diff options
| author | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-05-21 11:39:07 +0000 |
|---|---|---|
| committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-05-21 11:39:07 +0000 |
| commit | 4a0fb71e67df4774d79eb788f0d1bd7a78801e6d (patch) | |
| tree | dac8c1a727022f6da97565e7a0a4d7aa2b9624c5 /hw/i8259.c | |
| parent | 274da6b24b93e98119de92f22fff24f79ba173ba (diff) | |
irq statistics code (initial patch by Jocelyn Mayer)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@840 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw/i8259.c')
| -rw-r--r-- | hw/i8259.c | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/hw/i8259.c b/hw/i8259.c index 7532d5c672..62e11f0efe 100644 --- a/hw/i8259.c +++ b/hw/i8259.c @@ -27,6 +27,7 @@ //#define DEBUG_PIC //#define DEBUG_IRQ_LATENCY +//#define DEBUG_IRQ_COUNT typedef struct PicState { uint8_t last_irr; /* edge detection */ @@ -50,6 +51,13 @@ typedef struct PicState { /* 0 is master pic, 1 is slave pic */ static PicState pics[2]; +#if defined(DEBUG_PIC) || defined (DEBUG_IRQ_COUNT) +static int irq_level[16]; +#endif +#ifdef DEBUG_IRQ_COUNT +static uint64_t irq_count[16]; +#endif + /* set irq level. If an edge is detected, then the IRR is set to 1 */ static inline void pic_set_irq1(PicState *s, int irq, int level) { @@ -147,16 +155,19 @@ static void pic_update_irq(void) #ifdef DEBUG_IRQ_LATENCY int64_t irq_time[16]; #endif -#if defined(DEBUG_PIC) -int irq_level[16]; -#endif void pic_set_irq(int irq, int level) { -#if defined(DEBUG_PIC) +#if defined(DEBUG_PIC) || defined(DEBUG_IRQ_COUNT) if (level != irq_level[irq]) { +#if defined(DEBUG_PIC) printf("pic_set_irq: irq=%d level=%d\n", irq, level); +#endif irq_level[irq] = level; +#ifdef DEBUG_IRQ_COUNT + if (level == 1) + irq_count[irq]++; +#endif } #endif #ifdef DEBUG_IRQ_LATENCY @@ -463,6 +474,22 @@ void pic_info(void) } } +void irq_info(void) +{ +#ifndef DEBUG_IRQ_COUNT + term_printf("irq statistic code not compiled.\n"); +#else + int i; + int64_t count; + + term_printf("IRQ statistics:\n"); + for (i = 0; i < 16; i++) { + count = irq_count[i]; + if (count > 0) + term_printf("%2d: %lld\n", i, count); + } +#endif +} void pic_init(void) { |