From: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>
To: rostedt@goodmis.org
Cc: linux-trace-devel@vger.kernel.org
Subject: [PATCH v12 2/9] trace-cmd: Added support for negative time offsets in trace.dat file
Date: Wed, 28 Aug 2019 11:57:39 +0300 [thread overview]
Message-ID: <20190828085746.26231-3-tz.stoyanov@gmail.com> (raw)
In-Reply-To: <20190828085746.26231-1-tz.stoyanov@gmail.com>
From: Tzvetomir Stoyanov <tstoyanov@vmware.com>
When synchronizing timestamps between different machines, there are cases
when the time offset is negative. This patch changes the way time offset is
written and read from trace.dat file - as signed decimal, instead of hex.
Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com>
---
include/trace-cmd/trace-cmd.h | 2 +-
lib/trace-cmd/trace-input.c | 6 +++---
tracecmd/trace-read.c | 4 ++--
3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/include/trace-cmd/trace-cmd.h b/include/trace-cmd/trace-cmd.h
index da29d53..c7cac98 100644
--- a/include/trace-cmd/trace-cmd.h
+++ b/include/trace-cmd/trace-cmd.h
@@ -129,7 +129,7 @@ int tracecmd_is_buffer_instance(struct tracecmd_input *handle);
void tracecmd_create_top_instance(char *name);
void tracecmd_remove_instances(void);
-void tracecmd_set_ts_offset(struct tracecmd_input *handle, unsigned long long offset);
+void tracecmd_set_ts_offset(struct tracecmd_input *handle, long long offset);
void tracecmd_set_ts2secs(struct tracecmd_input *handle, unsigned long long hz);
void tracecmd_print_events(struct tracecmd_input *handle, const char *regex);
diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index 654101f..05e595f 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -90,7 +90,7 @@ struct tracecmd_input {
bool read_page;
bool use_pipe;
struct cpu_data *cpu_data;
- unsigned long long ts_offset;
+ long long ts_offset;
double ts2secs;
char * cpustats;
char * uname;
@@ -2121,7 +2121,7 @@ static int init_cpu(struct tracecmd_input *handle, int cpu)
}
void tracecmd_set_ts_offset(struct tracecmd_input *handle,
- unsigned long long offset)
+ long long offset)
{
handle->ts_offset = offset;
}
@@ -2138,7 +2138,7 @@ void tracecmd_set_ts2secs(struct tracecmd_input *handle,
static int handle_options(struct tracecmd_input *handle)
{
- unsigned long long offset;
+ long long offset;
unsigned short option;
unsigned int size;
char *cpustats = NULL;
diff --git a/tracecmd/trace-read.c b/tracecmd/trace-read.c
index d22c723..8d98dd7 100644
--- a/tracecmd/trace-read.c
+++ b/tracecmd/trace-read.c
@@ -58,7 +58,7 @@ static struct list_head handle_list;
struct input_files {
struct list_head list;
const char *file;
- unsigned long long tsoffset;
+ long long tsoffset;
unsigned long long ts2secs;
};
static struct list_head input_files;
@@ -1422,7 +1422,7 @@ void trace_report (int argc, char **argv)
struct input_files *inputs;
struct handle_list *handles;
enum output_type otype;
- unsigned long long tsoffset = 0;
+ long long tsoffset = 0;
unsigned long long ts2secs = 0;
unsigned long long ts2sc;
int show_stat = 0;
--
2.21.0
next prev parent reply other threads:[~2019-08-28 8:57 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-28 8:57 [PATCH v12 0/9] trace-cmd: Timetamps sync between host and guest machines, relying on vsock events Tzvetomir Stoyanov (VMware)
2019-08-28 8:57 ` [PATCH v12 1/9] trace-cmd: Implemented new lib API: tracecmd_local_events_system() Tzvetomir Stoyanov (VMware)
2019-10-22 16:34 ` Steven Rostedt
2019-10-25 9:24 ` Tzvetomir Stoyanov
2019-08-28 8:57 ` Tzvetomir Stoyanov (VMware) [this message]
2019-08-28 8:57 ` [PATCH v12 3/9] trace-cmd: Fix tracecmd_read_page_record() to read more than one event Tzvetomir Stoyanov (VMware)
2019-10-22 17:34 ` Steven Rostedt
2019-08-28 8:57 ` [PATCH v12 4/9] trace-cmd: Added implementation of htonll() and ntohll() Tzvetomir Stoyanov (VMware)
2019-08-28 8:57 ` [PATCH v12 5/9] trace-cmd: Refactored few functions in trace-record.c Tzvetomir Stoyanov (VMware)
2019-10-22 17:47 ` Steven Rostedt
2019-08-28 8:57 ` [PATCH v12 6/9] trace-cmd: Find and store pids of tasks, which run virtual CPUs of given VM Tzvetomir Stoyanov (VMware)
2019-08-28 8:57 ` [PATCH v12 7/9] trace-cmd: Implemented new API tracecmd_add_option_v() Tzvetomir Stoyanov (VMware)
2019-10-22 19:10 ` Steven Rostedt
2019-08-28 8:57 ` [PATCH v12 8/9] trace-cmd: Implemented new option in trace.dat file: TRACECMD_OPTION_TIME_SHIFT Tzvetomir Stoyanov (VMware)
2019-08-28 8:57 ` [PATCH v12 9/9] trace-cmd [POC]: Implemented timestamps synch algorithm, using vsock events Tzvetomir Stoyanov (VMware)
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