From: Riccardo Mancini <rickyman7@gmail.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Ian Rogers <irogers@google.com>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Mark Rutland <mark.rutland@arm.com>, Jiri Olsa <jolsa@redhat.com>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Riccardo Mancini <rickyman7@gmail.com>
Subject: [RFC PATCH v1 29/37] perf evlist: add custom fallback to evlist__open
Date: Sat, 21 Aug 2021 11:19:35 +0200 [thread overview]
Message-ID: <6109f52f83bbb9d6782969a5e6fc66f5cab7abd8.1629490974.git.rickyman7@gmail.com> (raw)
In-Reply-To: <cover.1629490974.git.rickyman7@gmail.com>
This patch adds the function evlist__open_custom, which makes it possible
to provide a custom fallback mechanism to evsel__open.
This function will be used in record__open in the following patch.
This could also be used to adapt perf-stat way of opening to the new
multithreaded mechanism.
Signed-off-by: Riccardo Mancini <rickyman7@gmail.com>
---
tools/perf/util/evlist.c | 27 +++++++++++++++++++++------
tools/perf/util/evlist.h | 9 +++++++++
2 files changed, 30 insertions(+), 6 deletions(-)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 3472038d719ec7d4..22b9607dcc637a2d 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -1405,15 +1405,20 @@ static int evlist__create_syswide_maps(struct evlist *evlist)
return err;
}
-static int evlist__open_singlethreaded(struct evlist *evlist)
+static int evlist__open_singlethreaded(struct evlist *evlist,
+ struct evlist_open_custom_fallback *cust_fb)
{
struct evsel *evsel;
int err;
evlist__for_each_entry(evlist, evsel) {
+try_again:
err = evsel__open(evsel, evsel->core.cpus, evsel->core.threads);
- if (err < 0)
+ if (err < 0) {
+ if (cust_fb && cust_fb->func(cust_fb, evlist, evsel, err))
+ goto try_again;
return err;
+ }
}
return 0;
@@ -1469,7 +1474,8 @@ static void evlist__open_multithreaded_func(struct work_struct *_work)
}
}
-static int evlist__open_multithreaded(struct evlist *evlist)
+static int evlist__open_multithreaded(struct evlist *evlist,
+ struct evlist_open_custom_fallback *cust_fb)
{
int cpu, cpuid, cpuidx, thread, err;
struct evlist_open_work *works;
@@ -1567,6 +1573,9 @@ static int evlist__open_multithreaded(struct evlist *evlist)
if (evsel__detect_missing_features(evsel))
goto reprepare;
+ if (cust_fb && cust_fb->func(cust_fb, evlist, evsel, err))
+ goto reprepare;
+
// no fallback worked, return the error
goto out;
}
@@ -1579,7 +1588,8 @@ static int evlist__open_multithreaded(struct evlist *evlist)
return err;
}
-int evlist__open(struct evlist *evlist)
+int evlist__open_custom(struct evlist *evlist,
+ struct evlist_open_custom_fallback *cust_fb)
{
int err;
@@ -1596,9 +1606,9 @@ int evlist__open(struct evlist *evlist)
evlist__update_id_pos(evlist);
if (perf_singlethreaded)
- err = evlist__open_singlethreaded(evlist);
+ err = evlist__open_singlethreaded(evlist, cust_fb);
else
- err = evlist__open_multithreaded(evlist);
+ err = evlist__open_multithreaded(evlist, cust_fb);
if (err)
goto out_err;
@@ -1610,6 +1620,11 @@ int evlist__open(struct evlist *evlist)
return err;
}
+int evlist__open(struct evlist *evlist)
+{
+ return evlist__open_custom(evlist, NULL);
+}
+
int evlist__prepare_workload(struct evlist *evlist, struct target *target, const char *argv[],
bool pipe_output, void (*exec_error)(int signo, siginfo_t *info, void *ucontext))
{
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index b0c2da0f9755b2d1..cb753b4c4e70b4ba 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -161,6 +161,15 @@ void evlist__mmap_consume(struct evlist *evlist, int idx);
int evlist__open(struct evlist *evlist);
void evlist__close(struct evlist *evlist);
+struct evlist_open_custom_fallback;
+typedef bool (*evlist_open_custom_fallback_fn)(struct evlist_open_custom_fallback *fallback,
+ struct evlist *evlist, struct evsel *evsel, int err);
+struct evlist_open_custom_fallback {
+ evlist_open_custom_fallback_fn func;
+};
+int evlist__open_custom(struct evlist *evlist, struct evlist_open_custom_fallback *cust_fb);
+
+
struct callchain_param;
void evlist__set_id_pos(struct evlist *evlist);
--
2.31.1
next prev parent reply other threads:[~2021-08-21 9:22 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-21 9:19 [RFC PATCH v1 00/37] perf: use workqueue for evlist operations Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 01/37] libperf cpumap: improve idx function Riccardo Mancini
2021-08-31 18:46 ` Arnaldo Carvalho de Melo
2021-10-08 14:29 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 02/37] libperf cpumap: improve max function Riccardo Mancini
2021-08-31 18:47 ` Arnaldo Carvalho de Melo
2021-08-31 19:16 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 03/37] perf evlist: replace evsel__cpu_iter* functions with evsel__find_cpu Riccardo Mancini
2021-10-08 14:38 ` [RFC PATCH v1 03/37] perf evlist: replace evsel__cpu_iter* functions with evsel__find_cpu() Arnaldo Carvalho de Melo
2021-12-11 0:20 ` [RFC PATCH v1 03/37] perf evlist: replace evsel__cpu_iter* functions with evsel__find_cpu Ian Rogers
2021-08-21 9:19 ` [RFC PATCH v1 04/37] perf util: add mmap_cpu_mask__duplicate function Riccardo Mancini
2021-08-31 19:21 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 05/37] perf util/mmap: add missing bitops.h header Riccardo Mancini
2021-08-31 19:22 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 06/37] perf workqueue: add affinities to threadpool Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 07/37] perf workqueue: add support for setting affinities to workers Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 08/37] perf workqueue: add method to execute work on specific CPU Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 09/37] perf python: add workqueue dependency Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 10/37] perf evlist: add multithreading helper Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 11/37] perf evlist: add multithreading to evlist__disable Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 12/37] perf evlist: add multithreading to evlist__enable Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 13/37] perf evlist: add multithreading to evlist__close Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 14/37] perf evsel: remove retry_sample_id goto label Riccardo Mancini
2021-08-31 19:25 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 15/37] perf evsel: separate open preparation from open itself Riccardo Mancini
2021-08-31 19:27 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 16/37] perf evsel: save open flags in evsel Riccardo Mancini
2021-08-31 19:31 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 17/37] perf evsel: separate missing feature disabling from evsel__open_cpu Riccardo Mancini
2021-08-31 19:35 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 18/37] perf evsel: add evsel__prepare_open function Riccardo Mancini
2021-08-31 19:36 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 19/37] perf evsel: separate missing feature detection from evsel__open_cpu Riccardo Mancini
2021-08-31 19:39 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 20/37] perf evsel: separate rlimit increase " Riccardo Mancini
2021-08-31 19:41 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 21/37] perf evsel: move ignore_missing_thread to fallback code Riccardo Mancini
2021-08-31 19:44 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 22/37] perf evsel: move test_attr__open to success path in evsel__open_cpu Riccardo Mancini
2021-08-31 19:47 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 23/37] perf evsel: move bpf_counter__install_pe " Riccardo Mancini
2021-08-31 19:50 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 24/37] perf evsel: handle precise_ip fallback " Riccardo Mancini
2021-08-31 19:52 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 25/37] perf evsel: move event open in evsel__open_cpu to separate function Riccardo Mancini
2021-08-31 19:54 ` Arnaldo Carvalho de Melo
2021-09-03 21:52 ` Riccardo Mancini
2021-09-11 19:10 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 26/37] perf evsel: add evsel__open_per_cpu_no_fallback function Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 27/37] perf evlist: add evlist__for_each_entry_from macro Riccardo Mancini
2021-08-31 20:06 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 28/37] perf evlist: add multithreading to evlist__open Riccardo Mancini
2021-08-21 9:19 ` Riccardo Mancini [this message]
2021-08-21 9:19 ` [RFC PATCH v1 30/37] perf record: use evlist__open_custom Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 31/37] tools lib/subcmd: add OPT_UINTEGER_OPTARG option type Riccardo Mancini
2021-08-31 18:44 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 32/37] perf record: add --threads option Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 33/37] perf record: pin threads to monitored cpus if enough threads available Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 34/37] perf record: apply multithreading in init and fini phases Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 35/37] perf test/evlist-open-close: add multithreading Riccardo Mancini
2021-08-21 9:19 ` [RFC PATCH v1 36/37] perf test/evlist-open-close: use inline func to convert timeval to usec Riccardo Mancini
2021-10-08 14:46 ` Arnaldo Carvalho de Melo
2021-08-21 9:19 ` [RFC PATCH v1 37/37] perf test/evlist-open-close: add detailed output mode Riccardo Mancini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=6109f52f83bbb9d6782969a5e6fc66f5cab7abd8.1629490974.git.rickyman7@gmail.com \
--to=rickyman7@gmail.com \
--cc=acme@kernel.org \
--cc=irogers@google.com \
--cc=jolsa@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-perf-users@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=mingo@redhat.com \
--cc=namhyung@kernel.org \
--cc=peterz@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).