diff options
| -rw-r--r-- | fs/proc/array.c | 4 | ||||
| -rw-r--r-- | include/asm-generic/resource.h | 2 | ||||
| -rw-r--r-- | kernel/acct.c | 2 | ||||
| -rw-r--r-- | kernel/sched_debug.c | 2 | ||||
| -rw-r--r-- | kernel/sched_fair.c | 12 | ||||
| -rw-r--r-- | kernel/user.c | 7 |
6 files changed, 18 insertions, 11 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c index eba339ecba2..65c62e1bfd6 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -374,7 +374,9 @@ static cputime_t task_stime(struct task_struct *p) stime = nsec_to_clock_t(p->se.sum_exec_runtime) - cputime_to_clock_t(task_utime(p)); - p->prev_stime = max(p->prev_stime, clock_t_to_cputime(stime)); + if (stime >= 0) + p->prev_stime = max(p->prev_stime, clock_t_to_cputime(stime)); + return p->prev_stime; } #endif diff --git a/include/asm-generic/resource.h b/include/asm-generic/resource.h index cfe3692b23e..a4a22cc3589 100644 --- a/include/asm-generic/resource.h +++ b/include/asm-generic/resource.h @@ -12,7 +12,7 @@ * then it defines them prior including asm-generic/resource.h. ) */ -#define RLIMIT_CPU 0 /* CPU time in ms */ +#define RLIMIT_CPU 0 /* CPU time in sec */ #define RLIMIT_FSIZE 1 /* Maximum filesize */ #define RLIMIT_DATA 2 /* max data size */ #define RLIMIT_STACK 3 /* max stack size */ diff --git a/kernel/acct.c b/kernel/acct.c index fce53d8df8a..cf19547cc9e 100644 --- a/kernel/acct.c +++ b/kernel/acct.c @@ -413,7 +413,7 @@ static u32 encode_float(u64 value) * The acct_process() call is the workhorse of the process * accounting system. The struct acct is built here and then written * into the accounting file. This function should only be called from - * do_exit(). + * do_exit() or when switching to a different output file. */ /* diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c index ca198a797bf..5d0d623a546 100644 --- a/kernel/sched_debug.c +++ b/kernel/sched_debug.c @@ -199,7 +199,7 @@ static int sched_debug_show(struct seq_file *m, void *v) u64 now = ktime_to_ns(ktime_get()); int cpu; - SEQ_printf(m, "Sched Debug Version: v0.06-v22, %s %.*s\n", + SEQ_printf(m, "Sched Debug Version: v0.07, %s %.*s\n", init_utsname()->release, (int)strcspn(init_utsname()->version, " "), init_utsname()->version); diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index ee00da284b1..2f16e15c022 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -22,7 +22,7 @@ /* * Targeted preemption latency for CPU-bound tasks: - * (default: 20ms * ilog(ncpus), units: nanoseconds) + * (default: 20ms * (1 + ilog(ncpus)), units: nanoseconds) * * NOTE: this latency value is not the same as the concept of * 'timeslice length' - timeslices in CFS are of variable length @@ -36,14 +36,14 @@ unsigned int sysctl_sched_latency = 20000000ULL; /* * Minimal preemption granularity for CPU-bound tasks: - * (default: 1 msec * ilog(ncpus), units: nanoseconds) + * (default: 4 msec * (1 + ilog(ncpus)), units: nanoseconds) */ -unsigned int sysctl_sched_min_granularity = 1000000ULL; +unsigned int sysctl_sched_min_granularity = 4000000ULL; /* * is kept at sysctl_sched_latency / sysctl_sched_min_granularity */ -static unsigned int sched_nr_latency = 20; +static unsigned int sched_nr_latency = 5; /* * After fork, child runs first. (default) If set to 0 then @@ -61,7 +61,7 @@ unsigned int __read_mostly sysctl_sched_compat_yield; /* * SCHED_BATCH wake-up granularity. - * (default: 10 msec * ilog(ncpus), units: nanoseconds) + * (default: 10 msec * (1 + ilog(ncpus)), units: nanoseconds) * * This option delays the preemption effects of decoupled workloads * and reduces their over-scheduling. Synchronous workloads will still @@ -71,7 +71,7 @@ unsigned int sysctl_sched_batch_wakeup_granularity = 10000000UL; /* * SCHED_OTHER wake-up granularity. - * (default: 10 msec * ilog(ncpus), units: nanoseconds) + * (default: 10 msec * (1 + ilog(ncpus)), units: nanoseconds) * * This option delays the preemption effects of decoupled workloads * and reduces their over-scheduling. Synchronous workloads will still diff --git a/kernel/user.c b/kernel/user.c index 0f3aa023410..8320a87f3e5 100644 --- a/kernel/user.c +++ b/kernel/user.c @@ -337,8 +337,11 @@ struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid) struct user_struct *new; new = kmem_cache_alloc(uid_cachep, GFP_KERNEL); - if (!new) + if (!new) { + uids_mutex_unlock(); return NULL; + } + new->uid = uid; atomic_set(&new->__count, 1); atomic_set(&new->processes, 0); @@ -355,6 +358,7 @@ struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid) if (alloc_uid_keyring(new, current) < 0) { kmem_cache_free(uid_cachep, new); + uids_mutex_unlock(); return NULL; } @@ -362,6 +366,7 @@ struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid) key_put(new->uid_keyring); key_put(new->session_keyring); kmem_cache_free(uid_cachep, new); + uids_mutex_unlock(); return NULL; } |