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Date: Thu, 28 Sep 2006 21:46:57 +1000
From: Benjamin Herrenschmidt <benh@...nel.crashing.org>
To: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: linux-kernel <linux-kernel@...r.kernel.org>,
Andrew Morton <akpm@...l.org>, Ingo Molnar <mingo@...e.hu>,
Arjan van de Ven <arjan@...radead.org>,
"James E.J. Bottomley" <James.Bottomley@...elEye.com>,
Jens Axboe <axboe@...e.de>, Russell King <rmk@....linux.org.uk>
Subject: Re: [PATCH] completions: lockdep annotate on stack completions
On Thu, 2006-09-28 at 11:52 +0200, Peter Zijlstra wrote:
> All on stack DECLARE_COMPLETIONs should be replaced by:
> DECLARE_COMPLETION_ONSTACK
>
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Acked-by: Ingo Molnar <mingo@...e.hu>
As far as the powerpc/macintosh bits are concernd, it's fine
Acked-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> ---
> arch/arm/kernel/ecard.c | 2 +-
> arch/i386/kernel/smpboot.c | 2 +-
> arch/powerpc/platforms/powermac/cpufreq_64.c | 2 +-
> arch/powerpc/platforms/powermac/nvram.c | 4 ++--
> block/as-iosched.c | 2 +-
> block/cfq-iosched.c | 2 +-
> drivers/block/DAC960.c | 2 +-
> drivers/block/cciss.c | 6 +++---
> drivers/block/cciss_scsi.c | 2 +-
> drivers/block/paride/pd.c | 2 +-
> drivers/block/pktcdvd.c | 2 +-
> drivers/ide/ide-tape.c | 2 +-
> drivers/macintosh/smu.c | 4 ++--
> drivers/macintosh/windfarm_smu_controls.c | 2 +-
> drivers/macintosh/windfarm_smu_sensors.c | 2 +-
> drivers/s390/scsi/zfcp_scsi.c | 2 +-
> drivers/scsi/53c700.c | 2 +-
> drivers/scsi/aic7xxx/aic79xx_osm.c | 4 ++--
> drivers/scsi/aic7xxx/aic7xxx_osm.c | 2 +-
> drivers/scsi/gdth.c | 4 ++--
> drivers/scsi/qla1280.c | 4 ++--
> drivers/usb/gadget/inode.c | 2 +-
> drivers/usb/gadget/omap_udc.c | 2 +-
> net/ipv4/ipvs/ip_vs_sync.c | 2 +-
> 24 files changed, 31 insertions(+), 31 deletions(-)
>
> Index: linux-2.6/arch/arm/kernel/ecard.c
> ===================================================================
> --- linux-2.6.orig/arch/arm/kernel/ecard.c
> +++ linux-2.6/arch/arm/kernel/ecard.c
> @@ -295,7 +295,7 @@ ecard_task(void * unused)
> */
> static void ecard_call(struct ecard_request *req)
> {
> - DECLARE_COMPLETION(completion);
> + DECLARE_COMPLETION_ONSTACK(completion);
>
> req->complete = &completion;
>
> Index: linux-2.6/arch/i386/kernel/smpboot.c
> ===================================================================
> --- linux-2.6.orig/arch/i386/kernel/smpboot.c
> +++ linux-2.6/arch/i386/kernel/smpboot.c
> @@ -1058,7 +1058,7 @@ static void __cpuinit do_warm_boot_cpu(v
>
> static int __cpuinit __smp_prepare_cpu(int cpu)
> {
> - DECLARE_COMPLETION(done);
> + DECLARE_COMPLETION_ONSTACK(done);
> struct warm_boot_cpu_info info;
> struct work_struct task;
> int apicid, ret;
> Index: linux-2.6/arch/powerpc/platforms/powermac/cpufreq_64.c
> ===================================================================
> --- linux-2.6.orig/arch/powerpc/platforms/powermac/cpufreq_64.c
> +++ linux-2.6/arch/powerpc/platforms/powermac/cpufreq_64.c
> @@ -104,7 +104,7 @@ static void g5_smu_switch_volt(int speed
> {
> struct smu_simple_cmd cmd;
>
> - DECLARE_COMPLETION(comp);
> + DECLARE_COMPLETION_ONSTACK(comp);
> smu_queue_simple(&cmd, SMU_CMD_POWER_COMMAND, 8, smu_done_complete,
> &comp, 'V', 'S', 'L', 'E', 'W',
> 0xff, g5_fvt_cur+1, speed_mode);
> Index: linux-2.6/arch/powerpc/platforms/powermac/nvram.c
> ===================================================================
> --- linux-2.6.orig/arch/powerpc/platforms/powermac/nvram.c
> +++ linux-2.6/arch/powerpc/platforms/powermac/nvram.c
> @@ -195,7 +195,7 @@ static void pmu_nvram_complete(struct ad
> static unsigned char pmu_nvram_read_byte(int addr)
> {
> struct adb_request req;
> - DECLARE_COMPLETION(req_complete);
> + DECLARE_COMPLETION_ONSTACK(req_complete);
>
> req.arg = system_state == SYSTEM_RUNNING ? &req_complete : NULL;
> if (pmu_request(&req, pmu_nvram_complete, 3, PMU_READ_NVRAM,
> @@ -211,7 +211,7 @@ static unsigned char pmu_nvram_read_byte
> static void pmu_nvram_write_byte(int addr, unsigned char val)
> {
> struct adb_request req;
> - DECLARE_COMPLETION(req_complete);
> + DECLARE_COMPLETION_ONSTACK(req_complete);
>
> req.arg = system_state == SYSTEM_RUNNING ? &req_complete : NULL;
> if (pmu_request(&req, pmu_nvram_complete, 4, PMU_WRITE_NVRAM,
> Index: linux-2.6/block/as-iosched.c
> ===================================================================
> --- linux-2.6.orig/block/as-iosched.c
> +++ linux-2.6/block/as-iosched.c
> @@ -1828,7 +1828,7 @@ static int __init as_init(void)
>
> static void __exit as_exit(void)
> {
> - DECLARE_COMPLETION(all_gone);
> + DECLARE_COMPLETION_ONSTACK(all_gone);
> elv_unregister(&iosched_as);
> ioc_gone = &all_gone;
> /* ioc_gone's update must be visible before reading ioc_count */
> Index: linux-2.6/block/cfq-iosched.c
> ===================================================================
> --- linux-2.6.orig/block/cfq-iosched.c
> +++ linux-2.6/block/cfq-iosched.c
> @@ -2463,7 +2463,7 @@ static int __init cfq_init(void)
>
> static void __exit cfq_exit(void)
> {
> - DECLARE_COMPLETION(all_gone);
> + DECLARE_COMPLETION_ONSTACK(all_gone);
> elv_unregister(&iosched_cfq);
> ioc_gone = &all_gone;
> /* ioc_gone's update must be visible before reading ioc_count */
> Index: linux-2.6/drivers/block/DAC960.c
> ===================================================================
> --- linux-2.6.orig/drivers/block/DAC960.c
> +++ linux-2.6/drivers/block/DAC960.c
> @@ -770,7 +770,7 @@ static void DAC960_P_QueueCommand(DAC960
> static void DAC960_ExecuteCommand(DAC960_Command_T *Command)
> {
> DAC960_Controller_T *Controller = Command->Controller;
> - DECLARE_COMPLETION(Completion);
> + DECLARE_COMPLETION_ONSTACK(Completion);
> unsigned long flags;
> Command->Completion = &Completion;
>
> Index: linux-2.6/drivers/block/cciss.c
> ===================================================================
> --- linux-2.6.orig/drivers/block/cciss.c
> +++ linux-2.6/drivers/block/cciss.c
> @@ -879,7 +879,7 @@ static int cciss_ioctl(struct inode *ino
> char *buff = NULL;
> u64bit temp64;
> unsigned long flags;
> - DECLARE_COMPLETION(wait);
> + DECLARE_COMPLETION_ONSTACK(wait);
>
> if (!arg)
> return -EINVAL;
> @@ -997,7 +997,7 @@ static int cciss_ioctl(struct inode *ino
> BYTE sg_used = 0;
> int status = 0;
> int i;
> - DECLARE_COMPLETION(wait);
> + DECLARE_COMPLETION_ONSTACK(wait);
> __u32 left;
> __u32 sz;
> BYTE __user *data_ptr;
> @@ -1792,7 +1792,7 @@ static int sendcmd_withirq(__u8 cmd,
> u64bit buff_dma_handle;
> unsigned long flags;
> int return_status;
> - DECLARE_COMPLETION(wait);
> + DECLARE_COMPLETION_ONSTACK(wait);
>
> if ((c = cmd_alloc(h, 0)) == NULL)
> return -ENOMEM;
> Index: linux-2.6/drivers/block/cciss_scsi.c
> ===================================================================
> --- linux-2.6.orig/drivers/block/cciss_scsi.c
> +++ linux-2.6/drivers/block/cciss_scsi.c
> @@ -766,7 +766,7 @@ cciss_scsi_do_simple_cmd(ctlr_info_t *c,
> int direction)
> {
> unsigned long flags;
> - DECLARE_COMPLETION(wait);
> + DECLARE_COMPLETION_ONSTACK(wait);
>
> cp->cmd_type = CMD_IOCTL_PEND; // treat this like an ioctl
> cp->scsi_cmd = NULL;
> Index: linux-2.6/drivers/block/paride/pd.c
> ===================================================================
> --- linux-2.6.orig/drivers/block/paride/pd.c
> +++ linux-2.6/drivers/block/paride/pd.c
> @@ -713,7 +713,7 @@ static void do_pd_request(request_queue_
> static int pd_special_command(struct pd_unit *disk,
> enum action (*func)(struct pd_unit *disk))
> {
> - DECLARE_COMPLETION(wait);
> + DECLARE_COMPLETION_ONSTACK(wait);
> struct request rq;
> int err = 0;
>
> Index: linux-2.6/drivers/block/pktcdvd.c
> ===================================================================
> --- linux-2.6.orig/drivers/block/pktcdvd.c
> +++ linux-2.6/drivers/block/pktcdvd.c
> @@ -348,7 +348,7 @@ static int pkt_generic_packet(struct pkt
> char sense[SCSI_SENSE_BUFFERSIZE];
> request_queue_t *q;
> struct request *rq;
> - DECLARE_COMPLETION(wait);
> + DECLARE_COMPLETION_ONSTACK(wait);
> int err = 0;
>
> q = bdev_get_queue(pd->bdev);
> Index: linux-2.6/drivers/ide/ide-tape.c
> ===================================================================
> --- linux-2.6.orig/drivers/ide/ide-tape.c
> +++ linux-2.6/drivers/ide/ide-tape.c
> @@ -2764,7 +2764,7 @@ static void idetape_add_stage_tail (ide_
> */
> static void idetape_wait_for_request (ide_drive_t *drive, struct request *rq)
> {
> - DECLARE_COMPLETION(wait);
> + DECLARE_COMPLETION_ONSTACK(wait);
> idetape_tape_t *tape = drive->driver_data;
>
> #if IDETAPE_DEBUG_BUGS
> Index: linux-2.6/drivers/macintosh/smu.c
> ===================================================================
> --- linux-2.6.orig/drivers/macintosh/smu.c
> +++ linux-2.6/drivers/macintosh/smu.c
> @@ -870,7 +870,7 @@ int smu_queue_i2c(struct smu_i2c_cmd *cm
>
> static int smu_read_datablock(u8 *dest, unsigned int addr, unsigned int len)
> {
> - DECLARE_COMPLETION(comp);
> + DECLARE_COMPLETION_ONSTACK(comp);
> unsigned int chunk;
> struct smu_cmd cmd;
> int rc;
> @@ -917,7 +917,7 @@ static int smu_read_datablock(u8 *dest,
>
> static struct smu_sdbp_header *smu_create_sdb_partition(int id)
> {
> - DECLARE_COMPLETION(comp);
> + DECLARE_COMPLETION_ONSTACK(comp);
> struct smu_simple_cmd cmd;
> unsigned int addr, len, tlen;
> struct smu_sdbp_header *hdr;
> Index: linux-2.6/drivers/macintosh/windfarm_smu_controls.c
> ===================================================================
> --- linux-2.6.orig/drivers/macintosh/windfarm_smu_controls.c
> +++ linux-2.6/drivers/macintosh/windfarm_smu_controls.c
> @@ -56,7 +56,7 @@ static int smu_set_fan(int pwm, u8 id, u
> {
> struct smu_cmd cmd;
> u8 buffer[16];
> - DECLARE_COMPLETION(comp);
> + DECLARE_COMPLETION_ONSTACK(comp);
> int rc;
>
> /* Fill SMU command structure */
> Index: linux-2.6/drivers/macintosh/windfarm_smu_sensors.c
> ===================================================================
> --- linux-2.6.orig/drivers/macintosh/windfarm_smu_sensors.c
> +++ linux-2.6/drivers/macintosh/windfarm_smu_sensors.c
> @@ -67,7 +67,7 @@ static void smu_ads_release(struct wf_se
> static int smu_read_adc(u8 id, s32 *value)
> {
> struct smu_simple_cmd cmd;
> - DECLARE_COMPLETION(comp);
> + DECLARE_COMPLETION_ONSTACK(comp);
> int rc;
>
> rc = smu_queue_simple(&cmd, SMU_CMD_READ_ADC, 1,
> Index: linux-2.6/drivers/s390/scsi/zfcp_scsi.c
> ===================================================================
> --- linux-2.6.orig/drivers/s390/scsi/zfcp_scsi.c
> +++ linux-2.6/drivers/s390/scsi/zfcp_scsi.c
> @@ -301,7 +301,7 @@ zfcp_scsi_command_sync(struct zfcp_unit
> int use_timer)
> {
> int ret;
> - DECLARE_COMPLETION(wait);
> + DECLARE_COMPLETION_ONSTACK(wait);
>
> scpnt->SCp.ptr = (void *) &wait; /* silent re-use */
> scpnt->scsi_done = zfcp_scsi_command_sync_handler;
> Index: linux-2.6/drivers/scsi/53c700.c
> ===================================================================
> --- linux-2.6.orig/drivers/scsi/53c700.c
> +++ linux-2.6/drivers/scsi/53c700.c
> @@ -1939,7 +1939,7 @@ NCR_700_abort(struct scsi_cmnd * SCp)
> STATIC int
> NCR_700_bus_reset(struct scsi_cmnd * SCp)
> {
> - DECLARE_COMPLETION(complete);
> + DECLARE_COMPLETION_ONSTACK(complete);
> struct NCR_700_Host_Parameters *hostdata =
> (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0];
>
> Index: linux-2.6/drivers/scsi/aic7xxx/aic79xx_osm.c
> ===================================================================
> --- linux-2.6.orig/drivers/scsi/aic7xxx/aic79xx_osm.c
> +++ linux-2.6/drivers/scsi/aic7xxx/aic79xx_osm.c
> @@ -646,7 +646,7 @@ ahd_linux_dev_reset(struct scsi_cmnd *cm
> struct ahd_initiator_tinfo *tinfo;
> struct ahd_tmode_tstate *tstate;
> unsigned long flags;
> - DECLARE_COMPLETION(done);
> + DECLARE_COMPLETION_ONSTACK(done);
>
> reset_scb = NULL;
> paused = FALSE;
> @@ -2251,7 +2251,7 @@ done:
> if (paused)
> ahd_unpause(ahd);
> if (wait) {
> - DECLARE_COMPLETION(done);
> + DECLARE_COMPLETION_ONSTACK(done);
>
> ahd->platform_data->eh_done = &done;
> ahd_unlock(ahd, &flags);
> Index: linux-2.6/drivers/scsi/aic7xxx/aic7xxx_osm.c
> ===================================================================
> --- linux-2.6.orig/drivers/scsi/aic7xxx/aic7xxx_osm.c
> +++ linux-2.6/drivers/scsi/aic7xxx/aic7xxx_osm.c
> @@ -2335,7 +2335,7 @@ done:
> if (paused)
> ahc_unpause(ahc);
> if (wait) {
> - DECLARE_COMPLETION(done);
> + DECLARE_COMPLETION_ONSTACK(done);
>
> ahc->platform_data->eh_done = &done;
> ahc_unlock(ahc, &flags);
> Index: linux-2.6/drivers/scsi/gdth.c
> ===================================================================
> --- linux-2.6.orig/drivers/scsi/gdth.c
> +++ linux-2.6/drivers/scsi/gdth.c
> @@ -724,7 +724,7 @@ int __gdth_execute(struct scsi_device *s
> int timeout, u32 *info)
> {
> Scsi_Cmnd *scp;
> - DECLARE_COMPLETION(wait);
> + DECLARE_COMPLETION_ONSTACK(wait);
> int rval;
>
> scp = kmalloc(sizeof(*scp), GFP_KERNEL);
> @@ -764,7 +764,7 @@ int __gdth_execute(struct scsi_device *s
> {
> Scsi_Cmnd *scp = scsi_allocate_device(sdev, 1, FALSE);
> unsigned bufflen = gdtcmd ? sizeof(gdth_cmd_str) : 0;
> - DECLARE_COMPLETION(wait);
> + DECLARE_COMPLETION_ONSTACK(wait);
> int rval;
>
> if (!scp)
> Index: linux-2.6/drivers/scsi/qla1280.c
> ===================================================================
> --- linux-2.6.orig/drivers/scsi/qla1280.c
> +++ linux-2.6/drivers/scsi/qla1280.c
> @@ -813,7 +813,7 @@ qla1280_error_action(struct scsi_cmnd *c
> uint16_t data;
> unsigned char *handle;
> int result, i;
> - DECLARE_COMPLETION(wait);
> + DECLARE_COMPLETION_ONSTACK(wait);
> struct timer_list timer;
>
> ha = (struct scsi_qla_host *)(CMD_HOST(cmd)->hostdata);
> @@ -2406,7 +2406,7 @@ qla1280_mailbox_command(struct scsi_qla_
> uint16_t *optr, *iptr;
> uint16_t __iomem *mptr;
> uint16_t data;
> - DECLARE_COMPLETION(wait);
> + DECLARE_COMPLETION_ONSTACK(wait);
> struct timer_list timer;
>
> ENTER("qla1280_mailbox_command");
> Index: linux-2.6/drivers/usb/gadget/inode.c
> ===================================================================
> --- linux-2.6.orig/drivers/usb/gadget/inode.c
> +++ linux-2.6/drivers/usb/gadget/inode.c
> @@ -342,7 +342,7 @@ fail:
> static ssize_t
> ep_io (struct ep_data *epdata, void *buf, unsigned len)
> {
> - DECLARE_COMPLETION (done);
> + DECLARE_COMPLETION_ONSTACK (done);
> int value;
>
> spin_lock_irq (&epdata->dev->lock);
> Index: linux-2.6/drivers/usb/gadget/omap_udc.c
> ===================================================================
> --- linux-2.6.orig/drivers/usb/gadget/omap_udc.c
> +++ linux-2.6/drivers/usb/gadget/omap_udc.c
> @@ -2869,7 +2869,7 @@ cleanup0:
>
> static int __exit omap_udc_remove(struct platform_device *pdev)
> {
> - DECLARE_COMPLETION(done);
> + DECLARE_COMPLETION_ONSTACK(done);
>
> if (!udc)
> return -ENODEV;
> Index: linux-2.6/net/ipv4/ipvs/ip_vs_sync.c
> ===================================================================
> --- linux-2.6.orig/net/ipv4/ipvs/ip_vs_sync.c
> +++ linux-2.6/net/ipv4/ipvs/ip_vs_sync.c
> @@ -836,7 +836,7 @@ static int fork_sync_thread(void *startu
>
> int start_sync_thread(int state, char *mcast_ifn, __u8 syncid)
> {
> - DECLARE_COMPLETION(startup);
> + DECLARE_COMPLETION_ONSTACK(startup);
> pid_t pid;
>
> if ((state == IP_VS_STATE_MASTER && sync_master_pid) ||
>
-
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