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Message-ID: <471700FF.2050303@ah.jp.nec.com>
Date: Thu, 18 Oct 2007 15:45:19 +0900
From: Takenori Nagano <t-nagano@...jp.nec.com>
To: linux-kernel@...r.kernel.org
CC: vgoyal@...ibm.com, "Eric W. Biederman" <ebiederm@...ssion.com>,
k-miyoshi@...jp.nec.com, kexec@...ts.infradead.org,
Bernhard Walle <bwalle@...e.de>, Keith Owens <kaos@....com.au>,
Andrew Morton <akpm@...ux-foundation.org>, kdb@....sgi.com
Subject: [PATCH 2/2] implement new notifier function to panic_notifier_list
,take2
This patch implements new notifier function to panic_notifier_list. We can
change the list of order by debugfs.
Thanks,
---
Signed-off-by: Takenori Nagano <t-nagano@...jp.nec.com>
---
diff -uprN linux-2.6.23.orig/arch/alpha/kernel/setup.c
linux-2.6.23/arch/alpha/kernel/setup.c
--- linux-2.6.23.orig/arch/alpha/kernel/setup.c 2007-10-10 05:31:38.000000000 +0900
+++ linux-2.6.23/arch/alpha/kernel/setup.c 2007-10-18 08:56:53.928000000 +0900
@@ -45,14 +45,22 @@
#include <asm/io.h>
#include <linux/log2.h>
-extern struct atomic_notifier_head panic_notifier_list;
+extern struct tunable_atomic_notifier_head panic_notifier_list;
static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
-static struct notifier_block alpha_panic_block = {
+static struct notifier_block alpha_panic_block_base = {
alpha_panic_event,
NULL,
INT_MAX /* try to do it first */
};
+static struct tunable_atomic_notifier_block alpha_panic_block = {
+ &alpha_panic_block_base,
+ NULL,
+ NULL,
+ NULL,
+ NULL
+};
+
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/system.h>
@@ -522,8 +530,8 @@ setup_arch(char **cmdline_p)
}
/* Register a call for panic conditions. */
- atomic_notifier_chain_register(&panic_notifier_list,
- &alpha_panic_block);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &alpha_panic_block, "alpha_panic", NULL);
#ifdef CONFIG_ALPHA_GENERIC
/* Assume that we've booted from SRM if we haven't booted from MILO.
diff -uprN linux-2.6.23.orig/arch/arm/mach-omap1/board-voiceblue.c
linux-2.6.23/arch/arm/mach-omap1/board-voiceblue.c
--- linux-2.6.23.orig/arch/arm/mach-omap1/board-voiceblue.c 2007-10-10
05:31:38.000000000 +0900
+++ linux-2.6.23/arch/arm/mach-omap1/board-voiceblue.c 2007-10-18
09:00:35.900000000 +0900
@@ -228,14 +228,23 @@ static int panic_event(struct notifier_b
return NOTIFY_DONE;
}
-static struct notifier_block panic_block = {
+static struct notifier_block panic_block_base = {
.notifier_call = panic_event,
};
+static struct tunable_atomic_notifier_block panic_block = {
+ .nb = &panic_block_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
+
static int __init voiceblue_setup(void)
{
/* Setup panic notifier */
- notifier_chain_register(&panic_notifier_list, &panic_block);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &panic_block, "VoiceBlue", NULL);
return 0;
}
diff -uprN linux-2.6.23.orig/arch/mips/sgi-ip22/ip22-reset.c
linux-2.6.23/arch/mips/sgi-ip22/ip22-reset.c
--- linux-2.6.23.orig/arch/mips/sgi-ip22/ip22-reset.c 2007-10-10
05:31:38.000000000 +0900
+++ linux-2.6.23/arch/mips/sgi-ip22/ip22-reset.c 2007-10-18 09:01:33.408000000 +0900
@@ -226,10 +226,18 @@ static int panic_event(struct notifier_b
return NOTIFY_DONE;
}
-static struct notifier_block panic_block = {
+static struct notifier_block panic_block_base = {
.notifier_call = panic_event,
};
+static struct tunable_atomic_notifier_block panic_block = {
+ .nb = &panic_block_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
+
static int __init reboot_setup(void)
{
_machine_restart = sgi_machine_restart;
@@ -239,7 +247,8 @@ static int __init reboot_setup(void)
request_irq(SGI_PANEL_IRQ, panel_int, 0, "Front Panel", NULL);
init_timer(&blink_timer);
blink_timer.function = blink_timeout;
- atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &panic_block, "sgi-ip22", NULL);
return 0;
}
diff -uprN linux-2.6.23.orig/arch/mips/sgi-ip32/ip32-reset.c
linux-2.6.23/arch/mips/sgi-ip32/ip32-reset.c
--- linux-2.6.23.orig/arch/mips/sgi-ip32/ip32-reset.c 2007-10-10
05:31:38.000000000 +0900
+++ linux-2.6.23/arch/mips/sgi-ip32/ip32-reset.c 2007-10-18 09:02:20.496000000 +0900
@@ -175,10 +175,18 @@ static int panic_event(struct notifier_b
return NOTIFY_DONE;
}
-static struct notifier_block panic_block = {
+static struct notifier_block panic_block_base = {
.notifier_call = panic_event,
};
+static struct tunable_atomic_notifier_block panic_block = {
+ .nb = &panic_block_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
+
static __init int ip32_reboot_setup(void)
{
/* turn on the green led only */
@@ -193,7 +201,8 @@ static __init int ip32_reboot_setup(void
init_timer(&blink_timer);
blink_timer.function = blink_timeout;
- atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &panic_block, "sgi-ip32", NULL);
if (request_irq(MACEISA_RTC_IRQ, ip32_rtc_int, 0, "rtc", NULL))
panic("Can't allocate MACEISA RTC IRQ");
diff -uprN linux-2.6.23.orig/arch/parisc/kernel/pdc_chassis.c
linux-2.6.23/arch/parisc/kernel/pdc_chassis.c
--- linux-2.6.23.orig/arch/parisc/kernel/pdc_chassis.c 2007-10-10
05:31:38.000000000 +0900
+++ linux-2.6.23/arch/parisc/kernel/pdc_chassis.c 2007-10-18 08:56:54.052000000
+0900
@@ -101,11 +101,18 @@ static int pdc_chassis_panic_event(struc
}
-static struct notifier_block pdc_chassis_panic_block = {
+static struct notifier_block pdc_chassis_panic_block_base = {
.notifier_call = pdc_chassis_panic_event,
.priority = INT_MAX,
};
+static struct tunable_atomic_notifier_block pdc_chassis_panic_block = {
+ .nb = &pdc_chassis_panic_block_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
/**
* parisc_reboot_event() - Called by the reboot handler.
@@ -144,8 +151,8 @@ void __init parisc_pdc_chassis_init(void
PDC_CHASSIS_VER);
/* initialize panic notifier chain */
- atomic_notifier_chain_register(&panic_notifier_list,
- &pdc_chassis_panic_block);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &pdc_chassis_panic_block, "pdc_chassis", NULL);
/* initialize reboot notifier chain */
register_reboot_notifier(&pdc_chassis_reboot_block);
diff -uprN linux-2.6.23.orig/arch/powerpc/kernel/setup-common.c
linux-2.6.23/arch/powerpc/kernel/setup-common.c
--- linux-2.6.23.orig/arch/powerpc/kernel/setup-common.c 2007-10-10
05:31:38.000000000 +0900
+++ linux-2.6.23/arch/powerpc/kernel/setup-common.c 2007-10-18
09:03:40.968000000 +0900
@@ -534,14 +534,23 @@ static int ppc_panic_event(struct notifi
return NOTIFY_DONE;
}
-static struct notifier_block ppc_panic_block = {
+static struct notifier_block ppc_panic_block_base = {
.notifier_call = ppc_panic_event,
.priority = INT_MIN /* may not return; must be done last */
};
+static struct tunable_atomic_notifier_block ppc_panic_block = {
+ .nb = &ppc_panic_block_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
+
void __init setup_panic(void)
{
- atomic_notifier_chain_register(&panic_notifier_list, &ppc_panic_block);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &ppc_panic_block, "powerpc", NULL);
}
#ifdef CONFIG_CHECK_CACHE_COHERENCY
diff -uprN linux-2.6.23.orig/arch/ppc/platforms/prep_setup.c
linux-2.6.23/arch/ppc/platforms/prep_setup.c
--- linux-2.6.23.orig/arch/ppc/platforms/prep_setup.c 2007-10-10
05:31:38.000000000 +0900
+++ linux-2.6.23/arch/ppc/platforms/prep_setup.c 2007-10-18 09:04:56.352000000 +0900
@@ -712,12 +712,20 @@ ibm_statusled_panic(struct notifier_bloc
return NOTIFY_DONE;
}
-static struct notifier_block ibm_statusled_block = {
+static struct notifier_block ibm_statusled_block_base = {
ibm_statusled_panic,
NULL,
INT_MAX /* try to do it first */
};
+static struct tunable_atomic_notifier_block ibm_statusled_block = {
+ &ibm_statusled_block_base,
+ NULL,
+ NULL,
+ NULL,
+ NULL
+};
+
static void
ibm_statusled_progress(char *s, unsigned short hex)
{
@@ -732,8 +740,9 @@ ibm_statusled_progress(char *s, unsigned
hex = 0xfff;
if (!notifier_installed) {
++notifier_installed;
- atomic_notifier_chain_register(&panic_notifier_list,
- &ibm_statusled_block);
+ tunable_atomic_notifier_chain_register(
+ &panic_notifier_list, &ibm_statusled_block,
+ "IBM_statusLED", NULL);
}
}
else
diff -uprN linux-2.6.23.orig/arch/s390/kernel/ipl.c
linux-2.6.23/arch/s390/kernel/ipl.c
--- linux-2.6.23.orig/arch/s390/kernel/ipl.c 2007-10-10 05:31:38.000000000 +0900
+++ linux-2.6.23/arch/s390/kernel/ipl.c 2007-10-18 08:56:54.132000000 +0900
@@ -1036,11 +1036,19 @@ static int shutdown_on_panic_notify(stru
return NOTIFY_OK;
}
-static struct notifier_block shutdown_on_panic_nb = {
+static struct notifier_block shutdown_on_panic_nb_base = {
.notifier_call = shutdown_on_panic_notify,
.priority = SHUTDOWN_ON_PANIC_PRIO
};
+static struct tunable_atomic_notifier_block shutdown_on_panic_nb = {
+ .nb = &shutdown_on_panic_nb_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
+
static int __init dump_init(void)
{
int rc;
@@ -1075,8 +1083,8 @@ static int __init shutdown_actions_init(
firmware_unregister(&shutdown_actions_subsys);
return rc;
}
- atomic_notifier_chain_register(&panic_notifier_list,
- &shutdown_on_panic_nb);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &shutdown_on_panic_nb, "s390_ipl", NULL);
return 0;
}
diff -uprN linux-2.6.23.orig/arch/s390/kernel/setup.c
linux-2.6.23/arch/s390/kernel/setup.c
--- linux-2.6.23.orig/arch/s390/kernel/setup.c 2007-10-10 05:31:38.000000000 +0900
+++ linux-2.6.23/arch/s390/kernel/setup.c 2007-10-18 08:56:54.144000000 +0900
@@ -173,11 +173,19 @@ static int vmpanic_notify(struct notifie
#define PANIC_PRI_VMPANIC 0
-static struct notifier_block vmpanic_nb = {
+static struct notifier_block vmpanic_nb_base = {
.notifier_call = vmpanic_notify,
.priority = PANIC_PRI_VMPANIC
};
+static struct tunable_atomic_notifier_block vmpanic_nb = {
+ .nb = &vmpanic_nb_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
+
static int __init vmpanic_setup(char *str)
{
static int register_done __initdata = 0;
@@ -186,8 +194,8 @@ static int __init vmpanic_setup(char *st
vmpanic_cmd[127] = 0;
if (!register_done) {
register_done = 1;
- atomic_notifier_chain_register(&panic_notifier_list,
- &vmpanic_nb);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &vmpanic_nb, "s390_panic", NULL);
}
return 1;
}
diff -uprN linux-2.6.23.orig/arch/sparc64/kernel/sstate.c
linux-2.6.23/arch/sparc64/kernel/sstate.c
--- linux-2.6.23.orig/arch/sparc64/kernel/sstate.c 2007-10-10 05:31:38.000000000
+0900
+++ linux-2.6.23/arch/sparc64/kernel/sstate.c 2007-10-18 09:05:46.620000000 +0900
@@ -82,11 +82,19 @@ static int sstate_panic_event(struct not
return NOTIFY_DONE;
}
-static struct notifier_block sstate_panic_block = {
+static struct notifier_block sstate_panic_block_base = {
.notifier_call = sstate_panic_event,
.priority = INT_MAX,
};
+static struct tunable_atomic_notifier_block sstate_panic_block = {
+ .nb = &sstate_panic_block_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
+
void __init sun4v_sstate_init(void)
{
unsigned long major, minor;
@@ -99,6 +107,6 @@ void __init sun4v_sstate_init(void)
hv_supports_soft_state = 1;
prom_sun4v_guest_soft_state();
- atomic_notifier_chain_register(&panic_notifier_list,
- &sstate_panic_block);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &sstate_panic_block, "sstate" ,NULL);
}
diff -uprN linux-2.6.23.orig/arch/um/drivers/mconsole_kern.c
linux-2.6.23/arch/um/drivers/mconsole_kern.c
--- linux-2.6.23.orig/arch/um/drivers/mconsole_kern.c 2007-10-10
05:31:38.000000000 +0900
+++ linux-2.6.23/arch/um/drivers/mconsole_kern.c 2007-10-18 09:06:25.144000000 +0900
@@ -928,16 +928,24 @@ static int notify_panic(struct notifier_
return(0);
}
-static struct notifier_block panic_exit_notifier = {
+static struct notifier_block panic_exit_notifier_base = {
.notifier_call = notify_panic,
.next = NULL,
.priority = 1
};
+static struct tunable_atomic_notifier_block panic_exit_notifier = {
+ .nb = &panic_exit_notifier_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
+
static int add_notifier(void)
{
- atomic_notifier_chain_register(&panic_notifier_list,
- &panic_exit_notifier);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &panic_exit_notifier, "mconsole", NULL);
return(0);
}
diff -uprN linux-2.6.23.orig/arch/um/kernel/um_arch.c
linux-2.6.23/arch/um/kernel/um_arch.c
--- linux-2.6.23.orig/arch/um/kernel/um_arch.c 2007-10-10 05:31:38.000000000 +0900
+++ linux-2.6.23/arch/um/kernel/um_arch.c 2007-10-18 09:06:45.360000000 +0900
@@ -478,16 +478,24 @@ static int panic_exit(struct notifier_bl
return 0;
}
-static struct notifier_block panic_exit_notifier = {
+static struct notifier_block panic_exit_notifier_base = {
.notifier_call = panic_exit,
.next = NULL,
.priority = 0
};
+static struct tunable_atomic_notifier_block panic_exit_notifier = {
+ .nb = &panic_exit_notifier_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
+
void __init setup_arch(char **cmdline_p)
{
- atomic_notifier_chain_register(&panic_notifier_list,
- &panic_exit_notifier);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &panic_exit_notifier, "um", NULL);
paging_init();
strlcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
diff -uprN linux-2.6.23.orig/arch/xtensa/platform-iss/setup.c
linux-2.6.23/arch/xtensa/platform-iss/setup.c
--- linux-2.6.23.orig/arch/xtensa/platform-iss/setup.c 2007-10-10
05:31:38.000000000 +0900
+++ linux-2.6.23/arch/xtensa/platform-iss/setup.c 2007-10-18 09:07:25.468000000
+0900
@@ -98,13 +98,22 @@ iss_panic_event(struct notifier_block *t
return NOTIFY_DONE;
}
-static struct notifier_block iss_panic_block = {
+static struct notifier_block iss_panic_block_base = {
iss_panic_event,
NULL,
0
};
+static struct tunable_atomic_notifier_block iss_panic_block = {
+ &iss_panic_block_base,
+ NULL,
+ NULL,
+ NULL,
+ NULL
+};
+
void __init platform_setup(char **p_cmdline)
{
- atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &iss_panic_block, "iss_panic", NULL);
}
diff -uprN linux-2.6.23.orig/drivers/char/ipmi/ipmi_msghandler.c
linux-2.6.23/drivers/char/ipmi/ipmi_msghandler.c
--- linux-2.6.23.orig/drivers/char/ipmi/ipmi_msghandler.c 2007-10-10
05:31:38.000000000 +0900
+++ linux-2.6.23/drivers/char/ipmi/ipmi_msghandler.c 2007-10-18
09:08:31.012000000 +0900
@@ -4070,12 +4070,20 @@ static int panic_event(struct notifier_b
return NOTIFY_DONE;
}
-static struct notifier_block panic_block = {
+static struct notifier_block panic_block_base = {
.notifier_call = panic_event,
.next = NULL,
.priority = 200 /* priority: INT_MAX >= x >= 0 */
};
+static struct tunable_atomic_notifier_block panic_block = {
+ .nb = &panic_block_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
+
static int ipmi_init_msghandler(void)
{
int rv;
@@ -4105,7 +4113,8 @@ static int ipmi_init_msghandler(void)
setup_timer(&ipmi_timer, ipmi_timeout, 0);
mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES);
- atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &panic_block, "ipmi_msghandler", NULL);
initialized = 1;
@@ -4125,7 +4134,8 @@ static __exit void cleanup_ipmi(void)
if (!initialized)
return;
- atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block);
+ tunable_atomic_notifier_chain_unregister(&panic_notifier_list,
+ &panic_block);
/* This can't be called if any interfaces exist, so no worry about
shutting down the interfaces. */
diff -uprN linux-2.6.23.orig/drivers/char/ipmi/ipmi_watchdog.c
linux-2.6.23/drivers/char/ipmi/ipmi_watchdog.c
--- linux-2.6.23.orig/drivers/char/ipmi/ipmi_watchdog.c 2007-10-10
05:31:38.000000000 +0900
+++ linux-2.6.23/drivers/char/ipmi/ipmi_watchdog.c 2007-10-18 09:09:20.660000000
+0900
@@ -1055,12 +1055,19 @@ static int wdog_panic_handler(struct not
return NOTIFY_OK;
}
-static struct notifier_block wdog_panic_notifier = {
+static struct notifier_block wdog_panic_notifier_base = {
.notifier_call = wdog_panic_handler,
.next = NULL,
.priority = 150 /* priority: INT_MAX >= x >= 0 */
};
+static struct tunable_atomic_notifier_block wdog_panic_notifier = {
+ .nb = &wdog_panic_notifier_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
static void ipmi_new_smi(int if_num, struct device *device)
{
@@ -1212,8 +1219,8 @@ static int __init ipmi_wdog_init(void)
check_parms();
register_reboot_notifier(&wdog_reboot_notifier);
- atomic_notifier_chain_register(&panic_notifier_list,
- &wdog_panic_notifier);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &wdog_panic_notifier, "ipmi_wdog", NULL);
rv = ipmi_smi_watcher_register(&smi_watcher);
if (rv) {
@@ -1221,8 +1228,8 @@ static int __init ipmi_wdog_init(void)
if (preaction_val == WDOG_PRETIMEOUT_NMI)
release_nmi(&ipmi_nmi_handler);
#endif
- atomic_notifier_chain_unregister(&panic_notifier_list,
- &wdog_panic_notifier);
+ tunable_atomic_notifier_chain_unregister(&panic_notifier_list,
+ &wdog_panic_notifier);
unregister_reboot_notifier(&wdog_reboot_notifier);
printk(KERN_WARNING PFX "can't register smi watcher\n");
return rv;
@@ -1243,8 +1250,8 @@ static void __exit ipmi_wdog_exit(void)
release_nmi(&ipmi_nmi_handler);
#endif
- atomic_notifier_chain_unregister(&panic_notifier_list,
- &wdog_panic_notifier);
+ tunable_atomic_notifier_chain_unregister(&panic_notifier_list,
+ &wdog_panic_notifier);
unregister_reboot_notifier(&wdog_reboot_notifier);
}
module_exit(ipmi_wdog_exit);
diff -uprN linux-2.6.23.orig/drivers/lguest/lguest.c
linux-2.6.23/drivers/lguest/lguest.c
--- linux-2.6.23.orig/drivers/lguest/lguest.c 2007-10-10 05:31:38.000000000 +0900
+++ linux-2.6.23/drivers/lguest/lguest.c 2007-10-18 08:56:54.212000000 +0900
@@ -880,16 +880,25 @@ static int lguest_panic(struct notifier_
return NOTIFY_DONE;
}
-static struct notifier_block paniced = {
+static struct notifier_block paniced_base = {
.notifier_call = lguest_panic
};
+static struct tunable_atomic_notifier_block paniced = {
+ .nb = &paniced_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
+
/* Setting up memory is fairly easy. */
static __init char *lguest_memory_setup(void)
{
/* We do this here and not earlier because lockcheck barfs if we do it
* before start_kernel() */
- atomic_notifier_chain_register(&panic_notifier_list, &paniced);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list, &paniced,
+ "lguest", NULL);
/* The Linux bootloader header contains an "e820" memory map: the
* Launcher populated the first entry with our memory limit. */
diff -uprN linux-2.6.23.orig/drivers/misc/ibmasm/heartbeat.c
linux-2.6.23/drivers/misc/ibmasm/heartbeat.c
--- linux-2.6.23.orig/drivers/misc/ibmasm/heartbeat.c 2007-10-10
05:31:38.000000000 +0900
+++ linux-2.6.23/drivers/misc/ibmasm/heartbeat.c 2007-10-18 09:11:07.696000000 +0900
@@ -48,17 +48,21 @@ static int panic_happened(struct notifie
return 0;
}
-static struct notifier_block panic_notifier = { panic_happened, NULL, 1 };
+static struct notifier_block panic_notifier_base = { panic_happened, NULL, 1 };
+
+static struct tunable_atomic_notifier_block panic_notifier = {
&panic_notifier_base,
+ NULL, NULL, NULL, NULL};
void ibmasm_register_panic_notifier(void)
{
- atomic_notifier_chain_register(&panic_notifier_list, &panic_notifier);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &panic_notifier, "ibmasm", NULL);
}
void ibmasm_unregister_panic_notifier(void)
{
- atomic_notifier_chain_unregister(&panic_notifier_list,
- &panic_notifier);
+ tunable_atomic_notifier_chain_unregister(&panic_notifier_list,
+ &panic_notifier);
}
diff -uprN linux-2.6.23.orig/drivers/parisc/power.c
linux-2.6.23/drivers/parisc/power.c
--- linux-2.6.23.orig/drivers/parisc/power.c 2007-10-10 05:31:38.000000000 +0900
+++ linux-2.6.23/drivers/parisc/power.c 2007-10-18 09:11:36.880000000 +0900
@@ -189,11 +189,18 @@ static int parisc_panic_event(struct not
return NOTIFY_DONE;
}
-static struct notifier_block parisc_panic_block = {
+static struct notifier_block parisc_panic_block_base = {
.notifier_call = parisc_panic_event,
.priority = INT_MAX,
};
+static struct tunable_atomic_notifier_block parisc_panic_block = {
+ .nb = &parisc_panic_block_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
static int __init power_init(void)
{
@@ -231,8 +238,8 @@ static int __init power_init(void)
}
/* Register a call for panic conditions. */
- atomic_notifier_chain_register(&panic_notifier_list,
- &parisc_panic_block);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &parisc_panic_block, "parisc_panic", NULL);
return 0;
}
@@ -241,8 +248,8 @@ static void __exit power_exit(void)
{
kthread_stop(power_task);
- atomic_notifier_chain_unregister(&panic_notifier_list,
- &parisc_panic_block);
+ tunable_atomic_notifier_chain_unregister(&panic_notifier_list,
+ &parisc_panic_block);
pdc_soft_power_button(0);
}
diff -uprN linux-2.6.23.orig/include/linux/kernel.h
linux-2.6.23/include/linux/kernel.h
--- linux-2.6.23.orig/include/linux/kernel.h 2007-10-10 05:31:38.000000000 +0900
+++ linux-2.6.23/include/linux/kernel.h 2007-10-18 08:56:54.216000000 +0900
@@ -104,7 +104,7 @@ extern int cond_resched(void);
(__x < 0) ? -__x : __x; \
})
-extern struct atomic_notifier_head panic_notifier_list;
+extern struct tunable_atomic_notifier_head panic_notifier_list;
extern long (*panic_blink)(long time);
NORET_TYPE void panic(const char * fmt, ...)
__attribute__ ((NORET_AND format (printf, 1, 2))) __cold;
diff -uprN linux-2.6.23.orig/kernel/panic.c linux-2.6.23/kernel/panic.c
--- linux-2.6.23.orig/kernel/panic.c 2007-10-10 05:31:38.000000000 +0900
+++ linux-2.6.23/kernel/panic.c 2007-10-18 09:12:28.188000000 +0900
@@ -28,7 +28,7 @@ static DEFINE_SPINLOCK(pause_on_oops_loc
int panic_timeout;
-ATOMIC_NOTIFIER_HEAD(panic_notifier_list);
+TUNABLE_ATOMIC_NOTIFIER_HEAD(panic_notifier_list, "panic_notifier_list");
EXPORT_SYMBOL(panic_notifier_list);
@@ -96,7 +96,7 @@ NORET_TYPE void panic(const char * fmt,
smp_send_stop();
#endif
- atomic_notifier_call_chain(&panic_notifier_list, 0, buf);
+ tunable_atomic_notifier_call_chain(&panic_notifier_list, 0, buf);
if (!panic_blink)
panic_blink = no_blink;
diff -uprN linux-2.6.23.orig/kernel/softlockup.c linux-2.6.23/kernel/softlockup.c
--- linux-2.6.23.orig/kernel/softlockup.c 2007-10-10 05:31:38.000000000 +0900
+++ linux-2.6.23/kernel/softlockup.c 2007-10-18 09:13:09.260000000 +0900
@@ -31,10 +31,18 @@ softlock_panic(struct notifier_block *th
return NOTIFY_DONE;
}
-static struct notifier_block panic_block = {
+static struct notifier_block panic_block_base = {
.notifier_call = softlock_panic,
};
+static struct tunable_atomic_notifier_block panic_block = {
+ .nb = &panic_block_base,
+ .head = NULL,
+ .dir = NULL,
+ .pri_dentry = NULL,
+ .desc_dentry = NULL
+};
+
/*
* Returns seconds, approximately. We don't need nanosecond
* resolution, and we don't need to waste time with a big divide when
@@ -193,5 +201,6 @@ __init void spawn_softlockup_task(void)
cpu_callback(&cpu_nfb, CPU_ONLINE, cpu);
register_cpu_notifier(&cpu_nfb);
- atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
+ tunable_atomic_notifier_chain_register(&panic_notifier_list,
+ &panic_block, "softlockup", NULL);
}
-
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