Commit 9059b284 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge tag 'perf-core-for-mingo-2' of... 

Merge tag 'perf-core-for-mingo-2' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

 into perf/core

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

User visible changes:

  - Add 'socket' sort entry, to sort by the processor socket in
    'perf top' and 'perf report'. (Kan Liang)

  - Introduce --socket-filter to 'perf report', for filtering by processor
    socket. (Kan Liang)

  - Add new "Zoom into Processor Socket" operation in the perf hists browser,
    used in 'perf top' and 'perf report'. (Kan Liang)

  - Fix the 'CPU' hist browser column width calculation. (Arnaldo Carvalho de Melo)

Infrastructure changes:

  - 'perf test' fixes for the object code reading entry. (Jan Stancek)

  - Add processor socket and cpu topology 'perf test' entries. (Kan Liang)

  - Introduce more sysfs__read_TYPE() helpers. (Arnaldo Carvalho de Melo)

  - Group cpu information reading functions in tools/lib/api/cpu.[ch],
    starting with cpu__get_max_freq() from a patchkit by Kan Liang.
    (Arnaldo Carvalho de Melo)

  - Retrieve the MSR PMU type from a perf.data file header and store it
    in struct perf_env. (Kan Liang)

  - Add tools/include into CTAGS file list. (Jiri Olsa)

  - Add iterator function for perf tests. (Matt Fleming)

  - Switch to tracing_patch interface. (Jiri Olsa)

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parents 8f3e5684 92d424ae

tools/lib/api/Build

+1 −0
Original line number Diff line number Diff line 
libapi-y += fd/

libapi-y += fs/

libapi-y += cpu.o

tools/lib/api/cpu.c

0 → 100644
+18 −0
Original line number Diff line number Diff line 
#include <stdio.h>



#include "cpu.h"

#include "fs/fs.h"



int cpu__get_max_freq(unsigned long long *freq)

{

	char entry[PATH_MAX];

	int cpu;



	if (sysfs__read_int("devices/system/cpu/online", &cpu) < 0)

		return -1;



	snprintf(entry, sizeof(entry),

		 "devices/system/cpu/cpu%d/cpufreq/cpuinfo_max_freq", cpu);



	return sysfs__read_ull(entry, freq);

}

tools/lib/api/cpu.h

0 → 100644
+6 −0
Original line number Diff line number Diff line 
#ifndef __API_CPU__

#define __API_CPU__



int cpu__get_max_freq(unsigned long long *freq);



#endif /* __API_CPU__ */

tools/lib/api/fs/Build

+0 −3
Original line number Diff line number Diff line 
libapi-y += fs.o

libapi-y += tracing_path.o
 
libapi-y += debugfs.o

libapi-y += findfs.o

libapi-y += tracefs.o

tools/lib/api/fs/debugfs.c

deleted100644 → 0
+0 −77
Original line number Diff line number Diff line 
#define _GNU_SOURCE

#include <errno.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <stdbool.h>

#include <sys/vfs.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <sys/mount.h>

#include <linux/kernel.h>



#include "debugfs.h"

#include "tracefs.h"



#ifndef DEBUGFS_DEFAULT_PATH

#define DEBUGFS_DEFAULT_PATH		"/sys/kernel/debug"

#endif



char debugfs_mountpoint[PATH_MAX + 1] = DEBUGFS_DEFAULT_PATH;



static const char * const debugfs_known_mountpoints[] = {

	DEBUGFS_DEFAULT_PATH,

	"/debug",

	0,

};



static bool debugfs_found;



bool debugfs_configured(void)

{

	return debugfs_find_mountpoint() != NULL;

}



/* find the path to the mounted debugfs */

const char *debugfs_find_mountpoint(void)

{

	const char *ret;



	if (debugfs_found)

		return (const char *)debugfs_mountpoint;



	ret = find_mountpoint("debugfs", (long) DEBUGFS_MAGIC,

			      debugfs_mountpoint, PATH_MAX + 1,

			      debugfs_known_mountpoints);

	if (ret)

		debugfs_found = true;



	return ret;

}



/* 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())

		goto out;



	/* if not mounted and no argument */

	if (mountpoint == NULL) {

		/* see if environment variable set */

		mountpoint = getenv(PERF_DEBUGFS_ENVIRONMENT);

		/* if no environment variable, use default */

		if (mountpoint == NULL)

			mountpoint = DEBUGFS_DEFAULT_PATH;

	}



	if (mount(NULL, mountpoint, "debugfs", 0, NULL) < 0)

		return NULL;



	/* save the mountpoint */

	debugfs_found = true;

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

out:

	return debugfs_mountpoint;

}

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