diff options
Diffstat (limited to 'include/linux/perf_event.h')
| -rw-r--r-- | include/linux/perf_event.h | 96 |
1 files changed, 78 insertions, 18 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index ee8b9ecdc03b..0031f7b4d9ab 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -36,6 +36,7 @@ struct perf_guest_info_callbacks { }; #ifdef CONFIG_HAVE_HW_BREAKPOINT +#include <linux/rhashtable-types.h> #include <asm/hw_breakpoint.h> #endif @@ -60,6 +61,7 @@ struct perf_guest_info_callbacks { #include <linux/refcount.h> #include <linux/security.h> #include <linux/static_call.h> +#include <linux/lockdep.h> #include <asm/local.h> struct perf_callchain_entry { @@ -137,9 +139,11 @@ struct hw_perf_event_extra { * PERF_EVENT_FLAG_ARCH bits are reserved for architecture-specific * usage. */ -#define PERF_EVENT_FLAG_ARCH 0x0000ffff +#define PERF_EVENT_FLAG_ARCH 0x000fffff #define PERF_EVENT_FLAG_USER_READ_CNT 0x80000000 +static_assert((PERF_EVENT_FLAG_USER_READ_CNT & PERF_EVENT_FLAG_ARCH) == 0); + /** * struct hw_perf_event - performance event hardware details: */ @@ -178,7 +182,7 @@ struct hw_perf_event { * creation and event initalization. */ struct arch_hw_breakpoint info; - struct list_head bp_list; + struct rhlist_head bp_list; }; #endif struct { /* amd_iommu */ @@ -631,7 +635,23 @@ struct pmu_event_list { struct list_head list; }; +/* + * event->sibling_list is modified whole holding both ctx->lock and ctx->mutex + * as such iteration must hold either lock. However, since ctx->lock is an IRQ + * safe lock, and is only held by the CPU doing the modification, having IRQs + * disabled is sufficient since it will hold-off the IPIs. + */ +#ifdef CONFIG_PROVE_LOCKING +#define lockdep_assert_event_ctx(event) \ + WARN_ON_ONCE(__lockdep_enabled && \ + (this_cpu_read(hardirqs_enabled) && \ + lockdep_is_held(&(event)->ctx->mutex) != LOCK_STATE_HELD)) +#else +#define lockdep_assert_event_ctx(event) +#endif + #define for_each_sibling_event(sibling, event) \ + lockdep_assert_event_ctx(event); \ if ((event)->group_leader == (event)) \ list_for_each_entry((sibling), &(event)->sibling_list, sibling_list) @@ -736,11 +756,14 @@ struct perf_event { struct fasync_struct *fasync; /* delayed work for NMIs and such */ - int pending_wakeup; - int pending_kill; - int pending_disable; + unsigned int pending_wakeup; + unsigned int pending_kill; + unsigned int pending_disable; + unsigned int pending_sigtrap; unsigned long pending_addr; /* SIGTRAP */ - struct irq_work pending; + struct irq_work pending_irq; + struct callback_head pending_task; + unsigned int pending_work; atomic_t event_limit; @@ -857,6 +880,14 @@ struct perf_event_context { #endif void *task_ctx_data; /* pmu specific data */ struct rcu_head rcu_head; + + /* + * Sum (event->pending_sigtrap + event->pending_work) + * + * The SIGTRAP is targeted at ctx->task, as such it won't do changing + * that until the signal is delivered. + */ + local_t nr_pending; }; /* @@ -1007,18 +1038,20 @@ struct perf_sample_data { * Fields set by perf_sample_data_init(), group so as to * minimize the cachelines touched. */ - u64 addr; - struct perf_raw_record *raw; - struct perf_branch_stack *br_stack; + u64 sample_flags; u64 period; - union perf_sample_weight weight; - u64 txn; - union perf_mem_data_src data_src; /* * The other fields, optionally {set,used} by * perf_{prepare,output}_sample(). */ + struct perf_branch_stack *br_stack; + union perf_sample_weight weight; + union perf_mem_data_src data_src; + u64 txn; + u64 addr; + struct perf_raw_record *raw; + u64 type; u64 ip; struct { @@ -1056,13 +1089,13 @@ static inline void perf_sample_data_init(struct perf_sample_data *data, u64 addr, u64 period) { /* remaining struct members initialized in perf_prepare_sample() */ - data->addr = addr; - data->raw = NULL; - data->br_stack = NULL; + data->sample_flags = PERF_SAMPLE_PERIOD; data->period = period; - data->weight.full = 0; - data->data_src.val = PERF_MEM_NA; - data->txn = 0; + + if (addr) { + data->addr = addr; + data->sample_flags |= PERF_SAMPLE_ADDR; + } } /* @@ -1078,6 +1111,7 @@ static inline void perf_clear_branch_entry_bitfields(struct perf_branch_entry *b br->abort = 0; br->cycles = 0; br->type = 0; + br->spec = PERF_BR_SPEC_NA; br->reserved = 0; } @@ -1684,4 +1718,30 @@ static inline void perf_lopwr_cb(bool mode) } #endif +#ifdef CONFIG_PERF_EVENTS +static inline bool branch_sample_no_flags(const struct perf_event *event) +{ + return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_NO_FLAGS; +} + +static inline bool branch_sample_no_cycles(const struct perf_event *event) +{ + return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_NO_CYCLES; +} + +static inline bool branch_sample_type(const struct perf_event *event) +{ + return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_TYPE_SAVE; +} + +static inline bool branch_sample_hw_index(const struct perf_event *event) +{ + return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_HW_INDEX; +} + +static inline bool branch_sample_priv(const struct perf_event *event) +{ + return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_PRIV_SAVE; +} +#endif /* CONFIG_PERF_EVENTS */ #endif /* _LINUX_PERF_EVENT_H */ |