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[PATCH] lockdep: annotate on-stack completions

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lockdep needs to have the waitqueue lock initialized for on-stack waitqueues
implicitly initialized by DECLARE_COMPLETION().  Annotate on-stack completions
accordingly.

Has no effect on non-lockdep kernels.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar 2006-07-03 00:25:26 -07:00 committed by Linus Torvalds
parent 366c7f554e
commit 60be6b9a41
6 changed files with 7 additions and 5 deletions
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2
arch/x86_64/kernel/smpboot.c
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@ -775,6 +775,8 @@ static int __cpuinit do_boot_cpu(int cpu, int apicid)
}; };
DECLARE_WORK(work, do_fork_idle, &c_idle); DECLARE_WORK(work, do_fork_idle, &c_idle);
lockdep_set_class(&c_idle.done.wait.lock, &waitqueue_lock_key);
/* allocate memory for gdts of secondary cpus. Hotplug is considered */ /* allocate memory for gdts of secondary cpus. Hotplug is considered */
if (!cpu_gdt_descr[cpu].address && if (!cpu_gdt_descr[cpu].address &&
!(cpu_gdt_descr[cpu].address = get_zeroed_page(GFP_KERNEL))) { !(cpu_gdt_descr[cpu].address = get_zeroed_page(GFP_KERNEL))) {

2
block/ll_rw_blk.c
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@ -2516,7 +2516,7 @@ EXPORT_SYMBOL_GPL(blk_execute_rq_nowait);
int blk_execute_rq(request_queue_t *q, struct gendisk *bd_disk, int blk_execute_rq(request_queue_t *q, struct gendisk *bd_disk,
struct request *rq, int at_head) struct request *rq, int at_head)
{ {
DECLARE_COMPLETION(wait); DECLARE_COMPLETION_ONSTACK(wait);
char sense[SCSI_SENSE_BUFFERSIZE]; char sense[SCSI_SENSE_BUFFERSIZE];
int err = 0; int err = 0;

2
drivers/ide/ide-io.c
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@ -1705,7 +1705,7 @@ int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t actio
{ {
unsigned long flags; unsigned long flags;
ide_hwgroup_t *hwgroup = HWGROUP(drive); ide_hwgroup_t *hwgroup = HWGROUP(drive);
DECLARE_COMPLETION(wait); DECLARE_COMPLETION_ONSTACK(wait);
int where = ELEVATOR_INSERT_BACK, err; int where = ELEVATOR_INSERT_BACK, err;
int must_wait = (action == ide_wait || action == ide_head_wait); int must_wait = (action == ide_wait || action == ide_head_wait);

2
drivers/scsi/libata-core.c
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@ -1001,7 +1001,7 @@ unsigned ata_exec_internal(struct ata_device *dev,
struct ata_queued_cmd *qc; struct ata_queued_cmd *qc;
unsigned int tag, preempted_tag; unsigned int tag, preempted_tag;
u32 preempted_sactive, preempted_qc_active; u32 preempted_sactive, preempted_qc_active;
DECLARE_COMPLETION(wait); DECLARE_COMPLETION_ONSTACK(wait);
unsigned long flags; unsigned long flags;
unsigned int err_mask; unsigned int err_mask;
int rc; int rc;

2
drivers/spi/spi.c
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@ -510,7 +510,7 @@ static void spi_complete(void *arg)
*/ */
int spi_sync(struct spi_device *spi, struct spi_message *message) int spi_sync(struct spi_device *spi, struct spi_message *message)
{ {
DECLARE_COMPLETION(done); DECLARE_COMPLETION_ONSTACK(done);
int status; int status;
message->complete = spi_complete; message->complete = spi_complete;

2
kernel/kmod.c
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@ -233,7 +233,7 @@ static void __call_usermodehelper(void *data)
int call_usermodehelper_keys(char *path, char **argv, char **envp, int call_usermodehelper_keys(char *path, char **argv, char **envp,
struct key *session_keyring, int wait) struct key *session_keyring, int wait)
{ {
DECLARE_COMPLETION(done); DECLARE_COMPLETION_ONSTACK(done);
struct subprocess_info sub_info = { struct subprocess_info sub_info = {
.complete = &done, .complete = &done,
.path = path, .path = path,