diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/parisc/kernel/smp.c | 15 | ||||
-rw-r--r-- | arch/parisc/kernel/time.c | 24 |
2 files changed, 12 insertions, 27 deletions
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c index faad338f310e..4a23a97b06cd 100644 --- a/arch/parisc/kernel/smp.c +++ b/arch/parisc/kernel/smp.c | |||
@@ -154,7 +154,7 @@ halt_processor(void) | |||
154 | 154 | ||
155 | 155 | ||
156 | irqreturn_t | 156 | irqreturn_t |
157 | ipi_interrupt(int irq, void *dev_id, struct pt_regs *regs) | 157 | ipi_interrupt(int irq, void *dev_id) |
158 | { | 158 | { |
159 | int this_cpu = smp_processor_id(); | 159 | int this_cpu = smp_processor_id(); |
160 | struct cpuinfo_parisc *p = &cpu_data[this_cpu]; | 160 | struct cpuinfo_parisc *p = &cpu_data[this_cpu]; |
@@ -414,19 +414,6 @@ smp_flush_tlb_all(void) | |||
414 | on_each_cpu(flush_tlb_all_local, NULL, 1, 1); | 414 | on_each_cpu(flush_tlb_all_local, NULL, 1, 1); |
415 | } | 415 | } |
416 | 416 | ||
417 | |||
418 | void | ||
419 | smp_do_timer(struct pt_regs *regs) | ||
420 | { | ||
421 | int cpu = smp_processor_id(); | ||
422 | struct cpuinfo_parisc *data = &cpu_data[cpu]; | ||
423 | |||
424 | if (!--data->prof_counter) { | ||
425 | data->prof_counter = data->prof_multiplier; | ||
426 | update_process_times(user_mode(regs)); | ||
427 | } | ||
428 | } | ||
429 | |||
430 | /* | 417 | /* |
431 | * Called by secondaries to update state and initialize CPU registers. | 418 | * Called by secondaries to update state and initialize CPU registers. |
432 | */ | 419 | */ |
diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c index 8c9b8a7ef244..bad7d1eb62b9 100644 --- a/arch/parisc/kernel/time.c +++ b/arch/parisc/kernel/time.c | |||
@@ -34,10 +34,6 @@ | |||
34 | 34 | ||
35 | static unsigned long clocktick __read_mostly; /* timer cycles per tick */ | 35 | static unsigned long clocktick __read_mostly; /* timer cycles per tick */ |
36 | 36 | ||
37 | #ifdef CONFIG_SMP | ||
38 | extern void smp_do_timer(struct pt_regs *regs); | ||
39 | #endif | ||
40 | |||
41 | /* | 37 | /* |
42 | * We keep time on PA-RISC Linux by using the Interval Timer which is | 38 | * We keep time on PA-RISC Linux by using the Interval Timer which is |
43 | * a pair of registers; one is read-only and one is write-only; both | 39 | * a pair of registers; one is read-only and one is write-only; both |
@@ -55,13 +51,14 @@ extern void smp_do_timer(struct pt_regs *regs); | |||
55 | * held off for an arbitrarily long period of time by interrupts being | 51 | * held off for an arbitrarily long period of time by interrupts being |
56 | * disabled, so we may miss one or more ticks. | 52 | * disabled, so we may miss one or more ticks. |
57 | */ | 53 | */ |
58 | irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) | 54 | irqreturn_t timer_interrupt(int irq, void *dev_id) |
59 | { | 55 | { |
60 | unsigned long now; | 56 | unsigned long now; |
61 | unsigned long next_tick; | 57 | unsigned long next_tick; |
62 | unsigned long cycles_elapsed, ticks_elapsed; | 58 | unsigned long cycles_elapsed, ticks_elapsed; |
63 | unsigned long cycles_remainder; | 59 | unsigned long cycles_remainder; |
64 | unsigned int cpu = smp_processor_id(); | 60 | unsigned int cpu = smp_processor_id(); |
61 | struct cpuinfo_parisc *cpuinfo = &cpu_data[cpu]; | ||
65 | 62 | ||
66 | /* gcc can optimize for "read-only" case with a local clocktick */ | 63 | /* gcc can optimize for "read-only" case with a local clocktick */ |
67 | unsigned long cpt = clocktick; | 64 | unsigned long cpt = clocktick; |
@@ -69,7 +66,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |||
69 | profile_tick(CPU_PROFILING); | 66 | profile_tick(CPU_PROFILING); |
70 | 67 | ||
71 | /* Initialize next_tick to the expected tick time. */ | 68 | /* Initialize next_tick to the expected tick time. */ |
72 | next_tick = cpu_data[cpu].it_value; | 69 | next_tick = cpuinfo->it_value; |
73 | 70 | ||
74 | /* Get current interval timer. | 71 | /* Get current interval timer. |
75 | * CR16 reads as 64 bits in CPU wide mode. | 72 | * CR16 reads as 64 bits in CPU wide mode. |
@@ -120,7 +117,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |||
120 | */ | 117 | */ |
121 | next_tick = now + cycles_remainder; | 118 | next_tick = now + cycles_remainder; |
122 | 119 | ||
123 | cpu_data[cpu].it_value = next_tick; | 120 | cpuinfo->it_value = next_tick; |
124 | 121 | ||
125 | /* Skip one clocktick on purpose if we are likely to miss next_tick. | 122 | /* Skip one clocktick on purpose if we are likely to miss next_tick. |
126 | * We want to avoid the new next_tick being less than CR16. | 123 | * We want to avoid the new next_tick being less than CR16. |
@@ -131,18 +128,19 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |||
131 | next_tick += cpt; | 128 | next_tick += cpt; |
132 | 129 | ||
133 | /* Program the IT when to deliver the next interrupt. */ | 130 | /* Program the IT when to deliver the next interrupt. */ |
134 | /* Only bottom 32-bits of next_tick are written to cr16. */ | 131 | /* Only bottom 32-bits of next_tick are written to cr16. */ |
135 | mtctl(next_tick, 16); | 132 | mtctl(next_tick, 16); |
136 | 133 | ||
137 | 134 | ||
138 | /* Done mucking with unreliable delivery of interrupts. | 135 | /* Done mucking with unreliable delivery of interrupts. |
139 | * Go do system house keeping. | 136 | * Go do system house keeping. |
140 | */ | 137 | */ |
141 | #ifdef CONFIG_SMP | 138 | |
142 | smp_do_timer(regs); | 139 | if (!--cpuinfo->prof_counter) { |
143 | #else | 140 | cpuinfo->prof_counter = cpuinfo->prof_multiplier; |
144 | update_process_times(user_mode(regs)); | 141 | update_process_times(user_mode(get_irq_regs())); |
145 | #endif | 142 | } |
143 | |||
146 | if (cpu == 0) { | 144 | if (cpu == 0) { |
147 | write_seqlock(&xtime_lock); | 145 | write_seqlock(&xtime_lock); |
148 | do_timer(ticks_elapsed); | 146 | do_timer(ticks_elapsed); |