Add "css_stacks" parameter to kernel's command line to enable css_stacks debug at boot.
https://jira.sw.ru/browse/PSBM-98148 Signed-off-by: Andrey Ryabinin <[email protected]> --- kernel/cgroup.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 17ba1ab9c7b0..bf218e88ac9d 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -4192,6 +4192,7 @@ static int css_stacks_set(void *data, u64 val) DEFINE_SIMPLE_ATTRIBUTE(css_stacks_fops, css_stacks_get, css_stacks_set, "%llu\n"); +int setup_css_stacks_cmd; static int __init css_stacks_debugfs(void) { void *ret; @@ -4200,9 +4201,18 @@ static int __init css_stacks_debugfs(void) &css_stacks_fops); if (!ret) pr_warn("Failed to create css_stacks in debugfs"); + if (setup_css_stacks_cmd) + static_key_slow_inc(&css_stacks_on); return 0; } late_initcall(css_stacks_debugfs); + +static int __init setup_css_stacks(char *str) +{ + setup_css_stacks_cmd = 1; + return 1; +} +__setup("css_stacks", setup_css_stacks); #endif static void init_cgroup_css(struct cgroup_subsys_state *css, -- 2.26.2 _______________________________________________ Devel mailing list [email protected] https://lists.openvz.org/mailman/listinfo/devel
