Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1443469
| From | Arjan van de Ven <arjan@linux.intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface |
| Date | 2016-07-14 15:50 +0200 |
| Message-ID | <rUPbB-1TY-35@gated-at.bofh.it> (permalink) |
| References | <r2YMV-7mJ-3@gated-at.bofh.it> <r2YMW-7mJ-21@gated-at.bofh.it> <rUC4F-1yk-11@gated-at.bofh.it> <rUFFf-43M-11@gated-at.bofh.it> <rUOfw-1kh-15@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 7/14/2016 5:48 AM, Serge E. Hallyn wrote: > Can someone give a detailed explanation of what you could do with > the new timerslack feature and compare it to what you can do with > sys_nice? > what you can do with the timerslack feature is add upto 4 seconds of extra time/delay on top of each select()/poll()/nanosleep()/... (basically anything that uses hrtimers on behalf of the user), and then also control within that 4 second window exactly when that extra delay ends (which may help a timing attack kind of scenario)
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface John Stultz <john.stultz@linaro.org> - 2016-07-14 01:50 +0200
Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface Kees Cook <keescook@chromium.org> - 2016-07-14 05:40 +0200
Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface Arjan van de Ven <arjan@linux.intel.com> - 2016-07-14 07:30 +0200
Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface "Serge E. Hallyn" <serge@hallyn.com> - 2016-07-14 14:50 +0200
Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface Arjan van de Ven <arjan@linux.intel.com> - 2016-07-14 15:50 +0200
Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface John Stultz <john.stultz@linaro.org> - 2016-07-14 18:10 +0200
Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface John Stultz <john.stultz@linaro.org> - 2016-07-14 18:10 +0200
Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface Kees Cook <keescook@chromium.org> - 2016-07-14 19:50 +0200
Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface Arjan van de Ven <arjan@linux.intel.com> - 2016-07-14 19:50 +0200
Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface "Serge E. Hallyn" <serge@hallyn.com> - 2016-07-14 19:50 +0200
Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface Kees Cook <keescook@chromium.org> - 2016-07-14 20:00 +0200
Re: [PATCH 2/2] proc: Add /proc/<pid>/timerslack_ns interface "Serge E. Hallyn" <serge@hallyn.com> - 2016-07-14 22:30 +0200
csiph-web