RE: [RFC V2 PATCH 0/1] kexec: crash_kexec_post_notifiers boot option related fixes

2015-08-06 Thread 河合英宏 / KAWAI,HIDEHIRO
> From: Eric W. Biederman [mailto:ebied...@xmission.com] > >> From: Eric W. Biederman [mailto:ebied...@xmission.com] > > [...] > >> A specific hook for a very specific purpose when there is no other way > >> we can consider. > > > > So, is kmsg_dump like feature admissible? > > > >> If you don't ha

Re: [RFC V2 PATCH 0/1] kexec: crash_kexec_post_notifiers boot option related fixes

2015-08-05 Thread Eric W. Biederman
"河合英宏 / KAWAI,HIDEHIRO" writes: > Hello, > > Thanks for the reply. > >> From: Eric W. Biederman [mailto:ebied...@xmission.com] > [...] >> A specific hook for a very specific purpose when there is no other way >> we can consider. > > So, is kmsg_dump like feature admissible? > >> If you don't hav

RE: [RFC V2 PATCH 0/1] kexec: crash_kexec_post_notifiers boot option related fixes

2015-08-04 Thread 河合英宏 / KAWAI,HIDEHIRO
Hello, Thanks for the reply. > From: Eric W. Biederman [mailto:ebied...@xmission.com] [...] > A specific hook for a very specific purpose when there is no other way > we can consider. So, is kmsg_dump like feature admissible? > If you don't have something that generalises well into a general pu

Re: [RFC V2 PATCH 0/1] kexec: crash_kexec_post_notifiers boot option related fixes

2015-08-03 Thread Eric W. Biederman
Hidehiro Kawai writes: > Hello Eric and Vivek, > > Do you have any comments? crash_kexec_post_notifiers is a debugging hack to allow people to test if the kmsg_dump works better than kexec. crash_kexec_post_notifiers is not, nor has it ever been a solution for general operation (which is what I

Re: [RFC V2 PATCH 0/1] kexec: crash_kexec_post_notifiers boot option related fixes

2015-08-03 Thread Hidehiro Kawai
Hello Eric and Vivek, Do you have any comments? (2015/07/24 10:16), Hidehiro Kawai wrote: > This is a bugfix patch for crash_kexec_post_notifiers boot option > which allows users to call panic notifiers and kmsg dumpers before > kdump. > > This fixes one of the problems reported by Daniel Walker

[RFC V2 PATCH 0/1] kexec: crash_kexec_post_notifiers boot option related fixes

2015-07-23 Thread Hidehiro Kawai
This is a bugfix patch for crash_kexec_post_notifiers boot option which allows users to call panic notifiers and kmsg dumpers before kdump. This fixes one of the problems reported by Daniel Walker (https://lkml.org/lkml/2015/6/24/44). Problem 1: If crash_kexec_post_notifiers boot option is spe