| Age | Commit message (Collapse) | Author | Files | Lines | |
|---|---|---|---|---|---|
| 2009-04-02 | debug cgroup: remove unneeded cgroup_lock | Li Zefan | 1 | -2/+0 | |
| Since we are in cgroup write handler, so the cgrp is valid, so we don't have to hold cgroup_mutex when calling cgroup_task_count(). One similar example is in cgroup_tasks_open(). Signed-off-by: Li Zefan <[email protected]> Acked-by: Paul Menage <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> | |||||
| 2008-10-20 | cgroups: fix probable race with put_css_set[_taskexit] and find_css_set | Lai Jiangshan | 1 | -2/+2 | |
| put_css_set_taskexit may be called when find_css_set is called on other cpu. And the race will occur: put_css_set_taskexit side find_css_set side | atomic_dec_and_test(&kref->refcount) | /* kref->refcount = 0 */ | .................................................................... | read_lock(&css_set_lock) | find_existing_css_set | get_css_set | read_unlock(&css_set_lock); .................................................................... __release_css_set | .................................................................... | /* use a released css_set */ | [put_css_set is the same. But in the current code, all put_css_set are put into cgroup mutex critical region as the same as find_css_set.] [[email protected]: repair comments] [[email protected]: eliminate race in css_set refcounting] Signed-off-by: Lai Jiangshan <[email protected]> Cc: Balbir Singh <[email protected]> Cc: KAMEZAWA Hiroyuki <[email protected]> Signed-off-by: Paul Menage <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> | |||||
| 2008-04-29 | CGroup API files: move "releasable" to cgroup_debug subsystem | Paul Menage | 1 | -1/+11 | |
| The "releasable" control file provided by the cgroup framework exports the state of a per-cgroup flag that's related to the notify-on-release feature. This isn't really generally useful, unless you're trying to debug this particular feature of cgroups. This patch moves the "releasable" file to the cgroup_debug subsystem. Signed-off-by: Paul Menage <[email protected]> Cc: "Li Zefan" <[email protected]> Cc: Balbir Singh <[email protected]> Cc: Paul Jackson <[email protected]> Cc: Pavel Emelyanov <[email protected]> Cc: KAMEZAWA Hiroyuki <[email protected]> Cc: "YAMAMOTO Takashi" <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> | |||||
| 2008-04-29 | CGroup API files: rename read/write_uint methods to read_write_u64 | Paul Menage | 1 | -4/+4 | |
| Several people have justifiably complained that the "_uint" suffix is inappropriate for functions that handle u64 values, so this patch just renames all these functions and their users to have the suffic _u64. [[email protected]: build fix] Signed-off-by: Paul Menage <[email protected]> Cc: "Li Zefan" <[email protected]> Cc: Balbir Singh <[email protected]> Cc: Paul Jackson <[email protected]> Cc: Pavel Emelyanov <[email protected]> Cc: KAMEZAWA Hiroyuki <[email protected]> Cc: "YAMAMOTO Takashi" <[email protected]> Signed-off-by: Peter Zijlstra <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> | |||||
| 2007-10-19 | Task Control Groups: simple task cgroup debug info subsystem | Paul Menage | 1 | -0/+97 | |
| This example subsystem exports debugging information as an aid to diagnosing refcount leaks, etc, in the cgroup framework. Signed-off-by: Paul Menage <[email protected]> Cc: Serge E. Hallyn <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Balbir Singh <[email protected]> Cc: Paul Jackson <[email protected]> Cc: Kirill Korotaev <[email protected]> Cc: Herbert Poetzl <[email protected]> Cc: Srivatsa Vaddagiri <[email protected]> Cc: Cedric Le Goater <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> | |||||