opd_sfile.c File Reference

#include "opd_sfile.h"
#include "opd_trans.h"
#include "opd_kernel.h"
#include "opd_mangling.h"
#include "opd_anon.h"
#include "opd_printf.h"
#include "opd_stats.h"
#include "opd_extended.h"
#include "oprofiled.h"
#include "op_libiberty.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>

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Data Structures
struct	kern_cmdline
Defines
#define	HASH_SIZE 2048
#define	HASH_BITS (HASH_SIZE - 1)
#define	LRU_AMOUNT 256
Typedefs
typedef int(*	sfile_func )(struct sfile , void )
Functions
static	LIST_HEAD (lru_list)
static unsigned long	sfile_hash (struct transient const trans, struct kernel_image ki)
static int	do_match (struct sfile const sf, cookie_t cookie, cookie_t app_cookie, struct kernel_image const ki, struct anon_mapping const *anon, pid_t tgid, pid_t tid, unsigned int cpu)
static int	trans_match (struct transient const trans, struct sfile const sfile, struct kernel_image const *ki)
int	sfile_equal (struct sfile const sf, struct sfile const sf2)
static int	is_sf_ignored (struct sfile const *sf)
static struct sfile *	create_sfile (unsigned long hash, struct transient const trans, struct kernel_image ki)
struct sfile *	sfile_find (struct transient const *trans)
void	sfile_dup (struct sfile to, struct sfile from)
static odb_t *	get_file (struct transient const *trans, int is_cg)
static void	verbose_print_sample (struct sfile *sf, vma_t pc, uint counter)
static void	verbose_sample (struct transient const *trans, vma_t pc)
static void	verbose_arc (struct transient const *trans, vma_t from, vma_t to)
static void	sfile_log_arc (struct transient const *trans)
void	sfile_log_sample (struct transient const *trans)
void	sfile_log_sample_count (struct transient const *trans, unsigned long int count)
static int	close_sfile (struct sfile sf, void data __attribute__((unused)))
static void	kill_sfile (struct sfile *sf)
static int	sync_sfile (struct sfile sf, void data __attribute__((unused)))
static int	is_sfile_kernel (struct sfile sf, void data __attribute__((unused)))
static int	is_sfile_anon (struct sfile sf, void data)
static void	for_one_sfile (struct sfile sf, sfile_func func, void data)
static void	for_each_sfile (sfile_func func, void *data)
void	sfile_clear_kernel (void)
void	sfile_clear_anon (struct anon_mapping *anon)
void	sfile_sync_files (void)
void	sfile_close_files (void)
static int	always_true (void)
int	sfile_lru_clear (void)
void	sfile_get (struct sfile *sf)
void	sfile_put (struct sfile *sf)
void	sfile_init (void)
Variables
static struct list_head	hashes [HASH_SIZE]
static struct list_head	kernel_cmdlines [HASH_SIZE]

Detailed Description

Management of sample files

Remarks:: Copyright 2002, 2005 OProfile authors; Read the file COPYING

Author:: John Levon; Philippe Elie

Definition in file opd_sfile.c.

Define Documentation

#define HASH_BITS (HASH_SIZE - 1)

Definition at line 33 of file opd_sfile.c.

#define HASH_SIZE 2048

Definition at line 32 of file opd_sfile.c.

#define LRU_AMOUNT 256

Definition at line 700 of file opd_sfile.c.

Typedef Documentation

typedef int(* sfile_func)(struct sfile *, void *)

Definition at line 629 of file opd_sfile.c.

Function Documentation

static int always_true ( void ) [static]

Definition at line 694 of file opd_sfile.c.

Referenced by sfile_lru_clear().

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static int close_sfile	(	struct sfile *	sf,
		void *data	__attribute__(unused)
	)			`[static]`

Definition at line 582 of file opd_sfile.c.

References sfile::files, odb_close(), op_nr_counters, and opd_ext_sfile_close().

Referenced by kill_sfile(), and sfile_close_files().

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static struct sfile* create_sfile	(	unsigned long	hash,
		struct transient const *	trans,
		struct kernel_image *	ki
	)			`[static, read]`

create a new sfile matching the current transient parameters

Definition at line 210 of file opd_sfile.c.

References sfile::anon, sfile::app_cookie, sfile::cg_hash, CG_HASH_SIZE, sfile::cookie, operf_transient::cpu, sfile::cpu, sfile::embedded_offset, sfile::ext_files, sfile::files, sfile::hashval, sfile::ignored, operf_transient::in_kernel, INVALID_COOKIE, is_sf_ignored(), sfile::kernel, list_init(), NO_COOKIE, odb_init(), op_nr_counters, opd_ext_sfile_create(), separate_cpu, separate_kernel, separate_lib, separate_thread, operf_transient::tgid, sfile::tgid, operf_transient::tid, sfile::tid, trans, and UNUSED_EMBEDDED_OFFSET.

Referenced by sfile_find().

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static int do_match	(	struct sfile const *	sf,
		cookie_t	cookie,
		cookie_t	app_cookie,
		struct kernel_image const *	ki,
		struct anon_mapping const *	anon,
		pid_t	tgid,
		pid_t	tid,
		unsigned int	cpu
	)			`[static]`

Definition at line 129 of file opd_sfile.c.

References sfile::anon, sfile::app_cookie, sfile::cookie, sfile::cpu, sfile::kernel, separate_cpu, separate_kernel, separate_lib, separate_thread, sfile::tgid, and sfile::tid.

Referenced by sfile_equal(), and trans_match().

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static void for_each_sfile	(	sfile_func	func,
		void *	data
	)			`[static]`

Definition at line 658 of file opd_sfile.c.

References for_one_sfile(), list_entry, list_for_each_safe, and lru.

Referenced by sfile_clear_anon(), sfile_clear_kernel(), sfile_close_files(), and sfile_sync_files().

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static void for_one_sfile	(	struct sfile *	sf,
		sfile_func	func,
		void *	data
	)			`[static]`

Definition at line 632 of file opd_sfile.c.

References sfile::cg_hash, CG_HASH_SIZE, cg_entry::hash, kill_sfile(), list_del(), list_entry, list_for_each_safe, and cg_entry::to.

Referenced by for_each_sfile(), and sfile_lru_clear().

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static odb_t* get_file	(	struct transient const *	trans,
		int	is_cg
	)			`[static]`

Definition at line 402 of file opd_sfile.c.

References sfile::cg_hash, CG_HASH_SIZE, operf_transient::current, operf_transient::event, sfile::files, cg_entry::hash, sfile::hashval, operf_transient::last, list_add(), list_entry, list_for_each, odb_open_count(), op_nr_counters, opd_ext_sfile_get(), opd_open_sample_file(), sfile_dup(), sfile_equal(), cg_entry::to, and trans.

Referenced by sfile_log_arc(), and sfile_log_sample_count().

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static int is_sf_ignored ( struct sfile const * sf ) [static]

Definition at line 186 of file opd_sfile.c.

References sfile::anon, sfile::app_cookie, sfile::cookie, is_cookie_ignored(), is_image_ignored(), sfile::kernel, and kernel_image::name.

Referenced by create_sfile().

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static int is_sfile_anon	(	struct sfile *	sf,
		void *	data
	)			`[static]`

Definition at line 623 of file opd_sfile.c.

References sfile::anon.

Referenced by sfile_clear_anon().

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static int is_sfile_kernel	(	struct sfile *	sf,
		void *data	__attribute__(unused)
	)			`[static]`

Definition at line 617 of file opd_sfile.c.

References sfile::kernel.

Referenced by sfile_clear_kernel().

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static void kill_sfile ( struct sfile * sf ) [static]

Definition at line 596 of file opd_sfile.c.

References close_sfile(), sfile::hash, list_del(), and sfile::lru.

Referenced by for_one_sfile().

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static LIST_HEAD ( lru_list ) [static]

All sfiles are on this list.

void sfile_clear_anon ( struct anon_mapping * )

clear any sfiles for the given anon mapping

Definition at line 676 of file opd_sfile.c.

References for_each_sfile(), and is_sfile_anon().

Referenced by clear_anon_maps(), and do_lru().

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void sfile_clear_kernel ( void )

clear any sfiles that are for the kernel

Definition at line 670 of file opd_sfile.c.

References for_each_sfile(), and is_sfile_kernel().

Referenced by opd_clear_modules().

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void sfile_close_files ( void )

close sample files

Definition at line 688 of file opd_sfile.c.

References close_sfile(), and for_each_sfile().

Referenced by opd_sighup().

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void sfile_dup	(	struct sfile *	to,
		struct sfile *	from
	)

Definition at line 383 of file opd_sfile.c.

References sfile::cg_hash, CG_HASH_SIZE, sfile::files, sfile::hash, list_init(), sfile::lru, odb_init(), op_nr_counters, and opd_ext_sfile_dup().

Referenced by get_file(), and ibs_sfile_get().

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int sfile_equal	(	struct sfile const *	sf,
		struct sfile const *	sf2
	)

Definition at line 178 of file opd_sfile.c.

References sfile::anon, sfile::app_cookie, sfile::cookie, sfile::cpu, do_match(), sfile::kernel, sfile::tgid, and sfile::tid.

Referenced by get_file(), and ibs_sfile_get().

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struct sfile* sfile_find ( struct transient const * trans ) [read]

Find the sfile for the current parameters. Note that is required that the PC value be set appropriately (needed for kernel images)

Definition at line 267 of file opd_sfile.c.

References create_sfile(), find_kernel_image(), kern_cmdline::has_cmdline, sfile::hash, kern_cmdline::hash, HASH_BITS, hashes, operf_transient::in_kernel, kern_cmdline::kern_pid, kernel_cmdlines, list_add(), list_entry, list_for_each, lru, NO_COOKIE, OPD_LOST_KERNEL, OPD_LOST_NO_MAPPING, OPD_NO_APP_KERNEL_SAMPLE, OPD_NO_CTX, opd_stats, operf_transient::pc, sfile_get(), sfile_hash(), sfile_put(), operf_transient::tgid, trans, trans_match(), verbose_cookie(), verbprintf, and vsamples.

Referenced by opd_put_ibs_sample(), opd_put_sample(), and opd_put_spu_sample().

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void sfile_get ( struct sfile * sf )

remove a sfile from the lru list, protecting it from sfile_lru_clear()

Definition at line 728 of file opd_sfile.c.

References list_del(), and sfile::lru.

Referenced by opd_open_sample_file(), and sfile_find().

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static unsigned long sfile_hash	(	struct transient const *	trans,
		struct kernel_image *	ki
	)			`[static]`

Hash the transient parameters for lookup.

Definition at line 89 of file opd_sfile.c.

References operf_transient::cpu, DCOOKIE_SHIFT, kernel_image::end, HASH_BITS, operf_transient::in_kernel, NO_COOKIE, separate_cpu, separate_kernel, separate_lib, separate_thread, kernel_image::start, operf_transient::tgid, operf_transient::tid, trans, and VMA_SHIFT.

Referenced by sfile_find().

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void sfile_init ( void )

initialise hashes

Definition at line 742 of file opd_sfile.c.

References HASH_SIZE, hashes, kernel_cmdlines, and list_init().

Referenced by opd_26_init().

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static void sfile_log_arc ( struct transient const * trans ) [static]

Definition at line 491 of file opd_sfile.c.

References operf_transient::current, get_file(), operf_sfile::kernel, operf_transient::last, operf_transient::last_pc, odb_update_node(), OPD_LOST_SAMPLEFILE, opd_stats, operf_transient::pc, operf_kernel_image::start, trans, varcs, and verbose_arc().

Referenced by sfile_log_sample_count().

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void sfile_log_sample ( struct transient const * trans )

Log the sample in a previously located sfile.

Definition at line 534 of file opd_sfile.c.

References sfile_log_sample_count(), and trans.

Referenced by opd_put_sample(), and opd_put_spu_sample().

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void sfile_log_sample_count	(	struct transient const *	trans,
		unsigned long int	count
	)

Log the event/cycle count in a previously located sfile

Definition at line 540 of file opd_sfile.c.

References operf_transient::current, get_file(), operf_sfile::kernel, operf_transient::last, odb_update_node_with_offset(), OPD_LOST_SAMPLEFILE, opd_stats, operf_transient::pc, sfile_log_arc(), operf_kernel_image::start, TRACING_ON, trans, verbose_sample(), and vsamples.

Referenced by opd_log_ibs_count(), opd_log_ibs_event(), and sfile_log_sample().

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int sfile_lru_clear ( void )

clear out a certain amount of LRU entries return non-zero if the lru is already empty

Definition at line 707 of file opd_sfile.c.

References always_true(), for_one_sfile(), list_empty(), list_entry, list_for_each_safe, lru, and LRU_AMOUNT.

Referenced by complete_dump(), and opd_open_sample_file().

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void sfile_put ( struct sfile * sf )

add this sfile to lru list

Definition at line 735 of file opd_sfile.c.

References list_add_tail(), and sfile::lru.

Referenced by opd_open_sample_file(), and sfile_find().

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void sfile_sync_files ( void )

sync sample files

Definition at line 682 of file opd_sfile.c.

References for_each_sfile(), and sync_sfile().

Referenced by opd_alarm().

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static int sync_sfile	(	struct sfile *	sf,
		void *data	__attribute__(unused)
	)			`[static]`

Definition at line 604 of file opd_sfile.c.

References sfile::files, odb_sync(), op_nr_counters, and opd_ext_sfile_sync().

Referenced by sfile_sync_files().

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static int trans_match	(	struct transient const *	trans,
		struct sfile const *	sfile,
		struct kernel_image const *	ki
	)			`[static]`

Definition at line 169 of file opd_sfile.c.

References operf_transient::cpu, do_match(), operf_transient::tgid, operf_transient::tid, and trans.

Referenced by sfile_find().

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static void verbose_arc	(	struct transient const *	trans,
		vma_t	from,
		vma_t	to
	)			`[static]`

Definition at line 482 of file opd_sfile.c.

References operf_transient::current, operf_transient::event, trans, and verbose_print_sample().

Referenced by sfile_log_arc().

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static void verbose_print_sample	(	struct sfile *	sf,
		vma_t	pc,
		uint	counter
	)			`[static]`

Definition at line 455 of file opd_sfile.c.

References sfile::anon, sfile::app_cookie, sfile::cookie, kernel_image::end, anon_mapping::end, sfile::kernel, kernel_image::name, kernel_image::start, anon_mapping::start, anon_mapping::tgid, and verbose_cookie().

Referenced by verbose_arc(), and verbose_sample().

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static void verbose_sample	(	struct transient const *	trans,
		vma_t	pc
	)			`[static]`

Definition at line 473 of file opd_sfile.c.

References operf_transient::current, operf_transient::event, trans, and verbose_print_sample().

Referenced by sfile_log_sample_count().

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Variable Documentation

struct list_head hashes[HASH_SIZE] [static]

All sfiles are hashed into these lists

Definition at line 36 of file opd_sfile.c.

Referenced by sfile_find(), and sfile_init().

struct list_head kernel_cmdlines[HASH_SIZE] [static]

Definition at line 75 of file opd_sfile.c.

Referenced by sfile_find(), and sfile_init().

opd_sfile.c File Reference

Data Structures

Defines

Typedefs

Functions

Variables

Detailed Description

Define Documentation

Typedef Documentation

Function Documentation

Variable Documentation