Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 111 insertions, 0 deletions

diff --git a/arch/ia64/include/asm/perfmon.h b/arch/ia64/include/asm/perfmon.h
new file mode 100644
index 000000000..e0545869c
--- /dev/null
+++ b/arch/ia64/include/asm/perfmon.h
@@ -0,0 +1,111 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2001-2003 Hewlett-Packard Co
+ *               Stephane Eranian <eranian@hpl.hp.com>
+ */
+#ifndef _ASM_IA64_PERFMON_H
+#define _ASM_IA64_PERFMON_H
+
+#include <uapi/asm/perfmon.h>
+
+
+extern long perfmonctl(int fd, int cmd, void *arg, int narg);
+
+typedef struct {
+	void (*handler)(int irq, void *arg, struct pt_regs *regs);
+} pfm_intr_handler_desc_t;
+
+extern void pfm_save_regs (struct task_struct *);
+extern void pfm_load_regs (struct task_struct *);
+
+extern void pfm_exit_thread(struct task_struct *);
+extern int  pfm_use_debug_registers(struct task_struct *);
+extern int  pfm_release_debug_registers(struct task_struct *);
+extern void pfm_syst_wide_update_task(struct task_struct *, unsigned long info, int is_ctxswin);
+extern void pfm_inherit(struct task_struct *task, struct pt_regs *regs);
+extern void pfm_init_percpu(void);
+extern void pfm_handle_work(void);
+extern int  pfm_install_alt_pmu_interrupt(pfm_intr_handler_desc_t *h);
+extern int  pfm_remove_alt_pmu_interrupt(pfm_intr_handler_desc_t *h);
+
+
+
+/*
+ * Reset PMD register flags
+ */
+#define PFM_PMD_SHORT_RESET	0
+#define PFM_PMD_LONG_RESET	1
+
+typedef union {
+	unsigned int val;
+	struct {
+		unsigned int notify_user:1;	/* notify user program of overflow */
+		unsigned int reset_ovfl_pmds:1;	/* reset overflowed PMDs */
+		unsigned int block_task:1;	/* block monitored task on kernel exit */
+		unsigned int mask_monitoring:1; /* mask monitors via PMCx.plm */
+		unsigned int reserved:28;	/* for future use */
+	} bits;
+} pfm_ovfl_ctrl_t;
+
+typedef struct {
+	unsigned char	ovfl_pmd;			/* index of overflowed PMD  */
+	unsigned char   ovfl_notify;			/* =1 if monitor requested overflow notification */
+	unsigned short  active_set;			/* event set active at the time of the overflow */
+	pfm_ovfl_ctrl_t ovfl_ctrl;			/* return: perfmon controls to set by handler */
+
+	unsigned long   pmd_last_reset;			/* last reset value of of the PMD */
+	unsigned long	smpl_pmds[4];			/* bitmask of other PMD of interest on overflow */
+	unsigned long   smpl_pmds_values[PMU_MAX_PMDS]; /* values for the other PMDs of interest */
+	unsigned long   pmd_value;			/* current 64-bit value of the PMD */
+	unsigned long	pmd_eventid;			/* eventid associated with PMD */
+} pfm_ovfl_arg_t;
+
+
+typedef struct {
+	char		*fmt_name;
+	pfm_uuid_t	fmt_uuid;
+	size_t		fmt_arg_size;
+	unsigned long	fmt_flags;
+
+	int		(*fmt_validate)(struct task_struct *task, unsigned int flags, int cpu, void *arg);
+	int		(*fmt_getsize)(struct task_struct *task, unsigned int flags, int cpu, void *arg, unsigned long *size);
+	int 		(*fmt_init)(struct task_struct *task, void *buf, unsigned int flags, int cpu, void *arg);
+	int		(*fmt_handler)(struct task_struct *task, void *buf, pfm_ovfl_arg_t *arg, struct pt_regs *regs, unsigned long stamp);
+	int		(*fmt_restart)(struct task_struct *task, pfm_ovfl_ctrl_t *ctrl, void *buf, struct pt_regs *regs);
+	int		(*fmt_restart_active)(struct task_struct *task, pfm_ovfl_ctrl_t *ctrl, void *buf, struct pt_regs *regs);
+	int		(*fmt_exit)(struct task_struct *task, void *buf, struct pt_regs *regs);
+
+	struct list_head fmt_list;
+} pfm_buffer_fmt_t;
+
+extern int pfm_register_buffer_fmt(pfm_buffer_fmt_t *fmt);
+extern int pfm_unregister_buffer_fmt(pfm_uuid_t uuid);
+
+/*
+ * perfmon interface exported to modules
+ */
+extern int pfm_mod_read_pmds(struct task_struct *, void *req, unsigned int nreq, struct pt_regs *regs);
+extern int pfm_mod_write_pmcs(struct task_struct *, void *req, unsigned int nreq, struct pt_regs *regs);
+extern int pfm_mod_write_ibrs(struct task_struct *task, void *req, unsigned int nreq, struct pt_regs *regs);
+extern int pfm_mod_write_dbrs(struct task_struct *task, void *req, unsigned int nreq, struct pt_regs *regs);
+
+/*
+ * describe the content of the local_cpu_date->pfm_syst_info field
+ */
+#define PFM_CPUINFO_SYST_WIDE	0x1	/* if set a system wide session exists */
+#define PFM_CPUINFO_DCR_PP	0x2	/* if set the system wide session has started */
+#define PFM_CPUINFO_EXCL_IDLE	0x4	/* the system wide session excludes the idle task */
+
+/*
+ * sysctl control structure. visible to sampling formats
+ */
+typedef struct {
+	int	debug;		/* turn on/off debugging via syslog */
+	int	debug_ovfl;	/* turn on/off debug printk in overflow handler */
+	int	fastctxsw;	/* turn on/off fast (unsecure) ctxsw */
+	int	expert_mode;	/* turn on/off value checking */
+} pfm_sysctl_t;
+extern pfm_sysctl_t pfm_sysctl;
+
+
+#endif /* _ASM_IA64_PERFMON_H */