diff options
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/feature-removal-schedule.txt | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 7c799fc5b88e..3d849122b5b1 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt | |||
@@ -133,41 +133,6 @@ Who: Pavel Machek <pavel@ucw.cz> | |||
133 | 133 | ||
134 | --------------------------- | 134 | --------------------------- |
135 | 135 | ||
136 | What: sys_sysctl | ||
137 | When: September 2010 | ||
138 | Option: CONFIG_SYSCTL_SYSCALL | ||
139 | Why: The same information is available in a more convenient from | ||
140 | /proc/sys, and none of the sysctl variables appear to be | ||
141 | important performance wise. | ||
142 | |||
143 | Binary sysctls are a long standing source of subtle kernel | ||
144 | bugs and security issues. | ||
145 | |||
146 | When I looked several months ago all I could find after | ||
147 | searching several distributions were 5 user space programs and | ||
148 | glibc (which falls back to /proc/sys) using this syscall. | ||
149 | |||
150 | The man page for sysctl(2) documents it as unusable for user | ||
151 | space programs. | ||
152 | |||
153 | sysctl(2) is not generally ABI compatible to a 32bit user | ||
154 | space application on a 64bit and a 32bit kernel. | ||
155 | |||
156 | For the last several months the policy has been no new binary | ||
157 | sysctls and no one has put forward an argument to use them. | ||
158 | |||
159 | Binary sysctls issues seem to keep happening appearing so | ||
160 | properly deprecating them (with a warning to user space) and a | ||
161 | 2 year grace warning period will mean eventually we can kill | ||
162 | them and end the pain. | ||
163 | |||
164 | In the mean time individual binary sysctls can be dealt with | ||
165 | in a piecewise fashion. | ||
166 | |||
167 | Who: Eric Biederman <ebiederm@xmission.com> | ||
168 | |||
169 | --------------------------- | ||
170 | |||
171 | What: /proc/<pid>/oom_adj | 136 | What: /proc/<pid>/oom_adj |
172 | When: August 2012 | 137 | When: August 2012 |
173 | Why: /proc/<pid>/oom_adj allows userspace to influence the oom killer's | 138 | Why: /proc/<pid>/oom_adj allows userspace to influence the oom killer's |