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Merge "trace: increase caller depth for preempt/irqs disable events"

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This commit is contained in:
qctecmdr 2020-06-23 05:16:32 -07:00 • committed by Gerrit - the friendly Code Review server
commit b318939c3f
2 changed files with 34 additions and 23 deletions
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29
include/trace/events/preemptirq.h
View file

@ -65,9 +65,10 @@ DEFINE_EVENT(preemptirq_template, preempt_enable,
TRACE_EVENT(irqs_disable,
TP_PROTO(u64 delta, unsigned long caddr0, unsigned long caddr1,
unsigned long caddr2, unsigned long caddr3),
unsigned long caddr2, unsigned long caddr3,
unsigned long caddr4),
TP_ARGS(delta, caddr0, caddr1, caddr2, caddr3),
TP_ARGS(delta, caddr0, caddr1, caddr2, caddr3, caddr4),
TP_STRUCT__entry(
__field(u64, delta)
@ -75,6 +76,7 @@ TRACE_EVENT(irqs_disable,
__field(void*, caddr1)
__field(void*, caddr2)
__field(void*, caddr3)
__field(void*, caddr4)
),
TP_fast_assign(
@ -83,20 +85,22 @@ TRACE_EVENT(irqs_disable,
__entry->caddr1 = (void *)caddr1;
__entry->caddr2 = (void *)caddr2;
__entry->caddr3 = (void *)caddr3;
__entry->caddr4 = (void *)caddr4;
),
TP_printk("delta=%llu(ns) Callers:(%ps<-%ps<-%ps<-%ps)", __entry->delta,
__entry->caddr0, __entry->caddr1,
__entry->caddr2, __entry->caddr3)
TP_printk("delta=%llu(ns) Callers:(%ps<-%ps<-%ps<-%ps<-%ps)",
__entry->delta, __entry->caddr0,
__entry->caddr1, __entry->caddr2,
__entry->caddr3, __entry->caddr4)
);
TRACE_EVENT(sched_preempt_disable,
TP_PROTO(u64 delta, bool irqs_disabled,
unsigned long caddr0, unsigned long caddr1,
unsigned long caddr2, unsigned long caddr3),
TP_PROTO(u64 delta, bool irqs_disabled, unsigned long caddr0,
unsigned long caddr1, unsigned long caddr2,
unsigned long caddr3, unsigned long caddr4),
TP_ARGS(delta, irqs_disabled, caddr0, caddr1, caddr2, caddr3),
TP_ARGS(delta, irqs_disabled, caddr0, caddr1, caddr2, caddr3, caddr4),
TP_STRUCT__entry(
__field(u64, delta)
@ -105,6 +109,7 @@ TRACE_EVENT(sched_preempt_disable,
__field(void*, caddr1)
__field(void*, caddr2)
__field(void*, caddr3)
__field(void*, caddr4)
),
TP_fast_assign(
@ -114,12 +119,14 @@ TRACE_EVENT(sched_preempt_disable,
__entry->caddr1 = (void *)caddr1;
__entry->caddr2 = (void *)caddr2;
__entry->caddr3 = (void *)caddr3;
__entry->caddr4 = (void *)caddr4;
),
TP_printk("delta=%llu(ns) irqs_d=%d Callers:(%ps<-%ps<-%ps<-%ps)",
TP_printk("delta=%llu(ns) irqs_d=%d Callers:(%ps<-%ps<-%ps<-%ps<-%ps)",
__entry->delta, __entry->irqs_disabled,
__entry->caddr0, __entry->caddr1,
__entry->caddr2, __entry->caddr3)
__entry->caddr2, __entry->caddr3,
__entry->caddr4)
);
#endif /* _TRACE_PREEMPTIRQ_H */

28
kernel/trace/trace_irqsoff.c
View file

@ -629,7 +629,7 @@ unsigned int sysctl_irqsoff_crash_threshold_ns = 10000000UL;
struct irqsoff_store {
u64 ts;
unsigned long caddr[4];
unsigned long caddr[5];
};
static DEFINE_PER_CPU(struct irqsoff_store, the_irqsoff);
@ -652,7 +652,8 @@ void tracer_hardirqs_on(unsigned long a0, unsigned long a1)
if (!is_idle_task(current) &&
delta > sysctl_irqsoff_tracing_threshold_ns) {
trace_irqs_disable(delta, is->caddr[0], is->caddr[1],
is->caddr[2], is->caddr[3]);
is->caddr[2], is->caddr[3],
is->caddr[4]);
if (sysctl_irqsoff_dmesg_output_enabled == IRQSOFF_SENTINEL)
printk_deferred(KERN_ERR "D=%llu C:(%ps<-%ps<-%ps<-%ps)\n",
delta, is->caddr[0], is->caddr[1],
@ -666,6 +667,7 @@ void tracer_hardirqs_on(unsigned long a0, unsigned long a1)
BUG_ON(1);
}
}
is->ts = 0;
lockdep_on();
#endif /* CONFIG_PREEMPTIRQ_EVENTS */
@ -684,10 +686,11 @@ void tracer_hardirqs_off(unsigned long a0, unsigned long a1)
lockdep_off();
is = &per_cpu(the_irqsoff, raw_smp_processor_id());
is->ts = sched_clock();
is->caddr[0] = CALLER_ADDR0;
is->caddr[1] = CALLER_ADDR1;
is->caddr[2] = CALLER_ADDR2;
is->caddr[3] = CALLER_ADDR3;
is->caddr[0] = CALLER_ADDR1;
is->caddr[1] = CALLER_ADDR2;
is->caddr[2] = CALLER_ADDR3;
is->caddr[3] = CALLER_ADDR4;
is->caddr[4] = CALLER_ADDR5;
lockdep_on();
#endif /* CONFIG_PREEMPTIRQ_EVENTS */
@ -739,7 +742,7 @@ unsigned int sysctl_preemptoff_tracing_threshold_ns = 1000000UL;
struct preempt_store {
u64 ts;
unsigned long caddr[4];
unsigned long caddr[5];
bool irqs_disabled;
int pid;
unsigned long ncsw;
@ -777,7 +780,7 @@ void tracer_preempt_on(unsigned long a0, unsigned long a1)
if (delta > sysctl_preemptoff_tracing_threshold_ns)
trace_sched_preempt_disable(delta, ps->irqs_disabled,
ps->caddr[0], ps->caddr[1],
ps->caddr[2], ps->caddr[3]);
ps->caddr[2], ps->caddr[3], ps->caddr[4]);
ps->ts = 0;
lockdep_on();
#endif /* CONFIG_PREEMPTIRQ_EVENTS */
@ -795,10 +798,11 @@ void tracer_preempt_off(unsigned long a0, unsigned long a1)
lockdep_off();
ps = &per_cpu(the_ps, raw_smp_processor_id());
ps->ts = sched_clock();
ps->caddr[0] = CALLER_ADDR0;
ps->caddr[1] = CALLER_ADDR1;
ps->caddr[2] = CALLER_ADDR2;
ps->caddr[3] = CALLER_ADDR3;
ps->caddr[0] = CALLER_ADDR1;
ps->caddr[1] = CALLER_ADDR2;
ps->caddr[2] = CALLER_ADDR3;
ps->caddr[3] = CALLER_ADDR4;
ps->caddr[4] = CALLER_ADDR5;
ps->irqs_disabled = irqs_disabled();
ps->pid = current->pid;
ps->ncsw = current->nvcsw + current->nivcsw;