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From: Adrian Hunter <adrian.hunter@intel.com>
To: Changbin Du <changbin.du@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
	Ian Rogers <irogers@google.com>, Ingo Molnar <mingo@redhat.com>,
	linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
	Hui Wang <hw.huiwang@huawei.com>,
	Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v3 1/2] perf script: print raw ip instead of binary offset for callchain
Date: Tue, 11 Apr 2023 12:05:40 +0300	[thread overview]
Message-ID: <27b982f0-22cf-6a74-6ffa-7a3bb58ad3c8@intel.com> (raw)
In-Reply-To: <20230410070858.4051548-2-changbin.du@huawei.com>

On 10/04/23 10:08, Changbin Du wrote:
> Before this, the raw ip is printed for non-callchain and dso offset for
> callchain. This inconsistent output for address may confuse people. And
> mostly what we expect is the raw ip.

This patch does not apply anymore, refer:

	https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/log/?h=perf-tools-next

> 
> 'dso offset' is printed in callchain:
> $ perf script
> ...
> ls 1341034 2739463.008343:    2162417 cycles:
>         ffffffff99d657a7 [unknown] ([unknown])
>         ffffffff99e00b67 [unknown] ([unknown])
>                    235d3 memset+0x53 (/usr/lib/x86_64-linux-gnu/ld-2.31.so)  # dso offset
>                     a61b _dl_map_object+0x1bb (/usr/lib/x86_64-linux-gnu/ld-2.31.so)
> 
> raw ip is printed for non-callchain:
> $ perf script  -G
> 	...
>         ls 1341034 2739463.008876:    2053304 cycles:  ffffffffc1596923 [unknown] ([unknown])
>         ls 1341034 2739463.009381:    1917049 cycles:      14def8e149e6 __strcoll_l+0xd96 (/usr/lib/x86_64-linux-gnu/libc-2.31.so) # raw ip
> 
> Let's have consistent output for it. Later I'll add a new field 'dsoff' to
> print dso offset.
> 
> Signed-off-by: Changbin Du <changbin.du@huawei.com>
> ---
>  tools/perf/util/evsel_fprintf.c | 9 ++-------
>  1 file changed, 2 insertions(+), 7 deletions(-)
> 
> diff --git a/tools/perf/util/evsel_fprintf.c b/tools/perf/util/evsel_fprintf.c
> index bd22c4932d10..1fb8044d402e 100644
> --- a/tools/perf/util/evsel_fprintf.c
> +++ b/tools/perf/util/evsel_fprintf.c
> @@ -153,13 +153,8 @@ int sample__fprintf_callchain(struct perf_sample *sample, int left_alignment,
>  			if (map)
>  				addr = map->map_ip(map, node->ip);
>  
> -			if (print_ip) {
> -				/* Show binary offset for userspace addr */
> -				if (map && !map->dso->kernel)
> -					printed += fprintf(fp, "%c%16" PRIx64, s, addr);
> -				else
> -					printed += fprintf(fp, "%c%16" PRIx64, s, node->ip);
> -			}
> +			if (print_ip)
> +				printed += fprintf(fp, "%c%16" PRIx64, s, node->ip);
>  
>  			if (print_sym) {
>  				printed += fprintf(fp, " ");


  reply	other threads:[~2023-04-11  9:07 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-10  7:08 [PATCH v3 0/2] perf script: Have consistent output for symbol address Changbin Du
2023-04-10  7:08 ` [PATCH v3 1/2] perf script: print raw ip instead of binary offset for callchain Changbin Du
2023-04-11  9:05   ` Adrian Hunter [this message]
2023-04-10  7:08 ` [PATCH v3 2/2] perf: script: add new output field 'dsoff' to print dso offset Changbin Du
2023-04-11  9:15   ` Adrian Hunter
2023-04-14  3:23     ` Changbin Du

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