From: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>
To: rostedt@goodmis.org
Cc: linux-trace-devel@vger.kernel.org
Subject: [PATCH v8 4/9] trace-cmd library: New API to copy buffer description between trace files
Date: Wed, 26 Jan 2022 11:51:49 +0200 [thread overview]
Message-ID: <20220126095154.570700-5-tz.stoyanov@gmail.com> (raw)
In-Reply-To: <20220126095154.570700-1-tz.stoyanov@gmail.com>
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
next prev parent reply other threads:[~2022-01-26 9:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
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 ` [PATCH v8 3/9] trace-cmd library: Copy CPU count between trace files Tzvetomir Stoyanov (VMware)
2022-01-26 9:51 ` Tzvetomir Stoyanov (VMware) [this message]
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 ` [PATCH v8 6/9] trace-cmd library: New API to copy trace data " 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)
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)
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