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8db049b3d666b3676ff4a976e03c14de302bf9fa
linux/kernel
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Raphael S. Carvalho 8db049b3d6 kernel/pid.c: improve flow of a loop inside alloc_pidmap. 
find_next_offset() searches for an available "cleaned bit" in the
respective pid bitmap (page), so returns the offset if found, otherwise
it returns a value equals to BITS_PER_PAGE.

For example, suppose find_next_offset didn't find any available bit, so
there's no purpose to call mk_pid (Wasteful Cpu Cycles).

Therefore, I found it could be better to call mk_pid after the checking
(offset < BITS_PER_PAGE) returned sucessfully! Another point: If (offset
< BITS_PER_PAGE) results in a "failure", then mk_pid would be called
again afterwards.

[akpm@linux-foundation.org: simplify code]
Signed-off-by: Raphael S. Carvalho <raphael.scarv@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-30 17:04:07 -07:00
..
cpu
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-04-30 08:15:40 -07:00
debug
Merge tag 'for_linux-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb
2013-03-02 08:31:39 -08:00
events
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-04-30 07:41:01 -07:00
gcov
kernel/gcov: remove depends on CONFIG_EXPERIMENTAL
2013-01-11 11:39:33 -08:00
irq
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2013-02-26 20:16:07 -08:00
power
Merge tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2013-02-21 12:05:51 -08:00
sched
workqueue: include workqueue info when printing debug dump of a worker task
2013-04-30 17:04:02 -07:00
time
clockevents: Set dummy handler on CPU_DEAD shutdown
2013-04-25 13:57:04 +02:00
trace
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-04-30 07:41:01 -07:00
.gitignore
kernel/hz.bc: ignore.
2013-04-22 07:09:06 -07:00
acct.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2013-02-26 20:16:07 -08:00
async.c
async: rename and redefine async_func_ptr
2013-03-12 13:59:14 -07:00
audit_tree.c
kernel/audit_tree.c: tree will leak memory when failure occurs in audit_trim_trees()
2013-04-29 15:54:26 -07:00
audit_watch.c
audit: catch possible NULL audit buffers
2013-01-11 14:54:55 -08:00
audit.c
audit: don't check if kauditd is valid every time
2013-04-29 15:54:26 -07:00
audit.h
audit: remove unnecessary #if CONFIG_AUDIT
2013-04-29 15:54:26 -07:00
auditfilter.c
kernel/auditfilter.c: tree and watch will memory leak when failure occurs
2013-04-29 15:54:26 -07:00
auditsc.c
kernel/auditsc.c: use kzalloc instead of kmalloc+memset
2013-04-29 15:54:26 -07:00
backtracetest.c
…
bounds.c
…
capability.c
Add file_ns_capable() helper function for open-time capability checking
2013-04-14 10:06:31 -07:00
cgroup_freezer.c
cgroup: rename ->create/post_create/pre_destroy/destroy() to ->css_alloc/online/offline/free()
2012-11-19 08:13:38 -08:00
cgroup.c
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-04-30 07:43:28 -07:00
compat.c
kernel/compat.c: make do_sysinfo() static
2013-04-30 17:04:03 -07:00
configs.c
…
context_tracking.c
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-02-19 18:19:48 -08:00
cpu_pm.c
kernel/cpu_pm.c: fix various typos
2012-05-31 17:49:27 -07:00
cpu.c
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-02-19 19:04:55 -08:00
cpuset.c
Merge branch 'for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2013-04-29 19:14:20 -07:00
crash_dump.c
…
cred.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2012-12-18 10:55:28 -08:00
delayacct.c
cputime: Use accessors to read task cputime stats
2013-01-27 19:23:31 +01:00
dma.c
…
elfcore.c
…
exec_domain.c
…
exit.c
Revert "lockdep: check that no locks held at freeze time"
2013-03-31 11:38:33 -07:00
extable.c
extable: Flip the sorting message
2013-04-15 13:25:16 +02:00
fork.c
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-04-30 07:43:28 -07:00
freezer.c
freezer: change ptrace_stop/do_signal_stop to use freezable_schedule()
2012-10-26 14:27:49 -07:00
futex_compat.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
2013-02-23 18:50:11 -08:00
futex.c
futex: fix kernel-doc notation and spello
2013-03-12 20:42:10 -07:00
groups.c
…
hrtimer.c
Merge branch 'linus' into timers/core
2013-04-24 20:33:54 +02:00
hung_task.c
…
irq_work.c
Merge branch 'nohz/printk-v8' into irq/core
2013-02-05 00:48:46 +01:00
itimer.c
…
jump_label.c
jump_label: Export jump_label_rate_limit()
2012-08-06 19:00:35 +03:00
kallsyms.c
vsprintf: fix %ps on non symbols when using kallsyms
2012-05-29 16:22:32 -07:00
kcmp.c
kcmp: include linux/ptrace.h
2012-12-20 17:40:19 -08:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
locking: Adjust spin lock inlining Kconfig options
2012-09-13 17:56:13 +02:00
Kconfig.preempt
…
kexec.c
kexec: Use min() and min_t() to simplify logic
2013-04-30 17:04:07 -07:00
kmod.c
kmod: remove call_usermodehelper_fns()
2013-04-30 17:04:06 -07:00
kprobes.c
kprobes: Fix a double lock bug of kprobe_mutex
2013-04-18 08:58:38 -07:00
ksysfs.c
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-12-11 18:10:49 -08:00
kthread.c
kthread: implement probe_kthread_data()
2013-04-30 17:04:02 -07:00
latencytop.c
…
lglock.c
brlocks/lglocks: turn into functions
2012-05-29 23:28:41 -04:00
lockdep_internals.h
…
lockdep_proc.c
lockdep: Use KSYM_NAME_LEN'ed buffer for __get_key_name()
2012-10-24 12:39:09 +02:00
lockdep_states.h
…
lockdep.c
lockdep: Consolidate bug messages into a single print_lockdep_off() function
2013-04-26 08:37:22 +02:00
Makefile
idle: Provide a generic entry point for the idle code
2013-04-08 17:39:23 +02:00
modsign_certificate.S
MODSIGN: Avoid using .incbin in C source
2012-12-14 13:06:44 +10:30
modsign_pubkey.c
keys: use keyring_alloc() to create module signing keyring
2012-12-20 17:40:21 -08:00
module_signing.c
MODSIGN: Don't use enum-type bitfields in module signature info block
2012-12-05 11:27:24 +10:30
module-internal.h
MODSIGN: Move the magic string to the end of a module and eliminate the search
2012-10-19 17:30:40 -07:00
module.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2013-02-26 20:16:07 -08:00
mutex-debug.c
…
mutex-debug.h
…
mutex.c
mutex: Back out architecture specific check for negative mutex count
2013-04-19 09:33:36 +02:00
mutex.h
…
notifier.c
…
nsproxy.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2013-02-26 20:16:07 -08:00
padata.c
padata: use __this_cpu_read per-cpu helper
2012-12-06 17:16:23 +08:00
panic.c
dump_stack: implement arch-specific hardware description in task dumps
2013-04-30 17:04:02 -07:00
params.c
…
pid_namespace.c
pid: Handle the exit of a multi-threaded init.
2013-03-26 03:41:23 -07:00
pid.c
kernel/pid.c: improve flow of a loop inside alloc_pidmap.
2013-04-30 17:04:07 -07:00
posix-cpu-timers.c
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-02-19 19:05:45 -08:00
posix-timers.c
posix-timers: Remove unused variable
2013-04-18 12:51:19 +02:00
printk.c
workqueue: include workqueue info when printing debug dump of a worker task
2013-04-30 17:04:02 -07:00
profile.c
profiling: Remove unused timer hook
2013-01-24 15:37:26 +01:00
ptrace.c
ptrace: add ability to retrieve signals without removing from a queue (v4)
2013-04-30 17:04:05 -07:00
range.c
kernel/range.c: subtract_range: fix the broken phrase issued by printk
2013-04-30 17:04:01 -07:00
rcu.h
rcu: Provide RCU CPU stall warnings for tiny RCU
2013-01-28 22:06:21 -08:00
rcupdate.c
Merge branches 'doctorture.2013.01.29a', 'fixes.2013.01.26a', 'tagcb.2013.01.24a' and 'tiny.2013.01.29b' into HEAD
2013-01-28 22:25:21 -08:00
rcutiny_plugin.h
rcu: Provide RCU CPU stall warnings for tiny RCU
2013-01-28 22:06:21 -08:00
rcutiny.c
Merge branches 'doctorture.2013.01.29a', 'fixes.2013.01.26a', 'tagcb.2013.01.24a' and 'tiny.2013.01.29b' into HEAD
2013-01-28 22:25:21 -08:00
rcutorture.c
rcu: Allow rcutorture to be built at low optimization levels
2013-02-04 12:18:20 -08:00
rcutree_plugin.h
Merge branches 'doc.2013.03.12a', 'fixes.2013.03.13a' and 'idlenocb.2013.03.26b' into HEAD
2013-03-26 08:07:38 -07:00
rcutree_trace.c
rcu: Make RCU_FAST_NO_HZ take advantage of numbered callbacks
2013-03-26 08:04:51 -07:00
rcutree.c
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-04-30 07:39:01 -07:00
rcutree.h
Merge branches 'doc.2013.03.12a', 'fixes.2013.03.13a' and 'idlenocb.2013.03.26b' into HEAD
2013-03-26 08:07:38 -07:00
relay.c
new helper: file_inode(file)
2013-02-22 23:31:31 -05:00
res_counter.c
res_counter: return amount of charges after res_counter_uncharge()
2012-12-18 15:02:12 -08:00
resource.c
mem hotunplug: fix kfree() of bootmem memory
2013-04-29 15:54:40 -07:00
rtmutex_common.h
…
rtmutex-debug.c
sched/rt: Move rt specific bits into new header file
2013-02-07 20:51:08 +01:00
rtmutex-debug.h
…
rtmutex-tester.c
locking/rtmutex/tester: Set correct permissions on sysfs files
2013-04-10 14:48:37 +02:00
rtmutex.c
sched/rt: Move rt specific bits into new header file
2013-02-07 20:51:08 +01:00
rtmutex.h
…
rwsem.c
lockdep, rwsem: provide down_write_nest_lock()
2013-01-11 14:54:55 -08:00
seccomp.c
seccomp: Make syscall skipping and nr changes more consistent
2012-10-02 21:14:29 +10:00
semaphore.c
…
signal.c
coredump: only SIGKILL should interrupt the coredumping task
2013-04-30 17:04:06 -07:00
smp.c
kernel/smp.c: cleanups
2013-04-30 17:04:03 -07:00
smpboot.c
kthread: Prevent unpark race which puts threads on the wrong cpu
2013-04-12 14:18:43 +02:00
smpboot.h
smpboot: Provide infrastructure for percpu hotplug threads
2012-08-13 17:01:07 +02:00
softirq.c
kernel/smp.c: remove 'priv' of call_single_data
2013-04-30 17:04:03 -07:00
spinlock.c
…
srcu.c
srcu: use ACCESS_ONCE() to access sp->completed in srcu_read_lock()
2013-02-07 15:19:36 -08:00
stacktrace.c
…
stop_machine.c
stop_machine: Mark per cpu stopper enabled early
2013-02-26 22:25:17 +01:00
sys_ni.c
module: add syscall to load module from fd
2012-12-14 13:05:22 +10:30
sys.c
kernel/timer.c: move some non timer related syscalls to kernel/sys.c
2013-04-30 17:04:03 -07:00
sysctl_binary.c
sysctl: fix null checking in bin_dn_node_address()
2013-02-27 19:10:21 -08:00
sysctl.c
mm: replace hardcoded 3% with admin_reserve_pages knob
2013-04-29 15:54:36 -07:00
task_work.c
task_work: task_work_add() should not succeed after exit_task_work()
2012-09-13 16:47:34 +02:00
taskstats.c
taskstats: cgroupstats_user_cmd() may leak on error
2012-10-06 03:05:31 +09:00
test_kprobes.c
kernel/: rename random32() to prandom_u32()
2013-04-29 18:28:42 -07:00
time.c
timekeeping: Use inject_offset in warp_clock
2013-03-15 16:50:20 -07:00
timeconst.bc
kernel: Replace timeconst.pl with a bc script
2013-02-16 23:17:25 +01:00
timer.c
kernel/timer.c: move some non timer related syscalls to kernel/sys.c
2013-04-30 17:04:03 -07:00
tracepoint.c
Merge tag 'trace-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
2013-04-29 13:55:38 -07:00
tsacct.c
cputime: Use accessors to read task cputime stats
2013-01-27 19:23:31 +01:00
uid16.c
…
up.c
…
user_namespace.c
userns: Changing any namespace id mappings should require privileges
2013-04-14 18:11:32 -07:00
user-return-notifier.c
hlist: drop the node parameter from iterators
2013-02-27 19:10:24 -08:00
user.c
userns: Restrict when proc and sysfs can be mounted
2013-03-27 07:50:08 -07:00
utsname_sysctl.c
kernel/utsname_sysctl.c: put get/get_uts() into CONFIG_PROC_SYSCTL code block
2013-02-27 19:10:22 -08:00
utsname.c
kernel/utsname.c: fix wrong comment about clone_uts_ns()
2013-02-27 19:10:22 -08:00
wait.c
propagate name change to comments in kernel source
2012-12-06 10:39:54 +01:00
watchdog.c
watchdog: Add comments to explain the watchdog_disabled variable
2013-03-14 08:24:05 +01:00
workqueue_internal.h
workqueue: include workqueue info when printing debug dump of a worker task
2013-04-30 17:04:02 -07:00
workqueue.c
workqueue: include workqueue info when printing debug dump of a worker task
2013-04-30 17:04:02 -07:00