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Message-ID: <158755783453.28353.8426037370722698037.tip-bot2@tip-bot2>
Date: Wed, 22 Apr 2020 12:17:14 -0000
From: "tip-bot2 for Kan Liang" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Kan Liang <kan.liang@...ux.intel.com>,
Andi Kleen <ak@...ux.intel.com>, Jiri Olsa <jolsa@...hat.com>,
Adrian Hunter <adrian.hunter@...el.com>,
Alexey Budankov <alexey.budankov@...ux.intel.com>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Michael Ellerman <mpe@...erman.id.au>,
Namhyung Kim <namhyung@...nel.org>,
Pavel Gerasimov <pavel.gerasimov@...el.com>,
Peter Zijlstra <peterz@...radead.org>,
Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
Stephane Eranian <eranian@...gle.com>,
Vitaly Slobodskoy <vitaly.slobodskoy@...el.com>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
x86 <x86@...nel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: [tip: perf/core] perf machine: Factor out lbr_callchain_add_kernel_ip()
The following commit has been merged into the perf/core branch of tip:
Commit-ID: dd3e249a0c0ad88098922803b149c788bb364c23
Gitweb: https://git.kernel.org/tip/dd3e249a0c0ad88098922803b149c788bb364c23
Author: Kan Liang <kan.liang@...ux.intel.com>
AuthorDate: Thu, 19 Mar 2020 13:25:07 -07:00
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitterDate: Sat, 18 Apr 2020 09:05:00 -03:00
perf machine: Factor out lbr_callchain_add_kernel_ip()
Both caller and callee needs to add kernel ip to callchain. Factor out
lbr_callchain_add_kernel_ip() to improve code readability.
Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
Reviewed-by: Andi Kleen <ak@...ux.intel.com>
Acked-by: Jiri Olsa <jolsa@...hat.com>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Alexey Budankov <alexey.budankov@...ux.intel.com>
Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Pavel Gerasimov <pavel.gerasimov@...el.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Vitaly Slobodskoy <vitaly.slobodskoy@...el.com>
Link: http://lore.kernel.org/lkml/20200319202517.23423-8-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/util/machine.c | 67 +++++++++++++++++++++++++-------------
1 file changed, 45 insertions(+), 22 deletions(-)
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 0da540e..a7f75fd 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -2190,6 +2190,40 @@ static int remove_loops(struct branch_entry *l, int nr,
return nr;
}
+static int lbr_callchain_add_kernel_ip(struct thread *thread,
+ struct callchain_cursor *cursor,
+ struct perf_sample *sample,
+ struct symbol **parent,
+ struct addr_location *root_al,
+ u64 branch_from,
+ bool callee, int end)
+{
+ struct ip_callchain *chain = sample->callchain;
+ u8 cpumode = PERF_RECORD_MISC_USER;
+ int err, i;
+
+ if (callee) {
+ for (i = 0; i < end + 1; i++) {
+ err = add_callchain_ip(thread, cursor, parent,
+ root_al, &cpumode, chain->ips[i],
+ false, NULL, NULL, branch_from);
+ if (err)
+ return err;
+ }
+ return 0;
+ }
+
+ for (i = end; i >= 0; i--) {
+ err = add_callchain_ip(thread, cursor, parent,
+ root_al, &cpumode, chain->ips[i],
+ false, NULL, NULL, branch_from);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
/*
* Recolve LBR callstack chain sample
* Return:
@@ -2242,17 +2276,12 @@ static int resolve_lbr_callchain_sample(struct thread *thread,
if (callchain_param.order == ORDER_CALLEE) {
/* Add kernel ip */
- for (j = 0; j < i + 1; j++) {
- ip = chain->ips[j];
- branch = false;
- flags = NULL;
- err = add_callchain_ip(thread, cursor, parent,
- root_al, &cpumode, ip,
- branch, flags, NULL,
- branch_from);
- if (err)
- goto error;
- }
+ err = lbr_callchain_add_kernel_ip(thread, cursor, sample,
+ parent, root_al, branch_from,
+ true, i);
+ if (err)
+ goto error;
+
/* Add LBR ip from first entries.to */
ip = entries[0].to;
branch = true;
@@ -2308,17 +2337,11 @@ static int resolve_lbr_callchain_sample(struct thread *thread,
goto error;
/* Add kernel ip */
- for (j = lbr_nr + 1; j < mix_chain_nr; j++) {
- ip = chain->ips[i + 1 - (j - lbr_nr)];
- branch = false;
- flags = NULL;
- err = add_callchain_ip(thread, cursor, parent,
- root_al, &cpumode, ip,
- branch, flags, NULL,
- branch_from);
- if (err)
- goto error;
- }
+ err = lbr_callchain_add_kernel_ip(thread, cursor, sample,
+ parent, root_al, branch_from,
+ false, i);
+ if (err)
+ goto error;
}
return 1;
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