On 6/19/20 10:44 AM, John Fastabend wrote:
Yonghong Song wrote:
On 6/18/20 7:04 PM, Alexei Starovoitov wrote:
On Thu, Jun 18, 2020 at 5:26 PM John Fastabend wrote:
foo(int a, __int128 b)
would put a in r0 and b in r2 and r3 leaving a hole in r1. But that
was some old reference manua
Yonghong Song wrote:
>
>
> On 6/18/20 7:04 PM, Alexei Starovoitov wrote:
> > On Thu, Jun 18, 2020 at 5:26 PM John Fastabend
> > wrote:
> >>
> >> foo(int a, __int128 b)
> >>
> >> would put a in r0 and b in r2 and r3 leaving a hole in r1. But that
> >> was some old reference manual and might n
On Thu, Jun 18, 2020 at 03:05:11PM -0700, Alexei Starovoitov wrote:
> On Thu, Jun 18, 2020 at 01:48:06PM +0200, Jiri Olsa wrote:
> > On Wed, Jun 17, 2020 at 04:20:54PM -0700, John Fastabend wrote:
> > > Jiri Olsa wrote:
> > > > This way we can have trampoline on function
> > > > that has arguments
On 6/18/20 7:04 PM, Alexei Starovoitov wrote:
On Thu, Jun 18, 2020 at 5:26 PM John Fastabend wrote:
foo(int a, __int128 b)
would put a in r0 and b in r2 and r3 leaving a hole in r1. But that
was some old reference manual and might no longer be the case
This should not happen if clang
On Thu, Jun 18, 2020 at 5:26 PM John Fastabend wrote:
>
> foo(int a, __int128 b)
>
> would put a in r0 and b in r2 and r3 leaving a hole in r1. But that
> was some old reference manual and might no longer be the case
> in reality. Perhaps just spreading hearsay, but the point is we
> should say
Andrii Nakryiko wrote:
> On Thu, Jun 18, 2020 at 3:50 PM John Fastabend
> wrote:
> >
> > Jiri Olsa wrote:
> > > On Wed, Jun 17, 2020 at 04:20:54PM -0700, John Fastabend wrote:
> > > > Jiri Olsa wrote:
> > > > > This way we can have trampoline on function
> > > > > that has arguments with types li
On Thu, Jun 18, 2020 at 3:50 PM John Fastabend wrote:
>
> Jiri Olsa wrote:
> > On Wed, Jun 17, 2020 at 04:20:54PM -0700, John Fastabend wrote:
> > > Jiri Olsa wrote:
> > > > This way we can have trampoline on function
> > > > that has arguments with types like:
> > > >
> > > > kuid_t uid
> > > >
Jiri Olsa wrote:
> On Wed, Jun 17, 2020 at 04:20:54PM -0700, John Fastabend wrote:
> > Jiri Olsa wrote:
> > > This way we can have trampoline on function
> > > that has arguments with types like:
> > >
> > > kuid_t uid
> > > kgid_t gid
> > >
> > > which unwind into small structs like:
> > >
On Thu, Jun 18, 2020 at 01:48:06PM +0200, Jiri Olsa wrote:
> On Wed, Jun 17, 2020 at 04:20:54PM -0700, John Fastabend wrote:
> > Jiri Olsa wrote:
> > > This way we can have trampoline on function
> > > that has arguments with types like:
> > >
> > > kuid_t uid
> > > kgid_t gid
> > >
> > > whi
On Wed, Jun 17, 2020 at 04:20:54PM -0700, John Fastabend wrote:
> Jiri Olsa wrote:
> > This way we can have trampoline on function
> > that has arguments with types like:
> >
> > kuid_t uid
> > kgid_t gid
> >
> > which unwind into small structs like:
> >
> > typedef struct {
> > ui
Jiri Olsa wrote:
> This way we can have trampoline on function
> that has arguments with types like:
>
> kuid_t uid
> kgid_t gid
>
> which unwind into small structs like:
>
> typedef struct {
> uid_t val;
> } kuid_t;
>
> typedef struct {
> gid_t val;
> } kgid_t;
>
>
This way we can have trampoline on function
that has arguments with types like:
kuid_t uid
kgid_t gid
which unwind into small structs like:
typedef struct {
uid_t val;
} kuid_t;
typedef struct {
gid_t val;
} kgid_t;
And we can use them in bpftrace like:
(assuming d_
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