Commit 0a119538 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge tag 'perf-core-for-mingo' of... 

Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

 into perf/core

Conflicts:
	tools/Makefile

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

. Honor parallel jobs, fix from Borislav Petkov

. Introduce tools/lib/lk library, initially just removing duplication
  among tools/perf and tools/vm. from Borislav Petkov

. Fix build on non-glibc systems due to libio.h absence, from Cody P Schafer.

. Remove some perf_session and tracing dead code, from David Ahern.

. Introduce perf stat --repeat forever, from Frederik Deweerdt.

. Add perf test entries for checking --cpu in record and stat, from Jiri Olsa.

. Add perf test entries for checking breakpoint overflow signal handler issues,
  from Jiri Olsa.

. Add perf test entry for for checking number of EXIT events, from Namhyung Kim.

. Simplify some perf_evlist methods and to allow 'stat' to share code with
  'record' and 'trace'.

. Remove dead code in related to libtraceevent integration, from Namhyung Kim.

. Event group view for 'annotate' in --stdio, --tui and --gtk, from Namhyung Kim.

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
[ resolved the trivial merge conflict with upstream ]
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parents 3bf23917 bc96b361

Makefile

+2 −2
Original line number Diff line number Diff line
@@ -1331,11 +1331,11 @@ kernelversion: 
# Clear a bunch of variables before executing the submake

tools/: FORCE

	$(Q)mkdir -p $(objtree)/tools

	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS= O=$(objtree) subdir=tools -C $(src)/tools/

	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/



tools/%: FORCE

	$(Q)mkdir -p $(objtree)/tools

	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS= O=$(objtree) subdir=tools -C $(src)/tools/ $*

	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $*



# Single targets

# ---------------------------------------------------------------------------

tools/Makefile

+14 −2
Original line number Diff line number Diff line
@@ -34,7 +34,13 @@ help: 
cpupower: FORCE

	$(call descend,power/$@)



cgroup firewire lguest perf usb virtio vm: FORCE

cgroup firewire guest usb virtio vm: FORCE

	$(call descend,$@)



liblk: FORCE

	$(call descend,lib/lk)



perf: liblk FORCE

	$(call descend,$@)



selftests: FORCE
@@ -62,7 +68,13 @@ install: cgroup_install cpupower_install firewire_install lguest_install \ 
cpupower_clean:

	$(call descend,power/cpupower,clean)



cgroup_clean firewire_clean lguest_clean perf_clean usb_clean virtio_clean vm_clean:

cgroup_clean firewire_clean lguest_clean usb_clean virtio_clean vm_clean:

	$(call descend,$(@:_clean=),clean)



liblk_clean:

	$(call descend,lib/lk,clean)



perf_clean: liblk_clean

	$(call descend,$(@:_clean=),clean)



selftests_clean:

tools/lib/lk/Makefile

0 → 100644
+35 −0
Original line number Diff line number Diff line 
include ../../scripts/Makefile.include



# guard against environment variables

LIB_H=

LIB_OBJS=



LIB_H += debugfs.h



LIB_OBJS += $(OUTPUT)debugfs.o



LIBFILE = liblk.a



CFLAGS = -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) -fPIC

EXTLIBS = -lpthread -lrt -lelf -lm

ALL_CFLAGS = $(CFLAGS) $(BASIC_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64

ALL_LDFLAGS = $(LDFLAGS)



RM = rm -f



$(LIBFILE): $(LIB_OBJS)

	$(QUIET_AR)$(RM) $@ && $(AR) rcs $(OUTPUT)$@ $(LIB_OBJS)



$(LIB_OBJS): $(LIB_H)



$(OUTPUT)%.o: %.c

	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) $<

$(OUTPUT)%.s: %.c

	$(QUIET_CC)$(CC) -S $(ALL_CFLAGS) $<

$(OUTPUT)%.o: %.S

	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) $<



clean:

	$(RM) $(LIB_OBJS) $(LIBFILE)



.PHONY: clean

tools/perf/util/debugfs.c→tools/lib/lk/debugfs.c

+18 −31
Original line number Diff line number Diff line 
#include "util.h"

#include "debugfs.h"

#include "cache.h"



#include <linux/kernel.h>

#include <errno.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <stdbool.h>

#include <sys/vfs.h>

#include <sys/mount.h>

#include <linux/magic.h>

#include <linux/kernel.h>



#include "debugfs.h"



static int debugfs_premounted;

char debugfs_mountpoint[PATH_MAX + 1] = "/sys/kernel/debug";

char tracing_events_path[PATH_MAX + 1] = "/sys/kernel/debug/tracing/events";



static const char *debugfs_known_mountpoints[] = {

static const char * const debugfs_known_mountpoints[] = {

	"/sys/kernel/debug/",

	"/debug/",

	0,

};



static int debugfs_found;

static bool debugfs_found;



/* find the path to the mounted debugfs */

const char *debugfs_find_mountpoint(void)

{

	const char **ptr;

	const char * const *ptr;

	char type[100];

	FILE *fp;
@@ -30,7 +33,7 @@ const char *debugfs_find_mountpoint(void) 
	ptr = debugfs_known_mountpoints;

	while (*ptr) {

		if (debugfs_valid_mountpoint(*ptr) == 0) {

			debugfs_found = 1;

			debugfs_found = true;

			strcpy(debugfs_mountpoint, *ptr);

			return debugfs_mountpoint;

		}
@@ -52,7 +55,7 @@ const char *debugfs_find_mountpoint(void) 
	if (strcmp(type, "debugfs") != 0)

		return NULL;



	debugfs_found = 1;

	debugfs_found = true;



	return debugfs_mountpoint;

}
@@ -71,21 +74,12 @@ int debugfs_valid_mountpoint(const char *debugfs) 
	return 0;

}



static void debugfs_set_tracing_events_path(const char *mountpoint)

{

	snprintf(tracing_events_path, sizeof(tracing_events_path), "%s/%s",

		 mountpoint, "tracing/events");

}



/* mount the debugfs somewhere if it's not mounted */



char *debugfs_mount(const char *mountpoint)

{

	/* see if it's already mounted */

	if (debugfs_find_mountpoint()) {

		debugfs_premounted = 1;

	if (debugfs_find_mountpoint())

		goto out;

	}



	/* if not mounted and no argument */

	if (mountpoint == NULL) {
@@ -100,15 +94,8 @@ char *debugfs_mount(const char *mountpoint) 
		return NULL;



	/* save the mountpoint */

	debugfs_found = 1;

	debugfs_found = true;

	strncpy(debugfs_mountpoint, mountpoint, sizeof(debugfs_mountpoint));

out:

	debugfs_set_tracing_events_path(debugfs_mountpoint);

	return debugfs_mountpoint;

}
 


void debugfs_set_path(const char *mountpoint)

{

	snprintf(debugfs_mountpoint, sizeof(debugfs_mountpoint), "%s", mountpoint);

	debugfs_set_tracing_events_path(mountpoint);

}

tools/lib/lk/debugfs.h

0 → 100644
+29 −0
Original line number Diff line number Diff line 
#ifndef __LK_DEBUGFS_H__

#define __LK_DEBUGFS_H__



#define _STR(x) #x

#define STR(x) _STR(x)



/*

 * On most systems <limits.h> would have given us this, but  not on some systems

 * (e.g. GNU/Hurd).

 */

#ifndef PATH_MAX

#define PATH_MAX 4096

#endif



#ifndef DEBUGFS_MAGIC

#define DEBUGFS_MAGIC          0x64626720

#endif



#ifndef PERF_DEBUGFS_ENVIRONMENT

#define PERF_DEBUGFS_ENVIRONMENT "PERF_DEBUGFS_DIR"

#endif



const char *debugfs_find_mountpoint(void);

int debugfs_valid_mountpoint(const char *debugfs);

char *debugfs_mount(const char *mountpoint);



extern char debugfs_mountpoint[];



#endif /* __LK_DEBUGFS_H__ */

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