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Groups > linux.kernel > #1317486
| From | Chris Metcalf <cmetcalf@ezchip.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] Add hard/soft lockup debugger entry points |
| Date | 2016-01-26 03:50 +0100 |
| Message-ID | <qV1RE-4VC-15@gated-at.bofh.it> (permalink) |
| References | <qV1HY-4RV-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 1/25/2016 9:36 PM, Jeff Merkey wrote: > This patch adds an export which can be set by system debuggers to direct > the hard lockup and soft lockup detector to trigger an INT3 exception > and enter a debugger if one is active. It is assumed that if someone > sets this variable, then an int3 handler of some sort will be actively > loaded or registered via the notify die handler chain. > > This addition is extremely useful for debugging hard and soft lockups > real time and quickly from a console debugger. > > Signed-off-by: Jeff Merkey<linux.mdb@gmail.com> > --- > kernel/watchdog.c | 9 +++++++++ > 1 file changed, 9 insertions(+) Introducing Intel-specific assembly into generic code won't work. You would need to add a framework to allow platforms to specify a debugging instruction or maybe leverage some existing framework like arch_kgdb_breakpoint. -- Chris Metcalf, EZChip Semiconductor http://www.ezchip.com
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[PATCH] Add hard/soft lockup debugger entry points Jeff Merkey <linux.mdb@gmail.com> - 2016-01-26 03:40 +0100
Re: [PATCH] Add hard/soft lockup debugger entry points Chris Metcalf <cmetcalf@ezchip.com> - 2016-01-26 03:50 +0100
Re: [PATCH] Add hard/soft lockup debugger entry points Jeff Merkey <linux.mdb@gmail.com> - 2016-01-26 04:00 +0100
Re: [PATCH] Add hard/soft lockup debugger entry points kbuild test robot <lkp@intel.com> - 2016-01-26 05:10 +0100
Re: [PATCH] Add hard/soft lockup debugger entry points kbuild test robot <lkp@intel.com> - 2016-01-26 05:30 +0100
Re: [PATCH] Add hard/soft lockup debugger entry points Jeff Merkey <linux.mdb@gmail.com> - 2016-01-26 06:00 +0100
Re: [PATCH] Add hard/soft lockup debugger entry points kbuild test robot <lkp@intel.com> - 2016-01-26 05:30 +0100
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