@@ -183,12 +183,19 @@ LIBTRACECMD_DIR = $(obj)/lib/trace-cmd
LIBTRACECMD_STATIC = $(LIBTRACECMD_DIR)/libtracecmd.a
LIBTRACECMD_SHARED = $(LIBTRACECMD_DIR)/libtracecmd.so
-TRACE_LIBS = -L$(LIBTRACECMD_DIR) -ltracecmd -L$(LIBTRACEEVENT_DIR) -ltraceevent
+LIBTRACEFS_DIR = $(obj)/lib/tracefs
+LIBTRACEFS_STATIC = $(LIBTRACEFS_DIR)/libtracefs.a
+LIBTRACEFS_SHARED = $(LIBTRACEFS_DIR)/libtracefs.so
+
+TRACE_LIBS = -L$(LIBTRACECMD_DIR) -ltracecmd \
+ -L$(LIBTRACEEVENT_DIR) -ltraceevent \
+ -L$(LIBTRACEFS_DIR) -ltracefs
export LIBS TRACE_LIBS
export LIBTRACEEVENT_DIR LIBTRACECMD_DIR
export LIBTRACECMD_STATIC LIBTRACECMD_SHARED
export LIBTRACEEVENT_STATIC LIBTRACEEVENT_SHARED
+export LIBTRACEFS_STATIC LIBTRACEFS_SHARED
export Q SILENT VERBOSE EXT
@@ -198,8 +205,10 @@ include scripts/utils.mk
INCLUDES = -I$(src)/include -I$(src)/../../include
INCLUDES += -I$(src)/include/traceevent
INCLUDES += -I$(src)/include/trace-cmd
+INCLUDES += -I$(src)/include/tracefs
INCLUDES += -I$(src)/lib/traceevent/include
INCLUDES += -I$(src)/lib/trace-cmd/include
+INCLUDES += -I$(src)/lib/tracefs/include
INCLUDES += -I$(src)/tracecmd/include
INCLUDES += -I$(obj)/tracecmd/include
@@ -277,7 +286,7 @@ gui: force $(CMD_TARGETS) $(kshark-dir)/build/Makefile
@echo "gui build complete"
@echo " kernelshark located at $(kshark-dir)/bin"
-trace-cmd: force $(LIBTRACEEVENT_STATIC) $(LIBTRACECMD_STATIC)
+trace-cmd: force $(LIBTRACEEVENT_STATIC) $(LIBTRACECMD_STATIC) $(LIBTRACEFS_STATIC)
$(Q)$(MAKE) -C $(src)/tracecmd $(obj)/tracecmd/$@
$(LIBTRACEEVENT_SHARED): force $(obj)/lib/traceevent/plugins/traceevent_plugin_dir
@@ -292,12 +301,21 @@ $(LIBTRACECMD_STATIC): force
$(LIBTRACECMD_SHARED): force
$(Q)$(MAKE) -C $(src)/lib/trace-cmd $@
+$(LIBTRACEFS_STATIC): force
+ $(Q)$(MAKE) -C $(src)/lib/tracefs $@
+
+$(LIBTRACEFS_SHARED): force
+ $(Q)$(MAKE) -C $(src)/lib/tracefs $@
+
+
libtraceevent.so: $(LIBTRACEEVENT_SHARED)
libtraceevent.a: $(LIBTRACEEVENT_STATIC)
libtracecmd.a: $(LIBTRACECMD_STATIC)
libtracecmd.so: $(LIBTRACECMD_SHARED)
+libtracefs.a: $(LIBTRACEFS_STATIC)
+libtracefs.so: $(LIBTRACEFS_SHARED)
-libs: $(LIBTRACECMD_SHARED) $(LIBTRACEEVENT_SHARED)
+libs: $(LIBTRACECMD_SHARED) $(LIBTRACEEVENT_SHARED) $(LIBTRACEFS_SHARED)
plugins: force $(obj)/lib/traceevent/plugins/traceevent_plugin_dir $(obj)/lib/traceevent/plugins/trace_python_dir
$(Q)$(MAKE) -C $(src)/lib/traceevent/plugins
@@ -353,10 +371,12 @@ install_gui: install_cmd gui
install_libs: libs
$(Q)$(call do_install,$(LIBTRACECMD_SHARED),$(libdir_SQ)/trace-cmd)
$(Q)$(call do_install,$(LIBTRACEEVENT_SHARED),$(libdir_SQ)/traceevent)
+ $(Q)$(call do_install,$(LIBTRACEFS_SHARED),$(libdir_SQ)/tracefs)
$(Q)$(call do_install,$(src)/include/traceevent/event-parse.h,$(includedir_SQ)/traceevent)
$(Q)$(call do_install,$(src)/include/traceevent/trace-seq.h,$(includedir_SQ)/traceevent)
$(Q)$(call do_install,$(src)/include/trace-cmd/trace-cmd.h,$(includedir_SQ)/trace-cmd)
$(Q)$(call do_install,$(src)/include/trace-cmd/trace-filter-hash.h,$(includedir_SQ)/trace-cmd)
+ $(Q)$(call do_install,$(src)/include/tracefs/tracefs.h,$(includedir_SQ)/tracefs)
doc:
$(MAKE) -C $(src)/Documentation all
@@ -379,6 +399,7 @@ clean:
$(RM) tags TAGS cscope*
$(MAKE) -C $(src)/lib/traceevent clean
$(MAKE) -C $(src)/lib/trace-cmd clean
+ $(MAKE) -C $(src)/lib/tracefs clean
$(MAKE) -C $(src)/lib/traceevent/plugins clean
$(MAKE) -C $(src)/python clean
$(MAKE) -C $(src)/tracecmd clean
@@ -64,12 +64,6 @@ static inline int tracecmd_host_bigendian(void)
return *ptr == 0x01020304;
}
-/* tracecmd_get_tracing_dir must *not* be freed */
-const char *tracecmd_get_tracing_dir(void);
-
-/* tracecmd_find_tracing_dir must be freed */
-char *tracecmd_find_tracing_dir(void);
-
/* --- Opening and Reading the trace.dat file --- */
enum {
@@ -208,9 +202,6 @@ tracecmd_get_show_data_func(struct tracecmd_input *handle);
void tracecmd_set_show_data_func(struct tracecmd_input *handle,
tracecmd_show_data_func func);
-char *tracecmd_get_tracing_file(const char *name);
-void tracecmd_put_tracing_file(char *name);
-
int tracecmd_record_at_buffer_start(struct tracecmd_input *handle, struct tep_record *record);
unsigned long long tracecmd_page_ts(struct tracecmd_input *handle,
struct tep_record *record);
new file mode 100644
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+/*
+ * Copyright (C) 2019, VMware, Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
+ *
+ */
+#ifndef _TRACE_FS_H
+#define _TRACE_FS_H
+
+#include "traceevent/event-parse.h"
+
+char *tracefs_get_tracing_file(const char *name);
+void tracefs_put_tracing_file(char *name);
+
+/* tracefs_get_tracing_dir must *not* be freed */
+const char *tracefs_get_tracing_dir(void);
+
+/* tracefs_find_tracing_dir must be freed */
+char *tracefs_find_tracing_dir(void);
+
+#endif /* _TRACE_FS_H */
@@ -76,7 +76,8 @@ endif (CMAKE_BUILD_TYPE MATCHES Package)
include_directories(${KS_DIR}/src/
${KS_DIR}/build/src/
${JSONC_INCLUDE_DIR}
- ${TRACECMD_INCLUDE_DIR})
+ ${TRACECMD_INCLUDE_DIR}
+ ${TRACEFS_INCLUDE_DIR})
message("")
message(STATUS "C flags : " ${CMAKE_C_FLAGS})
@@ -6,6 +6,8 @@
# TRACEEVENT_FOUND, If false, do not try to use traceevent.
#
# TRACECMD_INCLUDE_DIR, where to find trace-cmd header.
+# TRACEFS_INCLUDE_DIR, where to find tracefs header.
+# TRACEFS_LIBRARY, the tracefs library.
# TRACECMD_LIBRARY, the trace-cmd library.
# TRACECMD_FOUND, If false, do not try to use trace-cmd.
@@ -31,12 +33,21 @@ find_path(TRACECMD_INCLUDE_DIR NAMES trace-cmd/trace-cmd.h
PATHS $ENV{TRACE_CMD}/include/
${CMAKE_SOURCE_DIR}/../include/
NO_DEFAULT_PATH)
+find_path(TRACEFS_INCLUDE_DIR NAMES tracefs/tracefs.h
+ PATHS $ENV{TRACE_CMD}/include/
+ ${CMAKE_SOURCE_DIR}/../include/
+ NO_DEFAULT_PATH)
find_library(TRACECMD_LIBRARY NAMES trace-cmd/libtracecmd.a
PATHS $ENV{TRACE_CMD}/lib/
${CMAKE_SOURCE_DIR}/../lib/
NO_DEFAULT_PATH)
+find_library(TRACEFS_LIBRARY NAMES trace-cmd/libtracefs.a
+ PATHS $ENV{TRACE_CMD}/lib/
+ ${CMAKE_SOURCE_DIR}/../lib/
+ NO_DEFAULT_PATH)
+
find_library(TRACEEVENT_LIBRARY NAMES traceevent/libtraceevent.a
PATHS $ENV{TRACE_CMD}/lib/
${CMAKE_SOURCE_DIR}/../lib/
@@ -46,7 +57,9 @@ find_library(TRACEEVENT_LIBRARY NAMES traceevent/libtraceevent.a
# search was successful "find_path" will do nothing this time.
find_program(TRACECMD_EXECUTABLE NAMES trace-cmd)
find_path(TRACECMD_INCLUDE_DIR NAMES trace-cmd/trace-cmd.h)
+find_path(TRACEFS_INCLUDE_DIR NAMES tracefs/tracefs.h)
find_library(TRACECMD_LIBRARY NAMES trace-cmd/libtracecmd.so)
+find_library(TRACEFS_LIBRARY NAMES tracefs/libtracefs.so)
find_library(TRACEEVENT_LIBRARY NAMES traceevent/libtraceevent.so)
IF (TRACECMD_INCLUDE_DIR AND TRACECMD_LIBRARY)
@@ -65,6 +78,23 @@ ELSE (TRACECMD_FOUND)
ENDIF (TRACECMD_FOUND)
+IF (TRACEFS_INCLUDE_DIR AND TRACEFS_LIBRARY)
+
+ SET(TRACEFS_FOUND TRUE)
+
+ENDIF (TRACEFS_INCLUDE_DIR AND TRACEFS_LIBRARY)
+
+IF (TRACEFS_FOUND)
+
+ MESSAGE(STATUS "Found tracefs: ${TRACEFS_LIBRARY}")
+
+ELSE (TRACEFS_FOUND)
+
+ MESSAGE(FATAL_ERROR "\nCould not find tracefs!\n")
+
+ENDIF (TRACEFS_FOUND)
+
+
IF (TRACEEVENT_LIBRARY)
SET(TRACEEVENT_FOUND TRUE)
@@ -9,6 +9,7 @@ add_library(kshark SHARED libkshark.c
target_link_libraries(kshark ${TRACEEVENT_LIBRARY}
${TRACECMD_LIBRARY}
+ ${TRACEFS_LIBRARY}
${JSONC_LIBRARY}
${CMAKE_DL_LIBS})
@@ -69,6 +70,7 @@ if (Qt5Widgets_FOUND AND Qt5Network_FOUND)
Qt5::Network
${TRACEEVENT_LIBRARY}
${TRACECMD_LIBRARY}
+ ${TRACEFS_LIBRARY}
${CMAKE_DL_LIBS})
set_target_properties(kshark-gui PROPERTIES SUFFIX ".so.${KS_VERSION_STRING}")
@@ -26,7 +26,7 @@ extern "C" {
static inline tep_handle *local_events()
{
- return tracecmd_local_events(tracecmd_get_tracing_dir());
+ return tracecmd_local_events(tracefs_get_tracing_dir());
}
/**
@@ -204,7 +204,7 @@ QStringList KsCaptureControl::_getPlugins()
QStringList pluginList;
char **all_plugins;
- all_plugins = tracecmd_local_plugins(tracecmd_get_tracing_dir());
+ all_plugins = tracecmd_local_plugins(tracefs_get_tracing_dir());
if (!all_plugins)
return pluginList;
@@ -28,6 +28,7 @@ extern "C" {
#include "trace-cmd/trace-cmd.h"
#include "trace-cmd/trace-filter-hash.h"
#include "traceevent/event-parse.h"
+#include "tracefs/tracefs.h"
// KernelShark
#include "libkshark-plugin.h"
@@ -20,6 +20,7 @@
#include <errno.h>
#include <glob.h>
+#include "tracefs.h"
#include "trace-cmd-local.h"
#include "list.h"
#include "trace-msg.h"
@@ -238,7 +239,7 @@ static tsize_t copy_file(struct tracecmd_output *handle,
static const char *find_tracing_dir(struct tracecmd_output *handle)
{
if (!handle->tracing_dir)
- handle->tracing_dir = tracecmd_find_tracing_dir();
+ handle->tracing_dir = tracefs_find_tracing_dir();
return handle->tracing_dir;
}
@@ -12,6 +12,7 @@
#include <unistd.h>
#include <errno.h>
+#include "tracefs.h"
#include "trace-cmd.h"
#include "event-utils.h"
@@ -306,7 +307,7 @@ struct tracecmd_recorder *tracecmd_create_recorder_fd(int fd, int cpu, unsigned
{
const char *tracing;
- tracing = tracecmd_get_tracing_dir();
+ tracing = tracefs_get_tracing_dir();
if (!tracing) {
errno = ENODEV;
return NULL;
@@ -319,7 +320,7 @@ struct tracecmd_recorder *tracecmd_create_recorder(const char *file, int cpu, un
{
const char *tracing;
- tracing = tracecmd_get_tracing_dir();
+ tracing = tracefs_get_tracing_dir();
if (!tracing) {
errno = ENODEV;
return NULL;
@@ -333,7 +334,7 @@ tracecmd_create_recorder_maxkb(const char *file, int cpu, unsigned flags, int ma
{
const char *tracing;
- tracing = tracecmd_get_tracing_dir();
+ tracing = tracefs_get_tracing_dir();
if (!tracing) {
errno = ENODEV;
return NULL;
@@ -23,8 +23,6 @@
#include "event-utils.h"
#define LOCAL_PLUGIN_DIR ".trace-cmd/plugins"
-#define TRACEFS_PATH "/sys/kernel/tracing"
-#define DEBUGFS_PATH "/sys/kernel/debug"
#define PROC_STACK_FILE "/proc/sys/kernel/stack_tracer_enabled"
int tracecmd_disable_sys_plugins;
@@ -33,9 +31,6 @@ static bool debug;
static FILE *logfp;
-#define _STR(x) #x
-#define STR(x) _STR(x)
-
/**
* tracecmd_set_debug - Set debug mode of the tracecmd library
* @set_debug: The new "debug" mode. If true, the tracecmd library is
@@ -147,113 +142,6 @@ void tracecmd_parse_ftrace_printk(struct tep_handle *pevent,
}
}
-static int mount_debugfs(void)
-{
- struct stat st;
- int ret;
-
- /* make sure debugfs exists */
- ret = stat(DEBUGFS_PATH, &st);
- if (ret < 0)
- return -1;
-
- ret = mount("nodev", DEBUGFS_PATH,
- "debugfs", 0, NULL);
-
- return ret;
-}
-
-static int mount_tracefs(void)
-{
- struct stat st;
- int ret;
-
- /* make sure debugfs exists */
- ret = stat(TRACEFS_PATH, &st);
- if (ret < 0)
- return -1;
-
- ret = mount("nodev", TRACEFS_PATH,
- "tracefs", 0, NULL);
-
- return ret;
-}
-
-char *tracecmd_find_tracing_dir(void)
-{
- char *debug_str = NULL;
- char fspath[PATH_MAX+1];
- char *tracing_dir;
- char type[100];
- int use_debug = 0;
- FILE *fp;
-
- if ((fp = fopen("/proc/mounts","r")) == NULL) {
- warning("Can't open /proc/mounts for read");
- return NULL;
- }
-
- while (fscanf(fp, "%*s %"
- STR(PATH_MAX)
- "s %99s %*s %*d %*d\n",
- fspath, type) == 2) {
- if (strcmp(type, "tracefs") == 0)
- break;
- if (!debug_str && strcmp(type, "debugfs") == 0) {
- debug_str = strdup(fspath);
- if (!debug_str) {
- fclose(fp);
- return NULL;
- }
- }
- }
- fclose(fp);
-
- if (strcmp(type, "tracefs") != 0) {
- if (mount_tracefs() < 0) {
- if (debug_str) {
- strncpy(fspath, debug_str, PATH_MAX);
- fspath[PATH_MAX] = 0;
- } else {
- if (mount_debugfs() < 0) {
- warning("debugfs not mounted, please mount");
- free(debug_str);
- return NULL;
- }
- strcpy(fspath, DEBUGFS_PATH);
- }
- use_debug = 1;
- } else
- strcpy(fspath, TRACEFS_PATH);
- }
- free(debug_str);
-
- if (use_debug) {
- int ret;
-
- ret = asprintf(&tracing_dir, "%s/tracing", fspath);
- if (ret < 0)
- return NULL;
- } else {
- tracing_dir = strdup(fspath);
- if (!tracing_dir)
- return NULL;
- }
-
- return tracing_dir;
-}
-
-const char *tracecmd_get_tracing_dir(void)
-{
- static const char *tracing_dir;
-
- if (tracing_dir)
- return tracing_dir;
-
- tracing_dir = tracecmd_find_tracing_dir();
- return tracing_dir;
-}
-
/* FIXME: append_file() is duplicated and could be consolidated */
static char *append_file(const char *dir, const char *name)
{
@@ -863,30 +751,6 @@ void trace_util_free_plugin_files(char **files)
free(files);
}
-char *tracecmd_get_tracing_file(const char *name)
-{
- static const char *tracing;
- char *file;
- int ret;
-
- if (!tracing) {
- tracing = tracecmd_find_tracing_dir();
- if (!tracing)
- return NULL;
- }
-
- ret = asprintf(&file, "%s/%s", tracing, name);
- if (ret < 0)
- return NULL;
-
- return file;
-}
-
-void tracecmd_put_tracing_file(char *name)
-{
- free(name);
-}
-
void __noreturn __vdie(const char *fmt, va_list ap)
{
int ret = errno;
new file mode 100644
@@ -0,0 +1,46 @@
+
+
+include $(src)/scripts/utils.mk
+
+bdir:=$(obj)/lib/tracefs
+
+DEFAULT_TARGET = $(bdir)/libtracefs.a
+
+OBJS =
+OBJS += tracefs-utils.o
+
+OBJS := $(OBJS:%.o=$(bdir)/%.o)
+DEPS := $(OBJS:$(bdir)/%.o=$(bdir)/.%.d)
+
+all: $(DEFAULT_TARGET)
+
+$(bdir):
+ @mkdir -p $(bdir)
+
+$(OBJS): | $(bdir)
+$(DEPS): | $(bdir)
+
+$(bdir)/libtracefs.a: $(OBJS)
+ $(Q)$(call do_build_static_lib)
+
+$(bdir)/libtracefs.so: $(OBJS)
+ $(Q)$(call do_compile_shared_library)
+
+$(bdir)/%.o: %.c
+ $(Q)$(call do_fpic_compile)
+
+$(DEPS): $(bdir)/.%.d: %.c
+ $(Q)$(CC) -M $(CPPFLAGS) $(CFLAGS) $< > $@
+
+$(OBJS): $(bdir)/%.o : $(bdir)/.%.d
+
+dep_includes := $(wildcard $(DEPS))
+
+ifneq ($(dep_includes),)
+ include $(dep_includes)
+endif
+
+clean:
+ $(RM) $(bdir)/*.a $(bdir)/*.so $(bdir)/*.o $(bdir)/.*.d
+
+.PHONY: clean
new file mode 100644
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+/*
+ * Copyright (C) 2019, VMware, Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
+ *
+ */
+#ifndef _TRACE_FS_LOCAL_H
+#define _TRACE_FS_LOCAL_H
+
+/* Can be overridden */
+void warning(const char *fmt, ...);
+
+#endif /* _TRACE_FS_LOCAL_H */
new file mode 100644
@@ -0,0 +1,183 @@
+// SPDX-License-Identifier: LGPL-2.1
+/*
+ * Copyright (C) 2008, 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
+ *
+ * Updates:
+ * Copyright (C) 2019, VMware, Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
+ *
+ */
+#include <stdlib.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <linux/limits.h>
+
+#include "tracefs.h"
+
+#define TRACEFS_PATH "/sys/kernel/tracing"
+#define DEBUGFS_PATH "/sys/kernel/debug"
+
+#define _STR(x) #x
+#define STR(x) _STR(x)
+
+void __attribute__((weak)) warning(const char *fmt, ...)
+{
+}
+
+static int mount_tracefs(void)
+{
+ struct stat st;
+ int ret;
+
+ /* make sure debugfs exists */
+ ret = stat(TRACEFS_PATH, &st);
+ if (ret < 0)
+ return -1;
+
+ ret = mount("nodev", TRACEFS_PATH,
+ "tracefs", 0, NULL);
+
+ return ret;
+}
+
+static int mount_debugfs(void)
+{
+ struct stat st;
+ int ret;
+
+ /* make sure debugfs exists */
+ ret = stat(DEBUGFS_PATH, &st);
+ if (ret < 0)
+ return -1;
+
+ ret = mount("nodev", DEBUGFS_PATH,
+ "debugfs", 0, NULL);
+
+ return ret;
+}
+
+/**
+ * tracefs_find_tracing_dir - Find tracing directory
+ *
+ * Returns string containing the full path to the system's tracing directory.
+ * The string must be freed by free()
+ */
+char *tracefs_find_tracing_dir(void)
+{
+ char *debug_str = NULL;
+ char fspath[PATH_MAX+1];
+ char *tracing_dir;
+ char type[100];
+ int use_debug = 0;
+ FILE *fp;
+
+ fp = fopen("/proc/mounts", "r");
+ if (!fp) {
+ warning("Can't open /proc/mounts for read");
+ return NULL;
+ }
+
+ while (fscanf(fp, "%*s %"
+ STR(PATH_MAX)
+ "s %99s %*s %*d %*d\n",
+ fspath, type) == 2) {
+ if (strcmp(type, "tracefs") == 0)
+ break;
+ if (!debug_str && strcmp(type, "debugfs") == 0) {
+ debug_str = strdup(fspath);
+ if (!debug_str) {
+ fclose(fp);
+ return NULL;
+ }
+ }
+ }
+ fclose(fp);
+
+ if (strcmp(type, "tracefs") != 0) {
+ if (mount_tracefs() < 0) {
+ if (debug_str) {
+ strncpy(fspath, debug_str, PATH_MAX);
+ fspath[PATH_MAX] = 0;
+ } else {
+ if (mount_debugfs() < 0) {
+ warning("debugfs not mounted, please mount");
+ free(debug_str);
+ return NULL;
+ }
+ strcpy(fspath, DEBUGFS_PATH);
+ }
+ use_debug = 1;
+ } else
+ strcpy(fspath, TRACEFS_PATH);
+ }
+ free(debug_str);
+
+ if (use_debug) {
+ int ret;
+
+ ret = asprintf(&tracing_dir, "%s/tracing", fspath);
+ if (ret < 0)
+ return NULL;
+ } else {
+ tracing_dir = strdup(fspath);
+ if (!tracing_dir)
+ return NULL;
+ }
+
+ return tracing_dir;
+}
+
+/**
+ * tracefs_get_tracing_dir - Get tracing directory
+ *
+ * Returns string containing the full path to the system's tracing directory.
+ * Must use tracefs_put_tracing_file() to free the returned string.
+ */
+const char *tracefs_get_tracing_dir(void)
+{
+ static const char *tracing_dir;
+
+ if (tracing_dir)
+ return tracing_dir;
+
+ tracing_dir = tracefs_find_tracing_dir();
+ return tracing_dir;
+}
+
+/**
+ * tracefs_get_tracing_file - Get tracing file
+ * @name: tracing file name
+ *
+ * Returns string containing the full path to a tracing file in
+ * the system's tracing directory.
+ *
+ * Must use tracefs_put_tracing_file() to free the returned string.
+ */
+char *tracefs_get_tracing_file(const char *name)
+{
+ static const char *tracing;
+ char *file;
+ int ret;
+
+ if (!tracing) {
+ tracing = tracefs_find_tracing_dir();
+ if (!tracing)
+ return NULL;
+ }
+
+ ret = asprintf(&file, "%s/%s", tracing, name);
+ if (ret < 0)
+ return NULL;
+
+ return file;
+}
+
+/**
+ * tracefs_put_tracing_file - Free tracing file or directory name
+ *
+ * Frees tracing file or directory, returned by
+ * tracefs_get_tracing_file() or tracefs_get_tracing_dir() APIs
+ */
+void tracefs_put_tracing_file(char *name)
+{
+ free(name);
+}
@@ -62,7 +62,7 @@ $(all_objs): | $(bdir)
$(bdir)/trace-cmd: $(ALL_OBJS)
$(Q)$(do_app_build)
-$(bdir)/trace-cmd: $(LIBTRACECMD_STATIC) $(LIBTRACEEVENT_STATIC)
+$(bdir)/trace-cmd: $(LIBTRACECMD_STATIC) $(LIBTRACEEVENT_STATIC) $(LIBTRACEFS_STATIC)
$(bdir)/%.o: %.c
$(Q)$(call do_compile)
@@ -7,6 +7,7 @@
#include <getopt.h>
#include <errno.h>
+#include "tracefs.h"
#include "trace-local.h"
void trace_check_events(int argc, char **argv)
@@ -28,7 +29,7 @@ void trace_check_events(int argc, char **argv)
break;
}
}
- tracing = tracecmd_get_tracing_dir();
+ tracing = tracefs_get_tracing_dir();
if (!tracing) {
printf("Can not find or mount tracing directory!\n"
@@ -6,6 +6,7 @@
#include <stdlib.h>
+#include "tracefs.h"
#include "trace-local.h"
@@ -35,7 +36,7 @@ void show_instance_file(struct buffer_instance *instance, const char *name)
path = get_instance_file(instance, name);
dump_file_content(path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
enum {
@@ -49,9 +50,9 @@ void show_file(const char *name)
{
char *path;
- path = tracecmd_get_tracing_file(name);
+ path = tracefs_get_tracing_file(name);
dump_file_content(path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
typedef int (*process_file_func)(char *buf, int len);
@@ -86,11 +87,11 @@ static void process_file_re(process_file_func func,
free(str);
- path = tracecmd_get_tracing_file(name);
+ path = tracefs_get_tracing_file(name);
fp = fopen(path, "r");
if (!fp)
die("reading %s", path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
do {
n = getline(&buf, &l, fp);
@@ -132,12 +133,12 @@ static char *get_event_file(const char *type, char *buf, int len)
if (!event)
die("no event found in %s\n", buf);
- path = tracecmd_get_tracing_file("events");
+ path = tracefs_get_tracing_file("events");
ret = asprintf(&file, "%s/%s/%s/%s", path, system, event, type);
if (ret < 0)
die("Failed to allocate event file %s %s", system, event);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
return file;
}
@@ -282,9 +283,9 @@ static void show_buffers(void)
char *path;
int printed = 0;
- path = tracecmd_get_tracing_file("instances");
+ path = tracefs_get_tracing_file("instances");
dir = opendir(path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
if (!dir)
die("Can not read instance directory");
@@ -39,6 +39,7 @@
#include <linux/vm_sockets.h>
#endif
+#include "tracefs.h"
#include "version.h"
#include "trace-local.h"
#include "trace-msg.h"
@@ -337,21 +338,21 @@ static void test_set_event_pid(void)
if (tested)
return;
- path = tracecmd_get_tracing_file("set_event_pid");
+ path = tracefs_get_tracing_file("set_event_pid");
ret = stat(path, &st);
if (!ret) {
have_set_event_pid = 1;
reset_save_file(path, RESET_DEFAULT_PRIO);
}
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
- path = tracecmd_get_tracing_file("options/event-fork");
+ path = tracefs_get_tracing_file("options/event-fork");
ret = stat(path, &st);
if (!ret) {
have_event_fork = 1;
reset_save_file(path, RESET_DEFAULT_PRIO);
}
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
tested = 1;
}
@@ -442,13 +443,13 @@ static int __add_all_instances(const char *tracing_dir)
*/
void add_all_instances(void)
{
- char *tracing_dir = tracecmd_find_tracing_dir();
+ char *tracing_dir = tracefs_find_tracing_dir();
if (!tracing_dir)
die("malloc");
__add_all_instances(tracing_dir);
- tracecmd_put_tracing_file(tracing_dir);
+ tracefs_put_tracing_file(tracing_dir);
}
/**
@@ -474,7 +475,7 @@ void tracecmd_stat_cpu_instance(struct buffer_instance *instance,
path = get_instance_file(instance, file);
free(file);
fd = open(path, O_RDONLY);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
if (fd < 0)
return;
@@ -772,9 +773,9 @@ static int set_ftrace(int set, int use_proc)
int ret;
/* First check if the function-trace option exists */
- path = tracecmd_get_tracing_file("options/function-trace");
+ path = tracefs_get_tracing_file("options/function-trace");
ret = set_ftrace_enable(path, set);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
/* Always enable ftrace_enable proc file when set is true */
if (ret < 0 || set || use_proc)
@@ -790,7 +791,7 @@ static int set_ftrace(int set, int use_proc)
*
* Returns the path name of the @file for the given @instance.
*
- * Must use tracecmd_put_tracing_file() to free the returned string.
+ * Must use tracefs_put_tracing_file() to free the returned string.
*/
char *
get_instance_file(struct buffer_instance *instance, const char *file)
@@ -803,10 +804,10 @@ get_instance_file(struct buffer_instance *instance, const char *file)
ret = asprintf(&buf, "instances/%s/%s", instance->name, file);
if (ret < 0)
die("Failed to allocate name for %s/%s", instance->name, file);
- path = tracecmd_get_tracing_file(buf);
+ path = tracefs_get_tracing_file(buf);
free(buf);
} else
- path = tracecmd_get_tracing_file(file);
+ path = tracefs_get_tracing_file(file);
return path;
}
@@ -825,7 +826,7 @@ get_instance_dir(struct buffer_instance *instance)
ret = asprintf(&buf, "instances/%s", instance->name);
if (ret < 0)
die("Failed to allocate for instance %s", instance->name);
- path = tracecmd_get_tracing_file(buf);
+ path = tracefs_get_tracing_file(buf);
free(buf);
return path;
@@ -868,7 +869,7 @@ write_instance_file(struct buffer_instance *instance,
ret = stat(path, &st);
if (ret == 0)
ret = write_file(path, str, type);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
return ret;
}
@@ -886,7 +887,7 @@ static void __clear_trace(struct buffer_instance *instance)
fp = fopen(path, "w");
if (!fp)
die("writing to '%s'", path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
fwrite("0", 1, 1, fp);
fclose(fp);
}
@@ -905,11 +906,11 @@ static void clear_trace(void)
char *path;
/* reset the trace */
- path = tracecmd_get_tracing_file("trace");
+ path = tracefs_get_tracing_file("trace");
fp = fopen(path, "w");
if (!fp)
die("writing to '%s'", path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
fwrite("0", 1, 1, fp);
fclose(fp);
}
@@ -956,7 +957,7 @@ static void update_ftrace_pid(const char *pid, int reset)
if (fd >= 0)
close(fd);
if (path)
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
fd = -1;
path = NULL;
return;
@@ -970,7 +971,7 @@ static void update_ftrace_pid(const char *pid, int reset)
if (fd < 0) {
if (!path)
- path = tracecmd_get_tracing_file("set_ftrace_pid");
+ path = tracefs_get_tracing_file("set_ftrace_pid");
if (!path)
return;
ret = stat(path, &st);
@@ -1601,12 +1602,12 @@ set_plugin_instance(struct buffer_instance *instance, const char *name)
* plugin for those if name is "nop".
*/
if (!strncmp(name, "nop", 3)) {
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
return;
}
die("writing to '%s'", path);
}
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
fwrite(name, 1, strlen(name), fp);
fclose(fp);
@@ -1619,11 +1620,11 @@ set_plugin_instance(struct buffer_instance *instance, const char *name)
path = get_instance_file(instance, "options/func_stack_trace");
fp = fopen(path, "w");
if (!fp) {
- tracecmd_put_tracing_file(path);
- path = tracecmd_get_tracing_file("options/func_stack_trace");
+ tracefs_put_tracing_file(path);
+ path = tracefs_get_tracing_file("options/func_stack_trace");
fp = fopen(path, "w");
if (!fp) {
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
return;
}
}
@@ -1632,7 +1633,7 @@ set_plugin_instance(struct buffer_instance *instance, const char *name)
* the original content.
*/
add_reset_file(path, "0", RESET_HIGH_PRIO);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
fwrite(&zero, 1, 1, fp);
fclose(fp);
}
@@ -1662,11 +1663,11 @@ static int set_option(const char *option)
FILE *fp;
char *path;
- path = tracecmd_get_tracing_file("trace_options");
+ path = tracefs_get_tracing_file("trace_options");
fp = fopen(path, "w");
if (!fp)
warning("writing to '%s'", path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
if (!fp)
return -1;
@@ -1693,7 +1694,7 @@ static void disable_func_stack_trace_instance(struct buffer_instance *instance)
path = get_instance_file(instance, "current_tracer");
ret = stat(path, &st);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
if (ret < 0)
return;
@@ -1727,7 +1728,7 @@ static void add_reset_options(void)
if (keep)
return;
- path = tracecmd_get_tracing_file("trace_options");
+ path = tracefs_get_tracing_file("trace_options");
content = get_file_content(path);
for (opt = options; opt; opt = opt->next) {
@@ -1790,7 +1791,7 @@ static void add_reset_options(void)
add_reset_file(path, option, RESET_DEFAULT_PRIO);
}
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
free(content);
}
@@ -1819,14 +1820,14 @@ static void set_saved_cmdlines_size(struct common_record_context *ctx)
if (!ctx->saved_cmdlines_size)
return;
- path = tracecmd_get_tracing_file("saved_cmdlines_size");
+ path = tracefs_get_tracing_file("saved_cmdlines_size");
if (!path)
goto err;
reset_save_file(path, RESET_DEFAULT_PRIO);
fd = open(path, O_WRONLY);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
if (fd < 0)
goto err;
@@ -1852,7 +1853,7 @@ static int trace_check_file_exists(struct buffer_instance *instance, char *file)
path = get_instance_file(instance, file);
ret = stat(path, &st);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
return ret < 0 ? 0 : 1;
}
@@ -1884,11 +1885,11 @@ static void old_update_events(const char *name, char update)
name = "*:*";
/* need to use old way */
- path = tracecmd_get_tracing_file("set_event");
+ path = tracefs_get_tracing_file("set_event");
fp = fopen(path, "w");
if (!fp)
die("opening '%s'", path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
/* Disable the event with "!" */
if (update == '0')
@@ -1935,12 +1936,12 @@ reset_events_instance(struct buffer_instance *instance)
die("opening to '%s'", path);
ret = write(fd, &c, 1);
close(fd);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
path = get_instance_file(instance, "events/*/filter");
globbuf.gl_offs = 0;
ret = glob(path, 0, NULL, &globbuf);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
if (ret < 0)
return;
@@ -2182,9 +2183,9 @@ static void check_tracing_enabled(void)
char *path;
if (fd < 0) {
- path = tracecmd_get_tracing_file("tracing_enabled");
+ path = tracefs_get_tracing_file("tracing_enabled");
fd = open(path, O_WRONLY | O_CLOEXEC);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
if (fd < 0)
return;
@@ -2205,7 +2206,7 @@ static int open_instance_fd(struct buffer_instance *instance,
if (is_top_instance(instance))
die("opening '%s'", path);
}
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
return fd;
}
@@ -2526,7 +2527,7 @@ static void set_mask(struct buffer_instance *instance)
close(fd);
out:
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
free(instance->cpumask);
instance->cpumask = NULL;
}
@@ -2583,7 +2584,7 @@ static void set_clock(struct buffer_instance *instance)
add_reset_file(path, str, RESET_DEFAULT_PRIO);
free(content);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
write_instance_file(instance, "trace_clock", instance->clock, "clock");
}
@@ -2598,7 +2599,7 @@ static void set_max_graph_depth(struct buffer_instance *instance, char *max_grap
path = get_instance_file(instance, "max_graph_depth");
reset_save_file(path, RESET_DEFAULT_PRIO);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
ret = write_instance_file(instance, "max_graph_depth", max_graph_depth,
NULL);
if (ret < 0)
@@ -2721,7 +2722,7 @@ static int expand_event_files(struct buffer_instance *instance,
globbuf.gl_offs = 0;
ret = glob(path, 0, NULL, &globbuf);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
free(p);
if (ret < 0)
@@ -3182,7 +3183,7 @@ create_recorder_instance_pipe(struct buffer_instance *instance,
if (instance->name)
path = get_instance_dir(instance);
else
- path = tracecmd_find_tracing_dir();
+ path = tracefs_find_tracing_dir();
if (!path)
die("malloc");
@@ -3193,7 +3194,7 @@ create_recorder_instance_pipe(struct buffer_instance *instance,
recorder = tracecmd_create_buffer_recorder_fd(brass[1], cpu, flags, path);
if (instance->name)
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
return recorder;
}
@@ -3234,7 +3235,7 @@ create_recorder_instance(struct buffer_instance *instance, const char *file, int
record = tracecmd_create_buffer_recorder_maxkb(file, cpu, recorder_flags,
path, max_kb);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
return record;
}
@@ -3287,9 +3288,9 @@ static int create_recorder(struct buffer_instance *instance, int cpu,
if (instance->name && !is_agent(instance))
path = get_instance_dir(instance);
else
- path = tracecmd_find_tracing_dir();
+ path = tracefs_find_tracing_dir();
recorder = tracecmd_create_buffer_recorder_fd(fd, cpu, flags, path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
} else {
file = get_temp_file(instance, cpu);
recorder = create_recorder_instance(instance, file, cpu, brass);
@@ -4124,7 +4125,7 @@ static int write_func_file(struct buffer_instance *instance,
close(fd);
ret = 0;
free:
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
return ret;
failed:
die("Failed to write %s to %s.\n"
@@ -4142,7 +4143,7 @@ static int functions_filtered(struct buffer_instance *instance)
path = get_instance_file(instance, "set_ftrace_filter");
fd = open(path, O_RDONLY);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
if (fd < 0) {
if (is_top_instance(instance))
warning("Can not set set_ftrace_filter");
@@ -4265,7 +4266,7 @@ static unsigned long long find_time_stamp(struct tep_handle *pevent)
int fd;
int r;
- path = tracecmd_get_tracing_file("per_cpu");
+ path = tracefs_get_tracing_file("per_cpu");
if (!path)
return 0;
@@ -4304,7 +4305,7 @@ static unsigned long long find_time_stamp(struct tep_handle *pevent)
closedir(dir);
out:
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
return ts;
}
@@ -4319,7 +4320,7 @@ static char *read_instance_file(struct buffer_instance *instance, char *file, in
path = get_instance_file(instance, file);
fd = open(path, O_RDONLY);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
if (fd < 0) {
warning("%s not found, --date ignored", file);
return NULL;
@@ -4400,9 +4401,9 @@ static char *get_date_to_ts(void)
goto out_pevent;
}
- path = tracecmd_get_tracing_file("trace_marker");
+ path = tracefs_get_tracing_file("trace_marker");
tfd = open(path, O_WRONLY);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
if (tfd < 0) {
warning("Can not open 'trace_marker', --date ignored");
goto out_pevent;
@@ -4491,7 +4492,7 @@ static void set_buffer_size_instance(struct buffer_instance *instance)
warning("Can't write to %s", path);
close(fd);
out:
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
void set_buffer_size(void)
@@ -4560,7 +4561,7 @@ static void clear_instance_triggers(struct buffer_instance *instance)
trace_event_iter_free(iter);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
static void
@@ -4621,7 +4622,7 @@ static void clear_instance_filters(struct buffer_instance *instance)
trace_event_iter_free(iter);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
static void clear_filters(void)
@@ -4687,7 +4688,7 @@ static void clear_func_filters(void)
for (i = 0; files[i]; i++) {
path = get_instance_file(instance, files[i]);
clear_func_filter(path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
}
}
@@ -4712,7 +4713,7 @@ static void make_instances(void)
} else
/* Don't delete instances that already exist */
instance->flags |= BUFFER_FL_KEEP;
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
}
@@ -4734,7 +4735,7 @@ void tracecmd_remove_instances(void)
ret = rmdir(path);
if (ret < 0)
die("rmdir %s", path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
}
@@ -5043,7 +5044,7 @@ static int test_stacktrace_trigger(struct buffer_instance *instance)
ret = 1;
close(fd);
out:
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
return ret;
}
@@ -7,6 +7,7 @@
#include <getopt.h>
#include <errno.h>
+#include "tracefs.h"
#include "trace-local.h"
enum {
@@ -157,9 +158,9 @@ void trace_show(int argc, char **argv)
if (show_name) {
char *name;
- name = tracecmd_get_tracing_file(file);
+ name = tracefs_get_tracing_file(file);
printf("%s\n", name);
- tracecmd_put_tracing_file(name);
+ tracefs_put_tracing_file(name);
}
show_file(file);
if (buffer)
@@ -12,6 +12,7 @@
#include <fcntl.h>
#include <unistd.h>
+#include "tracefs.h"
#include "trace-local.h"
static void write_file(const char *name, char *val)
@@ -20,7 +21,7 @@ static void write_file(const char *name, char *val)
int fd;
ssize_t n;
- path = tracecmd_get_tracing_file(name);
+ path = tracefs_get_tracing_file(name);
fd = open(path, O_WRONLY);
if (fd < 0)
die("writing %s", path);
@@ -29,7 +30,7 @@ static void write_file(const char *name, char *val)
if (n < 0)
die("failed to write to %s\n", path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
close(fd);
}
@@ -91,11 +92,11 @@ void trace_snapshot (int argc, char **argv)
file = cpu_path;
}
- name = tracecmd_get_tracing_file(file);
+ name = tracefs_get_tracing_file(file);
ret = stat(name, &st);
if (ret < 0)
die("Snapshot feature is not supported by this kernel");
- tracecmd_put_tracing_file(name);
+ tracefs_put_tracing_file(name);
if (!reset_snap && !take_snap && !free_snap) {
show_file(file);
@@ -15,6 +15,7 @@
#include <unistd.h>
#include <errno.h>
+#include "tracefs.h"
#include "trace-local.h"
#define PROC_FILE "/proc/sys/kernel/stack_tracer_enabled"
@@ -86,7 +87,7 @@ static void reset_trace(void)
int fd;
int n;
- path = tracecmd_get_tracing_file("stack_max_size");
+ path = tracefs_get_tracing_file("stack_max_size");
fd = open(path, O_WRONLY);
if (fd < 0)
die("writing %s", path);
@@ -95,7 +96,7 @@ static void reset_trace(void)
n = write(fd, buf, 1);
if (n < 0)
die("writing into %s", path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
close(fd);
}
@@ -116,11 +117,11 @@ static void read_trace(void)
else
printf("(stack tracer not running)\n");
- path = tracecmd_get_tracing_file("stack_trace");
+ path = tracefs_get_tracing_file("stack_trace");
fp = fopen(path, "r");
if (!fp)
die("reading to '%s'", path);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
while ((r = getline(&buf, &n, fp)) >= 0) {
/*
@@ -13,6 +13,7 @@
#include <fcntl.h>
#include <ctype.h>
+#include "tracefs.h"
#include "trace-local.h"
#ifndef BUFSIZ
@@ -32,7 +33,7 @@ static int get_instance_file_fd(struct buffer_instance *instance,
path = get_instance_file(instance, file);
fd = open(path, O_RDONLY);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
return fd;
}
@@ -383,7 +384,7 @@ static void report_events(struct buffer_instance *instance)
if (!processed && !processed_part)
printf(" (none enabled)\n");
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
static void
@@ -456,7 +457,7 @@ static void report_event_filters(struct buffer_instance *instance)
trace_event_iter_free(iter);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
static void
@@ -529,7 +530,7 @@ static void report_event_triggers(struct buffer_instance *instance)
trace_event_iter_free(iter);
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
enum func_states {
@@ -604,7 +605,7 @@ static void report_graph_funcs(struct buffer_instance *instance)
list_functions(path, "Function Graph Filter");
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
path = get_instance_file(instance, "set_graph_notrace");
if (!path)
@@ -612,7 +613,7 @@ static void report_graph_funcs(struct buffer_instance *instance)
list_functions(path, "Function Graph No Trace");
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
static void report_ftrace_filters(struct buffer_instance *instance)
@@ -625,7 +626,7 @@ static void report_ftrace_filters(struct buffer_instance *instance)
list_functions(path, "Function Filter");
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
path = get_instance_file(instance, "set_ftrace_notrace");
if (!path)
@@ -633,7 +634,7 @@ static void report_ftrace_filters(struct buffer_instance *instance)
list_functions(path, "Function No Trace");
- tracecmd_put_tracing_file(path);
+ tracefs_put_tracing_file(path);
}
static void report_buffers(struct buffer_instance *instance)
Add a skeleton for new library: libtracefs. It provides APIs for accessing files from tracefs. - Added new directories lib/tracefs include/tracefs - Integrated the libtracefs build into the trace-cmd compilation - The library is installed by "make install_libs" in: libtrasefs.so in $(libdir)/tracefs trasefs.h in $(includedir)/tracefs - Added implementation of initial APIs: char *tracefs_get_tracing_file(const char *name); void tracefs_put_tracing_file(char *name); const char *tracefs_get_tracing_dir(void); char *tracefs_find_tracing_dir(void); Link libtracefs to kernel-shark and use its API: tracefs_get_tracing_dir() Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> --- Makefile | 27 +++- include/trace-cmd/trace-cmd.h | 9 -- include/tracefs/tracefs.h | 20 +++ kernel-shark/CMakeLists.txt | 3 +- kernel-shark/build/FindTraceCmd.cmake | 30 +++++ kernel-shark/src/CMakeLists.txt | 2 + kernel-shark/src/KsCaptureDialog.cpp | 4 +- kernel-shark/src/libkshark.h | 1 + lib/trace-cmd/trace-output.c | 3 +- lib/trace-cmd/trace-recorder.c | 7 +- lib/trace-cmd/trace-util.c | 136 ------------------- lib/tracefs/Makefile | 46 +++++++ lib/tracefs/include/tracefs-local.h | 12 ++ lib/tracefs/tracefs-utils.c | 183 ++++++++++++++++++++++++++ tracecmd/Makefile | 2 +- tracecmd/trace-check-events.c | 3 +- tracecmd/trace-list.c | 19 +-- tracecmd/trace-record.c | 127 +++++++++--------- tracecmd/trace-show.c | 5 +- tracecmd/trace-snapshot.c | 9 +- tracecmd/trace-stack.c | 9 +- tracecmd/trace-stat.c | 17 +-- 22 files changed, 427 insertions(+), 247 deletions(-) create mode 100644 include/tracefs/tracefs.h create mode 100644 lib/tracefs/Makefile create mode 100644 lib/tracefs/include/tracefs-local.h create mode 100644 lib/tracefs/tracefs-utils.c