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Groups > linux.kernel > #1734835
| From | Prarit Bhargava <prarit@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime timestamps |
| Date | 2017-09-19 14:00 +0200 |
| Message-ID | <urpm1-4YB-1@gated-at.bofh.it> (permalink) |
| References | <umkQ2-2tt-9@gated-at.bofh.it> <umkQ2-2tt-11@gated-at.bofh.it> <upYQW-3nL-29@gated-at.bofh.it> <upZN0-48G-7@gated-at.bofh.it> <uqFsR-6OB-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 09/17/2017 06:46 AM, Sergey Senozhatsky wrote: > I'm a bit uncomfortable with the "breaks user space" part. since this > is a strictly debugging option, would it be sufficient to store those > extended timestamps as prefixes of every message? > see (sorry for "self-quoting"): > lkml.kernel.org/r/20170917062608.GA512@tigerII.localdomain > Sergey, I haven't forgotten about the above. It's something I'm going to look at after this initial patchset is done. P. > each message, thus, will be in the following format > > [current header: loglevel, timestamp, etc] [extended printk data] message text > > extended printk data can contain your monotonic/etc timestamps, and > anything else. > > and then it's up to you how do you grep the messages and process the > extended data. but the point is - user space tools (journald, dmesg, > etc.) stays intact. which is kinda nice. > > so we can avoid that chicken and egg problem: we break user space > by merging the patchset but user space people don't want to talk > about any fixes until we break those tools. > > -ss >
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Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime timestamps Petr Mladek <pmladek@suse.com> - 2017-09-15 15:30 +0200
Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime timestamps Mark Salyzyn <salyzyn@android.com> - 2017-09-15 16:30 +0200
Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime timestamps Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2017-09-17 13:00 +0200
Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime timestamps Prarit Bhargava <prarit@redhat.com> - 2017-09-19 14:00 +0200
Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime timestamps Prarit Bhargava <prarit@redhat.com> - 2017-09-15 16:50 +0200
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