pfmlib_os_linux_v2.c File Reference

Include dependency graph for pfmlib_os_linux_v2.c:

Go to the source code of this file.

Data Structures
struct	pfarg_ctx22_t

Macros
#define	PFM_pfm_create_context   (_pfmlib_get_sys_base()+0)
#define	PFM_pfm_write_pmcs   (_pfmlib_get_sys_base()+1)
#define	PFM_pfm_write_pmds   (_pfmlib_get_sys_base()+2)
#define	PFM_pfm_read_pmds   (_pfmlib_get_sys_base()+3)
#define	PFM_pfm_load_context   (_pfmlib_get_sys_base()+4)
#define	PFM_pfm_start   (_pfmlib_get_sys_base()+5)
#define	PFM_pfm_stop   (_pfmlib_get_sys_base()+6)
#define	PFM_pfm_restart   (_pfmlib_get_sys_base()+7)
#define	PFM_pfm_create_evtsets   (_pfmlib_get_sys_base()+8)
#define	PFM_pfm_getinfo_evtsets   (_pfmlib_get_sys_base()+9)
#define	PFM_pfm_delete_evtsets   (_pfmlib_get_sys_base()+10)
#define	PFM_pfm_unload_context   (_pfmlib_get_sys_base()+11)

Functions
static int	pfm_create_context_2v3 (pfarg_ctx_t *ctx, char *name, void *smpl_arg, size_t smpl_size)
static int	pfm_write_pmcs_2v3 (int fd, pfarg_pmc_t *pmcs, int count)
static int	pfm_write_pmds_2v3 (int fd, pfarg_pmd_t *pmds, int count)
static int	pfm_read_pmds_2v3 (int fd, pfarg_pmd_t *pmds, int count)
static int	pfm_load_context_2v3 (int fd, pfarg_load_t *load)
static int	pfm_start_2v3 (int fd, pfarg_start_t *start)
static int	pfm_stop_2v3 (int fd)
static int	pfm_restart_2v3 (int fd)
static int	pfm_create_evtsets_2v3 (int fd, pfarg_setdesc_t *setd, int count)
static int	pfm_delete_evtsets_2v3 (int fd, pfarg_setdesc_t *setd, int count)
static int	pfm_getinfo_evtsets_2v3 (int fd, pfarg_setinfo_t *info, int count)
static int	pfm_unload_context_2v3 (int fd)
int	pfm_load_context (int fd, pfarg_load_t *load)
int	pfm_start (int fd, pfarg_start_t *start)
int	pfm_stop (int fd)
int	pfm_restart (int fd)
int	pfm_create_evtsets (int fd, pfarg_setdesc_t *setd, int count)
int	pfm_delete_evtsets (int fd, pfarg_setdesc_t *setd, int count)
int	pfm_getinfo_evtsets (int fd, pfarg_setinfo_t *info, int count)
int	pfm_unload_context (int fd)
int	pfm_create_context (pfarg_ctx_t *ctx, char *name, void *smpl_arg, size_t smpl_size)
int	pfm_write_pmcs (int fd, pfarg_pmc_t *pmcs, int count)
int	pfm_write_pmds (int fd, pfarg_pmd_t *pmds, int count)
int	pfm_read_pmds (int fd, pfarg_pmd_t *pmds, int count)

Macro Definition Documentation

PFM_pfm_create_context

#define PFM_pfm_create_context   (_pfmlib_get_sys_base()+0)

Definition at line 41 of file pfmlib_os_linux_v2.c.

PFM_pfm_create_evtsets

#define PFM_pfm_create_evtsets   (_pfmlib_get_sys_base()+8)

Definition at line 49 of file pfmlib_os_linux_v2.c.

PFM_pfm_delete_evtsets

#define PFM_pfm_delete_evtsets   (_pfmlib_get_sys_base()+10)

Definition at line 51 of file pfmlib_os_linux_v2.c.

PFM_pfm_getinfo_evtsets

#define PFM_pfm_getinfo_evtsets   (_pfmlib_get_sys_base()+9)

Definition at line 50 of file pfmlib_os_linux_v2.c.

PFM_pfm_load_context

#define PFM_pfm_load_context   (_pfmlib_get_sys_base()+4)

Definition at line 45 of file pfmlib_os_linux_v2.c.

PFM_pfm_read_pmds

#define PFM_pfm_read_pmds   (_pfmlib_get_sys_base()+3)

Definition at line 44 of file pfmlib_os_linux_v2.c.

PFM_pfm_restart

#define PFM_pfm_restart   (_pfmlib_get_sys_base()+7)

Definition at line 48 of file pfmlib_os_linux_v2.c.

PFM_pfm_start

#define PFM_pfm_start   (_pfmlib_get_sys_base()+5)

Definition at line 46 of file pfmlib_os_linux_v2.c.

PFM_pfm_stop

#define PFM_pfm_stop   (_pfmlib_get_sys_base()+6)

Definition at line 47 of file pfmlib_os_linux_v2.c.

PFM_pfm_unload_context

#define PFM_pfm_unload_context   (_pfmlib_get_sys_base()+11)

Definition at line 52 of file pfmlib_os_linux_v2.c.

PFM_pfm_write_pmcs

#define PFM_pfm_write_pmcs   (_pfmlib_get_sys_base()+1)

Definition at line 42 of file pfmlib_os_linux_v2.c.

PFM_pfm_write_pmds

#define PFM_pfm_write_pmds   (_pfmlib_get_sys_base()+2)

Definition at line 43 of file pfmlib_os_linux_v2.c.

Function Documentation

pfm_create_context()

int pfm_create_context	(	pfarg_ctx_t *	ctx,
		char *	name,
		void *	smpl_arg,
		size_t	smpl_size
	)

Definition at line 483 of file pfmlib_os_linux_v2.c.

{
    if (_pfmlib_major_version < 3) {
        /*
         * In perfmon v2.2, the pfm_create_context() call had a
         * different return value. It used to return errno, in v2.3
         * it returns the file descriptor.
         */
        if (_pfmlib_minor_version < 3) {
            int r;
            pfarg_ctx22_t ctx22;
 
            /* transfer the v2.3 contents to v2.2 for sys call */
            memset (&ctx22, 0, sizeof(ctx22));
            if (name != NULL) {
                memcpy (ctx22.ctx_smpl_buf_id, name, 16);
            }
            ctx22.ctx_flags = ctx->ctx_flags;
            /* ctx22.ctx_fd returned */
            /* ctx22.ctx_smpl_buf_size returned */
            memcpy (ctx22.ctx_reserved3, &ctx->ctx_reserved1, 64);
 
            r = syscall (PFM_pfm_create_context, &ctx22, smpl_arg, smpl_size);
 
            /* transfer the v2.2 contents back to v2.3 */
            ctx->ctx_flags = ctx22.ctx_flags;
            memcpy (&ctx->ctx_reserved1, ctx22.ctx_reserved3, 64);
 
            return (r < 0 ? r : ctx22.ctx_fd);
        } else {
            return (int)syscall(PFM_pfm_create_context, ctx, name, smpl_arg, smpl_size);
        }
    }
    return pfm_create_context_2v3(ctx, name, smpl_arg, smpl_size);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_create_context_2v3()

static int pfm_create_context_2v3 ( pfarg_ctx_t *  ctx, char *  name, void *  smpl_arg, size_t  smpl_size  )

static

Definition at line 72 of file pfmlib_os_linux_v2.c.

{
    pfarg_sinfo_t cinfo;
    uint32_t fl;
 
    /*
     * simulate kernel returning error on NULL ctx
     */
    if (!ctx) {
        errno = EINVAL;
        return -1;
    } 
 
    /*
     * if sampling format is used, then force SMPL_FMT
     * and PFM_FL_SINFO because it comes first
     */
    fl = ctx->ctx_flags;
    if (name || smpl_arg || smpl_size)
        fl |= PFM_FL_SMPL_FMT;
    
    return pfm_create(fl, &cinfo, name, smpl_arg, smpl_size);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_create_evtsets()

int pfm_create_evtsets	(	int	fd,
		pfarg_setdesc_t *	setd,
		int	count
	)

Definition at line 449 of file pfmlib_os_linux_v2.c.

{
    if (_pfmlib_major_version < 3)
        return (int)syscall(PFM_pfm_create_evtsets, fd, setd, count);
    return pfm_create_evtsets_2v3(fd, setd, count);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_create_evtsets_2v3()

static int pfm_create_evtsets_2v3 ( int  fd, pfarg_setdesc_t *  setd, int  count  )

static

Definition at line 257 of file pfmlib_os_linux_v2.c.

{
    /* set_desc an setdesc are identical so we can cast */
    return pfm_create_sets(fd, 0, (pfarg_set_desc_t *)setd, count * sizeof(pfarg_setdesc_t));
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_delete_evtsets()

int pfm_delete_evtsets	(	int	fd,
		pfarg_setdesc_t *	setd,
		int	count
	)

Definition at line 457 of file pfmlib_os_linux_v2.c.

{
    if (_pfmlib_major_version < 3)
        return (int)syscall(PFM_pfm_delete_evtsets, fd, setd, count);
    return pfm_delete_evtsets_2v3(fd, setd, count);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_delete_evtsets_2v3()

static int pfm_delete_evtsets_2v3 ( int  fd, pfarg_setdesc_t *  setd, int  count  )

static

Definition at line 264 of file pfmlib_os_linux_v2.c.

{
    __pfm_vbprintf("pfm_delete_evtsets not supported in v3.x\n");
    errno = EINVAL;
    return -1;
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_getinfo_evtsets()

int pfm_getinfo_evtsets	(	int	fd,
		pfarg_setinfo_t *	info,
		int	count
	)

Definition at line 465 of file pfmlib_os_linux_v2.c.

{
    if (_pfmlib_major_version < 3)
        return (int)syscall(PFM_pfm_getinfo_evtsets, fd, info, count);
 
    return pfm_getinfo_evtsets_2v3(fd, info, count);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_getinfo_evtsets_2v3()

static int pfm_getinfo_evtsets_2v3 ( int  fd, pfarg_setinfo_t *  info, int  count  )

static

Definition at line 272 of file pfmlib_os_linux_v2.c.

{
    pfarg_sinfo_t cinfo;
    pfarg_set_info_t *sif;
    int fdx, i, ret, errno_save;
 
    if (!info) {
        errno = EFAULT;
        return -1;
    }
    /*
     * initialize bitmask to all available and defer checking
     * until kernel. That means libpfm must be misled but we
     * have no other way of fixing this
     */
    memset(&cinfo, -1, sizeof(cinfo));
 
    /*
     * XXX: relies on the fact that cinfo is independent
     * of the session type (which is wrong in the future)
     */
    fdx = pfm_create(0, &cinfo);
    if (fdx > -1)
        close(fdx);
 
    sif = calloc(count, sizeof(*sif));
    if (!sif) {
        errno = ENOMEM;
        return -1;
    }
 
    for (i=0 ; i < count; i++)
        sif[i].set_id = info[i].set_id;
 
    ret = pfm_getinfo_sets(fd, 0, sif, count * sizeof(pfarg_set_info_t));
    errno_save = errno;
    if (ret)
        goto skip;
 
    for (i=0 ; i < count; i++) {
        info[i].set_flags = 0;
 
        memcpy(info[i].set_ovfl_pmds,
               sif[i].set_ovfl_pmds,
               sizeof(info[i].set_ovfl_pmds));
 
        info[i].set_runs = sif[i].set_runs;
        info[i].set_timeout = sif[i].set_timeout;
        info[i].set_act_duration = sif[i].set_duration;
 
        memcpy(info[i].set_avail_pmcs,
               cinfo.sif_avail_pmcs,
               sizeof(info[i].set_avail_pmcs));
 
        memcpy(info[i].set_avail_pmds,
               cinfo.sif_avail_pmds,
               sizeof(info[i].set_avail_pmds));
    }
skip:
    free(sif);
    errno = errno_save;
    return ret;
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_load_context()

int pfm_load_context	(	int	fd,
		pfarg_load_t *	load
	)

Definition at line 417 of file pfmlib_os_linux_v2.c.

{
    if (_pfmlib_major_version < 3)
        return (int)syscall(PFM_pfm_load_context, fd, load);
    return pfm_load_context_2v3(fd, load);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_load_context_2v3()

static int pfm_load_context_2v3 ( int  fd, pfarg_load_t *  load  )

static

Definition at line 225 of file pfmlib_os_linux_v2.c.

{
    if (!load) {
        errno = EINVAL;
        return -1;
    }
    return pfm_attach(fd, 0, load->load_pid);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_read_pmds()

int pfm_read_pmds	(	int	fd,
		pfarg_pmd_t *	pmds,
		int	count
	)

Definition at line 536 of file pfmlib_os_linux_v2.c.

{
    if (_pfmlib_major_version < 3)
        return (int)syscall(PFM_pfm_read_pmds, fd, pmds, count);
    return pfm_read_pmds_2v3(fd, pmds, count);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_read_pmds_2v3()

static int pfm_read_pmds_2v3 ( int  fd, pfarg_pmd_t *  pmds, int  count  )

static

Definition at line 177 of file pfmlib_os_linux_v2.c.

{
    pfarg_pmd_attr_t *pmas;
    int errno_save;
    int i, ret;
    size_t sz;
 
    sz = count * sizeof(*pmas);
 
    if (!pmds)
        return pfm_write(fd, 0, PFM_RW_PMD, NULL, sz);
 
    pmas = calloc(count, sizeof(*pmas));
    if (!pmas) {
        errno = ENOMEM;
        return -1;
    }
 
    for (i=0 ; i < count; i++) {
        pmas[i].reg_num = pmds[i].reg_num;
        pmas[i].reg_set = pmds[i].reg_set;
        pmas[i].reg_flags = pmds[i].reg_flags;
        pmas[i].reg_value = pmds[i].reg_value;
    }
 
    ret = pfm_read(fd, 0, PFM_RW_PMD_ATTR, pmas, sz);
 
    errno_save = errno;
 
    for (i=0 ; i < count; i++) {
        pmds[i].reg_value = pmas[i].reg_value;
 
        pmds[i].reg_long_reset = pmas[i].reg_long_reset;
        pmds[i].reg_short_reset = pmas[i].reg_short_reset;
        pmds[i].reg_last_reset_val = pmas[i].reg_last_value;
 
        pmds[i].reg_ovfl_switch_cnt = pmas[i].reg_ovfl_swcnt;
        /* skip reg_smpl_pmds */
        /* skip reg_reset_pmds */
        /* skip reg_smpl_eventid */
        /* skip reg_random_mask */
    }
    free(pmas);
    errno = errno_save;
    return ret;
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_restart()

int pfm_restart

(

int

fd

)

Definition at line 441 of file pfmlib_os_linux_v2.c.

{
    if (_pfmlib_major_version < 3)
        return (int)syscall(PFM_pfm_restart, fd);
    return pfm_restart_2v3(fd);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_restart_2v3()

static int pfm_restart_2v3 ( int  fd )

static

Definition at line 251 of file pfmlib_os_linux_v2.c.

{
    return pfm_set_state(fd, 0, PFM_ST_RESTART);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_start()

int pfm_start	(	int	fd,
		pfarg_start_t *	start
	)

Definition at line 425 of file pfmlib_os_linux_v2.c.

{
    if (_pfmlib_major_version < 3)
        return (int)syscall(PFM_pfm_start, fd, start);
    return pfm_start_2v3(fd, start);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_start_2v3()

static int pfm_start_2v3 ( int  fd, pfarg_start_t *  start  )

static

Definition at line 235 of file pfmlib_os_linux_v2.c.

{
    if (start) {
        __pfm_vbprintf("pfarg_start_t not supported in v3.x\n");
        errno = EINVAL;
        return -1;
    }
    return pfm_set_state(fd, 0, PFM_ST_START);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_stop()

int pfm_stop

(

int

fd

)

Definition at line 433 of file pfmlib_os_linux_v2.c.

{
    if (_pfmlib_major_version < 3)
        return (int)syscall(PFM_pfm_stop, fd);
    return pfm_stop_2v3(fd);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_stop_2v3()

static int pfm_stop_2v3 ( int  fd )

static

Definition at line 245 of file pfmlib_os_linux_v2.c.

{
    return pfm_set_state(fd, 0, PFM_ST_STOP);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_unload_context()

int pfm_unload_context

(

int

fd

)

Definition at line 474 of file pfmlib_os_linux_v2.c.

{
    if (_pfmlib_major_version < 3)
        return (int)syscall(PFM_pfm_unload_context, fd);
 
    return pfm_unload_context_2v3(fd);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_unload_context_2v3()

static int pfm_unload_context_2v3 ( int  fd )

static

Definition at line 337 of file pfmlib_os_linux_v2.c.

{
    return pfm_attach(fd, 0, PFM_NO_TARGET);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_write_pmcs()

int pfm_write_pmcs	(	int	fd,
		pfarg_pmc_t *	pmcs,
		int	count
	)

Definition at line 520 of file pfmlib_os_linux_v2.c.

{
    if (_pfmlib_major_version < 3)
        return (int)syscall(PFM_pfm_write_pmcs, fd, pmcs, count);
    return pfm_write_pmcs_2v3(fd, pmcs, count);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_write_pmcs_2v3()

static int pfm_write_pmcs_2v3 ( int  fd, pfarg_pmc_t *  pmcs, int  count  )

static

Definition at line 97 of file pfmlib_os_linux_v2.c.

{
    pfarg_pmr_t *pmrs;
    int errno_save;
    int i, ret;
    size_t sz;
 
    sz = count * sizeof(pfarg_pmr_t);
 
    if (!pmcs)
        return pfm_write(fd, 0, PFM_RW_PMC, NULL, sz);
 
    pmrs = calloc(count, sizeof(*pmrs));
    if (!pmrs) {
        errno = ENOMEM;
        return -1;
    }
 
    for (i=0 ; i < count; i++) {
        pmrs[i].reg_num = pmcs[i].reg_num;
        pmrs[i].reg_set = pmcs[i].reg_set;
        pmrs[i].reg_flags = pmcs[i].reg_flags;
        pmrs[i].reg_value = pmcs[i].reg_value;
    }
 
    ret = pfm_write(fd, 0, PFM_RW_PMC, pmrs, sz);
    errno_save = errno;
    free(pmrs);
    errno = errno_save;
    return ret;
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_write_pmds()

int pfm_write_pmds	(	int	fd,
		pfarg_pmd_t *	pmds,
		int	count
	)

Definition at line 528 of file pfmlib_os_linux_v2.c.

{
    if (_pfmlib_major_version < 3)
        return (int)syscall(PFM_pfm_write_pmds, fd, pmds, count);
    return pfm_write_pmds_2v3(fd, pmds, count);
}

Here is the call graph for this function:

Here is the caller graph for this function:

pfm_write_pmds_2v3()

static int pfm_write_pmds_2v3 ( int  fd, pfarg_pmd_t *  pmds, int  count  )

static

Definition at line 130 of file pfmlib_os_linux_v2.c.

{
    pfarg_pmd_attr_t *pmas;
    size_t sz;
    int errno_save;
    int i, ret;
 
    sz = count * sizeof(*pmas);
 
    if (!pmds)
        return pfm_write(fd, 0, PFM_RW_PMD, NULL, sz);
 
    pmas = calloc(count, sizeof(*pmas));
    if (!pmas) {
        errno = ENOMEM;
        return -1;
    }
 
    for (i=0 ; i < count; i++) {
        pmas[i].reg_num = pmds[i].reg_num;
        pmas[i].reg_set = pmds[i].reg_set;
        pmas[i].reg_flags = pmds[i].reg_flags;
        pmas[i].reg_value = pmds[i].reg_value;
 
        pmas[i].reg_long_reset = pmds[i].reg_long_reset;
        pmas[i].reg_short_reset = pmds[i].reg_short_reset;
        /* skip last_value not used on write */
 
        pmas[i].reg_ovfl_swcnt = pmds[i].reg_ovfl_switch_cnt;
 
        memcpy(pmas[i].reg_smpl_pmds, pmds[i].reg_smpl_pmds, sizeof(pmds[i].reg_smpl_pmds));
        memcpy(pmas[i].reg_reset_pmds, pmds[i].reg_reset_pmds, sizeof(pmds[i].reg_reset_pmds));
 
        pmas[i].reg_smpl_eventid = pmds[i].reg_smpl_eventid;
        pmas[i].reg_random_mask = pmds[i].reg_random_mask;
    }
 
    ret = pfm_write(fd, 0, PFM_RW_PMD_ATTR, pmas, sz);
 
    errno_save = errno;
    free(pmas);
    errno = errno_save;
 
    return ret;
}

Here is the call graph for this function:

Here is the caller graph for this function: