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SubjectRe: [PATCH 1/1] ftrace: adding other non-leaving .text sections

On Wed, 26 Nov 2008, Liming Wang wrote:

> Please review this patch, and I don't know whether new sections will conflict
> with sched tracer or others.
> This patch is against Steven tree's tip/devel latest commit.
>
> Impact: improve recordmcount.pl
>
> Besides .text section, there are three .text sections that won't
> be freed after kernel booting. They are: .sched.text, .spinlock.text
> and .kprobes.text, which contain functions we can trace. But the last
> section ".kprobes.text" is particular, which has been marked as "notrace",
> we ignore it. Thus we add other two sections.

Yep, only those sections that we know will not disappear are OK. I was
conservative with only using ".text" but I knew there were other sections
that were OK, so I used the hash array to make it easy to add others.

Thanks!

Acked-by: Steven Rostedt <srostedt@redhat.com>

-- Steve

>
> Signed-off-by: Liming Wang <liming.wang@windriver.com>
> ---
> scripts/recordmcount.pl | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
> index 0197e2f..0b1dc9f 100755
> --- a/scripts/recordmcount.pl
> +++ b/scripts/recordmcount.pl
> @@ -112,6 +112,8 @@ my ($arch, $bits, $objdump, $objcopy, $cc,
> # Acceptable sections to record.
> my %text_sections = (
> ".text" => 1,
> + ".sched.text" => 1,
> + ".spinlock.text" => 1,
> );
>
> $objdump = "objdump" if ((length $objdump) == 0);
> --
> 1.6.0.3
>
>
>


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