This adds support to display irq context info for function tracer. To do
this, just specify a '--func-opts irq-info' option.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 1 +
tools/perf/builtin-ftrace.c | 21 -
2 files c
Add a change log after previous enhancements.
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index a70951938308..56dfce646d30 100644
--- a/tools/perf/builtin-ftrace.c
+++ b
te();
14160.770888 | 0) <...>-47814 | d... | 0.430 us|
fpregs_assert_state_consistent();
14160.770889 | 0) <...>-47814 | d... | | do_syscall_64() {
14160.770889 | 0) <...>-47814 | | |
__x64_sys_close() {
Signed-off-by: Chang
This adds an option '--graph-opts nosleep-time' which allow us
only to measure on-CPU time. This option is function_graph tracer
only.
Signed-off-by: Changbin Du
---
v3: switch to uniform option --graph-opts.
v2: option name '--nosleep-time' -> '--graph-no
This is to have a consistent view of all graph tracer options.
The original option '--graph-depth' is marked as deprecated.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 5 +
tools/perf/builtin-ftrace.c | 5 ++---
2 files changed, 3 insert
This adds an option '--graph-opts noirqs' to filter out functions executed
in irq context.
Signed-off-by: Changbin Du
---
v2: option name '--nofuncgraph-irqs' -> '--graph-noirqs'.
---
tools/perf/Documentation/perf-ftrace.txt | 1 +
tools/perf/b
# 4140.051 us | } /* do_idle */
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 1 +
tools/perf/builtin-ftrace.c | 26 +++-
2 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/tools/perf/Documentation/perf-ftrace.txt
b/
This adds an option '-D/--delay' to allow us to start tracing some
times later after workload is launched.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 4
tools/perf/builtin-ftrace.c | 19 ---
2 files changed, 20 insert
This adds an option '-m/--buffer-size' to allow us set the size of per-cpu
tracing buffer.
Signed-off-by: Changbin Du
---
v2: support units as a suffix.
---
tools/perf/Documentation/perf-ftrace.txt | 5 +++
tools/perf/builtin-ftrace.c | 56 +++
We will reuse this function later.
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 17 -
1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index 1188b82c6541..342861a1d152 100644
--- a/tools/perf
This adds an option '--inherit' to allow us trace children
processes spawned by our target.
Signed-off-by: Changbin Du
---
v2: option name '--trace-children' -> '--inherit'.
---
tools/perf/Documentation/perf-ftrace.txt | 3 ++
tools/perf/b
_write
<...>-9246 [006] 10726.262767: fpregs_assert_state_consistent
<-do_syscall_64
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index 348e2
=> vfs_read
=> ksys_read
=> __x64_sys_read
=> do_syscall_64
=> entry_SYSCALL_64_after_hwframe
...
Signed-off-by: Changbin Du
---
v3: switch to uniform option --func-opts.
v2: option name '-s' -> '--func-call-graph'
---
tools/perf/Documentation/pe
This allows us to trace single thread instead of the whole process.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 4
tools/perf/builtin-ftrace.c | 2 ++
2 files changed, 6 insertions(+)
diff --git a/tools/perf/Documentation/perf-ftrace.txt
b/tools
_cb
run_init_process
try_to_run_init_process
match_dev_by_label
match_dev_by_uuid
rootfs_init_fs_context
Signed-off-by: Changbin Du
---
v2: option name '-l/--list-functions' -> '-F/--funcs'
---
tools/perf/Documentation/perf-ftrace.txt | 4 +++
tools/perf/builtin-ftrace.c
This factors out a general function perf_parse_sublevel_options() to parse
sublevel options. The 'sublevel' options is something like the '--debug'
options which allow more sublevel options.
Signed-off-by: Changbin Du
---
v2: add util/parse-sublevel-options.c
---
t
e
This will trace all functions using function graph tracer:
$ sudo perf ftrace -G '*'
This will trace function vfs_read using function graph tracer:
$ sudo perf ftrace -G vfs_read
Signed-off-by: Changbin Du
---
v3: remove default '*' for -G/-T.
---
tools/perf/Documen
7;.
o mark old options deprecated instead of removing them.
Changbin Du (17):
perf ftrace: select function/function_graph tracer automatically
perf ftrace: add option '-F/--funcs' to list available functions
perf ftrace: add option -t/--tid to filter by thread id
perf ftrace
On Fri, Jul 10, 2020 at 11:29:49PM +0900, Namhyung Kim wrote:
> On Fri, Jul 10, 2020 at 10:44 PM Changbin Du wrote:
> >
> > This factors out a general function perf_parse_sublevel_options() to parse
> > sublevel options. The 'sublevel' options is something like
On Fri, Jul 10, 2020 at 11:14:05PM +0900, Namhyung Kim wrote:
> Hello,
>
> On Fri, Jul 10, 2020 at 10:43 PM Changbin Du wrote:
> >
> > The '-g/-G' options have already implied function_graph tracer should be
> > used instead of function tracer. So the extr
This adds an option '--graph-opts noirqs' to filter out functions executed
in irq context.
Signed-off-by: Changbin Du
---
v2: option name '--nofuncgraph-irqs' -> '--graph-noirqs'.
---
tools/perf/Documentation/perf-ftrace.txt | 1 +
tools/perf/b
This adds an option '--inherit' to allow us trace children
processes spawned by our target.
Signed-off-by: Changbin Du
---
v2: option name '--trace-children' -> '--inherit'.
---
tools/perf/Documentation/perf-ftrace.txt | 3 ++
tools/perf/b
This factors out a general function perf_parse_sublevel_options() to parse
sublevel options. The 'sublevel' options is something like the '--debug'
options which allow more sublevel options.
Signed-off-by: Changbin Du
---
v2: add util/parse-sublevel-options.c
---
t
=> vfs_read
=> ksys_read
=> __x64_sys_read
=> do_syscall_64
=> entry_SYSCALL_64_after_hwframe
...
Signed-off-by: Changbin Du
---
v3: switch to uniform option --func-opts.
v2: option name '-s' -> '--func-call-graph'
---
tools/perf/Documentation/pe
This adds support to display irq context info for function tracer. To do
this, just specify a '--func-opts irq-info' option.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 1 +
tools/perf/builtin-ftrace.c | 21 -
2 files c
This adds an option '--graph-opts nosleep-time' which allow us
only to measure on-CPU time. This option is function_graph tracer
only.
Signed-off-by: Changbin Du
---
v3: switch to uniform option --graph-opts.
v2: option name '--nosleep-time' -> '--graph-no
This adds an option '-m/--buffer-size' to allow us set the size of per-cpu
tracing buffer.
Signed-off-by: Changbin Du
---
v2: support units as a suffix.
---
tools/perf/Documentation/perf-ftrace.txt | 5 +++
tools/perf/builtin-ftrace.c | 56 +++
_write
<...>-9246 [006] 10726.262767: fpregs_assert_state_consistent
<-do_syscall_64
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index 348e2
This allows us to trace single thread instead of the whole process.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 4
tools/perf/builtin-ftrace.c | 2 ++
2 files changed, 6 insertions(+)
diff --git a/tools/perf/Documentation/perf-ftrace.txt
b/tools
_cb
run_init_process
try_to_run_init_process
match_dev_by_label
match_dev_by_uuid
rootfs_init_fs_context
Signed-off-by: Changbin Du
---
v2: option name '-l/--list-functions' -> '-F/--funcs'
---
tools/perf/Documentation/perf-ftrace.txt | 4 +++
tools/perf/builtin-ftrace.c
e
This will trace all functions using function graph tracer:
$ sudo perf ftrace -G
This will trace function vfs_read using function graph tracer:
$ sudo perf ftrace -G vfs_read
Signed-off-by: Changbin Du
---
v3: remove default '*' for -G/-T.
---
tools/perf/Documentation/per
We will reuse this function later.
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 17 -
1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index 1188b82c6541..342861a1d152 100644
--- a/tools/perf
-userstacktrace' and '--no-pager' are dropped.
o update all related perf documentation.
o rename some options. Now all funcgraph tracer options are prefixed with
'--graph-', while all function tracer options are prefixed with '--func-'.
o mark old option
On Wed, Jul 08, 2020 at 02:39:59PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Thu, Jul 09, 2020 at 12:45:48AM +0800, Changbin Du escreveu:
> > Here is a glance of all ftrace functions with this serias:
> >
> > $ sudo perf ftrace -h
>
> > Usage: perf ftrace
On Wed, Jul 08, 2020 at 02:34:23PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Thu, Jul 09, 2020 at 12:45:57AM +0800, Changbin Du escreveu:
> > This factors out a general function perf_parse_sublevel_options() to parse
> > sublevel options. The 'sublevel' options is so
# 4140.051 us | } /* do_idle */
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 1 +
tools/perf/builtin-ftrace.c | 26 +++-
2 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/tools/perf/Documentation/perf-ftrace.txt
b/
This adds support to display irq context info for function tracer. To do
this, just specify a '--func-opts irq-info' option.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 1 +
tools/perf/builtin-ftrace.c | 21 -
2 files c
Add a change log after previous enhancements.
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index a20187b1556a..664cdfabc77b 100644
--- a/tools/perf/builtin-ftrace.c
+++ b
te();
14160.770888 | 0) <...>-47814 | d... | 0.430 us|
fpregs_assert_state_consistent();
14160.770889 | 0) <...>-47814 | d... | | do_syscall_64() {
14160.770889 | 0) <...>-47814 | | |
__x64_sys_close() {
Signed-off-by: Chang
This adds an option '--graph-opts noirqs' to filter out functions executed
in irq context.
Signed-off-by: Changbin Du
---
v2: option name '--nofuncgraph-irqs' -> '--graph-noirqs'.
---
tools/perf/Documentation/perf-ftrace.txt | 1 +
tools/perf/b
This is to have a consistent view of all graph tracer options.
The original option '--graph-depth' is marked as deprecated.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 4 +++-
tools/perf/builtin-ftrace.c | 5 +++--
2 files changed, 6 insert
_write
<...>-9246 [006] 10726.262767: fpregs_assert_state_consistent
<-do_syscall_64
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index 66cdf
This adds an option '-d/--delay' to allow us to start tracing some
times later after workload is launched.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 4
tools/perf/builtin-ftrace.c | 19 ---
2 files changed, 20 insert
We will reuse this function later.
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 17 -
1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index 7793c3d083e0..7eb41f7027c8 100644
--- a/tools/perf
This adds an option '--graph-opts nosleep-time' which allow us
only to measure on-CPU time. This option is function_graph tracer
only.
Signed-off-by: Changbin Du
---
v3: switch to uniform option --graph-opts.
v2: option name '--nosleep-time' -> '--graph-no
This adds an option '--inherit' to allow us trace children
processes spawned by our target.
Signed-off-by: Changbin Du
---
v2: option name '--trace-children' -> '--inherit'.
---
tools/perf/Documentation/perf-ftrace.txt | 3 ++
tools/perf/b
=> vfs_read
=> ksys_read
=> __x64_sys_read
=> do_syscall_64
=> entry_SYSCALL_64_after_hwframe
...
Signed-off-by: Changbin Du
---
v3: switch to uniform option --func-opts.
v2: option name '-s' -> '--func-call-graph'
---
tools/perf/Documentation/pe
This adds an option '-m/--buffer-size' to allow us set the size of per-cpu
tracing buffer.
Signed-off-by: Changbin Du
---
v2: support units as a suffix.
---
tools/perf/Documentation/perf-ftrace.txt | 5 +++
tools/perf/builtin-ftrace.c | 56 +++
This factors out a general function perf_parse_sublevel_options() to parse
sublevel options. The 'sublevel' options is something like the '--debug'
options which allow more sublevel options.
Signed-off-by: Changbin Du
---
tools/pe
_cb
run_init_process
try_to_run_init_process
match_dev_by_label
match_dev_by_uuid
rootfs_init_fs_context
Signed-off-by: Changbin Du
---
v2: option name '-l/--list-functions' -> '-F/--funcs'
---
tools/perf/Documentation/perf-ftrace.txt | 4 +++
tools/perf/builtin-ftrace.c
e
This will trace all functions using function graph tracer:
$ sudo perf ftrace -G
This will trace function vfs_read using function graph tracer:
$ sudo perf ftrace -G vfs_read
Signed-off-by: Changbin Du
---
v3: remove default '*' for -G/-T.
---
tools/perf/Documentation/per
This allows us to trace single thread instead of the whole process.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 4
tools/perf/builtin-ftrace.c | 2 ++
2 files changed, 6 insertions(+)
diff --git a/tools/perf/Documentation/perf-ftrace.txt
b/tools
th '--func-'.
o mark old options deprecated instead of removing them.
Changbin Du (17):
perf ftrace: select function/function_graph tracer automatically
perf ftrace: add option '-F/--funcs' to list available functions
perf ftrace: add option -t/--tid to filter by threa
On Tue, Jul 07, 2020 at 01:09:43PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Tue, Jul 07, 2020 at 11:35:14PM +0800, Changbin Du escreveu:
> > On Fri, Jul 03, 2020 at 03:40:59PM +0900, Namhyung Kim wrote:
> > > On Sat, Jun 27, 2020 at 10:38 PM Changbin Du
> > >
On Tue, Jul 07, 2020 at 12:09:23PM -0400, Steven Rostedt wrote:
> On Sat, 27 Jun 2020 21:36:44 +0800
> Changbin Du wrote:
>
> > We will reuse this function later.
> >
>
> BTW, trace-cmd.git now has a libtracefs.so library, which I'm hoping
> within a month
On Fri, Jul 03, 2020 at 03:40:59PM +0900, Namhyung Kim wrote:
> On Sat, Jun 27, 2020 at 10:38 PM Changbin Du wrote:
> >
> > This adds an option '--graph-nosleep-time' which allow us only to measure
> > on-CPU time. This option is function_graph tracer only.
>
On Fri, Jul 03, 2020 at 03:30:32PM +0900, Namhyung Kim wrote:
> On Sat, Jun 27, 2020 at 10:38 PM Changbin Du wrote:
> >
> > This adds support to display call trace for function tracer. To do this,
> > just specify a '--func-call-graph' option.
>
> What if it&
On Fri, Jul 03, 2020 at 02:58:19PM +0900, Namhyung Kim wrote:
> On Sat, Jun 27, 2020 at 10:37 PM Changbin Du wrote:
> >
> > This adds an option '-F/--funcs' to list all available functions to trace,
> > which is read from tracing file 'available_filter_functio
On Fri, Jul 03, 2020 at 02:47:09PM +0900, Namhyung Kim wrote:
> Hello,
>
> On Sat, Jun 27, 2020 at 10:37 PM Changbin Du wrote:
> >
> > The '-g/-G' options have already implied function_graph tracer should be
> > used instead of function tracer. So the extr
On Fri, Jul 03, 2020 at 03:20:15PM +0900, Namhyung Kim wrote:
> On Sat, Jun 27, 2020 at 10:38 PM Changbin Du wrote:
> >
> > This makes perf-ftrace display column header before printing trace.
> >
> > $ sudo perf ftrace
> > \# tracer: function
> > \#
> &
Add a change log after previous enhancements.
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index 0f8716ea0da4..3d73809150c8 100644
--- a/tools/perf/builtin-ftrace.c
+++ b
140.051 us | } /* do_idle */
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 3 +++
tools/perf/builtin-ftrace.c | 25
2 files changed, 28 insertions(+)
diff --git a/tools/perf/Documentation/perf-ftrace.txt
b/tools/perf/Document
te();
14160.770888 | 0) <...>-47814 | d... | 0.430 us|
fpregs_assert_state_consistent();
14160.770889 | 0) <...>-47814 | d... | | do_syscall_64() {
14160.770889 | 0) <...>-47814 | | |
__x64_sys_close() {
Signed-off-by: Chang
This adds support to display irq context info for function tracer. To do
this, just specify a '--func-irq-info' option.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 3 +++
tools/perf/builtin-ftrace.c | 20
2 files c
This adds an option '--graph-noirqs' to filter out functions executed
in irq context.
Signed-off-by: Changbin Du
---
v2: option name '--nofuncgraph-irqs' -> '--graph-noirqs'.
---
tools/perf/Documentation/perf-ftrace.txt | 3 +++
tools/perf/b
<...>-9246 [006] 10726.262767: fpregs_assert_state_consistent
<-do_syscall_64
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index e45496012611..686d744d5025 1
This adds an option '-d/--delay' to allow us to start tracing some
times later after workload is launched.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 4
tools/perf/builtin-ftrace.c | 19 ---
2 files changed, 20 insert
This adds an option '--graph-nosleep-time' which allow us only to measure
on-CPU time. This option is function_graph tracer only.
Signed-off-by: Changbin Du
---
v2: option name '--nosleep-time' -> '--graph-nosleep-time'.
---
tools/perf/Documentation/perf-ftrace
This adds an option '-m/--buffer-size' to allow us set the size of per-cpu
tracing buffer.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 4
tools/perf/builtin-ftrace.c | 22 ++
2 files changed, 26 insertions(+)
di
This allows us to trace single thread instead of the whole process.
Signed-off-by: Changbin Du
---
tools/perf/Documentation/perf-ftrace.txt | 4
tools/perf/builtin-ftrace.c | 2 ++
2 files changed, 6 insertions(+)
diff --git a/tools/perf/Documentation/perf-ftrace.txt
b/tools
This adds an option '--inherit' to allow us trace children
processes spawned by our target.
Signed-off-by: Changbin Du
---
v2: option name '--trace-children' -> '--inherit'.
---
tools/perf/Documentation/perf-ftrace.txt | 3 ++
tools/perf/b
=> vfs_read
=> ksys_read
=> __x64_sys_read
=> do_syscall_64
=> entry_SYSCALL_64_after_hwframe
...
Signed-off-by: Changbin Du
---
v2: option name '-s' -> '--func-call-graph'
---
tools/perf/Documentation/perf-ftrace.txt | 3 +++
tools/perf/builtin-ftrace.c
We will reuse this function later.
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 17 -
1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index dceae70c3a22..003efa756322 100644
--- a/tools/perf
_cb
run_init_process
try_to_run_init_process
match_dev_by_label
match_dev_by_uuid
rootfs_init_fs_context
Signed-off-by: Changbin Du
---
v2: option name '-l/--list-functions' -> '-F/--funcs'
---
tools/perf/Documentation/perf-ftrace.txt | 4 +++
tools/perf/builtin-ftrace.c
ng all functions using function tracer:
$ sudo perf ftrace
This will trace all functions using function graph tracer:
$ sudo perf ftrace -G
This will trace function vfs_read using function graph tracer:
$ sudo perf ftrace -G vfs_read
Signed-off-by: Changbin Du
---
tools/perf/Documentati
.
o rename some options. Now all funcgraph tracer options are prefixed with
'--graph-', while all function tracer options are prefixed with '--func-'.
o mark old options deprecated instead of removing them.
Changbin Du (15):
perf ftrace: select function/function_graph t
Hi Arnaldo,
First appologize for so long dealy! Maybe you have forgot the context of this
serias ;)
On Wed, May 20, 2020 at 06:05:09PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, May 10, 2020 at 11:06:19PM +0800, Changbin Du escreveu:
> > This adds an option '--funcgraph-tail
On Wed, May 20, 2020 at 06:07:41PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, May 10, 2020 at 11:06:20PM +0800, Changbin Du escreveu:
> > This adds an option ''-u/--userstacktrace' for function tracer to display
> > userspace back trace.
>
> Probably we s
Hi Arnaldo,
Have you checked this one? thanks.
On Sun, May 03, 2020 at 04:00:56AM +, Changbin Du wrote:
> The documentation says the default value of call-graph.record_mode is 'fp'.
> But actually we never can omit value of call-graph parameter. This patch
> can fix this is
On Wed, May 20, 2020 at 06:08:14PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, May 10, 2020 at 11:06:22PM +0800, Changbin Du escreveu:
> > This adds an option '-b/--buffer-size' to allow us set the size of per-cpu
> > tracing buffer.
>
> -m
>
sur
On Wed, May 20, 2020 at 05:59:40PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, May 10, 2020 at 11:06:14PM +0800, Changbin Du escreveu:
> > This adds an option '-l/--list-functions' to list all available functions
> > which is read from tracing file 'available_fi
On Wed, May 20, 2020 at 06:09:14PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, May 10, 2020 at 11:06:23PM +0800, Changbin Du escreveu:
> > Sometimes we want perf displays trace immediately. So this adds an option
> > '-P/--no-pager' to disable pager if needed.
>
On Wed, May 20, 2020 at 06:11:01PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, May 10, 2020 at 11:06:24PM +0800, Changbin Du escreveu:
> > This makes perf-ftrace display column header before printing trace.
>
> [acme@five perf]$ perf report -h header
>
>
On Wed, May 20, 2020 at 06:12:28PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, May 10, 2020 at 11:06:25PM +0800, Changbin Du escreveu:
> > This allows us to trace single thread instead of the whole process.
>
> I was going to adjust the patch to add, but you forgot to add
On Wed, May 20, 2020 at 06:13:31PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, May 10, 2020 at 11:06:26PM +0800, Changbin Du escreveu:
> > This adds an option '-d/--delay' to allow us to start tracing some
> > times later after workload is launched.
>
> [acme@f
On Sun, May 31, 2020 at 02:52:23PM +0900, Namhyung Kim wrote:
> Hello,
>
> On Mon, May 11, 2020 at 12:07 AM Changbin Du wrote:
> >
> > The '-g/-G' options have already implied function_graph tracer should be
> > used instead of function tracer. So the extr
On Sun, May 31, 2020 at 02:56:41PM +0900, Namhyung Kim wrote:
> On Thu, May 21, 2020 at 6:01 AM Arnaldo Carvalho de Melo
> wrote:
> >
> > Em Sun, May 10, 2020 at 11:06:15PM +0800, Changbin Du escreveu:
> > > This adds an option '--nosleep-time' which allow
On Wed, May 20, 2020 at 06:02:57PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, May 10, 2020 at 11:06:17PM +0800, Changbin Du escreveu:
> > Sometimes we want ftrace display more and longer information about trace.
>
> Humm, -v? Or that would bring too much stuff from other par
On Wed, May 20, 2020 at 05:31:28PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, May 10, 2020 at 11:06:09PM +0800, Changbin Du escreveu:
> > The perf has basic kernel ftrace support but lack support of most tracing
> > options. This serias is target to enhance the perf ftrace f
Hi Steven,
On Sat, May 16, 2020 at 01:15:21PM -0400, Steven Rostedt wrote:
> On Sun, 17 May 2020 00:10:17 +0800
> Changbin Du wrote:
>
> > The flag LATENCY_FMT actually is usually set by latency tracers internally.
> > So I think we should not export it to userspace. T
The flag LATENCY_FMT actually is usually set by latency tracers internally.
So I think we should not export it to userspace. This patch removes the
option file 'latency-format' but keep the flag defined as usual.
Signed-off-by: Changbin Du
---
kernel/trace/trace.c | 4
kernel/tra
The tracing option 'irq-info' is only used by function tracer by far. This
patch makes it also against function graph tracer. Then the two tracers
have consistent behavior of this option.
Signed-off-by: Changbin Du
---
kernel/trace/trace_functions_graph.c | 6 +++---
1 file
Sometimes it is useful to preserve batches of configs when making
localmodconfig. For example, I usually don't want any usb and fs
modules to be disabled. Now we can do it by:
$ make LMC_KEEP="drivers/usb:fs" localmodconfig
Signed-off-by: Changbin Du
Acked-by: Steven Rostedt (V
On Tue, May 12, 2020 at 03:52:04PM +0900, Masahiro Yamada wrote:
> On Sun, May 10, 2020 at 10:06 AM Changbin Du wrote:
> >
> > Sometimes it is useful to preserve batches of configs when making
> > localmodconfig. For example, I usually don't want any usb and fs
> >
This adds an option '-d/--delay' to allow us to start tracing some
times later after workload is launched.
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 19 ---
1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/tools/perf/builtin-ftrace.c b/
Add a change log after previous enhancements.
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index fd8e2f305136..8170746f94fd 100644
--- a/tools/perf/builtin-ftrace.c
+++ b
) | 1.023 us| fsnotify();
1) | 0.335 us| __sb_end_write();
1) d... | 0.439 us| fpregs_assert_state_consistent();
1) d... | | do_syscall_64() {
1) | |__x64_sys_close() {
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 20
This allows us to trace single thread instead of the whole process.
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index 0b39b6a88026..8d04e5afe2d3 100644
--- a/tools/perf
This adds an option '--trace-children' to allow us trace children
processes spawned by our target.
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 20
1 file changed, 20 insertions(+)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftra
This adds an option '-b/--buffer-size' to allow us set the size of per-cpu
tracing buffer.
Signed-off-by: Changbin Du
---
tools/perf/builtin-ftrace.c | 45 -
1 file changed, 35 insertions(+), 10 deletions(-)
diff --git a/tools/perf/builtin-ftrace
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