diff options
| author |   Ingo Molnar <mingo@elte.hu> | 2010-04-02 19:37:50 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-04-02 19:38:10 +0200 |
| commit | ec5e61aabeac58670691bd0613388d16697d0d81 (patch) | |
| tree | 59838509358f27334874b90756505785cde29b02 /kernel/sched.c | |
| parent | perf probe: Fix to close dwarf when failing to analyze it (diff) | |
| parent | perf: Fix 'perf sched record' deadlock (diff) | |
| download | linux-dev-ec5e61aabeac58670691bd0613388d16697d0d81.tar.xz linux-dev-ec5e61aabeac58670691bd0613388d16697d0d81.zip | |
Merge branch 'perf/urgent' into perf/core
Conflicts:
arch/x86/kernel/cpu/perf_event.c
Merge reason: Resolve the conflict, pick up fixes
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 117b7cad31b3..1038ca163890 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -2607,7 +2607,7 @@ void wake_up_new_task(struct task_struct *p, unsigned long clone_flags) { unsigned long flags; struct rq *rq; - int cpu = get_cpu(); + int cpu __maybe_unused = get_cpu(); #ifdef CONFIG_SMP /* @@ -4859,7 +4859,9 @@ SYSCALL_DEFINE3(sched_getaffinity, pid_t, pid, unsigned int, len, int ret; cpumask_var_t mask; - if (len < cpumask_size()) + if (len < nr_cpu_ids) + return -EINVAL; + if (len & (sizeof(unsigned long)-1)) return -EINVAL; if (!alloc_cpumask_var(&mask, GFP_KERNEL)) @@ -4867,10 +4869,12 @@ SYSCALL_DEFINE3(sched_getaffinity, pid_t, pid, unsigned int, len, ret = sched_getaffinity(pid, mask); if (ret == 0) { - if (copy_to_user(user_mask_ptr, mask, cpumask_size())) + size_t retlen = min_t(size_t, len, cpumask_size()); + + if (copy_to_user(user_mask_ptr, mask, retlen)) ret = -EFAULT; else - ret = cpumask_size(); + ret = retlen; } free_cpumask_var(mask); |