Re: [PATCH v4] tools/lib/traceevent: Change description of few APIs

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On Tue, 19 Mar 2019 10:35:05 +0000
Tzvetomir Stoyanov <tstoyanov@xxxxxxxxxx> wrote:

> On Mon, Mar 18, 2019 at 11:03 PM Matt Helsley <mhelsley@xxxxxxxxxx> wrote:
> >
> >
> >  
> > > On Mar 15, 2019, at 1:11 AM, Tzvetomir Stoyanov <tstoyanov@xxxxxxxxxx> wrote:
> > >
> > > APIs descriptions should describe the purpose of the
> > > function, its parameters and return value. While working
> > > on man pages implementation, I noticed mismatches in the
> > > descriptions of few APIs. This patch changes the description
> > > of these APIs, making them consistent with the man pages:
> > > tep_print_num_field(), tep_print_func_field(),
> > > tep_get_header_page_size(), tep_get_long_size(),
> > > tep_set_long_size(), tep_get_page_size() and
> > > tep_set_page_size().
> > >
> > > Signed-off-by: Tzvetomir Stoyanov <tstoyanov@xxxxxxxxxx>
> > > ---
> > > tools/lib/traceevent/event-parse-api.c | 21 ++++++++++++---------
> > > tools/lib/traceevent/event-parse.c     |  4 ++--
> > > 2 files changed, 14 insertions(+), 11 deletions(-)
> > >
> > > diff --git a/tools/lib/traceevent/event-parse-api.c b/tools/lib/traceevent/event-parse-api.c
> > > index d4368dcc16ea..2d5d3642e3e9 100644
> > > --- a/tools/lib/traceevent/event-parse-api.c
> > > +++ b/tools/lib/traceevent/event-parse-api.c
> > > @@ -100,10 +100,10 @@ tep_data2host8(struct tep_handle *pevent, unsigned long long data)
> > > }
> > >
> > > /**
> > > - * tep_get_header_page_size - get size of the header page
> > > + * tep_get_header_page_size - get the size of a long integer, in kernel context  
> >
> > Just want to check If this comment change correct. Given the function name it looks a bit odd compared to the comment for tep_get_long_size().  
> 
> It is a copy / paste error,

Hmm, the function name is very confusing, as it is returning the kernel
context long size. Perhaps we should rename it to:

tep_get_header_long_size()

-- Steve

> Thanks Matt
> 
> 
> >  
> > >  * @pevent: a handle to the tep_handle
> > >  *
> > > - * This returns size of the header page
> > > + * This returns the size of a long integer, in kernel context
> > >  * If @pevent is NULL, 0 is returned.
> > >  */
> > > int tep_get_header_page_size(struct tep_handle *pevent)
> > > @@ -140,10 +140,11 @@ void tep_set_cpus(struct tep_handle *pevent, int cpus)
> > > }
> > >
> > > /**
> > > - * tep_get_long_size - get the size of a long integer on the current machine
> > > + * tep_get_long_size - get the size of a long integer on the traced machine
> > >  * @pevent: a handle to the tep_handle
> > >  *
> > > - * This returns the size of a long integer on the current machine
> > > + * This returns the size of a long integer on the machine,
> > > + * where the trace is generated
> > >  * If @pevent is NULL, 0 is returned.
> > >  */  
> 
> 
> 
> --
> 
> Tzvetomir (Ceco) Stoyanov
> VMware Open Source Technology Center




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