Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 259 insertions, 0 deletions

diff --git a/include/asm-ia64/perfmon.h b/include/asm-ia64/perfmon.h
new file mode 100644
index 000000000000..136c60e6bfcc
--- /dev/null
+++ b/include/asm-ia64/perfmon.h
@@ -0,0 +1,259 @@
+/*
+ * Copyright (C) 2001-2003 Hewlett-Packard Co
+ *               Stephane Eranian <eranian@hpl.hp.com>
+ */
+
+#ifndef _ASM_IA64_PERFMON_H
+#define _ASM_IA64_PERFMON_H
+
+/*
+ * perfmon comamnds supported on all CPU models
+ */
+#define PFM_WRITE_PMCS          0x01
+#define PFM_WRITE_PMDS          0x02
+#define PFM_READ_PMDS           0x03
+#define PFM_STOP                0x04
+#define PFM_START               0x05
+#define PFM_ENABLE              0x06 /* obsolete */
+#define PFM_DISABLE             0x07 /* obsolete */
+#define PFM_CREATE_CONTEXT      0x08
+#define PFM_DESTROY_CONTEXT     0x09 /* obsolete use close() */
+#define PFM_RESTART             0x0a
+#define PFM_PROTECT_CONTEXT     0x0b /* obsolete */
+#define PFM_GET_FEATURES        0x0c
+#define PFM_DEBUG               0x0d
+#define PFM_UNPROTECT_CONTEXT   0x0e /* obsolete */
+#define PFM_GET_PMC_RESET_VAL   0x0f
+#define PFM_LOAD_CONTEXT        0x10
+#define PFM_UNLOAD_CONTEXT      0x11
+
+/*
+ * PMU model specific commands (may not be supported on all PMU models)
+ */
+#define PFM_WRITE_IBRS          0x20
+#define PFM_WRITE_DBRS          0x21
+
+/*
+ * context flags
+ */
+#define PFM_FL_NOTIFY_BLOCK      0x01   /* block task on user level notifications */
+#define PFM_FL_SYSTEM_WIDE       0x02   /* create a system wide context */
+#define PFM_FL_OVFL_NO_MSG       0x80   /* do not post overflow/end messages for notification */
+
+/*
+ * event set flags
+ */
+#define PFM_SETFL_EXCL_IDLE      0x01   /* exclude idle task (syswide only) XXX: DO NOT USE YET */
+
+/*
+ * PMC flags
+ */
+#define PFM_REGFL_OVFL_NOTIFY   0x1     /* send notification on overflow */
+#define PFM_REGFL_RANDOM        0x2     /* randomize sampling interval   */
+
+/*
+ * PMD/PMC/IBR/DBR return flags (ignored on input)
+ *
+ * Those flags are used on output and must be checked in case EAGAIN is returned
+ * by any of the calls using a pfarg_reg_t or pfarg_dbreg_t structure.
+ */
+#define PFM_REG_RETFL_NOTAVAIL  (1UL<<31) /* set if register is implemented but not available */
+#define PFM_REG_RETFL_EINVAL    (1UL<<30) /* set if register entry is invalid */
+#define PFM_REG_RETFL_MASK      (PFM_REG_RETFL_NOTAVAIL|PFM_REG_RETFL_EINVAL)
+
+#define PFM_REG_HAS_ERROR(flag) (((flag) & PFM_REG_RETFL_MASK) != 0)
+
+typedef unsigned char pfm_uuid_t[16];   /* custom sampling buffer identifier type */
+
+/*
+ * Request structure used to define a context
+ */
+typedef struct {
+        pfm_uuid_t     ctx_smpl_buf_id;  /* which buffer format to use (if needed) */
+        unsigned long  ctx_flags;        /* noblock/block */
+        unsigned short ctx_nextra_sets;  /* number of extra event sets (you always get 1) */
+        unsigned short ctx_reserved1;    /* for future use */
+        int            ctx_fd;           /* return arg: unique identification for context */
+        void           *ctx_smpl_vaddr;  /* return arg: virtual address of sampling buffer, is used */
+        unsigned long  ctx_reserved2[11];/* for future use */
+} pfarg_context_t;
+
+/*
+ * Request structure used to write/read a PMC or PMD
+ */
+typedef struct {
+        unsigned int    reg_num;           /* which register */
+        unsigned short  reg_set;           /* event set for this register */
+        unsigned short  reg_reserved1;     /* for future use */
+
+        unsigned long   reg_value;         /* initial pmc/pmd value */
+        unsigned long   reg_flags;         /* input: pmc/pmd flags, return: reg error */
+
+        unsigned long   reg_long_reset;    /* reset after buffer overflow notification */
+        unsigned long   reg_short_reset;   /* reset after counter overflow */
+
+        unsigned long   reg_reset_pmds[4]; /* which other counters to reset on overflow */
+        unsigned long   reg_random_seed;   /* seed value when randomization is used */
+        unsigned long   reg_random_mask;   /* bitmask used to limit random value */
+        unsigned long   reg_last_reset_val;/* return: PMD last reset value */
+
+        unsigned long   reg_smpl_pmds[4];  /* which pmds are accessed when PMC overflows */
+        unsigned long   reg_smpl_eventid;  /* opaque sampling event identifier */
+
+        unsigned long   reg_reserved2[3];   /* for future use */
+} pfarg_reg_t;
+
+typedef struct {
+        unsigned int    dbreg_num;              /* which debug register */
+        unsigned short  dbreg_set;              /* event set for this register */
+        unsigned short  dbreg_reserved1;        /* for future use */
+        unsigned long   dbreg_value;            /* value for debug register */
+        unsigned long   dbreg_flags;            /* return: dbreg error */
+        unsigned long   dbreg_reserved2[1];     /* for future use */
+} pfarg_dbreg_t;
+
+typedef struct {
+        unsigned int    ft_version;     /* perfmon: major [16-31], minor [0-15] */
+        unsigned int    ft_reserved;    /* reserved for future use */
+        unsigned long   reserved[4];    /* for future use */
+} pfarg_features_t;
+
+typedef struct {
+        pid_t           load_pid;          /* process to load the context into */
+        unsigned short  load_set;          /* first event set to load */
+        unsigned short  load_reserved1;    /* for future use */
+        unsigned long   load_reserved2[3]; /* for future use */
+} pfarg_load_t;
+
+typedef struct {
+        int             msg_type;               /* generic message header */
+        int             msg_ctx_fd;             /* generic message header */
+        unsigned long   msg_ovfl_pmds[4];       /* which PMDs overflowed */
+        unsigned short  msg_active_set;         /* active set at the time of overflow */
+        unsigned short  msg_reserved1;          /* for future use */
+        unsigned int    msg_reserved2;          /* for future use */
+        unsigned long   msg_tstamp;             /* for perf tuning/debug */
+} pfm_ovfl_msg_t;
+
+typedef struct {
+        int             msg_type;               /* generic message header */
+        int             msg_ctx_fd;             /* generic message header */
+        unsigned long   msg_tstamp;             /* for perf tuning */
+} pfm_end_msg_t;
+
+typedef struct {
+        int             msg_type;               /* type of the message */
+        int             msg_ctx_fd;             /* unique identifier for the context */
+        unsigned long   msg_tstamp;             /* for perf tuning */
+} pfm_gen_msg_t;
+
+#define PFM_MSG_OVFL    1       /* an overflow happened */
+#define PFM_MSG_END     2       /* task to which context was attached ended */
+
+typedef union {
+        pfm_ovfl_msg_t  pfm_ovfl_msg;
+        pfm_end_msg_t   pfm_end_msg;
+        pfm_gen_msg_t   pfm_gen_msg;
+} pfm_msg_t;
+
+/*
+ * Define the version numbers for both perfmon as a whole and the sampling buffer format.
+ */
+#define PFM_VERSION_MAJ          2U
+#define PFM_VERSION_MIN          0U
+#define PFM_VERSION              (((PFM_VERSION_MAJ&0xffff)<<16)|(PFM_VERSION_MIN & 0xffff))
+#define PFM_VERSION_MAJOR(x)     (((x)>>16) & 0xffff)
+#define PFM_VERSION_MINOR(x)     ((x) & 0xffff)
+
+
+/*
+ * miscellaneous architected definitions
+ */
+#define PMU_FIRST_COUNTER       4       /* first counting monitor (PMC/PMD) */
+#define PMU_MAX_PMCS            256     /* maximum architected number of PMC registers */
+#define PMU_MAX_PMDS            256     /* maximum architected number of PMD registers */
+
+#ifdef __KERNEL__
+
+extern long perfmonctl(int fd, int cmd, void *arg, int narg);
+
+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);
+
+/*
+ * 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 */
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_IA64_PERFMON_H */