Documentation: Better document the hardlockup_panic sysctl
PATCH 1/1 Documentation: Better document the hardlockup_panic sysctl
Commit ac1f591249d95372f ("kernel/watchdog.c: add sysctl knob hardlockup_panic") added the hardlockup_panic sysctl, but did not add it to Documentation/sysctl/kernel.txt. Add this, and reference it from the corresponding entry in Documentation/admin-guide/kernel-parameters.txt.
--- Documentation/admin-guide/kernel-parameters.txt | 3 +++ Documentation/sysctl/kernel.txt | 14 ++++++++++++++ 2 files changed, 17 insertions(+)
Documentation/admin-guide/kernel-parameters.txt +3 -0
@@ -2538,6 +2538,9 @@ This is useful when you use a panic=... timeout and need the box quickly up again. + These settings can be accessed at runtime via + the nmi_watchdog and hardlockup_panic sysctls. + netpoll.carrier_timeout= [NET] Specifies amount of time (in seconds) that netpoll should wait for a carrier. By default netpoll
Documentation/sysctl/kernel.txt +14 -0
@@ -34,6 +34,7 @@ show up in /proc/sys/kernel: - hostname - hotplug - hardlockup_all_cpu_backtrace +- hardlockup_panic - hung_task_panic - hung_task_check_count - hung_task_timeout_secs
@@ -313,6 +314,19 @@ will be initiated. 1: on detection capture more debug information. ============================================================== +hardlockup_panic: + +This parameter can be used to control whether the kernel panics +when a hard lockup is detected. + + 0 - don't panic on hard lockup + 1 - panic on hard lockup + +See Documentation/lockup-watchdogs.txt for more information. This can +also be set using the nmi_watchdog kernel parameter. + +============================================================== + hotplug: Path for the hotplug policy agent.
Signature · 1 line
2.9.5
Ack
Sent from my iPhone
Quoted 62 lines · Scott Wood
Commit
ac1f591249d95372f("kernel/watchdog.c: add sysctl knobhardlockup_panic") added thehardlockup_panicsysctl, but did not add it toDocumentation/sysctl/kernel.txt. Add this, and reference it from the corresponding entry inDocumentation/admin-guide/kernel-parameters.txt.Signed-off-by Scott Wood <[email protected]>---
Documentation/admin-guide/kernel-parameters.txt| 3 +++Documentation/sysctl/kernel.txt| 14 ++++++++++++++2 files changed, 17 insertions(+)Documentation/admin-guide/kernel-parameters.txt +3
-0@@ -2538,6 +2538,9 @@ This is useful when you use a panic=... timeout and need the box quickly up again. + These settings can be accessed at runtime via + the nmi_watchdog and hardlockup_panic sysctls. + netpoll.carrier_timeout= [NET] Specifies amount of time (in seconds) that netpoll should wait for a carrier. By default netpollDocumentation/sysctl/kernel.txt +1
-6@@ -34,6 +34,7 @@ show up in /proc/sys/kernel: - hostname - hotplug - hardlockup_all_cpu_backtrace +- hardlockup_panic - hung_task_panic - hung_task_check_count - hung_task_timeout_secs@@ -313,6 +314,19 @@ will be initiated.1: on detection capture more debug information.
==============================================================Documentation/sysctl/kernel.txt +13
-0+hardlockup_panic: + +This parameter can be used to control whether the kernel panics +when a hard lockup is detected. + + 0 - don't panic on hard lockup + 1 - panic on hard lockup + +See Documentation/lockup-watchdogs.txt for more information. This can +also be set using the nmi_watchdog kernel parameter. + +============================================================== +hotplug:
Path for the hotplug policy agent.
Signature · 1 line
2.9.5
Quoted 4 lines · Scott Wood
Commit
ac1f591249d95372f("kernel/watchdog.c: add sysctl knobhardlockup_panic") added thehardlockup_panicsysctl, but did not add it toDocumentation/sysctl/kernel.txt. Add this, and reference it from the corresponding entry inDocumentation/admin-guide/kernel-parameters.txt.
Quoted 56 lines
Signed-off-by Scott Wood <[email protected]>--- Documentation/admin-guide/kernel-parameters.txt | 3 +++ Documentation/sysctl/kernel.txt | 14 ++++++++++++++ 2 files changed, 17 insertions(+)Documentation/admin-guide/kernel-parameters.txt +3
-0@@ -2538,6 +2538,9 @@ This is useful when you use a panic=... timeout and need the box quickly up again. + These settings can be accessed at runtime via + the nmi_watchdog and hardlockup_panic sysctls. + netpoll.carrier_timeout= [NET] Specifies amount of time (in seconds) that netpoll should wait for a carrier. By default netpollDocumentation/sysctl/kernel.txt +14
-0@@ -34,6 +34,7 @@ show up in /proc/sys/kernel: - hostname - hotplug - hardlockup_all_cpu_backtrace +- hardlockup_panic - hung_task_panic - hung_task_check_count - hung_task_timeout_secs@@ -313,6 +314,19 @@ will be initiated. 1: on detection capture more debug information. ============================================================== +hardlockup_panic: + +This parameter can be used to control whether the kernel panics +when a hard lockup is detected. + + 0 - don't panic on hard lockup + 1 - panic on hard lockup + +See Documentation/lockup-watchdogs.txt for more information. This can +also be set using the nmi_watchdog kernel parameter. + +============================================================== + hotplug: Path for the hotplug policy agent.Signature · 1 line
2.9.5
Quoted 4 lines · On Sun, 10 Dec 2017 01:48:46 -0600 Scott Wood <[email protected]> wrote:
Commit
ac1f591249d95372f("kernel/watchdog.c: add sysctl knobhardlockup_panic") added thehardlockup_panicsysctl, but did not add it toDocumentation/sysctl/kernel.txt. Add this, and reference it from the corresponding entry inDocumentation/admin-guide/kernel-parameters.txt.
Applied to the docs tree, thanks.
jon