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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-21 19:25:14 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-21 19:25:14 -0700 |
commit | 5ec29e3149d800e6db83c1b6ff441daf319cbbe2 (patch) | |
tree | b23ecaff7078590215e91b2b6aa4c90c2d923e10 /drivers/watchdog | |
parent | abd209b7083b2f3a2a19e522f688e7569f284e5d (diff) | |
parent | 6ff968cca1dfebd4b6fcade87c11658dbfc96932 (diff) | |
download | linux-stable-5ec29e3149d800e6db83c1b6ff441daf319cbbe2.tar.gz linux-stable-5ec29e3149d800e6db83c1b6ff441daf319cbbe2.tar.bz2 linux-stable-5ec29e3149d800e6db83c1b6ff441daf319cbbe2.zip |
Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core locking updates from Ingo Molnar:
"This update:
- extends and simplifies x86 NMI callback handling code to enhance
and fix the HP hw-watchdog driver
- simplifies the x86 NMI callback handling code to fix a kmemcheck
bug.
- enhances the hung-task debugger"
* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/nmi: Fix the type of the nmiaction.flags field
x86/nmi: Fix page faults by nmiaction if kmemcheck is enabled
x86/nmi: Add new NMI queues to deal with IO_CHK and SERR
watchdog, hpwdt: Remove priority option for NMI callback
hung task debugging: Inject NMI when hung and going to panic
Diffstat (limited to 'drivers/watchdog')
-rw-r--r-- | drivers/watchdog/hpwdt.c | 46 |
1 files changed, 24 insertions, 22 deletions
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c index 9f13b897fd64..23885f2d56a0 100644 --- a/drivers/watchdog/hpwdt.c +++ b/drivers/watchdog/hpwdt.c @@ -147,7 +147,6 @@ struct cmn_registers { static unsigned int hpwdt_nmi_decoding; static unsigned int allow_kdump; -static unsigned int priority; /* hpwdt at end of die_notify list */ static unsigned int is_icru; static DEFINE_SPINLOCK(rom_lock); static void *cru_rom_addr; @@ -723,28 +722,35 @@ static int __devinit hpwdt_init_nmi_decoding(struct pci_dev *dev) } /* - * If the priority is set to 1, then we will be put first on the - * die notify list to handle a critical NMI. The default is to - * be last so other users of the NMI signal can function. + * Only one function can register for NMI_UNKNOWN */ - retval = register_nmi_handler(NMI_UNKNOWN, hpwdt_pretimeout, - (priority) ? NMI_FLAG_FIRST : 0, - "hpwdt"); - if (retval != 0) { - dev_warn(&dev->dev, - "Unable to register a die notifier (err=%d).\n", - retval); - if (cru_rom_addr) - iounmap(cru_rom_addr); - } + retval = register_nmi_handler(NMI_UNKNOWN, hpwdt_pretimeout, 0, "hpwdt"); + if (retval) + goto error; + retval = register_nmi_handler(NMI_SERR, hpwdt_pretimeout, 0, "hpwdt"); + if (retval) + goto error1; + retval = register_nmi_handler(NMI_IO_CHECK, hpwdt_pretimeout, 0, "hpwdt"); + if (retval) + goto error2; dev_info(&dev->dev, "HP Watchdog Timer Driver: NMI decoding initialized" - ", allow kernel dump: %s (default = 0/OFF)" - ", priority: %s (default = 0/LAST).\n", - (allow_kdump == 0) ? "OFF" : "ON", - (priority == 0) ? "LAST" : "FIRST"); + ", allow kernel dump: %s (default = 0/OFF)\n", + (allow_kdump == 0) ? "OFF" : "ON"); return 0; + +error2: + unregister_nmi_handler(NMI_SERR, "hpwdt"); +error1: + unregister_nmi_handler(NMI_UNKNOWN, "hpwdt"); +error: + dev_warn(&dev->dev, + "Unable to register a die notifier (err=%d).\n", + retval); + if (cru_rom_addr) + iounmap(cru_rom_addr); + return retval; } static void hpwdt_exit_nmi_decoding(void) @@ -881,10 +887,6 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" #ifdef CONFIG_HPWDT_NMI_DECODING module_param(allow_kdump, int, 0); MODULE_PARM_DESC(allow_kdump, "Start a kernel dump after NMI occurs"); - -module_param(priority, int, 0); -MODULE_PARM_DESC(priority, "The hpwdt driver handles NMIs first or last" - " (default = 0/Last)\n"); #endif /* !CONFIG_HPWDT_NMI_DECODING */ module_init(hpwdt_init); |