From: Jiri Olsa <jolsa@redhat.com>
To: kan.liang@intel.com
Cc: acme@kernel.org, a.p.zijlstra@chello.nl, eranian@google.com,
linux-kernel@vger.kernel.org, mingo@redhat.com, paulus@samba.org,
ak@linux.intel.com
Subject: Re: [PATCH 1/2] perf tools: enable LBR call stack support
Date: Wed, 12 Nov 2014 08:50:26 +0100 [thread overview]
Message-ID: <20141112075026.GA22994@krava> (raw)
In-Reply-To: <1415285886-16949-2-git-send-email-kan.liang@intel.com>
On Thu, Nov 06, 2014 at 09:58:05AM -0500, kan.liang@intel.com wrote:
SNIP
> (sample_type & PERF_SAMPLE_STACK_USER))
> callchain_param.record_mode = CALLCHAIN_DWARF;
> + else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
> + callchain_param.record_mode = CALLCHAIN_LBR;
> else
> callchain_param.record_mode = CALLCHAIN_FP;
> }
> diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
> index 0022980..72ed39b 100644
> --- a/tools/perf/util/callchain.c
> +++ b/tools/perf/util/callchain.c
> @@ -97,6 +97,14 @@ int parse_callchain_record_opt(const char *arg)
> callchain_param.dump_size = size;
> }
> #endif /* HAVE_DWARF_UNWIND_SUPPORT */
> + } else if (!strncmp(name, "lbr", sizeof("lbr"))) {
> + if (!strtok_r(NULL, ",", &saveptr)) {
> + callchain_param.record_mode = CALLCHAIN_LBR;
> + ret = 0;
> + } else
> + pr_err("callchain: No more arguments "
> + "needed for -g lbr\n");
should it be 'needed for --call-graph' option? ^^^^^^^^^^^
jirka
next prev parent reply other threads:[~2014-11-12 7:50 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-06 14:58 [PATCH 0/2] perf tool: Haswell LBR call stack support (user) kan.liang
2014-11-06 14:58 ` [PATCH 1/2] perf tools: enable LBR call stack support kan.liang
2014-11-12 7:50 ` Jiri Olsa [this message]
2014-11-12 7:50 ` Jiri Olsa
2014-11-12 14:44 ` Liang, Kan
2014-11-06 14:58 ` [PATCH 2/2] perf tools: Construct LBR call chain kan.liang
2014-11-12 8:58 ` Jiri Olsa
2014-11-12 8:58 ` Jiri Olsa
2014-11-12 8:59 ` Jiri Olsa
2014-11-12 14:37 ` Liang, Kan
2014-11-12 15:05 ` Peter Zijlstra
2014-11-12 18:31 ` Jiri Olsa
2014-11-12 12:33 ` Jiri Olsa
2014-11-10 10:54 ` [PATCH 0/2] perf tool: Haswell LBR call stack support (user) Peter Zijlstra
2014-11-10 14:08 ` Liang, Kan
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