* [PATCH v8 1/9] trace-cmd library: Use output handler when copying data from input file
2022-01-26 9:51 [PATCH v8 0/9] *trace-cmd convert Tzvetomir Stoyanov (VMware)
@ 2022-01-26 9:51 ` Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` [PATCH v8 2/9] trace-cmd library: Handle version 7 files when copying headers between files Tzvetomir Stoyanov (VMware)
` (7 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: Tzvetomir Stoyanov (VMware) @ 2022-01-26 9:51 UTC (permalink / raw)
To: rostedt; +Cc: linux-trace-devel
When copying data between two trace files, use input and output
handlers, instead of raw file descriptors. Handlers take care of
file version and compression context.
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
.../include/private/trace-cmd-private.h | 3 +-
lib/trace-cmd/include/trace-cmd-local.h | 2 +
lib/trace-cmd/trace-input.c | 145 +++++++++---------
lib/trace-cmd/trace-output.c | 6 +-
4 files changed, 82 insertions(+), 74 deletions(-)
diff --git a/lib/trace-cmd/include/private/trace-cmd-private.h b/lib/trace-cmd/include/private/trace-cmd-private.h
index b5dbf56d..5bbe5898 100644
--- a/lib/trace-cmd/include/private/trace-cmd-private.h
+++ b/lib/trace-cmd/include/private/trace-cmd-private.h
@@ -191,7 +191,8 @@ int tracecmd_get_parsing_failures(struct tracecmd_input *handle);
int tracecmd_long_size(struct tracecmd_input *handle);
int tracecmd_page_size(struct tracecmd_input *handle);
int tracecmd_cpus(struct tracecmd_input *handle);
-int tracecmd_copy_headers(struct tracecmd_input *handle, int fd,
+int tracecmd_copy_headers(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle,
enum tracecmd_file_states start_state,
enum tracecmd_file_states end_state);
void tracecmd_set_flag(struct tracecmd_input *handle, int flag);
diff --git a/lib/trace-cmd/include/trace-cmd-local.h b/lib/trace-cmd/include/trace-cmd-local.h
index 3d75bd63..5ce640a6 100644
--- a/lib/trace-cmd/include/trace-cmd-local.h
+++ b/lib/trace-cmd/include/trace-cmd-local.h
@@ -61,6 +61,8 @@ out_write_section_header(struct tracecmd_output *handle, unsigned short header_i
char *description, int flags, bool option);
int out_update_section_header(struct tracecmd_output *handle, unsigned long long offset);
+long long do_write_check(struct tracecmd_output *handle, const void *data, long long size);
+
struct cpu_data_source {
int fd;
int size;
diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index 3f7971c4..5c415e94 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -4489,44 +4489,47 @@ void tracecmd_close(struct tracecmd_input *handle)
free(handle);
}
-static int read_copy_size8(struct tracecmd_input *handle, int fd, unsigned long long *size)
+static int read_copy_size8(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle, unsigned long long *size)
{
/* read size */
- if (do_read_check(handle, size, 8))
+ if (do_read_check(in_handle, size, 8))
return -1;
- if (__do_write_check(fd, size, 8))
+ if (do_write_check(out_handle, size, 8))
return -1;
- *size = tep_read_number(handle->pevent, size, 8);
+ *size = tep_read_number(in_handle->pevent, size, 8);
return 0;
}
-static int read_copy_size4(struct tracecmd_input *handle, int fd, unsigned int *size)
+static int read_copy_size4(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle,
+ unsigned int *size)
{
/* read size */
- if (do_read_check(handle, size, 4))
+ if (do_read_check(in_handle, size, 4))
return -1;
- if (__do_write_check(fd, size, 4))
+ if (do_write_check(out_handle, size, 4))
return -1;
- *size = tep_read_number(handle->pevent, size, 4);
+ *size = tep_read_number(in_handle->pevent, size, 4);
return 0;
}
-static int read_copy_data(struct tracecmd_input *handle,
- unsigned long long size, int fd)
+static int read_copy_data(struct tracecmd_input *in_handle,
+ unsigned long long size,
+ struct tracecmd_output *out_handle)
{
char *buf;
buf = malloc(size);
if (!buf)
return -1;
- if (do_read_check(handle, buf, size))
+ if (do_read_check(in_handle, buf, size))
goto failed_read;
- if (__do_write_check(fd, buf, size))
+ if (do_write_check(out_handle, buf, size))
goto failed_read;
free(buf);
@@ -4538,65 +4541,66 @@ static int read_copy_data(struct tracecmd_input *handle,
return -1;
}
-static int copy_header_files(struct tracecmd_input *handle, int fd)
+static int copy_header_files(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle)
{
unsigned long long size;
- if (handle->file_state != TRACECMD_FILE_HEADERS - 1)
+ if (in_handle->file_state != TRACECMD_FILE_HEADERS - 1)
return -1;
/* "header_page" */
- if (read_copy_data(handle, 12, fd) < 0)
+ if (read_copy_data(in_handle, 12, out_handle) < 0)
return -1;
- if (read_copy_size8(handle, fd, &size) < 0)
+ if (read_copy_size8(in_handle, out_handle, &size) < 0)
return -1;
- if (read_copy_data(handle, size, fd) < 0)
+ if (read_copy_data(in_handle, size, out_handle) < 0)
return -1;
/* "header_event" */
- if (read_copy_data(handle, 13, fd) < 0)
+ if (read_copy_data(in_handle, 13, out_handle) < 0)
return -1;
- if (read_copy_size8(handle, fd, &size) < 0)
+ if (read_copy_size8(in_handle, out_handle, &size) < 0)
return -1;
- if (read_copy_data(handle, size, fd) < 0)
+ if (read_copy_data(in_handle, size, out_handle) < 0)
return -1;
- handle->file_state = TRACECMD_FILE_HEADERS;
+ in_handle->file_state = TRACECMD_FILE_HEADERS;
return 0;
}
-static int copy_ftrace_files(struct tracecmd_input *handle, int fd)
+static int copy_ftrace_files(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle)
{
unsigned long long size;
unsigned int count;
unsigned int i;
- if (handle->file_state != TRACECMD_FILE_FTRACE_EVENTS - 1)
+ if (in_handle->file_state != TRACECMD_FILE_FTRACE_EVENTS - 1)
return -1;
- if (read_copy_size4(handle, fd, &count) < 0)
+ if (read_copy_size4(in_handle, out_handle, &count) < 0)
return -1;
for (i = 0; i < count; i++) {
- if (read_copy_size8(handle, fd, &size) < 0)
+ if (read_copy_size8(in_handle, out_handle, &size) < 0)
return -1;
- if (read_copy_data(handle, size, fd) < 0)
+ if (read_copy_data(in_handle, size, out_handle) < 0)
return -1;
}
- handle->file_state = TRACECMD_FILE_FTRACE_EVENTS;
+ in_handle->file_state = TRACECMD_FILE_FTRACE_EVENTS;
return 0;
}
-static int copy_event_files(struct tracecmd_input *handle, int fd)
+static int copy_event_files(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle)
{
unsigned long long size;
char *system;
@@ -4604,103 +4608,103 @@ static int copy_event_files(struct tracecmd_input *handle, int fd)
unsigned int count;
unsigned int i,x;
- if (handle->file_state != TRACECMD_FILE_ALL_EVENTS - 1)
+ if (in_handle->file_state != TRACECMD_FILE_ALL_EVENTS - 1)
return -1;
- if (read_copy_size4(handle, fd, &systems) < 0)
+ if (read_copy_size4(in_handle, out_handle, &systems) < 0)
return -1;
for (i = 0; i < systems; i++) {
- system = read_string(handle);
+ system = read_string(in_handle);
if (!system)
return -1;
- if (__do_write_check(fd, system, strlen(system) + 1)) {
+ if (do_write_check(out_handle, system, strlen(system) + 1)) {
free(system);
return -1;
}
free(system);
- if (read_copy_size4(handle, fd, &count) < 0)
+ if (read_copy_size4(in_handle, out_handle, &count) < 0)
return -1;
for (x=0; x < count; x++) {
- if (read_copy_size8(handle, fd, &size) < 0)
+ if (read_copy_size8(in_handle, out_handle, &size) < 0)
return -1;
- if (read_copy_data(handle, size, fd) < 0)
+ if (read_copy_data(in_handle, size, out_handle) < 0)
return -1;
}
}
- handle->file_state = TRACECMD_FILE_ALL_EVENTS;
+ in_handle->file_state = TRACECMD_FILE_ALL_EVENTS;
return 0;
}
-static int copy_proc_kallsyms(struct tracecmd_input *handle, int fd)
+static int copy_proc_kallsyms(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle)
{
unsigned int size;
- if (handle->file_state != TRACECMD_FILE_KALLSYMS - 1)
+ if (in_handle->file_state != TRACECMD_FILE_KALLSYMS - 1)
return -1;
- if (read_copy_size4(handle, fd, &size) < 0)
+ if (read_copy_size4(in_handle, out_handle, &size) < 0)
return -1;
if (!size)
return 0; /* OK? */
- if (read_copy_data(handle, size, fd) < 0)
+ if (read_copy_data(in_handle, size, out_handle) < 0)
return -1;
- handle->file_state = TRACECMD_FILE_KALLSYMS;
+ in_handle->file_state = TRACECMD_FILE_KALLSYMS;
return 0;
}
-static int copy_ftrace_printk(struct tracecmd_input *handle, int fd)
+static int copy_ftrace_printk(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle)
{
unsigned int size;
- if (handle->file_state != TRACECMD_FILE_PRINTK - 1)
+ if (in_handle->file_state != TRACECMD_FILE_PRINTK - 1)
return -1;
- if (read_copy_size4(handle, fd, &size) < 0)
+ if (read_copy_size4(in_handle, out_handle, &size) < 0)
return -1;
if (!size)
return 0; /* OK? */
- if (read_copy_data(handle, size, fd) < 0)
+ if (read_copy_data(in_handle, size, out_handle) < 0)
return -1;
- handle->file_state = TRACECMD_FILE_PRINTK;
+ in_handle->file_state = TRACECMD_FILE_PRINTK;
return 0;
}
-static int copy_command_lines(struct tracecmd_input *handle, int fd)
+static int copy_command_lines(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle)
{
unsigned long long size;
- if (handle->file_state != TRACECMD_FILE_CMD_LINES - 1)
+ if (in_handle->file_state != TRACECMD_FILE_CMD_LINES - 1)
return -1;
- if (read_copy_size8(handle, fd, &size) < 0)
+ if (read_copy_size8(in_handle, out_handle, &size) < 0)
return -1;
if (!size)
return 0; /* OK? */
- if (read_copy_data(handle, size, fd) < 0)
+ if (read_copy_data(in_handle, size, out_handle) < 0)
return -1;
- handle->file_state = TRACECMD_FILE_CMD_LINES;
+ in_handle->file_state = TRACECMD_FILE_CMD_LINES;
return 0;
}
/**
* tracecmd_copy_headers - Copy headers from a tracecmd_input handle to a file descriptor
- * @handle: input handle for the trace.dat file to copy from.
- * @fd: The file descriptor to copy to.
+ * @in_handle: input handle for the trace.dat file to copy from.
+ * @out_handle: output handle to the trace.dat file to copy to.
* @start_state: The file state to start copying from (zero for the beginnig)
* @end_state: The file state to stop at (zero for up to cmdlines)
*
@@ -4711,7 +4715,8 @@ static int copy_command_lines(struct tracecmd_input *handle, int fd)
* NOTE: The input handle is also modified, and ends at the end
* state as well.
*/
-int tracecmd_copy_headers(struct tracecmd_input *handle, int fd,
+int tracecmd_copy_headers(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle,
enum tracecmd_file_states start_state,
enum tracecmd_file_states end_state)
{
@@ -4729,71 +4734,71 @@ int tracecmd_copy_headers(struct tracecmd_input *handle, int fd,
if (end_state < TRACECMD_FILE_HEADERS)
return 0;
- if (handle->file_state >= start_state) {
+ if (in_handle->file_state >= start_state) {
/* Set the handle to just before the start state */
- sec = section_open(handle, TRACECMD_OPTION_HEADER_INFO);
+ sec = section_open(in_handle, TRACECMD_OPTION_HEADER_INFO);
if (!sec)
return -1;
/* Now that the file handle has moved, change its state */
- handle->file_state = TRACECMD_FILE_INIT;
+ in_handle->file_state = TRACECMD_FILE_INIT;
}
/* Try to bring the input up to the start state - 1 */
- ret = tracecmd_read_headers(handle, start_state - 1);
+ ret = tracecmd_read_headers(in_handle, start_state - 1);
if (sec)
- section_close(handle, sec);
+ section_close(in_handle, sec);
if (ret < 0)
goto out;
switch (start_state) {
case TRACECMD_FILE_HEADERS:
- ret = copy_header_files(handle, fd);
+ ret = copy_header_files(in_handle, out_handle);
if (ret < 0)
goto out;
/* fallthrough */
case TRACECMD_FILE_FTRACE_EVENTS:
/* handle's state is now updating with the copies */
- if (end_state <= handle->file_state)
+ if (end_state <= in_handle->file_state)
return 0;
- ret = copy_ftrace_files(handle, fd);
+ ret = copy_ftrace_files(in_handle, out_handle);
if (ret < 0)
goto out;
/* fallthrough */
case TRACECMD_FILE_ALL_EVENTS:
- if (end_state <= handle->file_state)
+ if (end_state <= in_handle->file_state)
return 0;
- ret = copy_event_files(handle, fd);
+ ret = copy_event_files(in_handle, out_handle);
if (ret < 0)
goto out;
/* fallthrough */
case TRACECMD_FILE_KALLSYMS:
- if (end_state <= handle->file_state)
+ if (end_state <= in_handle->file_state)
return 0;
- ret = copy_proc_kallsyms(handle, fd);
+ ret = copy_proc_kallsyms(in_handle, out_handle);
if (ret < 0)
goto out;
/* fallthrough */
case TRACECMD_FILE_PRINTK:
- if (end_state <= handle->file_state)
+ if (end_state <= in_handle->file_state)
return 0;
- ret = copy_ftrace_printk(handle, fd);
+ ret = copy_ftrace_printk(in_handle, out_handle);
if (ret < 0)
goto out;
/* fallthrough */
case TRACECMD_FILE_CMD_LINES:
- if (end_state <= handle->file_state)
+ if (end_state <= in_handle->file_state)
return 0;
- ret = copy_command_lines(handle, fd);
+ ret = copy_command_lines(in_handle, out_handle);
default:
break;
}
diff --git a/lib/trace-cmd/trace-output.c b/lib/trace-cmd/trace-output.c
index 780fb481..9b31e264 100644
--- a/lib/trace-cmd/trace-output.c
+++ b/lib/trace-cmd/trace-output.c
@@ -99,8 +99,8 @@ struct list_event_system {
static int write_options(struct tracecmd_output *handle);
static int save_string_section(struct tracecmd_output *handle, bool compress);
-static stsize_t
-do_write_check(struct tracecmd_output *handle, const void *data, tsize_t size)
+__hidden long long
+do_write_check(struct tracecmd_output *handle, const void *data, long long size)
{
if (handle->do_compress)
return tracecmd_compress_buffer_write(handle->compress, data, size);
@@ -2618,7 +2618,7 @@ struct tracecmd_output *tracecmd_copy(struct tracecmd_input *ihandle,
goto out_free;
output_write_init(handle);
- if (tracecmd_copy_headers(ihandle, handle->fd, 0, 0) < 0)
+ if (tracecmd_copy_headers(ihandle, handle, 0, 0) < 0)
goto out_free;
handle->file_state = tracecmd_get_file_state(ihandle);
--
2.34.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v8 2/9] trace-cmd library: Handle version 7 files when copying headers between files
2022-01-26 9:51 [PATCH v8 0/9] *trace-cmd convert Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` [PATCH v8 1/9] trace-cmd library: Use output handler when copying data from input file Tzvetomir Stoyanov (VMware)
@ 2022-01-26 9:51 ` Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` [PATCH v8 3/9] trace-cmd library: Copy CPU count between trace files Tzvetomir Stoyanov (VMware)
` (6 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: Tzvetomir Stoyanov (VMware) @ 2022-01-26 9:51 UTC (permalink / raw)
To: rostedt; +Cc: linux-trace-devel
When copying header data between trace files, handle the file versions.
Internal library functions for copying these headers are fixed to work
with trace file version 7:
copy_header_files
copy_ftrace_files
copy_event_files
copy_proc_kallsyms
copy_command_lines
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
lib/trace-cmd/include/trace-cmd-local.h | 3 +
lib/trace-cmd/trace-input.c | 222 ++++++++++++++++++++----
lib/trace-cmd/trace-output.c | 10 ++
lib/trace-cmd/trace-util.c | 9 +-
4 files changed, 212 insertions(+), 32 deletions(-)
diff --git a/lib/trace-cmd/include/trace-cmd-local.h b/lib/trace-cmd/include/trace-cmd-local.h
index 5ce640a6..4154e76e 100644
--- a/lib/trace-cmd/include/trace-cmd-local.h
+++ b/lib/trace-cmd/include/trace-cmd-local.h
@@ -50,6 +50,9 @@ int out_uncompress_block(struct tracecmd_output *handle);
int out_compression_start(struct tracecmd_output *handle, bool compress);
int out_compression_end(struct tracecmd_output *handle, bool compress);
void out_compression_reset(struct tracecmd_output *handle, bool compress);
+bool out_check_compression(struct tracecmd_output *handle);
+
+void out_set_file_state(struct tracecmd_output *handle, int new_state);
unsigned long long out_copy_fd_compress(struct tracecmd_output *handle,
int fd, unsigned long long max,
unsigned long long *write_size);
diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index 5c415e94..09888b35 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -4541,164 +4541,324 @@ static int read_copy_data(struct tracecmd_input *in_handle,
return -1;
}
+
+static bool check_in_state(struct tracecmd_input *handle, int new_state)
+{
+ return check_file_state(handle->file_version, handle->file_state, new_state);
+}
+
static int copy_header_files(struct tracecmd_input *in_handle,
struct tracecmd_output *out_handle)
{
+ bool compress = out_check_compression(out_handle);
+ struct file_section *sec;
+ unsigned long long offset;
unsigned long long size;
- if (in_handle->file_state != TRACECMD_FILE_HEADERS - 1)
+ if (!check_in_state(in_handle, TRACECMD_FILE_HEADERS) ||
+ !check_out_state(out_handle, TRACECMD_FILE_HEADERS))
+ return -1;
+
+ sec = section_open(in_handle, TRACECMD_OPTION_HEADER_INFO);
+ if (!sec)
return -1;
+ offset = out_write_section_header(out_handle, TRACECMD_OPTION_HEADER_INFO,
+ "headers", TRACECMD_SEC_FL_COMPRESS, true);
+ out_compression_start(out_handle, compress);
+
/* "header_page" */
if (read_copy_data(in_handle, 12, out_handle) < 0)
- return -1;
+ goto error;
if (read_copy_size8(in_handle, out_handle, &size) < 0)
- return -1;
+ goto error;
if (read_copy_data(in_handle, size, out_handle) < 0)
- return -1;
+ goto error;
/* "header_event" */
if (read_copy_data(in_handle, 13, out_handle) < 0)
- return -1;
+ goto error;
if (read_copy_size8(in_handle, out_handle, &size) < 0)
- return -1;
+ goto error;
if (read_copy_data(in_handle, size, out_handle) < 0)
- return -1;
+ goto error;
in_handle->file_state = TRACECMD_FILE_HEADERS;
+ if (out_compression_end(out_handle, compress))
+ goto error;
+
+ out_set_file_state(out_handle, in_handle->file_state);
+ section_close(in_handle, sec);
+
+ if (out_update_section_header(out_handle, offset))
+ goto error;
return 0;
+error:
+ out_compression_reset(out_handle, compress);
+ section_close(in_handle, sec);
+ return -1;
}
static int copy_ftrace_files(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle)
{
+ bool compress = out_check_compression(out_handle);
+ struct file_section *sec;
+ unsigned long long offset;
unsigned long long size;
unsigned int count;
unsigned int i;
- if (in_handle->file_state != TRACECMD_FILE_FTRACE_EVENTS - 1)
+ if (!check_in_state(in_handle, TRACECMD_FILE_FTRACE_EVENTS) ||
+ !check_out_state(out_handle, TRACECMD_FILE_FTRACE_EVENTS))
return -1;
- if (read_copy_size4(in_handle, out_handle, &count) < 0)
+ sec = section_open(in_handle, TRACECMD_OPTION_FTRACE_EVENTS);
+ if (!sec)
return -1;
+ offset = out_write_section_header(out_handle, TRACECMD_OPTION_FTRACE_EVENTS,
+ "ftrace events", TRACECMD_SEC_FL_COMPRESS, true);
+
+ out_compression_start(out_handle, compress);
+
+ if (read_copy_size4(in_handle, out_handle, &count) < 0)
+ goto error;
for (i = 0; i < count; i++) {
if (read_copy_size8(in_handle, out_handle, &size) < 0)
- return -1;
+ goto error;
if (read_copy_data(in_handle, size, out_handle) < 0)
- return -1;
+ goto error;
}
in_handle->file_state = TRACECMD_FILE_FTRACE_EVENTS;
+ if (out_compression_end(out_handle, compress))
+ goto error;
+
+ out_set_file_state(out_handle, in_handle->file_state);
+
+ section_close(in_handle, sec);
+
+ if (out_update_section_header(out_handle, offset))
+ goto error;
return 0;
+error:
+ out_compression_reset(out_handle, compress);
+ section_close(in_handle, sec);
+ return -1;
}
static int copy_event_files(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle)
{
+ bool compress = out_check_compression(out_handle);
+ struct file_section *sec;
+ unsigned long long offset;
unsigned long long size;
char *system;
unsigned int systems;
unsigned int count;
unsigned int i,x;
- if (in_handle->file_state != TRACECMD_FILE_ALL_EVENTS - 1)
+ if (!check_in_state(in_handle, TRACECMD_FILE_ALL_EVENTS) ||
+ !check_out_state(out_handle, TRACECMD_FILE_ALL_EVENTS))
return -1;
- if (read_copy_size4(in_handle, out_handle, &systems) < 0)
+ sec = section_open(in_handle, TRACECMD_OPTION_EVENT_FORMATS);
+ if (!sec)
return -1;
+ offset = out_write_section_header(out_handle, TRACECMD_OPTION_EVENT_FORMATS,
+ "events format", TRACECMD_SEC_FL_COMPRESS, true);
+
+ out_compression_start(out_handle, compress);
+
+ if (read_copy_size4(in_handle, out_handle, &systems) < 0)
+ goto error;
for (i = 0; i < systems; i++) {
system = read_string(in_handle);
if (!system)
- return -1;
+ goto error;
if (do_write_check(out_handle, system, strlen(system) + 1)) {
free(system);
- return -1;
+ goto error;
}
free(system);
if (read_copy_size4(in_handle, out_handle, &count) < 0)
- return -1;
+ goto error;
for (x=0; x < count; x++) {
if (read_copy_size8(in_handle, out_handle, &size) < 0)
- return -1;
+ goto error;
if (read_copy_data(in_handle, size, out_handle) < 0)
- return -1;
+ goto error;
}
}
in_handle->file_state = TRACECMD_FILE_ALL_EVENTS;
+ if (out_compression_end(out_handle, compress))
+ goto error;
+
+ out_set_file_state(out_handle, in_handle->file_state);
+
+ section_close(in_handle, sec);
+
+ if (out_update_section_header(out_handle, offset))
+ goto error;
return 0;
+error:
+ out_compression_reset(out_handle, compress);
+ section_close(in_handle, sec);
+ return -1;
}
static int copy_proc_kallsyms(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle)
{
+ bool compress = out_check_compression(out_handle);
+ struct file_section *sec;
+ unsigned long long offset;
unsigned int size;
- if (in_handle->file_state != TRACECMD_FILE_KALLSYMS - 1)
+ if (!check_in_state(in_handle, TRACECMD_FILE_KALLSYMS) ||
+ !check_out_state(out_handle, TRACECMD_FILE_KALLSYMS))
return -1;
- if (read_copy_size4(in_handle, out_handle, &size) < 0)
+ sec = section_open(in_handle, TRACECMD_OPTION_KALLSYMS);
+ if (!sec)
return -1;
+ offset = out_write_section_header(out_handle, TRACECMD_OPTION_KALLSYMS,
+ "kallsyms", TRACECMD_SEC_FL_COMPRESS, true);
+
+ out_compression_start(out_handle, compress);
+ if (read_copy_size4(in_handle, out_handle, &size) < 0)
+ goto error;
+
if (!size)
- return 0; /* OK? */
+ goto out; /* OK? */
if (read_copy_data(in_handle, size, out_handle) < 0)
- return -1;
-
+ goto error;
+out:
in_handle->file_state = TRACECMD_FILE_KALLSYMS;
+ if (out_compression_end(out_handle, compress))
+ goto error;
+
+ out_set_file_state(out_handle, in_handle->file_state);
+
+ section_close(in_handle, sec);
+
+ if (out_update_section_header(out_handle, offset))
+ goto error;
return 0;
+error:
+ out_compression_reset(out_handle, compress);
+ section_close(in_handle, sec);
+ return -1;
}
static int copy_ftrace_printk(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle)
{
+ bool compress = out_check_compression(out_handle);
+ struct file_section *sec;
+ unsigned long long offset;
unsigned int size;
- if (in_handle->file_state != TRACECMD_FILE_PRINTK - 1)
+ if (!check_in_state(in_handle, TRACECMD_FILE_PRINTK) ||
+ !check_out_state(out_handle, TRACECMD_FILE_PRINTK))
return -1;
- if (read_copy_size4(in_handle, out_handle, &size) < 0)
+ sec = section_open(in_handle, TRACECMD_OPTION_PRINTK);
+ if (!sec)
return -1;
+
+ offset = out_write_section_header(out_handle, TRACECMD_OPTION_PRINTK,
+ "printk", TRACECMD_SEC_FL_COMPRESS, true);
+
+ out_compression_start(out_handle, compress);
+
+ if (read_copy_size4(in_handle, out_handle, &size) < 0)
+ goto error;
+
if (!size)
- return 0; /* OK? */
+ goto out; /* OK? */
if (read_copy_data(in_handle, size, out_handle) < 0)
- return -1;
+ goto error;
+out:
in_handle->file_state = TRACECMD_FILE_PRINTK;
+ if (out_compression_end(out_handle, compress))
+ goto error;
+
+ out_set_file_state(out_handle, in_handle->file_state);
+
+ section_close(in_handle, sec);
+
+ if (out_update_section_header(out_handle, offset))
+ goto error;
return 0;
+error:
+ out_compression_reset(out_handle, compress);
+ section_close(in_handle, sec);
+ return -1;
}
static int copy_command_lines(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle)
{
+ bool compress = out_check_compression(out_handle);
+ struct file_section *sec;
+ unsigned long long offset;
unsigned long long size;
- if (in_handle->file_state != TRACECMD_FILE_CMD_LINES - 1)
+ if (!check_in_state(in_handle, TRACECMD_FILE_CMD_LINES) ||
+ !check_out_state(out_handle, TRACECMD_FILE_CMD_LINES))
return -1;
- if (read_copy_size8(in_handle, out_handle, &size) < 0)
+ sec = section_open(in_handle, TRACECMD_OPTION_CMDLINES);
+ if (!sec)
return -1;
+ offset = out_write_section_header(out_handle, TRACECMD_OPTION_CMDLINES,
+ "command lines", TRACECMD_SEC_FL_COMPRESS, true);
+
+ out_compression_start(out_handle, compress);
+
+ if (read_copy_size8(in_handle, out_handle, &size) < 0)
+ goto error;
+
if (!size)
- return 0; /* OK? */
+ goto out; /* OK? */
if (read_copy_data(in_handle, size, out_handle) < 0)
- return -1;
+ goto error;
+out:
in_handle->file_state = TRACECMD_FILE_CMD_LINES;
+ if (out_compression_end(out_handle, compress))
+ goto error;
+
+ out_set_file_state(out_handle, in_handle->file_state);
+
+ section_close(in_handle, sec);
+
+ if (out_update_section_header(out_handle, offset))
+ goto error;
return 0;
+error:
+ out_compression_reset(out_handle, compress);
+ section_close(in_handle, sec);
+ return -1;
}
/**
diff --git a/lib/trace-cmd/trace-output.c b/lib/trace-cmd/trace-output.c
index 9b31e264..164c66a8 100644
--- a/lib/trace-cmd/trace-output.c
+++ b/lib/trace-cmd/trace-output.c
@@ -2631,11 +2631,21 @@ out_free:
return NULL;
}
+__hidden void out_set_file_state(struct tracecmd_output *handle, int new_state)
+{
+ handle->file_state = new_state;
+}
+
__hidden bool check_out_state(struct tracecmd_output *handle, int new_state)
{
return check_file_state(handle->file_version, handle->file_state, new_state);
}
+__hidden bool out_check_compression(struct tracecmd_output *handle)
+{
+ return (handle->compress != NULL);
+}
+
/**
* tracecmd_get_out_file_version - return the trace.dat file version
* @handle: output handle for the trace.dat file
diff --git a/lib/trace-cmd/trace-util.c b/lib/trace-cmd/trace-util.c
index 06071f6c..f5c77e91 100644
--- a/lib/trace-cmd/trace-util.c
+++ b/lib/trace-cmd/trace-util.c
@@ -647,6 +647,13 @@ static void __attribute__((destructor)) tracecmd_lib_free(void)
__hidden bool check_file_state(unsigned long file_version, int current_state, int new_state)
{
+ if (file_version >= FILE_VERSION_SECTIONS) {
+ if (current_state < TRACECMD_FILE_INIT)
+ return false;
+
+ return true;
+ }
+
switch (new_state) {
case TRACECMD_FILE_HEADERS:
case TRACECMD_FILE_FTRACE_EVENTS:
@@ -659,7 +666,7 @@ __hidden bool check_file_state(unsigned long file_version, int current_state, in
return true;
break;
case TRACECMD_FILE_OPTIONS:
- if (current_state == (new_state - 1))
+ if (file_version < FILE_VERSION_SECTIONS && current_state == TRACECMD_FILE_CPU_COUNT)
return true;
break;
case TRACECMD_FILE_CPU_LATENCY:
--
2.34.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v8 3/9] trace-cmd library: Copy CPU count between trace files
2022-01-26 9:51 [PATCH v8 0/9] *trace-cmd convert Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` [PATCH v8 1/9] trace-cmd library: Use output handler when copying data from input file Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` [PATCH v8 2/9] trace-cmd library: Handle version 7 files when copying headers between files Tzvetomir Stoyanov (VMware)
@ 2022-01-26 9:51 ` Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` [PATCH v8 4/9] trace-cmd library: New API to copy buffer description " Tzvetomir Stoyanov (VMware)
` (5 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: Tzvetomir Stoyanov (VMware) @ 2022-01-26 9:51 UTC (permalink / raw)
To: rostedt; +Cc: linux-trace-devel
The tracecmd_copy_headers() API should be able to copy CPU count also,
as it is part of the headers.
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
lib/trace-cmd/trace-input.c | 42 +++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index 09888b35..9afc6559 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -4861,6 +4861,35 @@ error:
return -1;
}
+static int copy_cpu_count(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle)
+{
+ unsigned int cpus;
+
+ if (!check_in_state(in_handle, TRACECMD_FILE_CPU_COUNT) ||
+ !check_out_state(out_handle, TRACECMD_FILE_CPU_COUNT))
+ return -1;
+
+ if (!HAS_SECTIONS(in_handle)) {
+ if (read4(in_handle, &cpus))
+ return -1;
+ } else {
+ cpus = in_handle->max_cpu;
+ }
+
+ if (tracecmd_get_out_file_version(out_handle) < FILE_VERSION_SECTIONS) {
+ cpus = tep_read_number(in_handle->pevent, &cpus, 4);
+ if (do_write_check(out_handle, &cpus, 4))
+ return -1;
+ } else {
+ tracecmd_add_option(out_handle, TRACECMD_OPTION_CPUCOUNT, sizeof(int), &cpus);
+ }
+
+ in_handle->file_state = TRACECMD_FILE_CPU_COUNT;
+ out_set_file_state(out_handle, in_handle->file_state);
+
+ return 0;
+}
+
/**
* tracecmd_copy_headers - Copy headers from a tracecmd_input handle to a file descriptor
* @in_handle: input handle for the trace.dat file to copy from.
@@ -4959,6 +4988,19 @@ int tracecmd_copy_headers(struct tracecmd_input *in_handle,
return 0;
ret = copy_command_lines(in_handle, out_handle);
+ if (ret < 0)
+ goto out;
+
+ /* fallthrough */
+ case TRACECMD_FILE_CPU_COUNT:
+ if (end_state <= in_handle->file_state)
+ return 0;
+
+ ret = copy_cpu_count(in_handle, out_handle);
+ if (ret < 0)
+ goto out;
+
+ /* fallthrough */
default:
break;
}
--
2.34.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v8 4/9] trace-cmd library: New API to copy buffer description between trace files
2022-01-26 9:51 [PATCH v8 0/9] *trace-cmd convert Tzvetomir Stoyanov (VMware)
` (2 preceding siblings ...)
2022-01-26 9:51 ` [PATCH v8 3/9] trace-cmd library: Copy CPU count between trace files Tzvetomir Stoyanov (VMware)
@ 2022-01-26 9:51 ` Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` [PATCH v8 5/9] trace-cmd library: New API to copy options " Tzvetomir Stoyanov (VMware)
` (4 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: Tzvetomir Stoyanov (VMware) @ 2022-01-26 9:51 UTC (permalink / raw)
To: rostedt; +Cc: linux-trace-devel
A new library API is introduced, to copy buffers description between
trace files:
tracecmd_copy_buffer_descr()
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
lib/trace-cmd/include/private/trace-cmd-private.h | 2 ++
lib/trace-cmd/trace-input.c | 14 ++++++++++++++
2 files changed, 16 insertions(+)
diff --git a/lib/trace-cmd/include/private/trace-cmd-private.h b/lib/trace-cmd/include/private/trace-cmd-private.h
index 5bbe5898..07430d37 100644
--- a/lib/trace-cmd/include/private/trace-cmd-private.h
+++ b/lib/trace-cmd/include/private/trace-cmd-private.h
@@ -195,6 +195,8 @@ int tracecmd_copy_headers(struct tracecmd_input *in_handle,
struct tracecmd_output *out_handle,
enum tracecmd_file_states start_state,
enum tracecmd_file_states end_state);
+int tracecmd_copy_buffer_descr(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle);
void tracecmd_set_flag(struct tracecmd_input *handle, int flag);
void tracecmd_clear_flag(struct tracecmd_input *handle, int flag);
unsigned long tracecmd_get_flags(struct tracecmd_input *handle);
diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index 9afc6559..5f2b9d85 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -5009,6 +5009,20 @@ int tracecmd_copy_headers(struct tracecmd_input *in_handle,
return ret < 0 ? -1 : 0;
}
+int tracecmd_copy_buffer_descr(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle)
+{
+ int i;
+
+ if (tracecmd_get_out_file_version(out_handle) >= FILE_VERSION_SECTIONS)
+ return 0;
+
+ for (i = 0; i < in_handle->nr_buffers; i++)
+ tracecmd_add_buffer_info(out_handle, in_handle->buffers[i].name, 0);
+
+ return tracecmd_write_buffer_info(out_handle);
+}
+
/**
* tracecmd_record_at_buffer_start - return true if record is first on subbuffer
* @handle: input handle for the trace.dat file
--
2.34.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v8 5/9] trace-cmd library: New API to copy options between trace files
2022-01-26 9:51 [PATCH v8 0/9] *trace-cmd convert Tzvetomir Stoyanov (VMware)
` (3 preceding siblings ...)
2022-01-26 9:51 ` [PATCH v8 4/9] trace-cmd library: New API to copy buffer description " Tzvetomir Stoyanov (VMware)
@ 2022-01-26 9:51 ` Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` [PATCH v8 6/9] trace-cmd library: New API to copy trace data " Tzvetomir Stoyanov (VMware)
` (3 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: Tzvetomir Stoyanov (VMware) @ 2022-01-26 9:51 UTC (permalink / raw)
To: rostedt; +Cc: linux-trace-devel
A new library API is introduced, to copy options between trace files:
tracecmd_copy_options()
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
.../include/private/trace-cmd-private.h | 3 +
lib/trace-cmd/include/trace-cmd-local.h | 2 +
lib/trace-cmd/trace-input.c | 158 ++++++++++++++++++
lib/trace-cmd/trace-output.c | 32 ++++
4 files changed, 195 insertions(+)
diff --git a/lib/trace-cmd/include/private/trace-cmd-private.h b/lib/trace-cmd/include/private/trace-cmd-private.h
index 07430d37..98b1864e 100644
--- a/lib/trace-cmd/include/private/trace-cmd-private.h
+++ b/lib/trace-cmd/include/private/trace-cmd-private.h
@@ -197,6 +197,8 @@ int tracecmd_copy_headers(struct tracecmd_input *in_handle,
enum tracecmd_file_states end_state);
int tracecmd_copy_buffer_descr(struct tracecmd_input *in_handle,
struct tracecmd_output *out_handle);
+int tracecmd_copy_options(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle);
void tracecmd_set_flag(struct tracecmd_input *handle, int flag);
void tracecmd_clear_flag(struct tracecmd_input *handle, int flag);
unsigned long tracecmd_get_flags(struct tracecmd_input *handle);
@@ -342,6 +344,7 @@ int tracecmd_append_buffer_cpu_data(struct tracecmd_output *handle,
const char *name, int cpus, char * const *cpu_data_files);
struct tracecmd_output *tracecmd_get_output_handle_fd(int fd);
unsigned long tracecmd_get_out_file_version(struct tracecmd_output *handle);
+unsigned long long tracecmd_get_out_file_offset(struct tracecmd_output *handle);
/* --- Reading the Fly Recorder Trace --- */
diff --git a/lib/trace-cmd/include/trace-cmd-local.h b/lib/trace-cmd/include/trace-cmd-local.h
index 4154e76e..85420fb1 100644
--- a/lib/trace-cmd/include/trace-cmd-local.h
+++ b/lib/trace-cmd/include/trace-cmd-local.h
@@ -53,6 +53,8 @@ void out_compression_reset(struct tracecmd_output *handle, bool compress);
bool out_check_compression(struct tracecmd_output *handle);
void out_set_file_state(struct tracecmd_output *handle, int new_state);
+int out_save_options_offset(struct tracecmd_output *handle,
+ unsigned long long start);
unsigned long long out_copy_fd_compress(struct tracecmd_output *handle,
int fd, unsigned long long max,
unsigned long long *write_size);
diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index 5f2b9d85..2af3ecc0 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -5023,6 +5023,164 @@ int tracecmd_copy_buffer_descr(struct tracecmd_input *in_handle,
return tracecmd_write_buffer_info(out_handle);
}
+static int copy_options_recursive(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle)
+{
+ unsigned short id, flags = 0;
+ unsigned short option, en2;
+ unsigned long long next;
+ unsigned int size, en4;
+ bool skip;
+
+ for (;;) {
+ if (do_read_check(in_handle, &option, 2))
+ return -1;
+
+ en2 = tep_read_number(in_handle->pevent, &option, 2);
+
+ if (en2 == TRACECMD_OPTION_DONE && !HAS_SECTIONS(in_handle))
+ return 0;
+
+ /* next 4 bytes is the size of the option */
+ if (do_read_check(in_handle, &size, 4))
+ return -1;
+
+ en4 = tep_read_number(in_handle->pevent, &size, 4);
+ if (en2 == TRACECMD_OPTION_DONE) {
+ /* option done v7 */
+ if (en4 < 8)
+ return -1;
+
+ if (read8(in_handle, &next))
+ return -1;
+
+ if (!next)
+ break;
+
+ if (do_lseek(in_handle, next, SEEK_SET) == (off64_t)-1)
+ return -1;
+
+ if (read_section_header(in_handle, &id, &flags, NULL, NULL))
+ return -1;
+
+ if (id != TRACECMD_OPTION_DONE)
+ return -1;
+
+ if (flags & TRACECMD_SEC_FL_COMPRESS && in_uncompress_block(in_handle))
+ return -1;
+
+ return copy_options_recursive(in_handle, out_handle);
+ }
+ /* Do not copy these, as they have file specific offsets */
+ switch (en2) {
+ case TRACECMD_OPTION_BUFFER:
+ case TRACECMD_OPTION_BUFFER_TEXT:
+ case TRACECMD_OPTION_HEADER_INFO:
+ case TRACECMD_OPTION_FTRACE_EVENTS:
+ case TRACECMD_OPTION_EVENT_FORMATS:
+ case TRACECMD_OPTION_KALLSYMS:
+ case TRACECMD_OPTION_PRINTK:
+ case TRACECMD_OPTION_CMDLINES:
+ skip = true;
+ break;
+ default:
+ skip = false;
+ break;
+ }
+ if (skip) {
+ do_lseek(in_handle, en4, SEEK_CUR);
+ continue;
+ }
+ if (do_write_check(out_handle, &option, 2))
+ return -1;
+
+ if (do_write_check(out_handle, &size, 4))
+ return -1;
+
+ if (read_copy_data(in_handle, en4, out_handle))
+ return -1;
+ }
+
+ return 0;
+}
+
+static int copy_options(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle)
+{
+ unsigned long long offset, start;
+ unsigned short id, en2, flags = 0;
+ int tmp;
+
+ if (HAS_SECTIONS(in_handle)) {
+ if (read_section_header(in_handle, &id, &flags, NULL, NULL))
+ return -1;
+
+ if (id != TRACECMD_OPTION_DONE)
+ return -1;
+
+ if (flags & TRACECMD_SEC_FL_COMPRESS && in_uncompress_block(in_handle))
+ return -1;
+ }
+ start = tracecmd_get_out_file_offset(out_handle);
+ if (tracecmd_get_out_file_version(out_handle) < FILE_VERSION_SECTIONS) {
+ if (do_write_check(out_handle, "options ", 10))
+ return -1;
+ }
+
+ offset = out_write_section_header(out_handle, TRACECMD_OPTION_DONE, "options", 0, false);
+
+ if (copy_options_recursive(in_handle, out_handle))
+ goto error;
+
+ id = TRACECMD_OPTION_DONE;
+ en2 = tep_read_number(in_handle->pevent, &id, 2);
+ if (do_write_check(out_handle, &en2, 2))
+ goto error;
+
+ if (tracecmd_get_out_file_version(out_handle) < FILE_VERSION_SECTIONS) {
+ out_save_options_offset(out_handle, start);
+ } else {
+ tmp = 8;
+ if (do_write_check(out_handle, &tmp, 4))
+ goto error;
+
+ out_save_options_offset(out_handle, start);
+ start = 0;
+ if (do_write_check(out_handle, &start, 8))
+ goto error;
+ }
+ out_update_section_header(out_handle, offset);
+ if (flags & TRACECMD_SEC_FL_COMPRESS)
+ in_uncompress_reset(in_handle);
+ in_handle->file_state = TRACECMD_FILE_OPTIONS;
+ out_set_file_state(out_handle, in_handle->file_state);
+ /* Append local options */
+ return tracecmd_append_options(out_handle);
+
+error:
+ if (flags & TRACECMD_SEC_FL_COMPRESS)
+ in_uncompress_reset(in_handle);
+ return 0;
+}
+
+int tracecmd_copy_options(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle)
+{
+ if (!check_in_state(in_handle, TRACECMD_FILE_OPTIONS) ||
+ !check_out_state(out_handle, TRACECMD_FILE_OPTIONS))
+ return -1;
+
+ if (!in_handle->options_start)
+ return 0;
+
+ if (lseek64(in_handle->fd, in_handle->options_start, SEEK_SET) == (off64_t)-1)
+ return -1;
+
+ if (copy_options(in_handle, out_handle) < 0)
+ return -1;
+
+ return 0;
+}
+
/**
* tracecmd_record_at_buffer_start - return true if record is first on subbuffer
* @handle: input handle for the trace.dat file
diff --git a/lib/trace-cmd/trace-output.c b/lib/trace-cmd/trace-output.c
index 164c66a8..a8c4d7d9 100644
--- a/lib/trace-cmd/trace-output.c
+++ b/lib/trace-cmd/trace-output.c
@@ -2646,6 +2646,33 @@ __hidden bool out_check_compression(struct tracecmd_output *handle)
return (handle->compress != NULL);
}
+__hidden int out_save_options_offset(struct tracecmd_output *handle, unsigned long long start)
+{
+ unsigned long long new, en8;
+
+ if (HAS_SECTIONS(handle)) {
+ /* Append to the previous options section, if any */
+ if (!handle->options_start)
+ return -1;
+
+ new = do_lseek(handle, 0, SEEK_CUR);
+ if (do_lseek(handle, handle->options_start, SEEK_SET) == (off64_t)-1)
+ return -1;
+
+ en8 = convert_endian_8(handle, start);
+ if (do_write_check(handle, &en8, 8))
+ return -1;
+
+ handle->options_start = new;
+ if (do_lseek(handle, new, SEEK_SET) == (off64_t)-1)
+ return -1;
+ } else {
+ handle->options_start = start;
+ }
+
+ return 0;
+}
+
/**
* tracecmd_get_out_file_version - return the trace.dat file version
* @handle: output handle for the trace.dat file
@@ -2654,3 +2681,8 @@ unsigned long tracecmd_get_out_file_version(struct tracecmd_output *handle)
{
return handle->file_version;
}
+
+unsigned long long tracecmd_get_out_file_offset(struct tracecmd_output *handle)
+{
+ return do_lseek(handle, 0, SEEK_CUR);
+}
--
2.34.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v8 6/9] trace-cmd library: New API to copy trace data between trace files
2022-01-26 9:51 [PATCH v8 0/9] *trace-cmd convert Tzvetomir Stoyanov (VMware)
` (4 preceding siblings ...)
2022-01-26 9:51 ` [PATCH v8 5/9] trace-cmd library: New API to copy options " Tzvetomir Stoyanov (VMware)
@ 2022-01-26 9:51 ` Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` [PATCH v8 7/9] trace-cmd library: Avoid memory leak when setting trace clock Tzvetomir Stoyanov (VMware)
` (2 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: Tzvetomir Stoyanov (VMware) @ 2022-01-26 9:51 UTC (permalink / raw)
To: rostedt; +Cc: linux-trace-devel
A new library API is introduced, to copy trace data between trace files:
tracecmd_copy_trace_data()
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
.../include/private/trace-cmd-private.h | 2 +
lib/trace-cmd/include/trace-cmd-local.h | 6 +
lib/trace-cmd/trace-input.c | 178 ++++++++++++++++++
lib/trace-cmd/trace-output.c | 40 ++++
4 files changed, 226 insertions(+)
diff --git a/lib/trace-cmd/include/private/trace-cmd-private.h b/lib/trace-cmd/include/private/trace-cmd-private.h
index 98b1864e..32957305 100644
--- a/lib/trace-cmd/include/private/trace-cmd-private.h
+++ b/lib/trace-cmd/include/private/trace-cmd-private.h
@@ -199,6 +199,8 @@ int tracecmd_copy_buffer_descr(struct tracecmd_input *in_handle,
struct tracecmd_output *out_handle);
int tracecmd_copy_options(struct tracecmd_input *in_handle,
struct tracecmd_output *out_handle);
+int tracecmd_copy_trace_data(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle);
void tracecmd_set_flag(struct tracecmd_input *handle, int flag);
void tracecmd_clear_flag(struct tracecmd_input *handle, int flag);
unsigned long tracecmd_get_flags(struct tracecmd_input *handle);
diff --git a/lib/trace-cmd/include/trace-cmd-local.h b/lib/trace-cmd/include/trace-cmd-local.h
index 85420fb1..48f179d6 100644
--- a/lib/trace-cmd/include/trace-cmd-local.h
+++ b/lib/trace-cmd/include/trace-cmd-local.h
@@ -68,6 +68,11 @@ int out_update_section_header(struct tracecmd_output *handle, unsigned long long
long long do_write_check(struct tracecmd_output *handle, const void *data, long long size);
+struct tracecmd_option *
+out_add_buffer_option(struct tracecmd_output *handle, const char *name,
+ unsigned short id, unsigned long long data_offset,
+ int cpus, struct data_file_write *cpu_data);
+
struct cpu_data_source {
int fd;
int size;
@@ -76,6 +81,7 @@ struct cpu_data_source {
int out_write_cpu_data(struct tracecmd_output *handle, int cpus,
struct cpu_data_source *data, const char *buff_name);
+int out_write_emty_cpu_data(struct tracecmd_output *handle, int cpus);
off64_t msg_lseek(struct tracecmd_msg_handle *msg_handle, off_t offset, int whence);
unsigned long long get_last_option_offset(struct tracecmd_input *handle);
unsigned int get_meta_strings_size(struct tracecmd_input *handle);
diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index 2af3ecc0..60ac839c 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -5181,6 +5181,184 @@ int tracecmd_copy_options(struct tracecmd_input *in_handle,
return 0;
}
+static int copy_trace_latency(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle, const char *buf_name)
+{
+ unsigned long long wsize;
+ unsigned long long offset;
+ int fd;
+
+ if (tracecmd_get_out_file_version(out_handle) < FILE_VERSION_SECTIONS &&
+ do_write_check(out_handle, "latency ", 10))
+ return -1;
+
+ offset = tracecmd_get_out_file_offset(out_handle);
+
+ if (tracecmd_get_out_file_version(out_handle) >= FILE_VERSION_SECTIONS &&
+ !out_add_buffer_option(out_handle, buf_name, TRACECMD_OPTION_BUFFER_TEXT, offset, 0, NULL))
+ return -1;
+
+ offset = out_write_section_header(out_handle, TRACECMD_OPTION_BUFFER_TEXT,
+ "buffer latency", TRACECMD_SEC_FL_COMPRESS, false);
+
+ if (in_handle->latz.fd >= 0)
+ fd = in_handle->latz.fd;
+ else
+ fd = in_handle->fd;
+
+ if (!out_copy_fd_compress(out_handle, fd, 0, &wsize))
+ return -1;
+
+ if (out_update_section_header(out_handle, offset))
+ return -1;
+
+ out_set_file_state(out_handle, TRACECMD_FILE_CPU_LATENCY);
+ return 0;
+}
+
+static int copy_trace_flyrecord_data(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle, const char *buff_name)
+{
+ struct cpu_data_source *data;
+ int total_size = 0;
+ int cpus;
+ int ret;
+ int i, j;
+
+ if (tracecmd_get_out_file_version(out_handle) < FILE_VERSION_SECTIONS)
+ cpus = in_handle->max_cpu;
+ else
+ cpus = in_handle->cpus;
+
+ data = calloc(cpus, sizeof(struct cpu_data_source));
+ if (!data)
+ return -1;
+
+ for (i = 0; i < in_handle->cpus; i++) {
+ j = in_handle->cpu_data[i].cpu;
+ data[j].size = in_handle->cpu_data[i].file_size;
+ total_size += data[j].size;
+ if (in_handle->cpu_data[i].compress.fd >= 0) {
+ data[j].fd = in_handle->cpu_data[i].compress.fd;
+ data[j].offset = 0;
+ } else {
+ data[j].fd = in_handle->fd;
+ data[j].offset = in_handle->cpu_data[i].file_offset;
+ }
+ }
+ if (total_size || tracecmd_get_out_file_version(out_handle) < FILE_VERSION_SECTIONS)
+ ret = out_write_cpu_data(out_handle, cpus, data, buff_name);
+ else
+ ret = 0;
+ free(data);
+
+ return ret;
+}
+
+static int copy_flyrecord_buffer(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle, int index)
+{
+ struct tracecmd_input *instance;
+ const char *name;
+ int ret;
+
+ name = tracecmd_buffer_instance_name(in_handle, index);
+ if (!name)
+ return -1;
+
+ instance = tracecmd_buffer_instance_handle(in_handle, index);
+ if (!instance)
+ return -1;
+
+ if (!tracecmd_get_quiet(out_handle) && *name)
+ fprintf(stderr, "\nBuffer: %s\n\n", name);
+
+ if (in_handle->buffers[index].latency)
+ ret = copy_trace_latency(in_handle, out_handle, name);
+ else
+ ret = copy_trace_flyrecord_data(instance, out_handle, name);
+ tracecmd_close(instance);
+
+ return ret;
+}
+
+static int copy_trace_data_from_v6(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle)
+{
+ char buf[10];
+ int ret;
+ int i;
+
+ if (do_read_check(in_handle, buf, 10))
+ return -1;
+
+ if (strncmp(buf, "latency", 7) == 0)
+ in_handle->file_state = TRACECMD_FILE_CPU_LATENCY;
+ else if (strncmp(buf, "flyrecord", 9) == 0)
+ in_handle->file_state = TRACECMD_FILE_CPU_FLYRECORD;
+
+ tracecmd_init_data(in_handle);
+ tracecmd_set_out_clock(out_handle, in_handle->trace_clock);
+
+ if (in_handle->file_state == TRACECMD_FILE_CPU_LATENCY)
+ return copy_trace_latency(in_handle, out_handle, "");
+
+ /* top instance */
+ ret = copy_trace_flyrecord_data(in_handle, out_handle, "");
+ if (ret)
+ return ret;
+
+ for (i = 0; i < in_handle->nr_buffers; i++)
+ copy_flyrecord_buffer(in_handle, out_handle, i);
+
+ return 0;
+}
+
+static int copy_trace_data_from_v7(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle)
+{
+ int ret = 0;
+ int i;
+
+ /* Force using temporary files for trace data decompression */
+ in_handle->read_zpage = false;
+ tracecmd_init_data(in_handle);
+ tracecmd_set_out_clock(out_handle, in_handle->trace_clock);
+
+ /* copy top buffer */
+ if (in_handle->top_buffer.latency)
+ ret = copy_trace_latency(in_handle, out_handle, in_handle->top_buffer.name);
+ else if (in_handle->top_buffer.cpus)
+ ret = copy_trace_flyrecord_data(in_handle, out_handle,
+ in_handle->top_buffer.name);
+ else if (tracecmd_get_out_file_version(out_handle) < FILE_VERSION_SECTIONS)
+ ret = out_write_emty_cpu_data(out_handle, in_handle->max_cpu);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < in_handle->nr_buffers; i++)
+ copy_flyrecord_buffer(in_handle, out_handle, i);
+
+ return 0;
+}
+
+__hidden int tracecmd_copy_trace_data(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle)
+{
+ int ret;
+
+ if (!check_in_state(in_handle, TRACECMD_FILE_CPU_FLYRECORD) ||
+ !check_out_state(out_handle, TRACECMD_FILE_CPU_FLYRECORD))
+ return -1;
+
+ if (in_handle->file_version < FILE_VERSION_SECTIONS)
+ ret = copy_trace_data_from_v6(in_handle, out_handle);
+ else
+ ret = copy_trace_data_from_v7(in_handle, out_handle);
+
+ return ret;
+}
+
/**
* tracecmd_record_at_buffer_start - return true if record is first on subbuffer
* @handle: input handle for the trace.dat file
diff --git a/lib/trace-cmd/trace-output.c b/lib/trace-cmd/trace-output.c
index a8c4d7d9..b54c68fe 100644
--- a/lib/trace-cmd/trace-output.c
+++ b/lib/trace-cmd/trace-output.c
@@ -2298,6 +2298,46 @@ static int update_buffer_cpu_offset_v6(struct tracecmd_output *handle,
return 0;
}
+__hidden int out_write_emty_cpu_data(struct tracecmd_output *handle, int cpus)
+{
+ unsigned long long zero = 0;
+ char *clock;
+ int ret;
+ int i;
+
+ if (HAS_SECTIONS(handle))
+ return 0;
+
+ ret = handle->file_state == TRACECMD_FILE_CPU_FLYRECORD ? 0 :
+ check_file_state(handle->file_version,
+ handle->file_state,
+ TRACECMD_FILE_CPU_FLYRECORD);
+ if (ret < 0) {
+ tracecmd_warning("Cannot write trace data into the file, unexpected state 0x%X",
+ handle->file_state);
+ return ret;
+ }
+
+ if (do_write_check(handle, "flyrecord", 10))
+ return -1;
+
+ for (i = 0; i < cpus; i++) {
+ /* Write 0 for trace data offset and size */
+ if (do_write_check(handle, &zero, 8))
+ return -1;
+
+ if (do_write_check(handle, &zero, 8))
+ return -1;
+ }
+ clock = get_clock(handle);
+ if (clock && save_clock(handle, clock))
+ return -1;
+
+ handle->file_state = TRACECMD_FILE_CPU_FLYRECORD;
+ return 0;
+}
+
+
__hidden int out_write_cpu_data(struct tracecmd_output *handle,
int cpus, struct cpu_data_source *data, const char *buff_name)
{
--
2.34.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v8 7/9] trace-cmd library: Avoid memory leak when setting trace clock
2022-01-26 9:51 [PATCH v8 0/9] *trace-cmd convert Tzvetomir Stoyanov (VMware)
` (5 preceding siblings ...)
2022-01-26 9:51 ` [PATCH v8 6/9] trace-cmd library: New API to copy trace data " Tzvetomir Stoyanov (VMware)
@ 2022-01-26 9:51 ` Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` [PATCH v8 8/9] trace-cmd library: Extend tracecmd_copy() API Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` [PATCH v8 9/9] trace-cmd: Add new subcommand "convert" Tzvetomir Stoyanov (VMware)
8 siblings, 0 replies; 10+ messages in thread
From: Tzvetomir Stoyanov (VMware) @ 2022-01-26 9:51 UTC (permalink / raw)
To: rostedt; +Cc: linux-trace-devel
The API for setting a trace clock to a input handle did not check if the
clock is already set:
tracecmd_set_out_clock()
This could cause a memory leak, if the clock is already set - the old
clock string is overwritten. The old clock should be freed before
setting the new one.
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
lib/trace-cmd/trace-output.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/trace-cmd/trace-output.c b/lib/trace-cmd/trace-output.c
index b54c68fe..c1ba8a52 100644
--- a/lib/trace-cmd/trace-output.c
+++ b/lib/trace-cmd/trace-output.c
@@ -227,8 +227,10 @@ void tracecmd_set_quiet(struct tracecmd_output *handle, bool set_quiet)
void tracecmd_set_out_clock(struct tracecmd_output *handle, const char *clock)
{
- if (handle && clock)
+ if (handle && clock) {
+ free(handle->trace_clock);
handle->trace_clock = strdup(clock);
+ }
}
/**
--
2.34.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v8 8/9] trace-cmd library: Extend tracecmd_copy() API
2022-01-26 9:51 [PATCH v8 0/9] *trace-cmd convert Tzvetomir Stoyanov (VMware)
` (6 preceding siblings ...)
2022-01-26 9:51 ` [PATCH v8 7/9] trace-cmd library: Avoid memory leak when setting trace clock Tzvetomir Stoyanov (VMware)
@ 2022-01-26 9:51 ` Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` [PATCH v8 9/9] trace-cmd: Add new subcommand "convert" Tzvetomir Stoyanov (VMware)
8 siblings, 0 replies; 10+ messages in thread
From: Tzvetomir Stoyanov (VMware) @ 2022-01-26 9:51 UTC (permalink / raw)
To: rostedt; +Cc: linux-trace-devel
The tracecmd_copy() API is used to copy data between trace files.
Extended it to support copying data between files from different
versions. Added also functionality to copy all sections between the
files.
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
.../include/private/trace-cmd-private.h | 5 ++-
lib/trace-cmd/trace-output.c | 41 ++++++++++++++++---
tracecmd/trace-restore.c | 2 +-
tracecmd/trace-split.c | 2 +-
4 files changed, 41 insertions(+), 9 deletions(-)
diff --git a/lib/trace-cmd/include/private/trace-cmd-private.h b/lib/trace-cmd/include/private/trace-cmd-private.h
index 32957305..d229b264 100644
--- a/lib/trace-cmd/include/private/trace-cmd-private.h
+++ b/lib/trace-cmd/include/private/trace-cmd-private.h
@@ -335,8 +335,9 @@ int tracecmd_write_meta_strings(struct tracecmd_output *handle);
int tracecmd_append_options(struct tracecmd_output *handle);
void tracecmd_output_close(struct tracecmd_output *handle);
void tracecmd_output_free(struct tracecmd_output *handle);
-struct tracecmd_output *tracecmd_copy(struct tracecmd_input *ihandle,
- const char *file);
+struct tracecmd_output *tracecmd_copy(struct tracecmd_input *ihandle, const char *file,
+ enum tracecmd_file_states state, int file_version,
+ const char *compression);
int tracecmd_write_cpu_data(struct tracecmd_output *handle,
int cpus, char * const *cpu_data_files, const char *buff_name);
diff --git a/lib/trace-cmd/trace-output.c b/lib/trace-cmd/trace-output.c
index c1ba8a52..e7915aa6 100644
--- a/lib/trace-cmd/trace-output.c
+++ b/lib/trace-cmd/trace-output.c
@@ -2642,14 +2642,23 @@ struct tracecmd_output *tracecmd_output_create(const char *output_file)
* tracecmd_copy - copy the headers of one trace.dat file for another
* @ihandle: input handle of the trace.dat file to copy
* @file: the trace.dat file to create
+ * @state: what data will be copied from the source handle
+ * @file_version: version of the output file
+ * @compression: compression of the output file, can be one of:
+ * NULL - inherit compression from the input file
+ * "any" - compress the output file with the best available algorithm
+ * "none" - do not compress the output file
+ * algorithm_name - compress the output file with specified algorithm
*
* Reads the header information and creates a new trace data file
* with the same characteristics (events and all) and returns
* tracecmd_output handle to this new file.
*/
-struct tracecmd_output *tracecmd_copy(struct tracecmd_input *ihandle,
- const char *file)
+struct tracecmd_output *tracecmd_copy(struct tracecmd_input *ihandle, const char *file,
+ enum tracecmd_file_states state, int file_version,
+ const char *compression)
{
+ enum tracecmd_file_states fstate;
struct tracecmd_output *handle;
handle = tracecmd_output_create(file);
@@ -2658,18 +2667,40 @@ struct tracecmd_output *tracecmd_copy(struct tracecmd_input *ihandle,
if (tracecmd_output_set_from_input(handle, ihandle))
goto out_free;
+
+ if (file_version >= FILE_VERSION_MIN)
+ tracecmd_output_set_version(handle, file_version);
+
+ if (compression && tracecmd_output_set_compression(handle, compression))
+ goto out_free;
+
output_write_init(handle);
+ fstate = state > TRACECMD_FILE_CPU_COUNT ? TRACECMD_FILE_CPU_COUNT : state;
+ if (tracecmd_copy_headers(ihandle, handle, 0, fstate) < 0)
+ goto out_free;
- if (tracecmd_copy_headers(ihandle, handle, 0, 0) < 0)
+ if (tracecmd_copy_buffer_descr(ihandle, handle) < 0)
goto out_free;
- handle->file_state = tracecmd_get_file_state(ihandle);
+ if (state >= TRACECMD_FILE_OPTIONS &&
+ tracecmd_copy_options(ihandle, handle) < 0)
+ goto out_free;
+
+ if (state >= TRACECMD_FILE_CPU_LATENCY &&
+ tracecmd_copy_trace_data(ihandle, handle) < 0)
+ goto out_free;
+
+ if (HAS_SECTIONS(handle))
+ tracecmd_write_options(handle);
/* The file is all ready to have cpu data attached */
return handle;
out_free:
- tracecmd_output_close(handle);
+ if (handle)
+ tracecmd_output_close(handle);
+
+ unlink(file);
return NULL;
}
diff --git a/tracecmd/trace-restore.c b/tracecmd/trace-restore.c
index 23a7f4af..5bf29c52 100644
--- a/tracecmd/trace-restore.c
+++ b/tracecmd/trace-restore.c
@@ -147,7 +147,7 @@ void trace_restore (int argc, char **argv)
if (tracecmd_read_headers(ihandle, TRACECMD_FILE_CMD_LINES) < 0)
die("error reading file %s headers", input);
- handle = tracecmd_copy(ihandle, output);
+ handle = tracecmd_copy(ihandle, output, TRACECMD_FILE_CMD_LINES, 0, NULL);
tracecmd_close(ihandle);
} else {
handle = tracecmd_output_create(output);
diff --git a/tracecmd/trace-split.c b/tracecmd/trace-split.c
index e4a0c3b3..83c5402c 100644
--- a/tracecmd/trace-split.c
+++ b/tracecmd/trace-split.c
@@ -348,7 +348,7 @@ static double parse_file(struct tracecmd_input *handle,
dir = dirname(output);
base = basename(output);
- ohandle = tracecmd_copy(handle, output_file);
+ ohandle = tracecmd_copy(handle, output_file, TRACECMD_FILE_CMD_LINES, 0, NULL);
cpus = tracecmd_cpus(handle);
cpu_data = malloc(sizeof(*cpu_data) * cpus);
--
2.34.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v8 9/9] trace-cmd: Add new subcommand "convert"
2022-01-26 9:51 [PATCH v8 0/9] *trace-cmd convert Tzvetomir Stoyanov (VMware)
` (7 preceding siblings ...)
2022-01-26 9:51 ` [PATCH v8 8/9] trace-cmd library: Extend tracecmd_copy() API Tzvetomir Stoyanov (VMware)
@ 2022-01-26 9:51 ` Tzvetomir Stoyanov (VMware)
8 siblings, 0 replies; 10+ messages in thread
From: Tzvetomir Stoyanov (VMware) @ 2022-01-26 9:51 UTC (permalink / raw)
To: rostedt; +Cc: linux-trace-devel
There is a need to convert trace files between different versions. A new
"trace-cmd convert" subcommand is introduced, which reads an input
trace file and copies to an output trace file. Both files can be from
different versions.
trace-cmd convert -i <input file> -o <output file> --file-version <ver>
--compression <compression>
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
tracecmd/Makefile | 1 +
tracecmd/include/trace-local.h | 2 +
tracecmd/trace-cmd.c | 1 +
tracecmd/trace-convert.c | 109 +++++++++++++++++++++++++++++++++
tracecmd/trace-usage.c | 13 ++++
5 files changed, 126 insertions(+)
create mode 100644 tracecmd/trace-convert.c
diff --git a/tracecmd/Makefile b/tracecmd/Makefile
index b7a23dc4..56742f0a 100644
--- a/tracecmd/Makefile
+++ b/tracecmd/Makefile
@@ -36,6 +36,7 @@ TRACE_CMD_OBJS += trace-usage.o
TRACE_CMD_OBJS += trace-dump.o
TRACE_CMD_OBJS += trace-clear.o
TRACE_CMD_OBJS += trace-vm.o
+TRACE_CMD_OBJS += trace-convert.o
ifeq ($(VSOCK_DEFINED), 1)
TRACE_CMD_OBJS += trace-agent.o
diff --git a/tracecmd/include/trace-local.h b/tracecmd/include/trace-local.h
index e9a0aea8..13dab44c 100644
--- a/tracecmd/include/trace-local.h
+++ b/tracecmd/include/trace-local.h
@@ -110,6 +110,8 @@ void trace_usage(int argc, char **argv);
void trace_dump(int argc, char **argv);
+void trace_convert(int argc, char **argv);
+
int trace_record_agent(struct tracecmd_msg_handle *msg_handle,
int cpus, int *fds,
int argc, char **argv, bool use_fifos,
diff --git a/tracecmd/trace-cmd.c b/tracecmd/trace-cmd.c
index 9fc126e4..a83a8d0b 100644
--- a/tracecmd/trace-cmd.c
+++ b/tracecmd/trace-cmd.c
@@ -133,6 +133,7 @@ struct command commands[] = {
{"list", trace_list},
{"help", trace_usage},
{"dump", trace_dump},
+ {"convert", trace_convert},
{"-h", trace_usage},
};
diff --git a/tracecmd/trace-convert.c b/tracecmd/trace-convert.c
new file mode 100644
index 00000000..88935dc7
--- /dev/null
+++ b/tracecmd/trace-convert.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021, VMware, Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
+ */
+#include <stdlib.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "trace-local.h"
+#include "trace-cmd.h"
+#include "trace-cmd-private.h"
+
+static void convert_file(const char *in, const char *out, int file_version, char *compr)
+{
+ struct tracecmd_input *ihandle;
+ struct tracecmd_output *ohandle;
+
+ ihandle = tracecmd_open_head(in, 0);
+ if (!ihandle)
+ die("error reading %s", in);
+
+ ohandle = tracecmd_copy(ihandle, out, TRACECMD_FILE_CPU_FLYRECORD, file_version, compr);
+ if (!ohandle)
+ die("error writing %s", out);
+
+ tracecmd_output_close(ohandle);
+ tracecmd_close(ihandle);
+}
+
+enum {
+ OPT_file_version = 254,
+ OPT_compression = 255,
+};
+
+void trace_convert(int argc, char **argv)
+{
+ char *input_file = NULL;
+ char *output_file = NULL;
+ char *compression = NULL;
+ int file_version = tracecmd_default_file_version();
+ int c;
+
+ if (argc < 2)
+ usage(argv);
+
+ if (strcmp(argv[1], "convert") != 0)
+ usage(argv);
+
+ for (;;) {
+ int option_index = 0;
+ static struct option long_options[] = {
+ {"compression", required_argument, NULL, OPT_compression},
+ {"file-version", required_argument, NULL, OPT_file_version},
+ {"help", no_argument, NULL, '?'},
+ {NULL, 0, NULL, 0}
+ };
+
+ c = getopt_long (argc-1, argv+1, "+hi:o:", long_options, &option_index);
+ if (c == -1)
+ break;
+ switch (c) {
+ case 'i':
+ if (input_file)
+ die("Only one input file is supported, %s already set",
+ input_file);
+ input_file = optarg;
+ break;
+ case 'o':
+ if (output_file)
+ die("Only one output file is supported, %s already set",
+ output_file);
+ output_file = optarg;
+ break;
+ case OPT_compression:
+ if (strcmp(optarg, "any") && strcmp(optarg, "none") &&
+ !tracecmd_compress_is_supported(optarg, NULL))
+ die("Compression algorithm %s is not supported", optarg);
+ compression = optarg;
+ break;
+ case OPT_file_version:
+ file_version = atoi(optarg);
+ if (file_version < FILE_VERSION_MIN || file_version > FILE_VERSION_MAX)
+ die("Unsupported file version %d, "
+ "supported versions are from %d to %d",
+ file_version, FILE_VERSION_MIN, FILE_VERSION_MAX);
+
+ break;
+ case 'h':
+ case '?':
+ default:
+ usage(argv);
+ }
+ }
+
+ if ((argc - optind) >= 2) {
+ if (output_file)
+ usage(argv);
+ output_file = argv[optind + 1];
+ }
+
+ if (!input_file)
+ input_file = DEFAULT_INPUT_FILE;
+ if (!output_file)
+ usage(argv);
+
+ convert_file(input_file, output_file, file_version, compression);
+}
diff --git a/tracecmd/trace-usage.c b/tracecmd/trace-usage.c
index 77898c1c..ec0af46f 100644
--- a/tracecmd/trace-usage.c
+++ b/tracecmd/trace-usage.c
@@ -412,6 +412,19 @@ static struct usage_help usage_help[] = {
" -h, --help show usage information\n"
" --verbose 'level' Set the desired log level\n"
},
+ {
+ "convert",
+ "convert trace file to different version",
+ " %s convert [options]\n"
+ " -i input file, default is trace.dat\n"
+ " -o output file, mandatory parameter.\n"
+ " The output file can be specified also as last argument of the command\n"
+ " --file-version set the desired trace file version\n"
+ " --compression compress the trace output file, one of these strings can be passed:\n"
+ " any - auto select the best available compression algorithm\n"
+ " none - do not compress the trace file\n"
+ " name - the name of the desired compression algorithms\n"
+ " available algorithms can be listed with trace-cmd list -c\n" },
{
NULL, NULL, NULL
}
--
2.34.1
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