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* perf-security: wrap paragraphs on 72 columnsAlexey Budankov2019-02-181-129/+149
| | | | | | | Implemented formatting of paragraphs to be not wider than 72 columns. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* perf-security: elaborate on perf_events/Perf privileged usersAlexey Budankov2019-02-181-0/+43
| | | | | | | | Elaborate on possible perf_event/Perf privileged users groups and document steps about creating such groups. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* perf-security: document collected perf_events/Perf data categoriesAlexey Budankov2019-02-181-2/+30
| | | | | | | | | Document and categorize system and performance data into groups that can be captured by perf_events/Perf and explicitly indicate the group that can contain process sensitive data. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* perf-security: document perf_events/Perf resource controlAlexey Budankov2019-02-181-0/+42
| | | | | | | | | Extend perf-security.rst file with perf_events/Perf resource control section describing RLIMIT_NOFILE and perf_event_mlock_kb settings for performance monitoring user processes. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* Documentation/admin-guide: introduce perf-security.rst fileAlexey Budankov2018-12-061-0/+97
Implement initial version of perf-security.rst documentation file covering security concerns of perf_event_paranoid settings. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>