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-rw-r--r--include/linux/compat.h2
-rw-r--r--include/linux/perf_event.h78
-rw-r--r--include/linux/signal.h1
-rw-r--r--include/uapi/asm-generic/siginfo.h6
-rw-r--r--include/uapi/linux/perf_event.h28
-rw-r--r--include/uapi/linux/signalfd.h4
6 files changed, 84 insertions, 35 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 6e65be753603..f0d2dd35d408 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -236,6 +236,8 @@ typedef struct compat_siginfo {
char _dummy_pkey[__COMPAT_ADDR_BND_PKEY_PAD];
u32 _pkey;
} _addr_pkey;
+ /* used when si_code=TRAP_PERF */
+ compat_ulong_t _perf;
};
} _sigfault;
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 3f7f89ea5e51..a763928a0e41 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -260,15 +260,16 @@ struct perf_event;
/**
* pmu::capabilities flags
*/
-#define PERF_PMU_CAP_NO_INTERRUPT 0x01
-#define PERF_PMU_CAP_NO_NMI 0x02
-#define PERF_PMU_CAP_AUX_NO_SG 0x04
-#define PERF_PMU_CAP_EXTENDED_REGS 0x08
-#define PERF_PMU_CAP_EXCLUSIVE 0x10
-#define PERF_PMU_CAP_ITRACE 0x20
-#define PERF_PMU_CAP_HETEROGENEOUS_CPUS 0x40
-#define PERF_PMU_CAP_NO_EXCLUDE 0x80
-#define PERF_PMU_CAP_AUX_OUTPUT 0x100
+#define PERF_PMU_CAP_NO_INTERRUPT 0x0001
+#define PERF_PMU_CAP_NO_NMI 0x0002
+#define PERF_PMU_CAP_AUX_NO_SG 0x0004
+#define PERF_PMU_CAP_EXTENDED_REGS 0x0008
+#define PERF_PMU_CAP_EXCLUSIVE 0x0010
+#define PERF_PMU_CAP_ITRACE 0x0020
+#define PERF_PMU_CAP_HETEROGENEOUS_CPUS 0x0040
+#define PERF_PMU_CAP_NO_EXCLUDE 0x0080
+#define PERF_PMU_CAP_AUX_OUTPUT 0x0100
+#define PERF_PMU_CAP_EXTENDED_HW_TYPE 0x0200
struct perf_output_handle;
@@ -607,6 +608,7 @@ struct swevent_hlist {
#define PERF_ATTACH_TASK_DATA 0x08
#define PERF_ATTACH_ITRACE 0x10
#define PERF_ATTACH_SCHED_CB 0x20
+#define PERF_ATTACH_CHILD 0x40
struct perf_cgroup;
struct perf_buffer;
@@ -734,6 +736,7 @@ struct perf_event {
int pending_wakeup;
int pending_kill;
int pending_disable;
+ unsigned long pending_addr; /* SIGTRAP */
struct irq_work pending;
atomic_t event_limit;
@@ -957,7 +960,7 @@ extern void __perf_event_task_sched_in(struct task_struct *prev,
struct task_struct *task);
extern void __perf_event_task_sched_out(struct task_struct *prev,
struct task_struct *next);
-extern int perf_event_init_task(struct task_struct *child);
+extern int perf_event_init_task(struct task_struct *child, u64 clone_flags);
extern void perf_event_exit_task(struct task_struct *child);
extern void perf_event_free_task(struct task_struct *task);
extern void perf_event_delayed_put(struct task_struct *task);
@@ -1176,30 +1179,24 @@ DECLARE_PER_CPU(struct pt_regs, __perf_regs[4]);
* which is guaranteed by us not actually scheduling inside other swevents
* because those disable preemption.
*/
-static __always_inline void
-perf_sw_event_sched(u32 event_id, u64 nr, u64 addr)
+static __always_inline void __perf_sw_event_sched(u32 event_id, u64 nr, u64 addr)
{
- if (static_key_false(&perf_swevent_enabled[event_id])) {
- struct pt_regs *regs = this_cpu_ptr(&__perf_regs[0]);
+ struct pt_regs *regs = this_cpu_ptr(&__perf_regs[0]);
- perf_fetch_caller_regs(regs);
- ___perf_sw_event(event_id, nr, regs, addr);
- }
+ perf_fetch_caller_regs(regs);
+ ___perf_sw_event(event_id, nr, regs, addr);
}
extern struct static_key_false perf_sched_events;
-static __always_inline bool
-perf_sw_migrate_enabled(void)
+static __always_inline bool __perf_sw_enabled(int swevt)
{
- if (static_key_false(&perf_swevent_enabled[PERF_COUNT_SW_CPU_MIGRATIONS]))
- return true;
- return false;
+ return static_key_false(&perf_swevent_enabled[swevt]);
}
static inline void perf_event_task_migrate(struct task_struct *task)
{
- if (perf_sw_migrate_enabled())
+ if (__perf_sw_enabled(PERF_COUNT_SW_CPU_MIGRATIONS))
task->sched_migrated = 1;
}
@@ -1209,11 +1206,9 @@ static inline void perf_event_task_sched_in(struct task_struct *prev,
if (static_branch_unlikely(&perf_sched_events))
__perf_event_task_sched_in(prev, task);
- if (perf_sw_migrate_enabled() && task->sched_migrated) {
- struct pt_regs *regs = this_cpu_ptr(&__perf_regs[0]);
-
- perf_fetch_caller_regs(regs);
- ___perf_sw_event(PERF_COUNT_SW_CPU_MIGRATIONS, 1, regs, 0);
+ if (__perf_sw_enabled(PERF_COUNT_SW_CPU_MIGRATIONS) &&
+ task->sched_migrated) {
+ __perf_sw_event_sched(PERF_COUNT_SW_CPU_MIGRATIONS, 1, 0);
task->sched_migrated = 0;
}
}
@@ -1221,7 +1216,15 @@ static inline void perf_event_task_sched_in(struct task_struct *prev,
static inline void perf_event_task_sched_out(struct task_struct *prev,
struct task_struct *next)
{
- perf_sw_event_sched(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 0);
+ if (__perf_sw_enabled(PERF_COUNT_SW_CONTEXT_SWITCHES))
+ __perf_sw_event_sched(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 0);
+
+#ifdef CONFIG_CGROUP_PERF
+ if (__perf_sw_enabled(PERF_COUNT_SW_CGROUP_SWITCHES) &&
+ perf_cgroup_from_task(prev, NULL) !=
+ perf_cgroup_from_task(next, NULL))
+ __perf_sw_event_sched(PERF_COUNT_SW_CGROUP_SWITCHES, 1, 0);
+#endif
if (static_branch_unlikely(&perf_sched_events))
__perf_event_task_sched_out(prev, next);
@@ -1448,7 +1451,8 @@ perf_event_task_sched_in(struct task_struct *prev,
static inline void
perf_event_task_sched_out(struct task_struct *prev,
struct task_struct *next) { }
-static inline int perf_event_init_task(struct task_struct *child) { return 0; }
+static inline int perf_event_init_task(struct task_struct *child,
+ u64 clone_flags) { return 0; }
static inline void perf_event_exit_task(struct task_struct *child) { }
static inline void perf_event_free_task(struct task_struct *task) { }
static inline void perf_event_delayed_put(struct task_struct *task) { }
@@ -1477,8 +1481,6 @@ static inline int perf_event_refresh(struct perf_event *event, int refresh)
static inline void
perf_sw_event(u32 event_id, u64 nr, struct pt_regs *regs, u64 addr) { }
static inline void
-perf_sw_event_sched(u32 event_id, u64 nr, u64 addr) { }
-static inline void
perf_bp_event(struct perf_event *event, void *data) { }
static inline int perf_register_guest_info_callbacks
@@ -1548,6 +1550,18 @@ struct perf_pmu_events_ht_attr {
const char *event_str_noht;
};
+struct perf_pmu_events_hybrid_attr {
+ struct device_attribute attr;
+ u64 id;
+ const char *event_str;
+ u64 pmu_type;
+};
+
+struct perf_pmu_format_hybrid_attr {
+ struct device_attribute attr;
+ u64 pmu_type;
+};
+
ssize_t perf_event_sysfs_show(struct device *dev, struct device_attribute *attr,
char *page);
diff --git a/include/linux/signal.h b/include/linux/signal.h
index 205526c4003a..1e98548d7cf6 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -43,6 +43,7 @@ enum siginfo_layout {
SIL_FAULT_MCEERR,
SIL_FAULT_BNDERR,
SIL_FAULT_PKUERR,
+ SIL_PERF_EVENT,
SIL_CHLD,
SIL_RT,
SIL_SYS,
diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h
index d2597000407a..03d6f6d2c1fe 100644
--- a/include/uapi/asm-generic/siginfo.h
+++ b/include/uapi/asm-generic/siginfo.h
@@ -91,6 +91,8 @@ union __sifields {
char _dummy_pkey[__ADDR_BND_PKEY_PAD];
__u32 _pkey;
} _addr_pkey;
+ /* used when si_code=TRAP_PERF */
+ unsigned long _perf;
};
} _sigfault;
@@ -155,6 +157,7 @@ typedef struct siginfo {
#define si_lower _sifields._sigfault._addr_bnd._lower
#define si_upper _sifields._sigfault._addr_bnd._upper
#define si_pkey _sifields._sigfault._addr_pkey._pkey
+#define si_perf _sifields._sigfault._perf
#define si_band _sifields._sigpoll._band
#define si_fd _sifields._sigpoll._fd
#define si_call_addr _sifields._sigsys._call_addr
@@ -253,7 +256,8 @@ typedef struct siginfo {
#define TRAP_BRANCH 3 /* process taken branch trap */
#define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */
#define TRAP_UNK 5 /* undiagnosed trap */
-#define NSIGTRAP 5
+#define TRAP_PERF 6 /* perf event with sigtrap=1 */
+#define NSIGTRAP 6
/*
* There is an additional set of SIGTRAP si_codes used by ptrace
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index ad15e40d7f5d..e54e639248c8 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -38,6 +38,21 @@ enum perf_type_id {
};
/*
+ * attr.config layout for type PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE
+ * PERF_TYPE_HARDWARE: 0xEEEEEEEE000000AA
+ * AA: hardware event ID
+ * EEEEEEEE: PMU type ID
+ * PERF_TYPE_HW_CACHE: 0xEEEEEEEE00DDCCBB
+ * BB: hardware cache ID
+ * CC: hardware cache op ID
+ * DD: hardware cache op result ID
+ * EEEEEEEE: PMU type ID
+ * If the PMU type ID is 0, the PERF_TYPE_RAW will be applied.
+ */
+#define PERF_PMU_TYPE_SHIFT 32
+#define PERF_HW_EVENT_MASK 0xffffffff
+
+/*
* Generalized performance event event_id types, used by the
* attr.event_id parameter of the sys_perf_event_open()
* syscall:
@@ -112,6 +127,7 @@ enum perf_sw_ids {
PERF_COUNT_SW_EMULATION_FAULTS = 8,
PERF_COUNT_SW_DUMMY = 9,
PERF_COUNT_SW_BPF_OUTPUT = 10,
+ PERF_COUNT_SW_CGROUP_SWITCHES = 11,
PERF_COUNT_SW_MAX, /* non-ABI */
};
@@ -311,6 +327,7 @@ enum perf_event_read_format {
#define PERF_ATTR_SIZE_VER4 104 /* add: sample_regs_intr */
#define PERF_ATTR_SIZE_VER5 112 /* add: aux_watermark */
#define PERF_ATTR_SIZE_VER6 120 /* add: aux_sample_size */
+#define PERF_ATTR_SIZE_VER7 128 /* add: sig_data */
/*
* Hardware event_id to monitor via a performance monitoring event:
@@ -389,7 +406,10 @@ struct perf_event_attr {
cgroup : 1, /* include cgroup events */
text_poke : 1, /* include text poke events */
build_id : 1, /* use build id in mmap2 events */
- __reserved_1 : 29;
+ inherit_thread : 1, /* children only inherit if cloned with CLONE_THREAD */
+ remove_on_exec : 1, /* event is removed from task on exec */
+ sigtrap : 1, /* send synchronous SIGTRAP on event */
+ __reserved_1 : 26;
union {
__u32 wakeup_events; /* wakeup every n events */
@@ -441,6 +461,12 @@ struct perf_event_attr {
__u16 __reserved_2;
__u32 aux_sample_size;
__u32 __reserved_3;
+
+ /*
+ * User provided data if sigtrap=1, passed back to user via
+ * siginfo_t::si_perf, e.g. to permit user to identify the event.
+ */
+ __u64 sig_data;
};
/*
diff --git a/include/uapi/linux/signalfd.h b/include/uapi/linux/signalfd.h
index 83429a05b698..7e333042c7e3 100644
--- a/include/uapi/linux/signalfd.h
+++ b/include/uapi/linux/signalfd.h
@@ -39,6 +39,8 @@ struct signalfd_siginfo {
__s32 ssi_syscall;
__u64 ssi_call_addr;
__u32 ssi_arch;
+ __u32 __pad3;
+ __u64 ssi_perf;
/*
* Pad strcture to 128 bytes. Remember to update the
@@ -49,7 +51,7 @@ struct signalfd_siginfo {
* comes out of a read(2) and we really don't want to have
* a compat on read(2).
*/
- __u8 __pad[28];
+ __u8 __pad[16];
};
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-17 19:16:16 +0300