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lockdep: Refactor IRQ trace events fields into struct

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Refactor the IRQ trace events fields, used for printing information
about the IRQ trace events, into a separate struct 'irqtrace_events'.

This improves readability by separating the information only used in
reporting, as well as enables (simplified) storing/restoring of
irqtrace_events snapshots.

No functional change intended.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200729110916.3920464-1-elver@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Marco Elver 2020-07-29 13:09:15 +02:00 • committed by Ingo Molnar
parent 859247d39f
commit 0584df9c12
4 changed files with 50 additions and 48 deletions
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13
include/linux/irqflags.h
View file

@ -33,6 +33,19 @@
#ifdef CONFIG_TRACE_IRQFLAGS
/* Per-task IRQ trace events information. */
struct irqtrace_events {
unsigned int irq_events;
unsigned long hardirq_enable_ip;
unsigned long hardirq_disable_ip;
unsigned int hardirq_enable_event;
unsigned int hardirq_disable_event;
unsigned long softirq_disable_ip;
unsigned long softirq_enable_ip;
unsigned int softirq_disable_event;
unsigned int softirq_enable_event;
};
DECLARE_PER_CPU(int, hardirqs_enabled);
DECLARE_PER_CPU(int, hardirq_context);

11
include/linux/sched.h
View file

@ -18,6 +18,7 @@
#include <linux/mutex.h>
#include <linux/plist.h>
#include <linux/hrtimer.h>
#include <linux/irqflags.h>
#include <linux/seccomp.h>
#include <linux/nodemask.h>
#include <linux/rcupdate.h>
@ -980,17 +981,9 @@ struct task_struct {
#endif
#ifdef CONFIG_TRACE_IRQFLAGS
unsigned int irq_events;
struct irqtrace_events irqtrace;
unsigned int hardirq_threaded;
unsigned long hardirq_enable_ip;
unsigned long hardirq_disable_ip;
unsigned int hardirq_enable_event;
unsigned int hardirq_disable_event;
u64 hardirq_chain_key;
unsigned long softirq_disable_ip;
unsigned long softirq_enable_ip;
unsigned int softirq_disable_event;
unsigned int softirq_enable_event;
int softirqs_enabled;
int softirq_context;
int irq_config;