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From: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Andi Kleen <ak@linux.intel.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Alexander Antonov <alexander.antonov@linux.intel.com>,
	Alexei Budankov <abudankov@huawei.com>,
	Riccardo Mancini <rickyman7@gmail.com>
Subject: [PATCH v10 02/24] tools lib: Introduce fdarray duplicate function
Date: Mon, 12 Jul 2021 09:46:02 +0300	[thread overview]
Message-ID: <53c92dce8b1af4863674f57ad7e732d7108e48e1.1626072008.git.alexey.v.bayduraev@linux.intel.com> (raw)
In-Reply-To: <cover.1626072008.git.alexey.v.bayduraev@linux.intel.com>

Introduce a function to duplicate an existing file descriptor in
the fdarray structure. The function returns the position of the duplicated
file descriptor.

Acked-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
---
 tools/lib/api/fd/array.c | 17 +++++++++++++++++
 tools/lib/api/fd/array.h |  1 +
 2 files changed, 18 insertions(+)

diff --git a/tools/lib/api/fd/array.c b/tools/lib/api/fd/array.c
index 5e6cb9debe37..f0f195207fca 100644
--- a/tools/lib/api/fd/array.c
+++ b/tools/lib/api/fd/array.c
@@ -88,6 +88,23 @@ int fdarray__add(struct fdarray *fda, int fd, short revents, enum fdarray_flags
 	return pos;
 }
 
+int fdarray__dup_entry_from(struct fdarray *fda, int pos, struct fdarray *from)
+{
+	struct pollfd *entry;
+	int npos;
+
+	if (pos >= from->nr)
+		return -EINVAL;
+
+	entry = &from->entries[pos];
+
+	npos = fdarray__add(fda, entry->fd, entry->events, from->priv[pos].flags);
+	if (npos >= 0)
+		fda->priv[npos] = from->priv[pos];
+
+	return npos;
+}
+
 int fdarray__filter(struct fdarray *fda, short revents,
 		    void (*entry_destructor)(struct fdarray *fda, int fd, void *arg),
 		    void *arg)
diff --git a/tools/lib/api/fd/array.h b/tools/lib/api/fd/array.h
index 7fcf21a33c0c..60ad197c8ee9 100644
--- a/tools/lib/api/fd/array.h
+++ b/tools/lib/api/fd/array.h
@@ -42,6 +42,7 @@ struct fdarray *fdarray__new(int nr_alloc, int nr_autogrow);
 void fdarray__delete(struct fdarray *fda);
 
 int fdarray__add(struct fdarray *fda, int fd, short revents, enum fdarray_flags flags);
+int fdarray__dup_entry_from(struct fdarray *fda, int pos, struct fdarray *from);
 int fdarray__poll(struct fdarray *fda, int timeout);
 int fdarray__filter(struct fdarray *fda, short revents,
 		    void (*entry_destructor)(struct fdarray *fda, int fd, void *arg),
-- 
2.19.0


  parent reply	other threads:[~2021-07-12  7:09 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-12  6:46 [PATCH v10 00/24] Introduce threaded trace streaming for basic perf record operation Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 01/24] perf record: Introduce thread affinity and mmap masks Alexey Bayduraev
2021-07-12  6:46 ` Alexey Bayduraev [this message]
2021-07-12  6:46 ` [PATCH v10 03/24] perf record: Introduce thread specific data array Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 04/24] perf record: Introduce function to propagate control commands Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 05/24] perf record: Introduce thread local variable Alexey Bayduraev
2021-09-12 20:43   ` Jiri Olsa
2021-09-12 20:45   ` Jiri Olsa
2021-09-12 20:45   ` Jiri Olsa
2021-09-12 20:45   ` Jiri Olsa
2021-07-12  6:46 ` [PATCH v10 06/24] perf record: Stop threads in the end of trace streaming Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 07/24] perf record: Start threads in the beginning " Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 08/24] perf record: Introduce data file at mmap buffer object Alexey Bayduraev
2021-08-11 17:24   ` Riccardo Mancini
2021-07-12  6:46 ` [PATCH v10 09/24] perf record: Introduce bytes written stats to support --max-size option Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 10/24] perf record: Introduce data transferred and compressed stats Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 11/24] perf record: Init data file at mmap buffer object Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 12/24] perf record: Introduce --threads command line option Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 13/24] perf record: Extend " Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 14/24] perf record: Implement compatibility checks Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 15/24] perf report: Output non-zero offset for decompressed records Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 16/24] perf report: Output data file name in raw trace dump Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 17/24] perf session: Move reader structure to the top Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 18/24] perf session: Introduce reader_state in reader object Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 19/24] perf session: Introduce reader objects in session object Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 20/24] perf session: Introduce decompressor into trace reader object Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 21/24] perf session: Move init into reader__init function Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 22/24] perf session: Move map/unmap into reader__mmap function Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 23/24] perf session: Load single file for analysis Alexey Bayduraev
2021-07-12  6:46 ` [PATCH v10 24/24] perf session: Load data directory files " Alexey Bayduraev
2021-08-11 17:45 ` [PATCH v10 00/24] Introduce threaded trace streaming for basic perf record operation Riccardo Mancini

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