[PATCH 06/13] m68k: split heartbeat out of timer function
From: Arnd Bergmann <arnd@arndb.de>
Date: 2020-10-08 15:48:48
Also in:
linux-m68k, lkml
Subsystem:
m68k architecture, m68k on hp9000/300, the rest · Maintainers:
Geert Uytterhoeven, Philip Blundell, Linus Torvalds
The heartbeat functionality is mostly separate from the actual timer interrupt handling, and it is only used on five platforms. Split it out into a separate function and call that directly from the timer irq on those platforms. Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- arch/m68k/amiga/config.c | 1 + arch/m68k/apollo/config.c | 1 + arch/m68k/atari/time.c | 2 ++ arch/m68k/hp300/time.c | 1 + arch/m68k/include/asm/machdep.h | 7 +++++++ arch/m68k/kernel/time.c | 7 +++++-- arch/m68k/q40/q40ints.c | 2 ++ 7 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/arch/m68k/amiga/config.c b/arch/m68k/amiga/config.c
index bee9f240f35d..29f92333119e 100644
--- a/arch/m68k/amiga/config.c
+++ b/arch/m68k/amiga/config.c@@ -480,6 +480,7 @@ static irqreturn_t ciab_timer_handler(int irq, void *dev_id) clk_total += jiffy_ticks; clk_offset = 0; timer_routine(0, NULL); + timer_heartbeat(); return IRQ_HANDLED; }
diff --git a/arch/m68k/apollo/config.c b/arch/m68k/apollo/config.c
index 762da5d7a415..30915f1a8760 100644
--- a/arch/m68k/apollo/config.c
+++ b/arch/m68k/apollo/config.c@@ -173,6 +173,7 @@ irqreturn_t dn_timer_int(int irq, void *dev_id) volatile unsigned char x; timer_handler(irq, dev_id); + timer_heartbeat(); x = *(volatile unsigned char *)(apollo_timer + 3); x = *(volatile unsigned char *)(apollo_timer + 5);
diff --git a/arch/m68k/atari/time.c b/arch/m68k/atari/time.c
index ce923a523695..ce4a5961ca93 100644
--- a/arch/m68k/atari/time.c
+++ b/arch/m68k/atari/time.c@@ -21,6 +21,7 @@ #include <linux/export.h> #include <asm/atariints.h> +#include <asm/machdep.h> DEFINE_SPINLOCK(rtc_lock); EXPORT_SYMBOL_GPL(rtc_lock);
@@ -49,6 +50,7 @@ static irqreturn_t mfp_timer_c_handler(int irq, void *dev_id) } while (last_timer_count == 1); clk_total += INT_TICKS; timer_routine(0, NULL); + timer_heartbeat(); local_irq_restore(flags); return IRQ_HANDLED;
diff --git a/arch/m68k/hp300/time.c b/arch/m68k/hp300/time.c
index bfee13e1d0fe..e3cd938de0f9 100644
--- a/arch/m68k/hp300/time.c
+++ b/arch/m68k/hp300/time.c@@ -65,6 +65,7 @@ static irqreturn_t hp300_tick(int irq, void *dev_id) clk_total += INTVAL; clk_offset = 0; timer_routine(0, NULL); + timer_heartbeat(); local_irq_restore(flags); /* Turn off the network and SCSI leds */
diff --git a/arch/m68k/include/asm/machdep.h b/arch/m68k/include/asm/machdep.h
index 49bd3266b4b1..e62a39d01ae4 100644
--- a/arch/m68k/include/asm/machdep.h
+++ b/arch/m68k/include/asm/machdep.h@@ -35,6 +35,13 @@ extern void (*mach_beep) (unsigned int, unsigned int); /* Hardware clock functions */ extern void hw_timer_init(irq_handler_t handler); extern unsigned long hw_timer_offset(void); +#ifdef CONFIG_HEARTBEAT +extern void timer_heartbeat(void); +#else +static inline void timer_heartbeat(void) +{ +} +#endif extern void config_BSP(char *command, int len);
diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c
index c2697a4d4ddd..c05cec21b05f 100644
--- a/arch/m68k/kernel/time.c
+++ b/arch/m68k/kernel/time.c@@ -45,8 +45,12 @@ static irqreturn_t timer_interrupt(int irq, void *dummy) xtime_update(1); update_process_times(user_mode(get_irq_regs())); profile_tick(CPU_PROFILING); + return IRQ_HANDLED; +} #ifdef CONFIG_HEARTBEAT +void timer_heartbeat(void) +{ /* use power LED as a heartbeat instead -- much more useful for debugging -- based on the version for PReP by Cort */ /* acts like an actual heart beat -- ie thump-thump-pause... */
@@ -68,9 +72,8 @@ static irqreturn_t timer_interrupt(int irq, void *dummy) dist = period / 4; } } -#endif /* CONFIG_HEARTBEAT */ - return IRQ_HANDLED; } +#endif /* CONFIG_HEARTBEAT */ #ifdef CONFIG_M68KCLASSIC #if !IS_BUILTIN(CONFIG_RTC_DRV_GENERIC)
diff --git a/arch/m68k/q40/q40ints.c b/arch/m68k/q40/q40ints.c
index 1c696906c159..b01b545a2db0 100644
--- a/arch/m68k/q40/q40ints.c
+++ b/arch/m68k/q40/q40ints.c@@ -17,6 +17,7 @@ #include <linux/interrupt.h> #include <linux/irq.h> +#include <asm/machdep.h> #include <asm/ptrace.h> #include <asm/traps.h>
@@ -144,6 +145,7 @@ static irqreturn_t q40_timer_int(int irq, void *dev_id) local_irq_save(flags); timer_routine(0, NULL); + timer_heartbeat(); local_irq_restore(flags); } return IRQ_HANDLED;
--
2.27.0
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