diff options
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/Kconfig | 2 | ||||
-rw-r--r-- | arch/arm/kernel/smp_twd.c | 64 | ||||
-rw-r--r-- | arch/arm/mach-highbank/Kconfig | 2 | ||||
-rw-r--r-- | arch/arm/mach-imx/Kconfig | 2 | ||||
-rw-r--r-- | arch/arm/mach-omap2/Kconfig | 2 | ||||
-rw-r--r-- | arch/arm/mach-realview/Kconfig | 8 | ||||
-rw-r--r-- | arch/arm/mach-spear/Kconfig | 2 | ||||
-rw-r--r-- | arch/arm/mach-tegra/Kconfig | 2 | ||||
-rw-r--r-- | arch/arm/mach-ux500/Kconfig | 2 | ||||
-rw-r--r-- | arch/arm/mach-vexpress/Kconfig | 2 | ||||
-rw-r--r-- | arch/arm/mach-zynq/Kconfig | 2 |
11 files changed, 56 insertions, 34 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 53d3a356f61f..374a1d8900ec 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig | |||
@@ -638,7 +638,7 @@ config ARCH_SHMOBILE | |||
638 | select CLKDEV_LOOKUP | 638 | select CLKDEV_LOOKUP |
639 | select GENERIC_CLOCKEVENTS | 639 | select GENERIC_CLOCKEVENTS |
640 | select HAVE_ARM_SCU if SMP | 640 | select HAVE_ARM_SCU if SMP |
641 | select HAVE_ARM_TWD if LOCAL_TIMERS | 641 | select HAVE_ARM_TWD if SMP |
642 | select HAVE_CLK | 642 | select HAVE_CLK |
643 | select HAVE_MACH_CLKDEV | 643 | select HAVE_MACH_CLKDEV |
644 | select HAVE_SMP | 644 | select HAVE_SMP |
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index 90525d9d290b..aac1495b44de 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c | |||
@@ -11,6 +11,7 @@ | |||
11 | #include <linux/init.h> | 11 | #include <linux/init.h> |
12 | #include <linux/kernel.h> | 12 | #include <linux/kernel.h> |
13 | #include <linux/clk.h> | 13 | #include <linux/clk.h> |
14 | #include <linux/cpu.h> | ||
14 | #include <linux/delay.h> | 15 | #include <linux/delay.h> |
15 | #include <linux/device.h> | 16 | #include <linux/device.h> |
16 | #include <linux/err.h> | 17 | #include <linux/err.h> |
@@ -24,7 +25,6 @@ | |||
24 | 25 | ||
25 | #include <asm/smp_plat.h> | 26 | #include <asm/smp_plat.h> |
26 | #include <asm/smp_twd.h> | 27 | #include <asm/smp_twd.h> |
27 | #include <asm/localtimer.h> | ||
28 | 28 | ||
29 | /* set up by the platform code */ | 29 | /* set up by the platform code */ |
30 | static void __iomem *twd_base; | 30 | static void __iomem *twd_base; |
@@ -33,7 +33,7 @@ static struct clk *twd_clk; | |||
33 | static unsigned long twd_timer_rate; | 33 | static unsigned long twd_timer_rate; |
34 | static DEFINE_PER_CPU(bool, percpu_setup_called); | 34 | static DEFINE_PER_CPU(bool, percpu_setup_called); |
35 | 35 | ||
36 | static struct clock_event_device __percpu **twd_evt; | 36 | static struct clock_event_device __percpu *twd_evt; |
37 | static int twd_ppi; | 37 | static int twd_ppi; |
38 | 38 | ||
39 | static void twd_set_mode(enum clock_event_mode mode, | 39 | static void twd_set_mode(enum clock_event_mode mode, |
@@ -90,8 +90,10 @@ static int twd_timer_ack(void) | |||
90 | return 0; | 90 | return 0; |
91 | } | 91 | } |
92 | 92 | ||
93 | static void twd_timer_stop(struct clock_event_device *clk) | 93 | static void twd_timer_stop(void) |
94 | { | 94 | { |
95 | struct clock_event_device *clk = __this_cpu_ptr(twd_evt); | ||
96 | |||
95 | twd_set_mode(CLOCK_EVT_MODE_UNUSED, clk); | 97 | twd_set_mode(CLOCK_EVT_MODE_UNUSED, clk); |
96 | disable_percpu_irq(clk->irq); | 98 | disable_percpu_irq(clk->irq); |
97 | } | 99 | } |
@@ -106,7 +108,7 @@ static void twd_update_frequency(void *new_rate) | |||
106 | { | 108 | { |
107 | twd_timer_rate = *((unsigned long *) new_rate); | 109 | twd_timer_rate = *((unsigned long *) new_rate); |
108 | 110 | ||
109 | clockevents_update_freq(*__this_cpu_ptr(twd_evt), twd_timer_rate); | 111 | clockevents_update_freq(__this_cpu_ptr(twd_evt), twd_timer_rate); |
110 | } | 112 | } |
111 | 113 | ||
112 | static int twd_rate_change(struct notifier_block *nb, | 114 | static int twd_rate_change(struct notifier_block *nb, |
@@ -132,7 +134,7 @@ static struct notifier_block twd_clk_nb = { | |||
132 | 134 | ||
133 | static int twd_clk_init(void) | 135 | static int twd_clk_init(void) |
134 | { | 136 | { |
135 | if (twd_evt && *__this_cpu_ptr(twd_evt) && !IS_ERR(twd_clk)) | 137 | if (twd_evt && __this_cpu_ptr(twd_evt) && !IS_ERR(twd_clk)) |
136 | return clk_notifier_register(twd_clk, &twd_clk_nb); | 138 | return clk_notifier_register(twd_clk, &twd_clk_nb); |
137 | 139 | ||
138 | return 0; | 140 | return 0; |
@@ -151,7 +153,7 @@ static void twd_update_frequency(void *data) | |||
151 | { | 153 | { |
152 | twd_timer_rate = clk_get_rate(twd_clk); | 154 | twd_timer_rate = clk_get_rate(twd_clk); |
153 | 155 | ||
154 | clockevents_update_freq(*__this_cpu_ptr(twd_evt), twd_timer_rate); | 156 | clockevents_update_freq(__this_cpu_ptr(twd_evt), twd_timer_rate); |
155 | } | 157 | } |
156 | 158 | ||
157 | static int twd_cpufreq_transition(struct notifier_block *nb, | 159 | static int twd_cpufreq_transition(struct notifier_block *nb, |
@@ -177,7 +179,7 @@ static struct notifier_block twd_cpufreq_nb = { | |||
177 | 179 | ||
178 | static int twd_cpufreq_init(void) | 180 | static int twd_cpufreq_init(void) |
179 | { | 181 | { |
180 | if (twd_evt && *__this_cpu_ptr(twd_evt) && !IS_ERR(twd_clk)) | 182 | if (twd_evt && __this_cpu_ptr(twd_evt) && !IS_ERR(twd_clk)) |
181 | return cpufreq_register_notifier(&twd_cpufreq_nb, | 183 | return cpufreq_register_notifier(&twd_cpufreq_nb, |
182 | CPUFREQ_TRANSITION_NOTIFIER); | 184 | CPUFREQ_TRANSITION_NOTIFIER); |
183 | 185 | ||
@@ -228,7 +230,7 @@ static void __cpuinit twd_calibrate_rate(void) | |||
228 | 230 | ||
229 | static irqreturn_t twd_handler(int irq, void *dev_id) | 231 | static irqreturn_t twd_handler(int irq, void *dev_id) |
230 | { | 232 | { |
231 | struct clock_event_device *evt = *(struct clock_event_device **)dev_id; | 233 | struct clock_event_device *evt = dev_id; |
232 | 234 | ||
233 | if (twd_timer_ack()) { | 235 | if (twd_timer_ack()) { |
234 | evt->event_handler(evt); | 236 | evt->event_handler(evt); |
@@ -265,9 +267,9 @@ static void twd_get_clock(struct device_node *np) | |||
265 | /* | 267 | /* |
266 | * Setup the local clock events for a CPU. | 268 | * Setup the local clock events for a CPU. |
267 | */ | 269 | */ |
268 | static int __cpuinit twd_timer_setup(struct clock_event_device *clk) | 270 | static void __cpuinit twd_timer_setup(void) |
269 | { | 271 | { |
270 | struct clock_event_device **this_cpu_clk; | 272 | struct clock_event_device *clk = __this_cpu_ptr(twd_evt); |
271 | int cpu = smp_processor_id(); | 273 | int cpu = smp_processor_id(); |
272 | 274 | ||
273 | /* | 275 | /* |
@@ -276,9 +278,9 @@ static int __cpuinit twd_timer_setup(struct clock_event_device *clk) | |||
276 | */ | 278 | */ |
277 | if (per_cpu(percpu_setup_called, cpu)) { | 279 | if (per_cpu(percpu_setup_called, cpu)) { |
278 | __raw_writel(0, twd_base + TWD_TIMER_CONTROL); | 280 | __raw_writel(0, twd_base + TWD_TIMER_CONTROL); |
279 | clockevents_register_device(*__this_cpu_ptr(twd_evt)); | 281 | clockevents_register_device(clk); |
280 | enable_percpu_irq(clk->irq, 0); | 282 | enable_percpu_irq(clk->irq, 0); |
281 | return 0; | 283 | return; |
282 | } | 284 | } |
283 | per_cpu(percpu_setup_called, cpu) = true; | 285 | per_cpu(percpu_setup_called, cpu) = true; |
284 | 286 | ||
@@ -297,27 +299,37 @@ static int __cpuinit twd_timer_setup(struct clock_event_device *clk) | |||
297 | clk->set_mode = twd_set_mode; | 299 | clk->set_mode = twd_set_mode; |
298 | clk->set_next_event = twd_set_next_event; | 300 | clk->set_next_event = twd_set_next_event; |
299 | clk->irq = twd_ppi; | 301 | clk->irq = twd_ppi; |
300 | 302 | clk->cpumask = cpumask_of(cpu); | |
301 | this_cpu_clk = __this_cpu_ptr(twd_evt); | ||
302 | *this_cpu_clk = clk; | ||
303 | 303 | ||
304 | clockevents_config_and_register(clk, twd_timer_rate, | 304 | clockevents_config_and_register(clk, twd_timer_rate, |
305 | 0xf, 0xffffffff); | 305 | 0xf, 0xffffffff); |
306 | enable_percpu_irq(clk->irq, 0); | 306 | enable_percpu_irq(clk->irq, 0); |
307 | } | ||
307 | 308 | ||
308 | return 0; | 309 | static int __cpuinit twd_timer_cpu_notify(struct notifier_block *self, |
310 | unsigned long action, void *hcpu) | ||
311 | { | ||
312 | switch (action & ~CPU_TASKS_FROZEN) { | ||
313 | case CPU_STARTING: | ||
314 | twd_timer_setup(); | ||
315 | break; | ||
316 | case CPU_DYING: | ||
317 | twd_timer_stop(); | ||
318 | break; | ||
319 | } | ||
320 | |||
321 | return NOTIFY_OK; | ||
309 | } | 322 | } |
310 | 323 | ||
311 | static struct local_timer_ops twd_lt_ops __cpuinitdata = { | 324 | static struct notifier_block twd_timer_cpu_nb __cpuinitdata = { |
312 | .setup = twd_timer_setup, | 325 | .notifier_call = twd_timer_cpu_notify, |
313 | .stop = twd_timer_stop, | ||
314 | }; | 326 | }; |
315 | 327 | ||
316 | static int __init twd_local_timer_common_register(struct device_node *np) | 328 | static int __init twd_local_timer_common_register(struct device_node *np) |
317 | { | 329 | { |
318 | int err; | 330 | int err; |
319 | 331 | ||
320 | twd_evt = alloc_percpu(struct clock_event_device *); | 332 | twd_evt = alloc_percpu(struct clock_event_device); |
321 | if (!twd_evt) { | 333 | if (!twd_evt) { |
322 | err = -ENOMEM; | 334 | err = -ENOMEM; |
323 | goto out_free; | 335 | goto out_free; |
@@ -329,12 +341,22 @@ static int __init twd_local_timer_common_register(struct device_node *np) | |||
329 | goto out_free; | 341 | goto out_free; |
330 | } | 342 | } |
331 | 343 | ||
332 | err = local_timer_register(&twd_lt_ops); | 344 | err = register_cpu_notifier(&twd_timer_cpu_nb); |
333 | if (err) | 345 | if (err) |
334 | goto out_irq; | 346 | goto out_irq; |
335 | 347 | ||
336 | twd_get_clock(np); | 348 | twd_get_clock(np); |
337 | 349 | ||
350 | /* | ||
351 | * Immediately configure the timer on the boot CPU, unless we need | ||
352 | * jiffies to be incrementing to calibrate the rate in which case | ||
353 | * setup the timer in late_time_init. | ||
354 | */ | ||
355 | if (twd_timer_rate) | ||
356 | twd_timer_setup(); | ||
357 | else | ||
358 | late_time_init = twd_timer_setup; | ||
359 | |||
338 | return 0; | 360 | return 0; |
339 | 361 | ||
340 | out_irq: | 362 | out_irq: |
diff --git a/arch/arm/mach-highbank/Kconfig b/arch/arm/mach-highbank/Kconfig index cd9fcb1cd7ab..6acbdabf6222 100644 --- a/arch/arm/mach-highbank/Kconfig +++ b/arch/arm/mach-highbank/Kconfig | |||
@@ -12,7 +12,7 @@ config ARCH_HIGHBANK | |||
12 | select CPU_V7 | 12 | select CPU_V7 |
13 | select GENERIC_CLOCKEVENTS | 13 | select GENERIC_CLOCKEVENTS |
14 | select HAVE_ARM_SCU | 14 | select HAVE_ARM_SCU |
15 | select HAVE_ARM_TWD if LOCAL_TIMERS | 15 | select HAVE_ARM_TWD if SMP |
16 | select HAVE_SMP | 16 | select HAVE_SMP |
17 | select MAILBOX | 17 | select MAILBOX |
18 | select PL320_MBOX | 18 | select PL320_MBOX |
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index ba44328464f3..c8adc79028b8 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig | |||
@@ -798,7 +798,7 @@ config SOC_IMX6Q | |||
798 | select COMMON_CLK | 798 | select COMMON_CLK |
799 | select CPU_V7 | 799 | select CPU_V7 |
800 | select HAVE_ARM_SCU if SMP | 800 | select HAVE_ARM_SCU if SMP |
801 | select HAVE_ARM_TWD if LOCAL_TIMERS | 801 | select HAVE_ARM_TWD if SMP |
802 | select HAVE_CAN_FLEXCAN if CAN | 802 | select HAVE_CAN_FLEXCAN if CAN |
803 | select HAVE_IMX_ANATOP | 803 | select HAVE_IMX_ANATOP |
804 | select HAVE_IMX_GPC | 804 | select HAVE_IMX_GPC |
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index f49cd51e162a..edb950a1af05 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig | |||
@@ -90,7 +90,7 @@ config ARCH_OMAP4 | |||
90 | select CACHE_L2X0 | 90 | select CACHE_L2X0 |
91 | select CPU_V7 | 91 | select CPU_V7 |
92 | select HAVE_ARM_SCU if SMP | 92 | select HAVE_ARM_SCU if SMP |
93 | select HAVE_ARM_TWD if LOCAL_TIMERS | 93 | select HAVE_ARM_TWD if SMP |
94 | select HAVE_SMP | 94 | select HAVE_SMP |
95 | select LOCAL_TIMERS if SMP | 95 | select LOCAL_TIMERS if SMP |
96 | select OMAP_INTERCONNECT | 96 | select OMAP_INTERCONNECT |
diff --git a/arch/arm/mach-realview/Kconfig b/arch/arm/mach-realview/Kconfig index d210c0f9c2c4..9db2029aa632 100644 --- a/arch/arm/mach-realview/Kconfig +++ b/arch/arm/mach-realview/Kconfig | |||
@@ -13,7 +13,7 @@ config REALVIEW_EB_A9MP | |||
13 | depends on MACH_REALVIEW_EB | 13 | depends on MACH_REALVIEW_EB |
14 | select CPU_V7 | 14 | select CPU_V7 |
15 | select HAVE_ARM_SCU if SMP | 15 | select HAVE_ARM_SCU if SMP |
16 | select HAVE_ARM_TWD if LOCAL_TIMERS | 16 | select HAVE_ARM_TWD if SMP |
17 | select HAVE_SMP | 17 | select HAVE_SMP |
18 | select MIGHT_HAVE_CACHE_L2X0 | 18 | select MIGHT_HAVE_CACHE_L2X0 |
19 | help | 19 | help |
@@ -26,7 +26,7 @@ config REALVIEW_EB_ARM11MP | |||
26 | select ARCH_HAS_BARRIERS if SMP | 26 | select ARCH_HAS_BARRIERS if SMP |
27 | select CPU_V6K | 27 | select CPU_V6K |
28 | select HAVE_ARM_SCU if SMP | 28 | select HAVE_ARM_SCU if SMP |
29 | select HAVE_ARM_TWD if LOCAL_TIMERS | 29 | select HAVE_ARM_TWD if SMP |
30 | select HAVE_SMP | 30 | select HAVE_SMP |
31 | select MIGHT_HAVE_CACHE_L2X0 | 31 | select MIGHT_HAVE_CACHE_L2X0 |
32 | help | 32 | help |
@@ -48,7 +48,7 @@ config MACH_REALVIEW_PB11MP | |||
48 | select ARM_GIC | 48 | select ARM_GIC |
49 | select CPU_V6K | 49 | select CPU_V6K |
50 | select HAVE_ARM_SCU if SMP | 50 | select HAVE_ARM_SCU if SMP |
51 | select HAVE_ARM_TWD if LOCAL_TIMERS | 51 | select HAVE_ARM_TWD if SMP |
52 | select HAVE_PATA_PLATFORM | 52 | select HAVE_PATA_PLATFORM |
53 | select HAVE_SMP | 53 | select HAVE_SMP |
54 | select MIGHT_HAVE_CACHE_L2X0 | 54 | select MIGHT_HAVE_CACHE_L2X0 |
@@ -92,7 +92,7 @@ config MACH_REALVIEW_PBX | |||
92 | select ARCH_SPARSEMEM_ENABLE if CPU_V7 && !REALVIEW_HIGH_PHYS_OFFSET | 92 | select ARCH_SPARSEMEM_ENABLE if CPU_V7 && !REALVIEW_HIGH_PHYS_OFFSET |
93 | select ARM_GIC | 93 | select ARM_GIC |
94 | select HAVE_ARM_SCU if SMP | 94 | select HAVE_ARM_SCU if SMP |
95 | select HAVE_ARM_TWD if LOCAL_TIMERS | 95 | select HAVE_ARM_TWD if SMP |
96 | select HAVE_PATA_PLATFORM | 96 | select HAVE_PATA_PLATFORM |
97 | select HAVE_SMP | 97 | select HAVE_SMP |
98 | select MIGHT_HAVE_CACHE_L2X0 | 98 | select MIGHT_HAVE_CACHE_L2X0 |
diff --git a/arch/arm/mach-spear/Kconfig b/arch/arm/mach-spear/Kconfig index 442917eedff3..df0d59afeb40 100644 --- a/arch/arm/mach-spear/Kconfig +++ b/arch/arm/mach-spear/Kconfig | |||
@@ -23,7 +23,7 @@ config ARCH_SPEAR13XX | |||
23 | select CPU_V7 | 23 | select CPU_V7 |
24 | select GPIO_SPEAR_SPICS | 24 | select GPIO_SPEAR_SPICS |
25 | select HAVE_ARM_SCU if SMP | 25 | select HAVE_ARM_SCU if SMP |
26 | select HAVE_ARM_TWD if LOCAL_TIMERS | 26 | select HAVE_ARM_TWD if SMP |
27 | select HAVE_SMP | 27 | select HAVE_SMP |
28 | select MIGHT_HAVE_CACHE_L2X0 | 28 | select MIGHT_HAVE_CACHE_L2X0 |
29 | select PINCTRL | 29 | select PINCTRL |
diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig index 84d72fc36dfe..1f3ea1f6cedf 100644 --- a/arch/arm/mach-tegra/Kconfig +++ b/arch/arm/mach-tegra/Kconfig | |||
@@ -8,7 +8,7 @@ config ARCH_TEGRA | |||
8 | select COMMON_CLK | 8 | select COMMON_CLK |
9 | select GENERIC_CLOCKEVENTS | 9 | select GENERIC_CLOCKEVENTS |
10 | select HAVE_ARM_SCU if SMP | 10 | select HAVE_ARM_SCU if SMP |
11 | select HAVE_ARM_TWD if LOCAL_TIMERS | 11 | select HAVE_ARM_TWD if SMP |
12 | select HAVE_CLK | 12 | select HAVE_CLK |
13 | select HAVE_SMP | 13 | select HAVE_SMP |
14 | select MIGHT_HAVE_CACHE_L2X0 | 14 | select MIGHT_HAVE_CACHE_L2X0 |
diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig index 6a4387e39df8..0614ee2b0523 100644 --- a/arch/arm/mach-ux500/Kconfig +++ b/arch/arm/mach-ux500/Kconfig | |||
@@ -8,7 +8,7 @@ config ARCH_U8500 | |||
8 | select CPU_V7 | 8 | select CPU_V7 |
9 | select GENERIC_CLOCKEVENTS | 9 | select GENERIC_CLOCKEVENTS |
10 | select HAVE_ARM_SCU if SMP | 10 | select HAVE_ARM_SCU if SMP |
11 | select HAVE_ARM_TWD if LOCAL_TIMERS | 11 | select HAVE_ARM_TWD if SMP |
12 | select HAVE_SMP | 12 | select HAVE_SMP |
13 | select MIGHT_HAVE_CACHE_L2X0 | 13 | select MIGHT_HAVE_CACHE_L2X0 |
14 | help | 14 | help |
diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig index 5907e10c37fd..5bfdd73dea19 100644 --- a/arch/arm/mach-vexpress/Kconfig +++ b/arch/arm/mach-vexpress/Kconfig | |||
@@ -10,7 +10,7 @@ config ARCH_VEXPRESS | |||
10 | select CPU_V7 | 10 | select CPU_V7 |
11 | select GENERIC_CLOCKEVENTS | 11 | select GENERIC_CLOCKEVENTS |
12 | select HAVE_ARM_SCU if SMP | 12 | select HAVE_ARM_SCU if SMP |
13 | select HAVE_ARM_TWD if LOCAL_TIMERS | 13 | select HAVE_ARM_TWD if SMP |
14 | select HAVE_CLK | 14 | select HAVE_CLK |
15 | select HAVE_PATA_PLATFORM | 15 | select HAVE_PATA_PLATFORM |
16 | select HAVE_SMP | 16 | select HAVE_SMP |
diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig index c1d61f281e68..04f8a4a6e755 100644 --- a/arch/arm/mach-zynq/Kconfig +++ b/arch/arm/mach-zynq/Kconfig | |||
@@ -6,7 +6,7 @@ config ARCH_ZYNQ | |||
6 | select CPU_V7 | 6 | select CPU_V7 |
7 | select GENERIC_CLOCKEVENTS | 7 | select GENERIC_CLOCKEVENTS |
8 | select HAVE_ARM_SCU if SMP | 8 | select HAVE_ARM_SCU if SMP |
9 | select HAVE_ARM_TWD if LOCAL_TIMERS | 9 | select HAVE_ARM_TWD if SMP |
10 | select ICST | 10 | select ICST |
11 | select MIGHT_HAVE_CACHE_L2X0 | 11 | select MIGHT_HAVE_CACHE_L2X0 |
12 | select USE_OF | 12 | select USE_OF |