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From: Michael Sartain <mikesart@fastmail.com>
To: linux-trace-devel@vger.kernel.org
Cc: Michael Sartain <mikesart@fastmail.com>
Subject: [PATCH] trace-cmd library: Add API to get information from trace file
Date: Tue, 30 Nov 2021 19:24:31 -0700	[thread overview]
Message-ID: <20211201022431.64763-1-mikesart@fastmail.com> (raw)

New APIs added to get trace cpustats, uname, version strings, and
cpu file sizes and offsets.

  const char *tracecmd_get_cpustats(struct tracecmd_input *handle);
  const char *tracecmd_get_uname(struct tracecmd_input *handle);
  const char *tracecmd_get_version(struct tracecmd_input *handle);
  unsigned long long tracecmd_get_cpu_file_offset(struct tracecmd_input *handle, int cpu);
  unsigned long long tracecmd_get_cpu_file_size(struct tracecmd_input *handle, int cpu);

Signed-off-by: Michael Sartain <mikesart@fastmail.com>
---
 .../include/private/trace-cmd-private.h       |  6 +++++
 lib/trace-cmd/trace-input.c                   | 25 +++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/lib/trace-cmd/include/private/trace-cmd-private.h b/lib/trace-cmd/include/private/trace-cmd-private.h
index c58b09e..cd78cc9 100644
--- a/lib/trace-cmd/include/private/trace-cmd-private.h
+++ b/lib/trace-cmd/include/private/trace-cmd-private.h
@@ -90,6 +90,12 @@ bool tracecmd_get_quiet(struct tracecmd_output *handle);
 void tracecmd_set_out_clock(struct tracecmd_output *handle, const char *clock);
 const char *tracecmd_get_trace_clock(struct tracecmd_input *handle);
 
+const char *tracecmd_get_cpustats(struct tracecmd_input *handle);
+const char *tracecmd_get_uname(struct tracecmd_input *handle);
+const char *tracecmd_get_version(struct tracecmd_input *handle);
+unsigned long long tracecmd_get_cpu_file_offset(struct tracecmd_input *handle, int cpu);
+unsigned long long tracecmd_get_cpu_file_size(struct tracecmd_input *handle, int cpu);
+
 static inline int tracecmd_host_bigendian(void)
 {
 	unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 };
diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index ac57bc4..99dbca2 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -4088,6 +4088,31 @@ const char *tracecmd_get_trace_clock(struct tracecmd_input *handle)
 	return handle->trace_clock;
 }
 
+const char *tracecmd_get_cpustats(struct tracecmd_input *handle)
+{
+	return handle->cpustats;
+}
+
+const char *tracecmd_get_uname(struct tracecmd_input *handle)
+{
+	return handle->uname;
+}
+
+const char *tracecmd_get_version(struct tracecmd_input *handle)
+{
+	return handle->version;
+}
+
+unsigned long long tracecmd_get_cpu_file_offset(struct tracecmd_input *handle, int cpu)
+{
+	return (cpu < handle->cpus) ? handle->cpu_data[cpu].file_offset : 0;
+}
+
+unsigned long long tracecmd_get_cpu_file_size(struct tracecmd_input *handle, int cpu)
+{
+	return (cpu < handle->cpus) ? handle->cpu_data[cpu].file_size : 0;
+}
+
 /**
  * tracecmd_get_show_data_func - return the show data func
  * @handle: input handle for the trace.dat file
-- 
2.33.0


             reply	other threads:[~2021-12-01  2:24 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-01  2:24 Michael Sartain [this message]
2021-12-01 15:33 ` [PATCH] trace-cmd library: Add API to get information from trace file Steven Rostedt
2021-12-02  2:36   ` Michael Sartain
2021-12-02  2:55     ` Steven Rostedt

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