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authorIngo Molnar <mingo@elte.hu>2006-07-03 00:25:26 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-03 15:27:09 -0700
commit60be6b9a41cb0da0df7a9f11486da56baebf04cd (patch)
tree26cb558d0d57183fdbf9136ad54b581328d6f016
parent366c7f554e888e51b8395f9b07b273fe775c7ff3 (diff)
[PATCH] lockdep: annotate on-stack completions
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>
-rw-r--r--arch/x86_64/kernel/smpboot.c2
-rw-r--r--block/ll_rw_blk.c2
-rw-r--r--drivers/ide/ide-io.c2
-rw-r--r--drivers/scsi/libata-core.c2
-rw-r--r--drivers/spi/spi.c2
-rw-r--r--kernel/kmod.c2
6 files changed, 7 insertions, 5 deletions
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index 9705a6a384f..b7c70596979 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -775,6 +775,8 @@ static int __cpuinit do_boot_cpu(int cpu, int apicid)
};
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 */
if (!cpu_gdt_descr[cpu].address &&
!(cpu_gdt_descr[cpu].address = get_zeroed_page(GFP_KERNEL))) {
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 5813d63c20a..ab17c7224bb 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -2516,7 +2516,7 @@ EXPORT_SYMBOL_GPL(blk_execute_rq_nowait);
int blk_execute_rq(request_queue_t *q, struct gendisk *bd_disk,
struct request *rq, int at_head)
{
- DECLARE_COMPLETION(wait);
+ DECLARE_COMPLETION_ONSTACK(wait);
char sense[SCSI_SENSE_BUFFERSIZE];
int err = 0;
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index d6bf1ec9632..fb6795236e7 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -1705,7 +1705,7 @@ int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t actio
{
unsigned long flags;
ide_hwgroup_t *hwgroup = HWGROUP(drive);
- DECLARE_COMPLETION(wait);
+ DECLARE_COMPLETION_ONSTACK(wait);
int where = ELEVATOR_INSERT_BACK, err;
int must_wait = (action == ide_wait || action == ide_head_wait);
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 82caba46429..1c960ac1617 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -1001,7 +1001,7 @@ unsigned ata_exec_internal(struct ata_device *dev,
struct ata_queued_cmd *qc;
unsigned int tag, preempted_tag;
u32 preempted_sactive, preempted_qc_active;
- DECLARE_COMPLETION(wait);
+ DECLARE_COMPLETION_ONSTACK(wait);
unsigned long flags;
unsigned int err_mask;
int rc;
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index ed1cdf6ac8f..146298ad737 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -510,7 +510,7 @@ static void spi_complete(void *arg)
*/
int spi_sync(struct spi_device *spi, struct spi_message *message)
{
- DECLARE_COMPLETION(done);
+ DECLARE_COMPLETION_ONSTACK(done);
int status;
message->complete = spi_complete;
diff --git a/kernel/kmod.c b/kernel/kmod.c
index 1b7157af051..1d32defa38a 100644
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -233,7 +233,7 @@ static void __call_usermodehelper(void *data)
int call_usermodehelper_keys(char *path, char **argv, char **envp,
struct key *session_keyring, int wait)
{
- DECLARE_COMPLETION(done);
+ DECLARE_COMPLETION_ONSTACK(done);
struct subprocess_info sub_info = {
.complete = &done,
.path = path,