#include <linux/filter.h>
#include <linux/namei.h>
#include <linux/parser.h>
+#include <linux/sched/clock.h>
+#include <linux/sched/mm.h>
#include "internal.h"
void __user *buffer, size_t *lenp,
loff_t *ppos)
{
- int ret = proc_dointvec(table, write, buffer, lenp, ppos);
+ int ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
if (ret || !write)
return ret;
if (enabled) {
clone_ctx = unclone_ctx(ctx);
ctx_resched(cpuctx, ctx, event_type);
+ } else {
+ ctx_sched_in(ctx, cpuctx, EVENT_TIME, current);
}
perf_ctx_unlock(cpuctx, ctx);
rcu_read_unlock();
}
-static int perf_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int perf_mmap_fault(struct vm_fault *vmf)
{
- struct perf_event *event = vma->vm_file->private_data;
+ struct perf_event *event = vmf->vma->vm_file->private_data;
struct ring_buffer *rb;
int ret = VM_FAULT_SIGBUS;
goto unlock;
get_page(vmf->page);
- vmf->page->mapping = vma->vm_file->f_mapping;
+ vmf->page->mapping = vmf->vma->vm_file->f_mapping;
vmf->page->index = vmf->pgoff;
ret = 0;
* of swizzling perf_event::ctx.
*/
perf_remove_from_context(group_leader, 0);
+ put_ctx(gctx);
list_for_each_entry(sibling, &group_leader->sibling_list,
group_entry) {
perf_event__state_init(group_leader);
perf_install_in_context(ctx, group_leader, group_leader->cpu);
get_ctx(ctx);
-
- /*
- * Now that all events are installed in @ctx, nothing
- * references @gctx anymore, so drop the last reference we have
- * on it.
- */
- put_ctx(gctx);
}
/*
.css_alloc = perf_cgroup_css_alloc,
.css_free = perf_cgroup_css_free,
.attach = perf_cgroup_attach,
+ /*
+ * Implicitly enable on dfl hierarchy so that perf events can
+ * always be filtered by cgroup2 path as long as perf_event
+ * controller is not mounted on a legacy hierarchy.
+ */
+ .implicit_on_dfl = true,
};
#endif /* CONFIG_CGROUP_PERF */