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| author | Steven Rostedt (Google) <rostedt@goodmis.org> | 2024-01-08 18:41:23 -0500 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2024-01-10 13:49:49 -0500 |
| commit | b86599e459618f858d5d596ac3854a8c529fad84 (patch) | |
| tree | cc9edcaaca001d7e49c43fffd6fda3f430a310e3 | |
| parent | 7d8b3c02c6583bdf8d39e5f32ada33edbd437669 (diff) | |
| download | trace-cmd-b86599e459618f858d5d596ac3854a8c529fad84.tar.gz | |
trace-cmd stat: Add sub-buffer size
Show the sub-buffer size if the file system supports it and it is different
than the architecture page size.
This requires libtracefs 1.8, so update the Makefile with that
requirement.
Link: https://lore.kernel.org/linux-trace-devel/20240108184123.62f9be6b@gandalf.local.home
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | meson.build | 2 | ||||
| -rw-r--r-- | tracecmd/trace-stat.c | 7 |
3 files changed, 9 insertions, 2 deletions
@@ -23,7 +23,7 @@ export LIBTRACECMD_VERSION VERSION_FILE = ltc_version.h LIBTRACEEVENT_MIN_VERSION = 1.5 -LIBTRACEFS_MIN_VERSION = 1.6 +LIBTRACEFS_MIN_VERSION = 1.8 MAKEFLAGS += --no-print-directory diff --git a/meson.build b/meson.build index fbdf016f..aadfe277 100644 --- a/meson.build +++ b/meson.build @@ -25,7 +25,7 @@ htmldir = join_paths(prefixdir, get_option('htmldir')) conf = configuration_data() libtraceevent_dep = dependency('libtraceevent', version: '>= 1.5.0', required: true) -libtracefs_dep = dependency('libtracefs', version: '>= 1.6.0', required: true) +libtracefs_dep = dependency('libtracefs', version: '>= 1.8.0', required: true) threads_dep = dependency('threads', required: true) dl_dep = cc.find_library('dl', required : false) diff --git a/tracecmd/trace-stat.c b/tracecmd/trace-stat.c index 9a6e2225..1d95d993 100644 --- a/tracecmd/trace-stat.c +++ b/tracecmd/trace-stat.c @@ -633,6 +633,8 @@ static void report_buffers(struct buffer_instance *instance) char *str; char *cont; char file[FILE_SIZE]; + int pagesize; + int bufsize; int cpu; str = tracefs_instance_file_read(instance->tracefs, "buffer_size_kb", NULL); @@ -678,6 +680,11 @@ static void report_buffers(struct buffer_instance *instance) printf("\nBuffer total size in kilobytes:\n"); printf(" %s\n", str); + pagesize = getpagesize(); + bufsize = tracefs_instance_get_subbuf_size(instance->tracefs); + if (bufsize > 0 && bufsize * 1024 != pagesize) + printf("\nSub-buffer size in kilobytes:\n %d\n", bufsize); + out: free(str); } |