 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -90,7 +90,7 @@ static int spi_suspend(struct device *dev, pm_message_t message) int value; struct spi_driver *drv = to_spi_driver(dev->driver); - if (!drv->suspend) + if (!drv || !drv->suspend) return 0; /* suspend will stop irqs and dma; no more i/o */ @@ -105,7 +105,7 @@ static int spi_resume(struct device *dev) int value; struct spi_driver *drv = to_spi_driver(dev->driver); - if (!drv->resume) + if (!drv || !drv->resume) return 0; /* resume may restart the i/o queue */ @@ -449,7 +449,6 @@ void spi_unregister_master(struct spi_master *master) { (void) device_for_each_child(master->cdev.dev, NULL, __unregister); class_device_unregister(&master->cdev); - master->cdev.dev = NULL; } EXPORT_SYMBOL_GPL(spi_unregister_master); diff --git a/drivers/video/aty/radeon_pm.c b/drivers/video/aty/radeon_pm.c index 556895e9964..1f8d805c61e 100644 --- a/drivers/video/aty/radeon_pm.c +++ b/drivers/video/aty/radeon_pm.c @@ -1321,8 +1321,6 @@ static void radeon_pm_full_reset_sdram(struct radeonfb_info *rinfo) mdelay( 15); } -#ifdef CONFIG_PPC_OF - static void radeon_pm_reset_pad_ctlr_strength(struct radeonfb_info *rinfo) { u32 tmp, tmp2; @@ -1836,6 +1834,8 @@ static void radeon_reinitialize_M10(struct radeonfb_info *rinfo) radeon_pm_m10_enable_lvds_spread_spectrum(rinfo); } +#ifdef CONFIG_PPC_OF + static void radeon_pm_m9p_reconfigure_mc(struct radeonfb_info *rinfo) { OUTREG(MC_CNTL, rinfo->save_regs[46]); @@ -2728,13 +2728,23 @@ void radeonfb_pm_init(struct radeonfb_info *rinfo, int dynclk) printk("radeonfb: Dynamic Clock Power Management disabled\n"); } +#if defined(CONFIG_PM) /* Check if we can power manage on suspend/resume. We can do * D2 on M6, M7 and M9, and we can resume from D3 cold a few other * "Mac" cards, but that's all. We need more infos about what the * BIOS does tho. Right now, all this PM stuff is pmac-only for that * reason. --BenH */ -#if defined(CONFIG_PM) && defined(CONFIG_PPC_PMAC) + /* Special case for Samsung P35 laptops + */ + if ((rinfo->pdev->vendor == PCI_VENDOR_ID_ATI) && + (rinfo->pdev->device == PCI_CHIP_RV350_NP) && + (rinfo->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG) && + (rinfo->pdev->subsystem_device == 0xc00c)) { + rinfo->reinit_func = radeon_reinitialize_M10; + rinfo->pm_mode |= radeon_pm_off; + } +#if defined(CONFIG_PPC_PMAC) if (_machine == _MACH_Pmac && rinfo->of_node) { if (rinfo->is_mobility && rinfo->pm_reg && rinfo->family <= CHIP_FAMILY_RV250) @@ -2778,7 +2788,8 @@ void radeonfb_pm_init(struct radeonfb_info *rinfo, int dynclk) OUTREG(TV_DAC_CNTL, INREG(TV_DAC_CNTL) | 0x07000000); #endif } -#endif /* defined(CONFIG_PM) && defined(CONFIG_PPC_PMAC) */ +#endif /* defined(CONFIG_PPC_PMAC) */ +#endif /* defined(CONFIG_PM) */ } void radeonfb_pm_exit(struct radeonfb_info *rinfo) diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index 5250c428fc1..ef338654914 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -66,7 +66,7 @@ static match_table_t tokens = { {Opt_afid, "afid=%u"}, {Opt_rfdno, "rfdno=%u"}, {Opt_wfdno, "wfdno=%u"}, - {Opt_debug, "debug=%u"}, + {Opt_debug, "debug=%x"}, {Opt_name, "name=%s"}, {Opt_remotename, "aname=%s"}, {Opt_unix, "proto=unix"}, diff --git a/include/asm-m32r/system.h b/include/asm-m32r/system.h index 06c12a037cb..d6a2c613be6 100644 --- a/include/asm-m32r/system.h +++ b/include/asm-m32r/system.h @@ -239,7 +239,7 @@ __cmpxchg_u32(volatile unsigned int *p, unsigned int old, unsigned int new) " bra 2f; \n" " .fillinsn \n" "1:" - M32R_UNLOCK" %2, @%1; \n" + M32R_UNLOCK" %0, @%1; \n" " .fillinsn \n" "2:" : "=&r" (retval) diff --git a/include/asm-s390/dasd.h b/include/asm-s390/dasd.h index c744ff33b1d..1630c26e8f4 100644 --- a/include/asm-s390/dasd.h +++ b/include/asm-s390/dasd.h @@ -204,8 +204,7 @@ typedef struct attrib_data_t { * * Here ist how the ioctl-nr should be used: * 0 - 31 DASD driver itself - * 32 - 229 still open - * 230 - 239 DASD extended error reporting + * 32 - 239 still open * 240 - 255 reserved for EMC *******************************************************************************/ @@ -237,22 +236,12 @@ typedef struct attrib_data_t { #define BIODASDPSRD _IOR(DASD_IOCTL_LETTER,4,dasd_rssd_perf_stats_t) /* Get Attributes (cache operations) */ #define BIODASDGATTR _IOR(DASD_IOCTL_LETTER,5,attrib_data_t) -/* retrieve extended error-reporting value */ -#define BIODASDEERGET _IOR(DASD_IOCTL_LETTER,6,int) /* #define BIODASDFORMAT _IOW(IOCTL_LETTER,0,format_data_t) , deprecated */ #define BIODASDFMT _IOW(DASD_IOCTL_LETTER,1,format_data_t) /* Set Attributes (cache operations) */ #define BIODASDSATTR _IOW(DASD_IOCTL_LETTER,2,attrib_data_t) -/* retrieve extended error-reporting value */ -#define BIODASDEERSET _IOW(DASD_IOCTL_LETTER,3,int) - - -/* remove all records from the eer buffer */ -#define DASD_EER_PURGE _IO(DASD_IOCTL_LETTER,230) -/* set the number of pages that are used for the internal eer buffer */ -#define DASD_EER_SETBUFSIZE _IOW(DASD_IOCTL_LETTER,230,int) #endif /* DASD_H */ diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 84d3d9f034c..d3bc25e6d27 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -427,7 +427,8 @@ extern int acpi_mp_config; extern struct acpi_table_mcfg_config *pci_mmcfg_config; extern int pci_mmcfg_config_num; -extern int sbf_port ; +extern int sbf_port; +extern unsigned long acpi_video_flags; #else /* !CONFIG_ACPI */ diff --git a/include/linux/mm.h b/include/linux/mm.h index 26e1663a5cb..498ff8778fb 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1051,7 +1051,11 @@ int shrink_slab(unsigned long scanned, gfp_t gfp_mask, void drop_pagecache(void); void drop_slab(void); +#ifndef CONFIG_MMU +#define randomize_va_space 0 +#else extern int randomize_va_space; +#endif #endif /* __KERNEL__ */ #endif /* _LINUX_MM_H */ diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 547d649b274..b4dc6e2e10c 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -398,7 +398,7 @@ extern struct inode_operations nfs_symlink_inode_operations; extern int nfs_register_sysctl(void); extern void nfs_unregister_sysctl(void); #else -#define nfs_register_sysctl() do { } while(0) +#define nfs_register_sysctl() 0 #define nfs_unregister_sysctl() do { } while(0) #endif diff --git a/include/linux/swap.h b/include/linux/swap.h index f3e17d5963c..d572b19afb7 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -147,7 +147,7 @@ struct swap_list_t { #define vm_swap_full() (nr_swap_pages*2 < total_swap_pages) /* linux/mm/oom_kill.c */ -extern void out_of_memory(gfp_t gfp_mask, int order); +extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, int order); /* linux/mm/memory.c */ extern void swapin_readahead(swp_entry_t, unsigned long, struct vm_area_struct *); diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 32a4139c4ad..0e92bf7ec28 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -146,6 +146,7 @@ enum KERN_RANDOMIZE=68, /* int: randomize virtual address space */ KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */ KERN_SPIN_RETRY=70, /* int: number of spinlock retries */ + KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */ }; diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index 17313b99e53..1067090db6b 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -104,6 +104,8 @@ cond_syscall(sys_setreuid16); cond_syscall(sys_setuid16); cond_syscall(sys_vm86old); cond_syscall(sys_vm86); +cond_syscall(compat_sys_ipc); +cond_syscall(compat_sys_sysctl); /* arch-specific weak syscall entries */ cond_syscall(sys_pciconfig_read); diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 7654d55c47f..c05a2b7125e 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -44,14 +44,12 @@ #include <linux/limits.h> #include <linux/dcache.h> #include <linux/syscalls.h> +#include <linux/nfs_fs.h> +#include <linux/acpi.h> #include <asm/uaccess.h> #include <asm/processor.h> -#ifdef CONFIG_ROOT_NFS -#include <linux/nfs_fs.h> -#endif - #if defined(CONFIG_SYSCTL) /* External variables not in a header file. */ @@ -638,6 +636,7 @@ static ctl_table kern_table[] = { .proc_handler = &proc_dointvec, }, #endif +#if defined(CONFIG_MMU) { .ctl_name = KERN_RANDOMIZE, .procname = "randomize_va_space", @@ -646,6 +645,7 @@ static ctl_table kern_table[] = { .mode = 0644, .proc_handler = &proc_dointvec, }, +#endif #if defined(CONFIG_S390) && defined(CONFIG_SMP) { .ctl_name = KERN_SPIN_RETRY, @@ -656,6 +656,16 @@ static ctl_table kern_table[] = { .proc_handler = &proc_dointvec, }, #endif +#ifdef CONFIG_ACPI_SLEEP + { + .ctl_name = KERN_ACPI_VIDEO_FLAGS, + .procname = "acpi_video_flags", + .data = &acpi_video_flags, + .maxlen = sizeof (unsigned long), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, +#endif { .ctl_name = 0 } }; diff --git a/mm/mempolicy.c b/mm/mempolicy.c index bedfa4f09c8..880831bd300 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -587,7 +587,7 @@ redo: } list_add(&page->lru, &newlist); nr_pages++; - if (nr_pages > MIGRATE_CHUNK_SIZE); + if (nr_pages > MIGRATE_CHUNK_SIZE) break; } err = migrate_pages(pagelist, &newlist, &moved, &failed); @@ -808,7 +808,7 @@ static int get_nodes(nodemask_t *nodes, const unsigned long __user *nmask, nodes_clear(*nodes); if (maxnode == 0 || !nmask) return 0; - if (maxnode > PAGE_SIZE) + if (maxnode > PAGE_SIZE*BITS_PER_BYTE) return -EINVAL; nlongs = BITS_TO_LONGS(maxnode); diff --git a/mm/nommu.c b/mm/nommu.c index c10262d6823..99d21020ec9 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -57,6 +57,8 @@ EXPORT_SYMBOL(vmalloc); EXPORT_SYMBOL(vfree); EXPORT_SYMBOL(vmalloc_to_page); EXPORT_SYMBOL(vmalloc_32); +EXPORT_SYMBOL(vmap); +EXPORT_SYMBOL(vunmap); /* * Handle all mappings that got truncated by a "truncate()" diff --git a/mm/oom_kill.c b/mm/oom_kill.c index b05ab8f2a56..8123fad5a48 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -58,15 +58,17 @@ unsigned long badness(struct task_struct *p, unsigned long uptime) /* * Processes which fork a lot of child processes are likely - * a good choice. We add the vmsize of the children if they + * a good choice. We add half the vmsize of the children if they * have an own mm. This prevents forking servers to flood the - * machine with an endless amount of children + * machine with an endless amount of children. In case a single + * child is eating the vast majority of memory, adding only half + * to the parents will make the child our kill candidate of choice. */ list_for_each(tsk, &p->children) { struct task_struct *chld; chld = list_entry(tsk, struct task_struct, sibling); if (chld->mm != p->mm && chld->mm) - points += chld->mm->total_vm; + points += chld->mm->total_vm/2 + 1; } /* @@ -131,17 +133,47 @@ unsigned long badness(struct task_struct *p, unsigned long uptime) } /* + * Types of limitations to the nodes from which allocations may occur + */ +#define CONSTRAINT_NONE 1 +#define CONSTRAINT_MEMORY_POLICY 2 +#define CONSTRAINT_CPUSET 3 + +/* + * Determine the type of allocation constraint. + */ +static inline int constrained_alloc(struct zonelist *zonelist, gfp_t gfp_mask) +{ +#ifdef CONFIG_NUMA + struct zone **z; + nodemask_t nodes = node_online_map; + + for (z = zonelist->zones; *z; z++) + if (cpuset_zone_allowed(*z, gfp_mask)) + node_clear((*z)->zone_pgdat->node_id, + nodes); + else + return CONSTRAINT_CPUSET; + + if (!nodes_empty(nodes)) + return CONSTRAINT_MEMORY_POLICY; +#endif + + return CONSTRAINT_NONE; +} + +/* * Simple selection loop. We chose the process with the highest * number of 'points'. We expect the caller will lock the tasklist. * * (not docbooked, we don't want this one cluttering up the manual) */ -static struct task_struct * select_bad_process(void) +static struct task_struct *select_bad_process(unsigned long *ppoints) { - unsigned long maxpoints = 0; struct task_struct *g, *p; struct task_struct *chosen = NULL; struct timespec uptime; + *ppoints = 0; do_posix_clock_monotonic_gettime(&uptime); do_each_thread(g, p) { @@ -169,9 +201,9 @@ static struct task_struct * select_bad_process(void) return p; points = badness(p, uptime.tv_sec); - if (points > maxpoints || !chosen) { + if (points > *ppoints || !chosen) { chosen = p; - maxpoints = points; + *ppoints = points; } } while_each_thread(g, p); return chosen; @@ -182,7 +214,7 @@ static struct task_struct * select_bad_process(void) * CAP_SYS_RAW_IO set, send SIGTERM instead (but it's unlikely that * we select a process with CAP_SYS_RAW_IO set). */ -static void __oom_kill_task(task_t *p) +static void __oom_kill_task(task_t *p, const char *message) { if (p->pid == 1) { WARN_ON(1); @@ -198,8 +230,8 @@ static void __oom_kill_task(task_t *p) return; } task_unlock(p); - printk(KERN_ERR "Out of Memory: Killed process %d (%s).\n", - p->pid, p->comm); + printk(KERN_ERR "%s: Killed process %d (%s).\n", + message, p->pid, p->comm); /* * We give our sacrificial lamb high priority and access to @@ -212,7 +244,7 @@ static void __oom_kill_task(task_t *p) force_sig(SIGKILL, p); } -static struct mm_struct *oom_kill_task(task_t *p) +static struct mm_struct *oom_kill_task(task_t *p, const char *message) { struct mm_struct *mm = get_task_mm(p); task_t * g, * q; @@ -224,35 +256,38 @@ static struct mm_struct *oom_kill_task(task_t *p) return NULL; } - __oom_kill_task(p); + __oom_kill_task(p, message); /* * kill all processes that share the ->mm (i.e. all threads), * but are in a different thread group */ do_each_thread(g, q) if (q->mm == mm && q->tgid != p->tgid) - __oom_kill_task(q); + __oom_kill_task(q, message); while_each_thread(g, q); return mm; } -static struct mm_struct *oom_kill_process(struct task_struct *p) +static struct mm_struct *oom_kill_process(struct task_struct *p, + unsigned long points, const char *message) { struct mm_struct *mm; struct task_struct *c; struct list_head *tsk; + printk(KERN_ERR "Out of Memory: Kill process %d (%s) score %li and " + "children.\n", p->pid, p->comm, points); /* Try to kill a child first */ list_for_each(tsk, &p->children) { c = list_entry(tsk, struct task_struct, sibling); if (c->mm == p->mm) continue; - mm = oom_kill_task(c); + mm = oom_kill_task(c, message); if (mm) return mm; } - return oom_kill_task(p); + return oom_kill_task(p, message); } /** @@ -263,10 +298,11 @@ static struct mm_struct *oom_kill_process(struct task_struct *p) * OR try to be smart about which process to kill. Note that we * don't have to be perfect here, we just have to be good. */ -void out_of_memory(gfp_t gfp_mask, int order) +void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, int order) { struct mm_struct *mm = NULL; - task_t * p; + task_t *p; + unsigned long points; if (printk_ratelimit()) { printk("oom-killer: gfp_mask=0x%x, order=%d\n", @@ -277,25 +313,48 @@ void out_of_memory(gfp_t gfp_mask, int order) cpuset_lock(); read_lock(&tasklist_lock); + + /* + * Check if there were limitations on the allocation (only relevant for + * NUMA) that may require different handling. + */ + switch (constrained_alloc(zonelist, gfp_mask)) { + case CONSTRAINT_MEMORY_POLICY: + mm = oom_kill_process(current, points, + "No available memory (MPOL_BIND)"); + break; + + case CONSTRAINT_CPUSET: + mm = oom_kill_process(current, points, + "No available memory in cpuset"); + break; + + case CONSTRAINT_NONE: retry: - p = select_bad_process(); + /* + * Rambo mode: Shoot down a process and hope it solves whatever + * issues we may have. + */ + p = select_bad_process(&points); - if (PTR_ERR(p) == -1UL) - goto out; + if (PTR_ERR(p) == -1UL) + goto out; - /* Found nothing?!?! Either we hang forever, or we panic. */ - if (!p) { - read_unlock(&tasklist_lock); - cpuset_unlock(); - panic("Out of memory and no killable processes...\n"); - } + /* Found nothing?!?! Either we hang forever, or we panic. */ + if (!p) { + read_unlock(&tasklist_lock); + cpuset_unlock(); + panic("Out of memory and no killable processes...\n"); + } - mm = oom_kill_process(p); - if (!mm) - goto retry; + mm = oom_kill_process(p, points, "Out of memory"); + if (!mm) + goto retry; + + break; + } - out: - read_unlock(&tasklist_lock); +out: cpuset_unlock(); if (mm) mmput(mm); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 208812b2559..791690d7d3f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1015,7 +1015,7 @@ rebalance: if (page) goto got_pg; - out_of_memory(gfp_mask, order); + out_of_memory(zonelist, gfp_mask, order); goto restart; } diff --git a/sound/core/control_compat.c b/sound/core/control_compat.c index 418c6d4e5da..a529b62972b 100644 --- a/sound/core/control_compat.c +++ b/sound/core/control_compat.c @@ -167,7 +167,7 @@ static int get_ctl_type(struct snd_card *card, struct snd_ctl_elem_id *id, int *countp) { struct snd_kcontrol *kctl; - struct snd_ctl_elem_info info; + struct snd_ctl_elem_info *info; int err; down_read(&card->controls_rwsem); @@ -176,13 +176,19 @@ static int get_ctl_type(struct snd_card *card, struct snd_ctl_elem_id *id, up_read(&card->controls_rwsem); return -ENXIO; } - info.id = *id; - err = kctl->info(kctl, &info); + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (info == NULL) { + up_read(&card->controls_rwsem); + return -ENOMEM; + } + info->id = *id; + err = kctl->info(kctl, info); up_read(&card->controls_rwsem); if (err >= 0) { - err = info.type; - *countp = info.count; + err = info->type; + *countp = info->count; } + kfree(info); return err; } |