diff options
Diffstat (limited to 'drivers')
32 files changed, 269 insertions, 189 deletions
diff --git a/drivers/Kconfig b/drivers/Kconfig index 78a956e286e..8d96238549f 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -120,6 +120,8 @@ source "drivers/vfio/Kconfig" source "drivers/vlynq/Kconfig" +source "drivers/virt/Kconfig" + source "drivers/virtio/Kconfig" source "drivers/hv/Kconfig" @@ -144,8 +146,6 @@ source "drivers/remoteproc/Kconfig" source "drivers/rpmsg/Kconfig" -source "drivers/virt/Kconfig" - source "drivers/devfreq/Kconfig" source "drivers/extcon/Kconfig" diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c index 42e67ad6bd2..ab41be625a5 100644 --- a/drivers/block/aoe/aoechr.c +++ b/drivers/block/aoe/aoechr.c @@ -139,13 +139,12 @@ bail: spin_unlock_irqrestore(&emsgs_lock, flags); return; } - mp = kmalloc(n, GFP_ATOMIC); + mp = kmemdup(msg, n, GFP_ATOMIC); if (mp == NULL) { printk(KERN_ERR "aoe: allocation failure, len=%ld\n", n); goto bail; } - memcpy(mp, msg, n); em->msg = mp; em->flags |= EMFL_VALID; em->len = n; diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 7fecc784be0..037288e7874 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -856,6 +856,8 @@ static int __init nbd_init(void) disk->queue->limits.discard_granularity = 512; disk->queue->limits.max_discard_sectors = UINT_MAX; disk->queue->limits.discard_zeroes_data = 0; + blk_queue_max_hw_sectors(disk->queue, 65536); + disk->queue->limits.max_sectors = 256; } if (register_blkdev(NBD_MAJOR, "nbd")) { diff --git a/drivers/char/random.c b/drivers/char/random.c index 32a6c576495..cd9a6211dca 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1485,6 +1485,7 @@ unsigned int get_random_int(void) return ret; } +EXPORT_SYMBOL(get_random_int); /* * randomize_range() returns a start address such that diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c index 4cd392dbf11..b95159b33c3 100644 --- a/drivers/firmware/dmi_scan.c +++ b/drivers/firmware/dmi_scan.c @@ -22,6 +22,9 @@ static u16 __initdata dmi_ver; */ static int dmi_initialized; +/* DMI system identification string used during boot */ +static char dmi_ids_string[128] __initdata; + static const char * __init dmi_string_nosave(const struct dmi_header *dm, u8 s) { const u8 *bp = ((u8 *) dm) + dm->length; @@ -376,99 +379,103 @@ static void __init dmi_decode(const struct dmi_header *dm, void *dummy) } } -static void __init print_filtered(const char *info) +static int __init print_filtered(char *buf, size_t len, const char *info) { + int c = 0; const char *p; if (!info) - return; + return c; for (p = info; *p; p++) if (isprint(*p)) - printk(KERN_CONT "%c", *p); + c += scnprintf(buf + c, len - c, "%c", *p); else - printk(KERN_CONT "\\x%02x", *p & 0xff); + c += scnprintf(buf + c, len - c, "\\x%02x", *p & 0xff); + return c; } -static void __init dmi_dump_ids(void) +static void __init dmi_format_ids(char *buf, size_t len) { + int c = 0; const char *board; /* Board Name is optional */ - printk(KERN_DEBUG "DMI: "); - print_filtered(dmi_get_system_info(DMI_SYS_VENDOR)); - printk(KERN_CONT " "); - print_filtered(dmi_get_system_info(DMI_PRODUCT_NAME)); + c += print_filtered(buf + c, len - c, + dmi_get_system_info(DMI_SYS_VENDOR)); + c += scnprintf(buf + c, len - c, " "); + c += print_filtered(buf + c, len - c, + dmi_get_system_info(DMI_PRODUCT_NAME)); + board = dmi_get_system_info(DMI_BOARD_NAME); if (board) { - printk(KERN_CONT "/"); - print_filtered(board); + c += scnprintf(buf + c, len - c, "/"); + c += print_filtered(buf + c, len - c, board); } - printk(KERN_CONT ", BIOS "); - print_filtered(dmi_get_system_info(DMI_BIOS_VERSION)); - printk(KERN_CONT " "); - print_filtered(dmi_get_system_info(DMI_BIOS_DATE)); - printk(KERN_CONT "\n"); + c += scnprintf(buf + c, len - c, ", BIOS "); + c += print_filtered(buf + c, len - c, + dmi_get_system_info(DMI_BIOS_VERSION)); + c += scnprintf(buf + c, len - c, " "); + c += print_filtered(buf + c, len - c, + dmi_get_system_info(DMI_BIOS_DATE)); } -static int __init dmi_present(const char __iomem *p) +static int __init dmi_present(const u8 *buf) { - u8 buf[15]; + int smbios_ver; + + if (memcmp(buf, "_SM_", 4) == 0 && + buf[5] < 32 && dmi_checksum(buf, buf[5])) { + smbios_ver = (buf[6] << 8) + buf[7]; + + /* Some BIOS report weird SMBIOS version, fix that up */ + switch (smbios_ver) { + case 0x021F: + case 0x0221: + pr_debug("SMBIOS version fixup(2.%d->2.%d)\n", + smbios_ver & 0xFF, 3); + smbios_ver = 0x0203; + break; + case 0x0233: + pr_debug("SMBIOS version fixup(2.%d->2.%d)\n", 51, 6); + smbios_ver = 0x0206; + break; + } + } else { + smbios_ver = 0; + } - memcpy_fromio(buf, p, 15); - if (dmi_checksum(buf, 15)) { + buf += 16; + + if (memcmp(buf, "_DMI_", 5) == 0 && dmi_checksum(buf, 15)) { dmi_num = (buf[13] << 8) | buf[12]; dmi_len = (buf[7] << 8) | buf[6]; dmi_base = (buf[11] << 24) | (buf[10] << 16) | (buf[9] << 8) | buf[8]; if (dmi_walk_early(dmi_decode) == 0) { - if (dmi_ver) + if (smbios_ver) { + dmi_ver = smbios_ver; pr_info("SMBIOS %d.%d present.\n", dmi_ver >> 8, dmi_ver & 0xFF); - else { + } else { dmi_ver = (buf[14] & 0xF0) << 4 | (buf[14] & 0x0F); pr_info("Legacy DMI %d.%d present.\n", dmi_ver >> 8, dmi_ver & 0xFF); } - dmi_dump_ids(); + dmi_format_ids(dmi_ids_string, sizeof(dmi_ids_string)); + printk(KERN_DEBUG "DMI: %s\n", dmi_ids_string); return 0; } } - dmi_ver = 0; - return 1; -} - -static int __init smbios_present(const char __iomem *p) -{ - u8 buf[32]; - memcpy_fromio(buf, p, 32); - if ((buf[5] < 32) && dmi_checksum(buf, buf[5])) { - dmi_ver = (buf[6] << 8) + buf[7]; - - /* Some BIOS report weird SMBIOS version, fix that up */ - switch (dmi_ver) { - case 0x021F: - case 0x0221: - pr_debug("SMBIOS version fixup(2.%d->2.%d)\n", - dmi_ver & 0xFF, 3); - dmi_ver = 0x0203; - break; - case 0x0233: - pr_debug("SMBIOS version fixup(2.%d->2.%d)\n", 51, 6); - dmi_ver = 0x0206; - break; - } - return memcmp(p + 16, "_DMI_", 5) || dmi_present(p + 16); - } return 1; } void __init dmi_scan_machine(void) { char __iomem *p, *q; - int rc; + char buf[32]; if (efi_enabled(EFI_CONFIG_TABLES)) { if (efi.smbios == EFI_INVALID_TABLE_ADDR) @@ -481,10 +488,10 @@ void __init dmi_scan_machine(void) p = dmi_ioremap(efi.smbios, 32); if (p == NULL) goto error; - - rc = smbios_present(p); + memcpy_fromio(buf, p, 32); dmi_iounmap(p, 32); - if (!rc) { + + if (!dmi_present(buf)) { dmi_available = 1; goto out; } @@ -499,18 +506,15 @@ void __init dmi_scan_machine(void) if (p == NULL) goto error; + memset(buf, 0, 16); for (q = p; q < p + 0x10000; q += 16) { - if (memcmp(q, "_SM_", 4) == 0 && q - p <= 0xFFE0) - rc = smbios_present(q); - else if (memcmp(q, "_DMI_", 5) == 0) - rc = dmi_present(q); - else - continue; - if (!rc) { + memcpy_fromio(buf + 16, q, 16); + if (!dmi_present(buf)) { dmi_available = 1; dmi_iounmap(p, 0x10000); goto out; } + memcpy(buf, buf + 16, 16); } dmi_iounmap(p, 0x10000); } @@ -521,6 +525,19 @@ void __init dmi_scan_machine(void) } /** + * dmi_set_dump_stack_arch_desc - set arch description for dump_stack() + * + * Invoke dump_stack_set_arch_desc() with DMI system information so that + * DMI identifiers are printed out on task dumps. Arch boot code should + * call this function after dmi_scan_machine() if it wants to print out DMI + * identifiers on task dumps. + */ +void __init dmi_set_dump_stack_arch_desc(void) +{ + dump_stack_set_arch_desc("%s", dmi_ids_string); +} + +/** * dmi_matches - check if dmi_system_id structure matches system DMI data * @dmi: pointer to the dmi_system_id structure to check */ diff --git a/drivers/memstick/host/r592.c b/drivers/memstick/host/r592.c index a7c5b31c0d5..9718661c1fb 100644 --- a/drivers/memstick/host/r592.c +++ b/drivers/memstick/host/r592.c @@ -847,7 +847,7 @@ static void r592_remove(struct pci_dev *pdev) dev->dummy_dma_page_physical_address); } -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP static int r592_suspend(struct device *core_dev) { struct pci_dev *pdev = to_pci_dev(core_dev); @@ -870,10 +870,10 @@ static int r592_resume(struct device *core_dev) r592_update_card_detect(dev); return 0; } - -SIMPLE_DEV_PM_OPS(r592_pm_ops, r592_suspend, r592_resume); #endif +static SIMPLE_DEV_PM_OPS(r592_pm_ops, r592_suspend, r592_resume); + MODULE_DEVICE_TABLE(pci, r592_pci_id_tbl); static struct pci_driver r852_pci_driver = { @@ -881,9 +881,7 @@ static struct pci_driver r852_pci_driver = { .id_table = r592_pci_id_tbl, .probe = r592_probe, .remove = r592_remove, -#ifdef CONFIG_PM .driver.pm = &r592_pm_ops, -#endif }; static __init int r592_module_init(void) diff --git a/drivers/message/i2o/i2o_config.c b/drivers/message/i2o/i2o_config.c index 5451beff183..a60c188c2bd 100644 --- a/drivers/message/i2o/i2o_config.c +++ b/drivers/message/i2o/i2o_config.c @@ -687,6 +687,11 @@ static int i2o_cfg_passthru32(struct file *file, unsigned cmnd, } size = size >> 16; size *= 4; + if (size > sizeof(rmsg)) { + rcode = -EINVAL; + goto sg_list_cleanup; + } + /* Copy in the user's I2O command */ if (copy_from_user(rmsg, user_msg, size)) { rcode = -EFAULT; @@ -922,6 +927,11 @@ static int i2o_cfg_passthru(unsigned long arg) } size = size >> 16; size *= 4; + if (size > sizeof(rmsg)) { + rcode = -EFAULT; + goto sg_list_cleanup; + } + /* Copy in the user's I2O command */ if (copy_from_user(rmsg, user_msg, size)) { rcode = -EFAULT; diff --git a/drivers/net/ethernet/ibm/emac/debug.c b/drivers/net/ethernet/ibm/emac/debug.c index b16b4828b64..a559f326bf6 100644 --- a/drivers/net/ethernet/ibm/emac/debug.c +++ b/drivers/net/ethernet/ibm/emac/debug.c @@ -245,7 +245,7 @@ static void emac_sysrq_handler(int key) static struct sysrq_key_op emac_sysrq_op = { .handler = emac_sysrq_handler, - .help_msg = "emaC", + .help_msg = "emac(c)", .action_msg = "Show EMAC(s) status", }; diff --git a/drivers/pps/Kconfig b/drivers/pps/Kconfig index 982d16b5a84..7512e98e931 100644 --- a/drivers/pps/Kconfig +++ b/drivers/pps/Kconfig @@ -20,10 +20,10 @@ config PPS To compile this driver as a module, choose M here: the module will be called pps_core.ko. +if PPS config PPS_DEBUG bool "PPS debugging messages" - depends on PPS help Say Y here if you want the PPS support to produce a bunch of debug messages to the system log. Select this if you are having a @@ -31,13 +31,15 @@ config PPS_DEBUG config NTP_PPS bool "PPS kernel consumer support" - depends on PPS && !NO_HZ + depends on !NO_HZ help This option adds support for direct in-kernel time synchronization using an external PPS signal. It doesn't work on tickless systems at the moment. +endif + source drivers/pps/clients/Kconfig source drivers/pps/generators/Kconfig diff --git a/drivers/pps/kc.c b/drivers/pps/kc.c index 079e930b193..e219db1f1c8 100644 --- a/drivers/pps/kc.c +++ b/drivers/pps/kc.c @@ -34,10 +34,10 @@ */ /* state variables to bind kernel consumer */ -DEFINE_SPINLOCK(pps_kc_hardpps_lock); +static DEFINE_SPINLOCK(pps_kc_hardpps_lock); /* PPS API (RFC 2783): current source and mode for kernel consumer */ -struct pps_device *pps_kc_hardpps_dev; /* unique pointer to device */ -int pps_kc_hardpps_mode; /* mode bits for kernel consumer */ +static struct pps_device *pps_kc_hardpps_dev; /* unique pointer to device */ +static int pps_kc_hardpps_mode; /* mode bits for kernel consumer */ /* pps_kc_bind - control PPS kernel consumer binding * @pps: the PPS source diff --git a/drivers/staging/speakup/kobjects.c b/drivers/staging/speakup/kobjects.c index d6d9264e4ca..943b6c134a2 100644 --- a/drivers/staging/speakup/kobjects.c +++ b/drivers/staging/speakup/kobjects.c @@ -15,6 +15,7 @@ #include <linux/kernel.h> #include <linux/kobject.h> #include <linux/string.h> +#include <linux/string_helpers.h> #include <linux/sysfs.h> #include <linux/ctype.h> @@ -417,7 +418,7 @@ static ssize_t synth_direct_store(struct kobject *kobj, bytes = min_t(size_t, len, 250); strncpy(tmp, ptr, bytes); tmp[bytes] = '\0'; - spk_xlate(tmp); + string_unescape_any_inplace(tmp); synth_printf("%s", tmp); ptr += bytes; len -= bytes; @@ -605,7 +606,8 @@ ssize_t spk_var_store(struct kobject *kobj, struct kobj_attribute *attr, if (param->data == NULL) return 0; ret = 0; - cp = spk_xlate((char *) buf); + cp = (char *)buf; + string_unescape_any_inplace(cp); spk_lock(flags); switch (param->var_type) { diff --git a/drivers/staging/speakup/speakup.h b/drivers/staging/speakup/speakup.h index c387a02fc1c..0126f714821 100644 --- a/drivers/staging/speakup/speakup.h +++ b/drivers/staging/speakup/speakup.h @@ -54,7 +54,6 @@ void spk_get_index_count(int *linecount, int *sentcount); extern int spk_set_key_info(const u_char *key_info, u_char *k_buffer); extern char *spk_strlwr(char *s); extern char *spk_s2uchar(char *start, char *dest); -extern char *spk_xlate(char *s); extern int speakup_kobj_init(void); extern void speakup_kobj_exit(void); extern int spk_chartab_get_value(char *keyword); diff --git a/drivers/staging/speakup/varhandlers.c b/drivers/staging/speakup/varhandlers.c index 0099cb12e56..7f6288fc229 100644 --- a/drivers/staging/speakup/varhandlers.c +++ b/drivers/staging/speakup/varhandlers.c @@ -328,49 +328,3 @@ char *spk_s2uchar(char *start, char *dest) *dest = (u_char)val; return start; } - -char *spk_xlate(char *s) -{ - static const char finds[] = "nrtvafe"; - static const char subs[] = "\n\r\t\013\001\014\033"; - static const char hx[] = "0123456789abcdefABCDEF"; - char *p = s, *p1, *p2, c; - int num; - while ((p = strchr(p, '\\'))) { - p1 = p+1; - p2 = strchr(finds, *p1); - if (p2) { - *p++ = subs[p2-finds]; - p1++; - } else if (*p1 >= '0' && *p1 <= '7') { - num = (*p1++)&7; - while (num < 32 && *p1 >= '0' && *p1 <= '7') { - num <<= 3; - num += (*p1++)&7; - } - *p++ = num; - } else if (*p1 == 'x' && - strchr(hx, p1[1]) && strchr(hx, p1[2])) { - p1++; - c = *p1++; - if (c > '9') - c = (c - '7') & 0x0f; - else - c -= '0'; - num = c << 4; - c = *p1++; - if (c > '9') - c = (c-'7')&0x0f; - else - c -= '0'; - num += c; - *p++ = num; - } else - *p++ = *p1++; - p2 = p; - while (*p1) - *p2++ = *p1++; - *p2 = '\0'; - } - return s; -} diff --git a/drivers/staging/zcache/Kconfig b/drivers/staging/zcache/Kconfig index 05e87a1e5d9..2d7b2da3b9e 100644 --- a/drivers/staging/zcache/Kconfig +++ b/drivers/staging/zcache/Kconfig @@ -1,5 +1,5 @@ config ZCACHE - bool "Dynamic compression of swap pages and clean pagecache pages" + tristate "Dynamic compression of swap pages and clean pagecache pages" depends on CRYPTO=y && SWAP=y && CLEANCACHE && FRONTSWAP select CRYPTO_LZO default n @@ -19,8 +19,8 @@ config ZCACHE_DEBUG how zcache is doing. You probably want to set this to 'N'. config RAMSTER - bool "Cross-machine RAM capacity sharing, aka peer-to-peer tmem" - depends on CONFIGFS_FS=y && SYSFS=y && !HIGHMEM && ZCACHE=y + tristate "Cross-machine RAM capacity sharing, aka peer-to-peer tmem" + depends on CONFIGFS_FS=y && SYSFS=y && !HIGHMEM && ZCACHE depends on NET # must ensure struct page is 8-byte aligned select HAVE_ALIGNED_STRUCT_PAGE if !64BIT diff --git a/drivers/staging/zcache/ramster.h b/drivers/staging/zcache/ramster.h index 1b71aea2ff6..e1f91d5a0f6 100644 --- a/drivers/staging/zcache/ramster.h +++ b/drivers/staging/zcache/ramster.h @@ -11,10 +11,14 @@ #ifndef _ZCACHE_RAMSTER_H_ #define _ZCACHE_RAMSTER_H_ +#ifdef CONFIG_RAMSTER_MODULE +#define CONFIG_RAMSTER +#endif + #ifdef CONFIG_RAMSTER #include "ramster/ramster.h" #else -static inline void ramster_init(bool x, bool y, bool z) +static inline void ramster_init(bool x, bool y, bool z, bool w) { } diff --git a/drivers/staging/zcache/ramster/debug.c b/drivers/staging/zcache/ramster/debug.c index bf34133cc63..327e4f0d98e 100644 --- a/drivers/staging/zcache/ramster/debug.c +++ b/drivers/staging/zcache/ramster/debug.c @@ -43,7 +43,7 @@ static struct debug_entry { }; #undef ATTR -int __init ramster_debugfs_init(void) +int ramster_debugfs_init(void) { int i; struct dentry *root = debugfs_create_dir("ramster", NULL); diff --git a/drivers/staging/zcache/ramster/nodemanager.c b/drivers/staging/zcache/ramster/nodemanager.c index c0f48158735..2cfe93342c0 100644 --- a/drivers/staging/zcache/ramster/nodemanager.c +++ b/drivers/staging/zcache/ramster/nodemanager.c @@ -949,7 +949,7 @@ static void __exit exit_r2nm(void) r2hb_exit(); } -static int __init init_r2nm(void) +int r2nm_init(void) { int ret = -1; @@ -986,10 +986,11 @@ out_r2hb: out: return ret; } +EXPORT_SYMBOL_GPL(r2nm_init); MODULE_AUTHOR("Oracle"); MODULE_LICENSE("GPL"); -/* module_init(init_r2nm) */ -late_initcall(init_r2nm); -/* module_exit(exit_r2nm) */ +#ifndef CONFIG_RAMSTER_MODULE +late_initcall(r2nm_init); +#endif diff --git a/drivers/staging/zcache/ramster/ramster.c b/drivers/staging/zcache/ramster/ramster.c index 87816279ce3..b18b887db79 100644 --- a/drivers/staging/zcache/ramster/ramster.c +++ b/drivers/staging/zcache/ramster/ramster.c @@ -121,6 +121,7 @@ int ramster_do_preload_flnode(struct tmem_pool *pool) kmem_cache_free(ramster_flnode_cache, flnode); return ret; } +EXPORT_SYMBOL_GPL(ramster_do_preload_flnode); /* * Called by the message handler after a (still compressed) page has been @@ -388,6 +389,7 @@ void *ramster_pampd_free(void *pampd, struct tmem_pool *pool, } return local_pampd; } +EXPORT_SYMBOL_GPL(ramster_pampd_free); void ramster_count_foreign_pages(bool eph, int count) { @@ -408,6 +410,7 @@ void ramster_count_foreign_pages(bool eph, int count) } } } +EXPORT_SYMBOL_GPL(ramster_count_foreign_pages); /* * For now, just push over a few pages every few seconds to @@ -593,7 +596,7 @@ requeue: ramster_remotify_queue_delayed_work(HZ); } -void __init ramster_remotify_init(void) +void ramster_remotify_init(void) { unsigned long n = 60UL; ramster_remotify_workqueue = @@ -768,8 +771,10 @@ static bool frontswap_selfshrinking __read_mostly; static void selfshrink_process(struct work_struct *work); static DECLARE_DELAYED_WORK(selfshrink_worker, selfshrink_process); +#ifndef CONFIG_RAMSTER_MODULE /* Enable/disable with kernel boot option. */ -static bool use_frontswap_selfshrink __initdata = true; +static bool use_frontswap_selfshrink = true; +#endif /* * The default values for the following parameters were deemed reasonable @@ -824,6 +829,7 @@ static void frontswap_selfshrink(void) frontswap_shrink(tgt_frontswap_pages); } +#ifndef CONFIG_RAMSTER_MODULE static int __init ramster_nofrontswap_selfshrink_setup(char *s) { use_frontswap_selfshrink = false; @@ -831,6 +837,7 @@ static int __init ramster_nofrontswap_selfshrink_setup(char *s) } __setup("noselfshrink", ramster_nofrontswap_selfshrink_setup); +#endif static void selfshrink_process(struct work_struct *work) { @@ -849,6 +856,7 @@ void ramster_cpu_up(int cpu) per_cpu(ramster_remoteputmem1, cpu) = p1; per_cpu(ramster_remoteputmem2, cpu) = p2; } +EXPORT_SYMBOL_GPL(ramster_cpu_up); void ramster_cpu_down(int cpu) { @@ -864,6 +872,7 @@ void ramster_cpu_down(int cpu) kp->flnode = NULL; } } +EXPORT_SYMBOL_GPL(ramster_cpu_down); void ramster_register_pamops(struct tmem_pamops *pamops) { @@ -874,9 +883,11 @@ void ramster_register_pamops(struct tmem_pamops *pamops) pamops->repatriate = ramster_pampd_repatriate; pamops->repatriate_preload = ramster_pampd_repatriate_preload; } +EXPORT_SYMBOL_GPL(ramster_register_pamops); -void __init ramster_init(bool cleancache, bool frontswap, - bool frontswap_exclusive_gets) +void ramster_init(bool cleancache, bool frontswap, + bool frontswap_exclusive_gets, + bool frontswap_selfshrink) { int ret = 0; @@ -891,10 +902,17 @@ void __init ramster_init(bool cleancache, bool frontswap, if (ret) pr_err("ramster: can't create sysfs for ramster\n"); (void)r2net_register_handlers(); +#ifdef CONFIG_RAMSTER_MODULE + ret = r2nm_init(); + if (ret) + pr_err("ramster: can't init r2net\n"); + frontswap_selfshrinking = frontswap_selfshrink; +#else + frontswap_selfshrinking = use_frontswap_selfshrink; +#endif INIT_LIST_HEAD(&ramster_rem_op_list); ramster_flnode_cache = kmem_cache_create("ramster_flnode", sizeof(struct flushlist_node), 0, 0, NULL); - frontswap_selfshrinking = use_frontswap_selfshrink; if (frontswap_selfshrinking) { pr_info("ramster: Initializing frontswap selfshrink driver.\n"); schedule_delayed_work(&selfshrink_worker, @@ -902,3 +920,4 @@ void __init ramster_init(bool cleancache, bool frontswap, } ramster_remotify_init(); } +EXPORT_SYMBOL_GPL(ramster_init); diff --git a/drivers/staging/zcache/ramster/ramster.h b/drivers/staging/zcache/ramster/ramster.h index 12ae56f09ca..6d41a7a772e 100644 --- a/drivers/staging/zcache/ramster/ramster.h +++ b/drivers/staging/zcache/ramster/ramster.h @@ -147,7 +147,7 @@ extern int r2net_register_handlers(void); extern int r2net_remote_target_node_set(int); extern int ramster_remotify_pageframe(bool); -extern void ramster_init(bool, bool, bool); +extern void ramster_init(bool, bool, bool, bool); extern void ramster_register_pamops(struct tmem_pamops *); extern int ramster_localify(int, struct tmem_oid *oidp, uint32_t, char *, unsigned int, void *); diff --git a/drivers/staging/zcache/ramster/ramster_nodemanager.h b/drivers/staging/zcache/ramster/ramster_nodemanager.h index 49f879d943a..dbaae34ea61 100644 --- a/drivers/staging/zcache/ramster/ramster_nodemanager.h +++ b/drivers/staging/zcache/ramster/ramster_nodemanager.h @@ -36,4 +36,6 @@ /* host name, group name, cluster name all 64 bytes */ #define R2NM_MAX_NAME_LEN 64 /* __NEW_UTS_LEN */ +extern int r2nm_init(void); + #endif /* _RAMSTER_NODEMANAGER_H */ diff --git a/drivers/staging/zcache/tmem.c b/drivers/staging/zcache/tmem.c index a2b7e03b606..d7e51e4152e 100644 --- a/drivers/staging/zcache/tmem.c +++ b/drivers/staging/zcache/tmem.c @@ -35,7 +35,8 @@ #include <linux/list.h> #include <linux/spinlock.h> #include <linux/atomic.h> -#ifdef CONFIG_RAMSTER +#include <linux/export.h> +#if defined(CONFIG_RAMSTER) || defined(CONFIG_RAMSTER_MODULE) #include <linux/delay.h> #endif @@ -641,6 +642,7 @@ void *tmem_localify_get_pampd(struct tmem_pool *pool, struct tmem_oid *oidp, /* note, hashbucket remains locked */ return pampd; } +EXPORT_SYMBOL_GPL(tmem_localify_get_pampd); void tmem_localify_finish(struct tmem_obj *obj, uint32_t index, void *pampd, void *saved_hb, bool delete) @@ -658,6 +660,7 @@ void tmem_localify_finish(struct tmem_obj *obj, uint32_t index, } spin_unlock(&hb->lock); } +EXPORT_SYMBOL_GPL(tmem_localify_finish); /* * For ramster only. Helper function to support asynchronous tmem_get. @@ -719,6 +722,7 @@ out: spin_unlock(&hb->lock); return ret; } +EXPORT_SYMBOL_GPL(tmem_replace); #endif /* diff --git a/drivers/staging/zcache/tmem.h b/drivers/staging/zcache/tmem.h index adbe5a8f28a..d128ce290f1 100644 --- a/drivers/staging/zcache/tmem.h +++ b/drivers/staging/zcache/tmem.h @@ -126,7 +126,7 @@ static inline unsigned tmem_oid_hash(struct tmem_oid *oidp) TMEM_HASH_BUCKET_BITS); } -#ifdef CONFIG_RAMSTER +#if defined(CONFIG_RAMSTER) || defined(CONFIG_RAMSTER_MODULE) struct tmem_xhandle { uint8_t client_id; uint8_t xh_data_cksum; @@ -171,7 +171,7 @@ struct tmem_obj { unsigned int objnode_tree_height; unsigned long objnode_count; long pampd_count; -#ifdef CONFIG_RAMSTER +#if defined(CONFIG_RAMSTER) || defined(CONFIG_RAMSTER_MODULE) /* * for current design of ramster, all pages belonging to * an object reside on the same remotenode and extra is @@ -215,7 +215,7 @@ struct tmem_pamops { uint32_t); void (*free)(void *, struct tmem_pool *, struct tmem_oid *, uint32_t, bool); -#ifdef CONFIG_RAMSTER +#if defined(CONFIG_RAMSTER) || defined(CONFIG_RAMSTER_MODULE) void (*new_obj)(struct tmem_obj *); void (*free_obj)(struct tmem_pool *, struct tmem_obj *, bool); void *(*repatriate_preload)(void *, struct tmem_pool *, @@ -247,7 +247,7 @@ extern int tmem_flush_page(struct tmem_pool *, struct tmem_oid *, extern int tmem_flush_object(struct tmem_pool *, struct tmem_oid *); extern int tmem_destroy_pool(struct tmem_pool *); extern void tmem_new_pool(struct tmem_pool *, uint32_t); -#ifdef CONFIG_RAMSTER +#if defined(CONFIG_RAMSTER) || defined(CONFIG_RAMSTER_MODULE) extern int tmem_replace(struct tmem_pool *, struct tmem_oid *, uint32_t index, void *); extern void *tmem_localify_get_pampd(struct tmem_pool *, struct tmem_oid *, diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging/zcache/zcache-main.c index e23d814b539..522cb8e5514 100644 --- a/drivers/staging/zcache/zcache-main.c +++ b/drivers/staging/zcache/zcache-main.c @@ -37,8 +37,10 @@ #include "debug.h" #ifdef CONFIG_RAMSTER static bool ramster_enabled __read_mostly; +static int disable_frontswap_selfshrink; #else #define ramster_enabled false +#define disable_frontswap_selfshrink 0 #endif #ifndef __PG_WAS_ACTIVE @@ -81,8 +83,12 @@ static char *namestr __read_mostly = "zcache"; (__GFP_FS | __GFP_NORETRY | __GFP_NOWARN | __GFP_NOMEMALLOC) /* crypto API for zcache */ +#ifdef CONFIG_ZCACHE_MODULE +static char *zcache_comp_name = "lzo"; +#else #define ZCACHE_COMP_NAME_SZ CRYPTO_MAX_ALG_NAME static char zcache_comp_name[ZCACHE_COMP_NAME_SZ] __read_mostly; +#endif static struct crypto_comp * __percpu *zcache_comp_pcpu_tfms __read_mostly; enum comp_op { @@ -1576,9 +1582,9 @@ static struct cleancache_ops zcache_cleancache_ops = { .init_fs = zcache_cleancache_init_fs }; -struct cleancache_ops zcache_cleancache_register_ops(void) +struct cleancache_ops *zcache_cleancache_register_ops(void) { - struct cleancache_ops old_ops = + struct cleancache_ops *old_ops = cleancache_register_ops(&zcache_cleancache_ops); return old_ops; @@ -1707,9 +1713,9 @@ static struct frontswap_ops zcache_frontswap_ops = { .init = zcache_frontswap_init }; -struct frontswap_ops zcache_frontswap_register_ops(void) +struct frontswap_ops *zcache_frontswap_register_ops(void) { - struct frontswap_ops old_ops = + struct frontswap_ops *old_ops = frontswap_register_ops(&zcache_frontswap_ops); return old_ops; @@ -1721,6 +1727,7 @@ struct frontswap_ops zcache_frontswap_register_ops(void) * OR NOTHING HAPPENS! */ +#ifndef CONFIG_ZCACHE_MODULE static int __init enable_zcache(char *s) { zcache_enabled = true; @@ -1787,18 +1794,27 @@ static int __init enable_zcache_compressor(char *s) return 1; } __setup("zcache=", enable_zcache_compressor); +#endif -static int __init zcache_comp_init(void) +static int zcache_comp_init(void) { int ret = 0; /* check crypto algorithm */ +#ifdef CONFIG_ZCACHE_MODULE + ret = crypto_has_comp(zcache_comp_name, 0, 0); + if (!ret) { + ret = -1; + goto out; + } +#else if (*zcache_comp_name != '\0') { ret = crypto_has_comp(zcache_comp_name, 0, 0); if (!ret) pr_info("zcache: %s not supported\n", zcache_comp_name); + goto out; } if (!ret) strcpy(zcache_comp_name, "lzo"); @@ -1807,6 +1823,7 @@ static int __init zcache_comp_init(void) ret = 1; goto out; } +#endif pr_info("zcache: using %s compressor\n", zcache_comp_name); /* alloc percpu transforms */ @@ -1818,10 +1835,13 @@ out: return ret; } -static int __init zcache_init(void) +static int zcache_init(void) { int ret = 0; +#ifdef CONFIG_ZCACHE_MODULE + zcache_enabled = 1; +#endif if (ramster_enabled) { namestr = "ramster"; ramster_register_pamops(&zcache_pamops); @@ -1860,7 +1880,7 @@ static int __init zcache_init(void) } zbud_init(); if (zcache_enabled && !disable_cleancache) { - struct cleancache_ops old_ops; + struct cleancache_ops *old_ops; register_shrinker(&zcache_shrinker); old_ops = zcache_cleancache_register_ops(); @@ -1870,11 +1890,11 @@ static int __init zcache_init(void) pr_info("%s: cleancache: ignorenonactive = %d\n", namestr, !disable_cleancache_ignore_nonactive); #endif - if (old_ops.init_fs != NULL) + if (old_ops != NULL) pr_warn("%s: cleancache_ops overridden\n", namestr); } if (zcache_enabled && !disable_frontswap) { - struct frontswap_ops old_ops; + struct frontswap_ops *old_ops; old_ops = zcache_frontswap_register_ops(); if (frontswap_has_exclusive_gets) @@ -1886,14 +1906,36 @@ static int __init zcache_init(void) namestr, frontswap_has_exclusive_gets, !disable_frontswap_ignore_nonactive); #endif - if (old_ops.init != NULL) + if (IS_ERR(old_ops) || old_ops) { + if (IS_ERR(old_ops)) + return PTR_RET(old_ops); pr_warn("%s: frontswap_ops overridden\n", namestr); + } } if (ramster_enabled) ramster_init(!disable_cleancache, !disable_frontswap, - frontswap_has_exclusive_gets); + frontswap_has_exclusive_gets, + !disable_frontswap_selfshrink); out: return ret; } +#ifdef CONFIG_ZCACHE_MODULE +#ifdef CONFIG_RAMSTER +module_param(ramster_enabled, int, S_IRUGO); +module_param(disable_frontswap_selfshrink, int, S_IRUGO); +#endif +module_param(disable_cleancache, int, S_IRUGO); +module_param(disable_frontswap, int, S_IRUGO); +#ifdef FRONTSWAP_HAS_EXCLUSIVE_GETS +module_param(frontswap_has_exclusive_gets, bool, S_IRUGO); +#endif +module_param(disable_frontswap_ignore_nonactive, int, S_IRUGO); +module_param(zcache_comp_name, charp, S_IRUGO); +module_init(zcache_init); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Dan Magenheimer <dan.magenheimer@oracle.com>"); +MODULE_DESCRIPTION("In-kernel compression of cleancache/frontswap pages"); +#else late_initcall(zcache_init); +#endif diff --git a/drivers/staging/zcache/zcache.h b/drivers/staging/zcache/zcache.h index 81722b33b08..849120095e7 100644 --- a/drivers/staging/zcache/zcache.h +++ b/drivers/staging/zcache/zcache.h @@ -39,7 +39,7 @@ extern int zcache_flush_page(int, int, struct tmem_oid *, uint32_t); extern int zcache_flush_object(int, int, struct tmem_oid *); extern void zcache_decompress_to_page(char *, unsigned int, struct page *); -#ifdef CONFIG_RAMSTER +#if defined(CONFIG_RAMSTER) || defined(CONFIG_RAMSTER_MODULE) extern void *zcache_pampd_create(char *, unsigned int, bool, int, struct tmem_handle *); int zcache_autocreate_pool(unsigned int cli_id, unsigned int pool_id, bool eph); diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c index 4797228747f..8623577bbbe 100644 --- a/drivers/usb/storage/realtek_cr.c +++ b/drivers/usb/storage/realtek_cr.c @@ -933,14 +933,11 @@ static int realtek_cr_autosuspend_setup(struct us_data *us) static void realtek_cr_destructor(void *extra) { - struct rts51x_chip *chip = (struct rts51x_chip *)extra; - struct us_data *us; + struct rts51x_chip *chip = extra; if (!chip) return; - us = chip->us; - #ifdef CONFIG_REALTEK_AUTOPM if (ss_en) { del_timer(&chip->rts51x_suspend_timer); diff --git a/drivers/w1/slaves/w1_bq27000.c b/drivers/w1/slaves/w1_bq27000.c index 773dca5beaf..afbefed5f2c 100644 --- a/drivers/w1/slaves/w1_bq27000.c +++ b/drivers/w1/slaves/w1_bq27000.c @@ -57,6 +57,8 @@ static int w1_bq27000_add_slave(struct w1_slave *sl) ret = platform_device_add_data(pdev, &bq27000_battery_info, sizeof(bq27000_battery_info)); + if (ret) + goto pdev_add_failed; pdev->dev.parent = &sl->dev; ret = platform_device_add(pdev); @@ -68,7 +70,7 @@ static int w1_bq27000_add_slave(struct w1_slave *sl) goto success; pdev_add_failed: - platform_device_unregister(pdev); + platform_device_put(pdev); success: return ret; } diff --git a/drivers/w1/slaves/w1_ds2760.c b/drivers/w1/slaves/w1_ds2760.c index aa7bd5fa2fa..e86a69dc411 100644 --- a/drivers/w1/slaves/w1_ds2760.c +++ b/drivers/w1/slaves/w1_ds2760.c @@ -148,8 +148,9 @@ static int w1_ds2760_add_slave(struct w1_slave *sl) goto success; bin_attr_failed: + platform_device_del(pdev); pdev_add_failed: - platform_device_unregister(pdev); + platform_device_put(pdev); pdev_alloc_failed: ida_simple_remove(&bat_ida, id); noid: diff --git a/drivers/w1/slaves/w1_ds2780.c b/drivers/w1/slaves/w1_ds2780.c index 7b09307de0e..98ed9c49cf5 100644 --- a/drivers/w1/slaves/w1_ds2780.c +++ b/drivers/w1/slaves/w1_ds2780.c @@ -141,8 +141,9 @@ static int w1_ds2780_add_slave(struct w1_slave *sl) return 0; bin_attr_failed: + platform_device_del(pdev); pdev_add_failed: - platform_device_unregister(pdev); + platform_device_put(pdev); pdev_alloc_failed: ida_simple_remove(&bat_ida, id); noid: diff --git a/drivers/w1/slaves/w1_ds2781.c b/drivers/w1/slaves/w1_ds2781.c index 877daf74159..5140d7be67a 100644 --- a/drivers/w1/slaves/w1_ds2781.c +++ b/drivers/w1/slaves/w1_ds2781.c @@ -139,8 +139,9 @@ static int w1_ds2781_add_slave(struct w1_slave *sl) return 0; bin_attr_failed: + platform_device_del(pdev); pdev_add_failed: - platform_device_unregister(pdev); + platform_device_put(pdev); pdev_alloc_failed: ida_simple_remove(&bat_ida, id); noid: diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 67af155cf60..dd4d9cb8624 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -145,9 +145,9 @@ config SWIOTLB_XEN select SWIOTLB config XEN_TMEM - bool + tristate depends on !ARM - default y if (CLEANCACHE || FRONTSWAP) + default m if (CLEANCACHE || FRONTSWAP) help Shim to interface in-kernel Transcendent Memory hooks (e.g. cleancache and frontswap) to Xen tmem hypercalls. diff --git a/drivers/xen/tmem.c b/drivers/xen/tmem.c index 3ee836d4258..e3600be4e7f 100644 --- a/drivers/xen/tmem.c +++ b/drivers/xen/tmem.c @@ -5,6 +5,7 @@ * Author: Dan Magenheimer */ +#include <linux/module.h> #include <linux/kernel.h> #include <linux/types.h> #include <linux/init.h> @@ -128,6 +129,7 @@ static int xen_tmem_flush_object(u32 pool_id, struct tmem_oid oid) return xen_tmem_op(TMEM_FLUSH_OBJECT, pool_id, oid, 0, 0, 0, 0, 0); } +#ifndef CONFIG_XEN_TMEM_MODULE bool __read_mostly tmem_enabled = false; static int __init enable_tmem(char *s) @@ -136,6 +138,7 @@ static int __init enable_tmem(char *s) return 1; } __setup("tmem", enable_tmem); +#endif #ifdef CONFIG_CLEANCACHE static int xen_tmem_destroy_pool(u32 pool_id) @@ -227,16 +230,21 @@ static int tmem_cleancache_init_shared_fs(char *uuid, size_t pagesize) return xen_tmem_new_pool(shared_uuid, TMEM_POOL_SHARED, pagesize); } -static bool __initdata use_cleancache = true; - +static bool disable_cleancache __read_mostly; +static bool disable_selfballooning __read_mostly; +#ifdef CONFIG_XEN_TMEM_MODULE +module_param(disable_cleancache, bool, S_IRUGO); +module_param(disable_selfballooning, bool, S_IRUGO); +#else static int __init no_cleancache(char *s) { - use_cleancache = false; + disable_cleancache = true; return 1; } __setup("nocleancache", no_cleancache); +#endif -static struct cleancache_ops __initdata tmem_cleancache_ops = { +static struct cleancache_ops tmem_cleancache_ops = { .put_page = tmem_cleancache_put_page, .get_page = tmem_cleancache_get_page, .invalidate_page = tmem_cleancache_flush_page, @@ -353,54 +361,71 @@ static void tmem_frontswap_init(unsigned ignored) xen_tmem_new_pool(private, TMEM_POOL_PERSIST, PAGE_SIZE); } -static bool __initdata use_frontswap = true; - +static bool disable_frontswap __read_mostly; +static bool disable_frontswap_selfshrinking __read_mostly; +#ifdef CONFIG_XEN_TMEM_MODULE +module_param(disable_frontswap, bool, S_IRUGO); +module_param(disable_frontswap_selfshrinking, bool, S_IRUGO); +#else static int __init no_frontswap(char *s) { - use_frontswap = false; + disable_frontswap = true; return 1; } __setup("nofrontswap", no_frontswap); +#endif -static struct frontswap_ops __initdata tmem_frontswap_ops = { +static struct frontswap_ops tmem_frontswap_ops = { .store = tmem_frontswap_store, .load = tmem_frontswap_load, .invalidate_page = tmem_frontswap_flush_page, .invalidate_area = tmem_frontswap_flush_area, .init = tmem_frontswap_init }; +#else /* CONFIG_FRONTSWAP */ +#define disable_frontswap_selfshrinking 1 #endif -static int __init xen_tmem_init(void) +static int xen_tmem_init(void) { if (!xen_domain()) return 0; #ifdef CONFIG_FRONTSWAP - if (tmem_enabled && use_frontswap) { + if (tmem_enabled && !disable_frontswap) { char *s = ""; - struct frontswap_ops old_ops = + struct frontswap_ops *old_ops = frontswap_register_ops(&tmem_frontswap_ops); tmem_frontswap_poolid = -1; - if (old_ops.init != NULL) + if (IS_ERR(old_ops) || old_ops) { + if (IS_ERR(old_ops)) + return PTR_ERR(old_ops); s = " (WARNING: frontswap_ops overridden)"; + } printk(KERN_INFO "frontswap enabled, RAM provided by " "Xen Transcendent Memory%s\n", s); } #endif #ifdef CONFIG_CLEANCACHE BUG_ON(sizeof(struct cleancache_filekey) != sizeof(struct tmem_oid)); - if (tmem_enabled && use_cleancache) { + if (tmem_enabled && !disable_cleancache) { char *s = ""; - struct cleancache_ops old_ops = + struct cleancache_ops *old_ops = cleancache_register_ops(&tmem_cleancache_ops); - if (old_ops.init_fs != NULL) + if (old_ops) s = " (WARNING: cleancache_ops overridden)"; printk(KERN_INFO "cleancache enabled, RAM provided by " "Xen Transcendent Memory%s\n", s); } #endif +#ifdef CONFIG_XEN_SELFBALLOONING + xen_selfballoon_init(!disable_selfballooning, + !disable_frontswap_selfshrinking); +#endif return 0; } module_init(xen_tmem_init) +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Dan Magenheimer <dan.magenheimer@oracle.com>"); +MODULE_DESCRIPTION("Shim to Xen transcendent memory"); diff --git a/drivers/xen/xen-selfballoon.c b/drivers/xen/xen-selfballoon.c index 2552d3e0a70..f2ef569c7cc 100644 --- a/drivers/xen/xen-selfballoon.c +++ b/drivers/xen/xen-selfballoon.c @@ -121,7 +121,7 @@ static DECLARE_DELAYED_WORK(selfballoon_worker, selfballoon_process); static bool frontswap_selfshrinking __read_mostly; /* Enable/disable with kernel boot option. */ -static bool use_frontswap_selfshrink __initdata = true; +static bool use_frontswap_selfshrink = true; /* * The default values for the following parameters were deemed reasonable @@ -185,7 +185,7 @@ static int __init xen_nofrontswap_selfshrink_setup(char *s) __setup("noselfshrink", xen_nofrontswap_selfshrink_setup); /* Disable with kernel boot option. */ -static bool use_selfballooning __initdata = true; +static bool use_selfballooning = true; static int __init xen_noselfballooning_setup(char *s) { @@ -196,7 +196,7 @@ static int __init xen_noselfballooning_setup(char *s) __setup("noselfballooning", xen_noselfballooning_setup); #else /* !CONFIG_FRONTSWAP */ /* Enable with kernel boot option. */ -static bool use_selfballooning __initdata = false; +static bool use_selfballooning; static int __init xen_selfballooning_setup(char *s) { @@ -537,7 +537,7 @@ int register_xen_selfballooning(struct device *dev) } EXPORT_SYMBOL(register_xen_selfballooning); -static int __init xen_selfballoon_init(void) +int xen_selfballoon_init(bool use_selfballooning, bool use_frontswap_selfshrink) { bool enable = false; @@ -571,7 +571,4 @@ static int __init xen_selfballoon_init(void) return 0; } - -subsys_initcall(xen_selfballoon_init); - -MODULE_LICENSE("GPL"); +EXPORT_SYMBOL(xen_selfballoon_init); |