Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/…

…linux/kernel/git/tip/tip

Pull timer updates from Thomas Gleixner:
 "Yet another big pile of changes:

   - More year 2038 work from Arnd slowly reaching the point where we
     need to think about the syscalls themself.

   - A new timer function which allows to conditionally (re)arm a timer
     only when it's either not running or the new expiry time is sooner
     than the armed expiry time. This allows to use a single timer for
     multiple timeout requirements w/o caring about the first expiry
     time at the call site.

   - A new NMI safe accessor to clock real time for the printk timestamp
     work. Can be used by tracing, perf as well if required.

   - A large number of timer setup conversions from Kees which got
     collected here because either maintainers requested so or they
     simply got ignored. As Kees pointed out already there are a few
     trivial merge conflicts and some redundant commits which was
     unavoidable due to the size of this conversion effort.

   - Avoid a redundant iteration in the timer wheel softirq processing.

   - Provide a mechanism to treat RTC implementations depending on their
     hardware properties, i.e. don't inflict the write at the 0.5
     seconds boundary which originates from the PC CMOS RTC to all RTCs.
     No functional change as drivers need to be updated separately.

   - The usual small updates to core code clocksource drivers. Nothing
     really exciting"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (111 commits)
  timers: Add a function to start/reduce a timer
  pstore: Use ktime_get_real_fast_ns() instead of __getnstimeofday()
  timer: Prepare to change all DEFINE_TIMER() callbacks
  netfilter: ipvs: Convert timers to use timer_setup()
  scsi: qla2xxx: Convert timers to use timer_setup()
  block/aoe: discover_timer: Convert timers to use timer_setup()
  ide: Convert timers to use timer_setup()
  drbd: Convert timers to use timer_setup()
  mailbox: Convert timers to use timer_setup()
  crypto: Convert timers to use timer_setup()
  drivers/pcmcia: omap1: Fix error in automated timer conversion
  ARM: footbridge: Fix typo in timer conversion
  drivers/sgi-xp: Convert timers to use timer_setup()
  drivers/pcmcia: Convert timers to use timer_setup()
  drivers/memstick: Convert timers to use timer_setup()
  drivers/macintosh: Convert timers to use timer_setup()
  hwrng/xgene-rng: Convert timers to use timer_setup()
  auxdisplay: Convert timers to use timer_setup()
  sparc/led: Convert timers to use timer_setup()
  mips: ip22/32: Convert timers to use timer_setup()
  ...

Documentation/devicetree/bindings/timer/renesas,cmt.txt

@@ -20,16 +20,16 @@ Required Properties:
 		(CMT1 on sh73a0 and r8a7740)
 		This is a fallback for the above renesas,cmt-48-* entries.
 
-    - "renesas,cmt0-r8a73a4" for the 32-bit CMT0 device included in r8a73a4.
-    - "renesas,cmt1-r8a73a4" for the 48-bit CMT1 device included in r8a73a4.
-    - "renesas,cmt0-r8a7790" for the 32-bit CMT0 device included in r8a7790.
-    - "renesas,cmt1-r8a7790" for the 48-bit CMT1 device included in r8a7790.
-    - "renesas,cmt0-r8a7791" for the 32-bit CMT0 device included in r8a7791.
-    - "renesas,cmt1-r8a7791" for the 48-bit CMT1 device included in r8a7791.
-    - "renesas,cmt0-r8a7793" for the 32-bit CMT0 device included in r8a7793.
-    - "renesas,cmt1-r8a7793" for the 48-bit CMT1 device included in r8a7793.
-    - "renesas,cmt0-r8a7794" for the 32-bit CMT0 device included in r8a7794.
-    - "renesas,cmt1-r8a7794" for the 48-bit CMT1 device included in r8a7794.
+    - "renesas,r8a73a4-cmt0" for the 32-bit CMT0 device included in r8a73a4.
+    - "renesas,r8a73a4-cmt1" for the 48-bit CMT1 device included in r8a73a4.
+    - "renesas,r8a7790-cmt0" for the 32-bit CMT0 device included in r8a7790.
+    - "renesas,r8a7790-cmt1" for the 48-bit CMT1 device included in r8a7790.
+    - "renesas,r8a7791-cmt0" for the 32-bit CMT0 device included in r8a7791.
+    - "renesas,r8a7791-cmt1" for the 48-bit CMT1 device included in r8a7791.
+    - "renesas,r8a7793-cmt0" for the 32-bit CMT0 device included in r8a7793.
+    - "renesas,r8a7793-cmt1" for the 48-bit CMT1 device included in r8a7793.
+    - "renesas,r8a7794-cmt0" for the 32-bit CMT0 device included in r8a7794.
+    - "renesas,r8a7794-cmt1" for the 48-bit CMT1 device included in r8a7794.
 
     - "renesas,rcar-gen2-cmt0" for 32-bit CMT0 devices included in R-Car Gen2.
     - "renesas,rcar-gen2-cmt1" for 48-bit CMT1 devices included in R-Car Gen2.
@@ -46,7 +46,7 @@ Required Properties:
 Example: R8A7790 (R-Car H2) CMT0 and CMT1 nodes
 
 	cmt0: timer@ffca0000 {
-		compatible = "renesas,cmt0-r8a7790", "renesas,rcar-gen2-cmt0";
+		compatible = "renesas,r8a7790-cmt0", "renesas,rcar-gen2-cmt0";
 		reg = <0 0xffca0000 0 0x1004>;
 		interrupts = <0 142 IRQ_TYPE_LEVEL_HIGH>,
 			     <0 142 IRQ_TYPE_LEVEL_HIGH>;
@@ -55,7 +55,7 @@ Example: R8A7790 (R-Car H2) CMT0 and CMT1 nodes
 	};
 
 	cmt1: timer@e6130000 {
-		compatible = "renesas,cmt1-r8a7790", "renesas,rcar-gen2-cmt1";
+		compatible = "renesas,r8a7790-cmt1", "renesas,rcar-gen2-cmt1";
 		reg = <0 0xe6130000 0 0x1004>;
 		interrupts = <0 120 IRQ_TYPE_LEVEL_HIGH>,
 			     <0 121 IRQ_TYPE_LEVEL_HIGH>,

MAINTAINERS

@@ -3444,7 +3444,8 @@ M:	Thomas Gleixner <[email protected]>
 L:	[email protected]
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
 S:	Supported
-F:	drivers/clocksource
+F:	drivers/clocksource/
+F:	Documentation/devicetree/bindings/timer/
 
 CMPC ACPI DRIVER
 M:	Thadeu Lima de Souza Cascardo <[email protected]>

arch/arm/mach-footbridge/dc21285.c

@@ -136,19 +136,14 @@ struct pci_ops dc21285_ops = {
 static struct timer_list serr_timer;
 static struct timer_list perr_timer;
 
-static void dc21285_enable_error(unsigned long __data)
+static void dc21285_enable_error(struct timer_list *timer)
 {
-	switch (__data) {
-	case IRQ_PCI_SERR:
-		del_timer(&serr_timer);
-		break;
-
-	case IRQ_PCI_PERR:
-		del_timer(&perr_timer);
-		break;
-	}
+	del_timer(timer);
 
-	enable_irq(__data);
+	if (timer == &serr_timer)
+		enable_irq(IRQ_PCI_SERR);
+	else if (timer == &perr_timer)
+		enable_irq(IRQ_PCI_PERR);
 }
 
 /*
@@ -323,13 +318,8 @@ void __init dc21285_preinit(void)
 		*CSR_PCICMD = (*CSR_PCICMD & 0xffff) | PCICMD_ERROR_BITS;
 	}
 
-	init_timer(&serr_timer);
-	init_timer(&perr_timer);
-
-	serr_timer.data = IRQ_PCI_SERR;
-	serr_timer.function = dc21285_enable_error;
-	perr_timer.data = IRQ_PCI_PERR;
-	perr_timer.function = dc21285_enable_error;
+	timer_setup(&serr_timer, dc21285_enable_error, 0);
+	timer_setup(&perr_timer, dc21285_enable_error, 0);
 
 	/*
 	 * We don't care if these fail.

arch/arm/mach-ixp4xx/dsmg600-setup.c

@@ -175,7 +175,7 @@ static int power_button_countdown;
 #define PBUTTON_HOLDDOWN_COUNT 4 /* 2 secs */
 
 static void dsmg600_power_handler(unsigned long data);
-static DEFINE_TIMER(dsmg600_power_timer, dsmg600_power_handler, 0, 0);
+static DEFINE_TIMER(dsmg600_power_timer, dsmg600_power_handler);
 
 static void dsmg600_power_handler(unsigned long data)
 {

arch/arm/mach-ixp4xx/nas100d-setup.c

@@ -198,7 +198,7 @@ static int power_button_countdown;
 #define PBUTTON_HOLDDOWN_COUNT 4 /* 2 secs */
 
 static void nas100d_power_handler(unsigned long data);
-static DEFINE_TIMER(nas100d_power_timer, nas100d_power_handler, 0, 0);
+static DEFINE_TIMER(nas100d_power_timer, nas100d_power_handler);
 
 static void nas100d_power_handler(unsigned long data)
 {

arch/arm/mach-pxa/lubbock.c

@@ -381,14 +381,11 @@ static struct pxafb_mach_info sharp_lm8v31 = {
 
 #define	MMC_POLL_RATE		msecs_to_jiffies(1000)
 
-static void lubbock_mmc_poll(unsigned long);
 static irq_handler_t mmc_detect_int;
+static void *mmc_detect_int_data;
+static struct timer_list mmc_timer;
 
-static struct timer_list mmc_timer = {
-	.function	= lubbock_mmc_poll,
-};
-
-static void lubbock_mmc_poll(unsigned long data)
+static void lubbock_mmc_poll(struct timer_list *unused)
 {
 	unsigned long flags;
 
@@ -401,7 +398,7 @@ static void lubbock_mmc_poll(unsigned long data)
 	if (LUB_IRQ_SET_CLR & (1 << 0))
 		mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 	else {
-		(void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
+		(void) mmc_detect_int(LUBBOCK_SD_IRQ, mmc_detect_int_data);
 		enable_irq(LUBBOCK_SD_IRQ);
 	}
 }
@@ -421,8 +418,8 @@ static int lubbock_mci_init(struct device *dev,
 {
 	/* detect card insert/eject */
 	mmc_detect_int = detect_int;
-	init_timer(&mmc_timer);
-	mmc_timer.data = (unsigned long) data;
+	mmc_detect_int_data = data;
+	timer_setup(&mmc_timer, lubbock_mmc_poll, 0);
 	return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
 			   0, "lubbock-sd-detect", data);
 }

arch/arm/mach-pxa/sharpsl_pm.c

@@ -341,7 +341,7 @@ static void sharpsl_charge_toggle(struct work_struct *private_)
 	sharpsl_pm.charge_start_time = jiffies;
 }
 
-static void sharpsl_ac_timer(unsigned long data)
+static void sharpsl_ac_timer(struct timer_list *unused)
 {
 	int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
 
@@ -366,7 +366,7 @@ static irqreturn_t sharpsl_ac_isr(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static void sharpsl_chrg_full_timer(unsigned long data)
+static void sharpsl_chrg_full_timer(struct timer_list *unused)
 {
 	dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies);
 
@@ -841,9 +841,9 @@ static int sharpsl_pm_probe(struct platform_device *pdev)
 	sharpsl_pm.charge_mode = CHRG_OFF;
 	sharpsl_pm.flags = 0;
 
-	setup_timer(&sharpsl_pm.ac_timer, sharpsl_ac_timer, 0UL);
+	timer_setup(&sharpsl_pm.ac_timer, sharpsl_ac_timer, 0);
 
-	setup_timer(&sharpsl_pm.chrg_full_timer, sharpsl_chrg_full_timer, 0UL);
+	timer_setup(&sharpsl_pm.chrg_full_timer, sharpsl_chrg_full_timer, 0);
 
 	led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger);
 

arch/ia64/include/asm/sn/bte.h

@@ -17,6 +17,8 @@
 #include <asm/sn/types.h>
 #include <asm/sn/shub_mmr.h>
 
+struct nodepda_s;
+
 #define IBCT_NOTIFY             (0x1UL << 4)
 #define IBCT_ZFIL_MODE          (0x1UL << 0)
 
@@ -210,7 +212,7 @@ struct bteinfo_s {
  */
 extern bte_result_t bte_copy(u64, u64, u64, u64, void *);
 extern bte_result_t bte_unaligned_copy(u64, u64, u64, u64);
-extern void bte_error_handler(unsigned long);
+extern void bte_error_handler(struct nodepda_s *);
 
 #define bte_zero(dest, len, mode, notification) \
 	bte_copy(0, dest, len, ((mode) | BTE_ZERO_FILL), notification)

arch/ia64/kernel/mca.c

@@ -1513,7 +1513,7 @@ ia64_mca_cmc_int_caller(int cmc_irq, void *arg)
  *
  */
 static void
-ia64_mca_cmc_poll (unsigned long dummy)
+ia64_mca_cmc_poll (struct timer_list *unused)
 {
 	/* Trigger a CMC interrupt cascade  */
 	platform_send_ipi(cpumask_first(cpu_online_mask), IA64_CMCP_VECTOR,
@@ -1590,7 +1590,7 @@ ia64_mca_cpe_int_caller(int cpe_irq, void *arg)
  *
  */
 static void
-ia64_mca_cpe_poll (unsigned long dummy)
+ia64_mca_cpe_poll (struct timer_list *unused)
 {
 	/* Trigger a CPE interrupt cascade  */
 	platform_send_ipi(cpumask_first(cpu_online_mask), IA64_CPEP_VECTOR,
@@ -2098,7 +2098,7 @@ ia64_mca_late_init(void)
 		return 0;
 
 	/* Setup the CMCI/P vector and handler */
-	setup_timer(&cmc_poll_timer, ia64_mca_cmc_poll, 0UL);
+	timer_setup(&cmc_poll_timer, ia64_mca_cmc_poll, 0);
 
 	/* Unmask/enable the vector */
 	cmc_polling_enabled = 0;
@@ -2109,7 +2109,7 @@ ia64_mca_late_init(void)
 #ifdef CONFIG_ACPI
 	/* Setup the CPEI/P vector and handler */
 	cpe_vector = acpi_request_vector(ACPI_INTERRUPT_CPEI);
-	setup_timer(&cpe_poll_timer, ia64_mca_cpe_poll, 0UL);
+	timer_setup(&cpe_poll_timer, ia64_mca_cpe_poll, 0);
 
 	{
 		unsigned int irq;

arch/ia64/kernel/salinfo.c

@@ -263,7 +263,7 @@ salinfo_timeout_check(struct salinfo_data *data)
 }
 
 static void
-salinfo_timeout (unsigned long arg)
+salinfo_timeout(struct timer_list *unused)
 {
 	ia64_mlogbuf_dump();
 	salinfo_timeout_check(salinfo_data + SAL_INFO_TYPE_MCA);
@@ -623,9 +623,8 @@ salinfo_init(void)
 
 	*sdir++ = salinfo_dir;
 
-	init_timer(&salinfo_timer);
+	timer_setup(&salinfo_timer, salinfo_timeout, 0);
 	salinfo_timer.expires = jiffies + SALINFO_TIMER_DELAY;
-	salinfo_timer.function = &salinfo_timeout;
 	add_timer(&salinfo_timer);
 
 	i = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "ia64/salinfo:online",

arch/ia64/sn/kernel/bte.c

@@ -219,7 +219,7 @@ bte_result_t bte_copy(u64 src, u64 dest, u64 len, u64 mode, void *notification)
 				BTE_LNSTAT_LOAD(bte), *bte->most_rcnt_na) );
 			bte->bte_error_count++;
 			bte->bh_error = IBLS_ERROR;
-			bte_error_handler((unsigned long)NODEPDA(bte->bte_cnode));
+			bte_error_handler(NODEPDA(bte->bte_cnode));
 			*bte->most_rcnt_na = BTE_WORD_AVAILABLE;
 			goto retry_bteop;
 		}
@@ -414,6 +414,12 @@ EXPORT_SYMBOL(bte_unaligned_copy);
  * Block Transfer Engine initialization functions.
  *
  ***********************************************************************/
+static void bte_recovery_timeout(struct timer_list *t)
+{
+	struct nodepda_s *nodepda = from_timer(nodepda, t, bte_recovery_timer);
+
+	bte_error_handler(nodepda);
+}
 
 /*
  * bte_init_node(nodepda, cnode)
@@ -436,9 +442,7 @@ void bte_init_node(nodepda_t * mynodepda, cnodeid_t cnode)
 	 * will point at this one bte_recover structure to get the lock.
 	 */
 	spin_lock_init(&mynodepda->bte_recovery_lock);
-	init_timer(&mynodepda->bte_recovery_timer);
-	mynodepda->bte_recovery_timer.function = bte_error_handler;
-	mynodepda->bte_recovery_timer.data = (unsigned long)mynodepda;
+	timer_setup(&mynodepda->bte_recovery_timer, bte_recovery_timeout, 0);
 
 	for (i = 0; i < BTES_PER_NODE; i++) {
 		u64 *base_addr;

arch/ia64/sn/kernel/bte_error.c

@@ -27,15 +27,12 @@
  * transfers to be queued.
  */
 
-void bte_error_handler(unsigned long);
-
 /*
  * Wait until all BTE related CRBs are completed
  * and then reset the interfaces.
  */
-int shub1_bte_error_handler(unsigned long _nodepda)
+static int shub1_bte_error_handler(struct nodepda_s *err_nodepda)
 {
-	struct nodepda_s *err_nodepda = (struct nodepda_s *)_nodepda;
 	struct timer_list *recovery_timer = &err_nodepda->bte_recovery_timer;
 	nasid_t nasid;
 	int i;
@@ -131,9 +128,8 @@ int shub1_bte_error_handler(unsigned long _nodepda)
  * Wait until all BTE related CRBs are completed
  * and then reset the interfaces.
  */
-int shub2_bte_error_handler(unsigned long _nodepda)
+static int shub2_bte_error_handler(struct nodepda_s *err_nodepda)
 {
-	struct nodepda_s *err_nodepda = (struct nodepda_s *)_nodepda;
 	struct timer_list *recovery_timer = &err_nodepda->bte_recovery_timer;
 	struct bteinfo_s *bte;
 	nasid_t nasid;
@@ -170,9 +166,8 @@ int shub2_bte_error_handler(unsigned long _nodepda)
  * Wait until all BTE related CRBs are completed
  * and then reset the interfaces.
  */
-void bte_error_handler(unsigned long _nodepda)
+void bte_error_handler(struct nodepda_s *err_nodepda)
 {
-	struct nodepda_s *err_nodepda = (struct nodepda_s *)_nodepda;
 	spinlock_t *recovery_lock = &err_nodepda->bte_recovery_lock;
 	int i;
 	unsigned long irq_flags;
@@ -199,12 +194,12 @@ void bte_error_handler(unsigned long _nodepda)
 	}
 
 	if (is_shub1()) {
-		if (shub1_bte_error_handler(_nodepda)) {
+		if (shub1_bte_error_handler(err_nodepda)) {
 			spin_unlock_irqrestore(recovery_lock, irq_flags);
 			return;
 		}
 	} else {
-		if (shub2_bte_error_handler(_nodepda)) {
+		if (shub2_bte_error_handler(err_nodepda)) {
 			spin_unlock_irqrestore(recovery_lock, irq_flags);
 			return;
 		}
@@ -255,6 +250,6 @@ bte_crb_error_handler(cnodeid_t cnode, int btenum,
 
 	BTE_PRINTK(("Got an error on cnode %d bte %d: HW error type 0x%x\n",
 		bte->bte_cnode, bte->bte_num, ioe->ie_errortype));
-	bte_error_handler((unsigned long) NODEPDA(cnode));
+	bte_error_handler(NODEPDA(cnode));
 }
 

arch/ia64/sn/kernel/huberror.c

@@ -50,7 +50,7 @@ static irqreturn_t hub_eint_handler(int irq, void *arg)
 			if ((int)ret_stuff.v0)
 				panic("%s: Fatal TIO Error", __func__);
 		} else
-			bte_error_handler((unsigned long)NODEPDA(nasid_to_cnodeid(nasid)));
+			bte_error_handler(NODEPDA(nasid_to_cnodeid(nasid)));
 
 	return IRQ_HANDLED;
 }

arch/ia64/sn/kernel/mca.c

@@ -72,17 +72,16 @@ static void sn_cpei_handler(int irq, void *devid, struct pt_regs *regs)
 	ia64_sn_plat_cpei_handler();
 }
 
-static void sn_cpei_timer_handler(unsigned long dummy)
+static void sn_cpei_timer_handler(struct timer_list *unused)
 {
 	sn_cpei_handler(-1, NULL, NULL);
 	mod_timer(&sn_cpei_timer, jiffies + CPEI_INTERVAL);
 }
 
 void sn_init_cpei_timer(void)
 {
-	init_timer(&sn_cpei_timer);
+	timer_setup(&sn_cpei_timer, sn_cpei_timer_handler, 0);
 	sn_cpei_timer.expires = jiffies + CPEI_INTERVAL;
-	sn_cpei_timer.function = sn_cpei_timer_handler;
 	add_timer(&sn_cpei_timer);
 }
 

arch/m68k/amiga/amisound.c

@@ -66,7 +66,7 @@ void __init amiga_init_sound(void)
 }
 
 static void nosound( unsigned long ignored );
-static DEFINE_TIMER(sound_timer, nosound, 0, 0);
+static DEFINE_TIMER(sound_timer, nosound);
 
 void amiga_mksound( unsigned int hz, unsigned int ticks )
 {

arch/m68k/mac/macboing.c

@@ -57,7 +57,7 @@ static void ( *mac_special_bell )( unsigned int, unsigned int, unsigned int );
 /*
  * our timer to start/continue/stop the bell
  */
-static DEFINE_TIMER(mac_sound_timer, mac_nosound, 0, 0);
+static DEFINE_TIMER(mac_sound_timer, mac_nosound);
 
 /*
  * Sort of initialize the sound chip (called from mac_mksound on the first