Re: FAILED: patch "[PATCH] Revert "perf report: Append inlines to non-DWARF callchains"" failed to apply to 6.4-stable tree

[Arnaldo Carvalho de Melo <acme@kernel.org>]

Em Sat, Aug 12, 2023 at 06:50:51PM +0200, gregkh@linuxfoundation.org escreveu:
> 
> The patch below does not apply to the 6.4-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@vger.kernel.org>.
> 
> To reproduce the conflict and resubmit, you may use the following commands:
> 
> git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.4.y
> git checkout FETCH_HEAD
> git cherry-pick -x c0b067588a4836b762cfc6a4c83f122ca1dbb93a
> # <resolve conflicts, build, test, etc.>
> git commit -s
> git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2023081251-conceal-stool-53f1@gregkh' --subject-prefix 'PATCH 6.4.y' HEAD^..

Had to add "--no-cover-letter":

[acme@quaco perf-tools-next]$ git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2023081251-conceal-stool-53f1@gregkh' --subject-prefix 'PATCH 6.4.y' HEAD^..
/tmp/5jnzQlFK3_/0000-cover-letter.patch
/tmp/5jnzQlFK3_/0001-Revert-perf-report-Append-inlines-to-non-DWARF-callc.patch
Refusing to send because the patch
	/tmp/5jnzQlFK3_/0000-cover-letter.patch
has the template subject '*** SUBJECT HERE ***'. Pass --force if you really want to send.
[acme@quaco perf-tools-next]$
[acme@quaco perf-tools-next]$
[acme@quaco perf-tools-next]$
[acme@quaco perf-tools-next]$ man git-send-email
[acme@quaco perf-tools-next]$
[acme@quaco perf-tools-next]$ git send-email --no-cover-letter

Sent.
 
> Possible dependencies:
> 
> 
> 
> thanks,
> 
> greg k-h
> 
> ------------------ original commit in Linus's tree ------------------
> 
> From c0b067588a4836b762cfc6a4c83f122ca1dbb93a Mon Sep 17 00:00:00 2001
> From: Arnaldo Carvalho de Melo <acme@kernel.org>
> Date: Tue, 1 Aug 2023 18:42:47 -0300
> Subject: [PATCH] Revert "perf report: Append inlines to non-DWARF callchains"
> 
> This reverts commit 46d21ec067490ab9cdcc89b9de5aae28786a8b8e.
> 
> The tests were made with a specific workload, further tests on a
> recently updated fedora 38 system with a system wide perf.data file
> shows 'perf report' taking excessive time resolving inlines in vmlinux,
> so lets revert this until a full investigation and improvement on the
> addr2line support code is made.
> 
> Reported-by: Jesper Dangaard Brouer <hawk@kernel.org>
> Acked-by: Artem Savkov <asavkov@redhat.com>
> Tested-by: Jesper Dangaard Brouer <hawk@kernel.org>
> Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com>
> Cc: Namhyung Kim <namhyung@kernel.org>
> Cc: Adrian Hunter <adrian.hunter@intel.com>
> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> Cc: Ian Rogers <irogers@google.com>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Jiri Olsa <jolsa@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Masami Hiramatsu <mhiramat@kernel.org>
> Cc: Milian Wolff <milian.wolff@kdab.com>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Link: https://lore.kernel.org/r/ZMl8VyhdwhClTM5g@kernel.org
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
> index 4e62843d51b7..f4cb41ee23cd 100644
> --- a/tools/perf/util/machine.c
> +++ b/tools/perf/util/machine.c
> @@ -45,7 +45,6 @@
>  
>  static void __machine__remove_thread(struct machine *machine, struct thread_rb_node *nd,
>  				     struct thread *th, bool lock);
> -static int append_inlines(struct callchain_cursor *cursor, struct map_symbol *ms, u64 ip);
>  
>  static struct dso *machine__kernel_dso(struct machine *machine)
>  {
> @@ -2385,10 +2384,6 @@ static int add_callchain_ip(struct thread *thread,
>  	ms.maps = maps__get(al.maps);
>  	ms.map = map__get(al.map);
>  	ms.sym = al.sym;
> -
> -	if (!branch && append_inlines(cursor, &ms, ip) == 0)
> -		goto out;
> -
>  	srcline = callchain_srcline(&ms, al.addr);
>  	err = callchain_cursor_append(cursor, ip, &ms,
>  				      branch, flags, nr_loop_iter,
> 

-- 

- Arnaldo