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From 0ce0152d8e29f85325a3a59f94051228540abf6a Mon Sep 17 00:00:00 2001
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From: Dan Williams <dan.j.williams@intel.com>
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Date: Sun, 23 Jan 2022 16:52:20 -0800
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Subject: [PATCH 092/217] cxl/list: Support multiple memdev device name filter
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arguments
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Similar to 'ndctl list', allow for a syntax like:
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cxl list -m "$(seq -s ' ' 2 5)"
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...to filter the output to just those 4 memdevs.
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Link: https://lore.kernel.org/r/164298554075.3021641.17678360870961637912.stgit@dwillia2-desk3.amr.corp.intel.com
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Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
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---
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Documentation/cxl/cxl-list.txt | 21 ++++++++++++++++++-
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cxl/filter.c | 38 ++++++++++++++++++++++++----------
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2 files changed, 47 insertions(+), 12 deletions(-)
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diff --git a/Documentation/cxl/cxl-list.txt b/Documentation/cxl/cxl-list.txt
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index c8d10fb..686e0ea 100644
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--- a/Documentation/cxl/cxl-list.txt
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+++ b/Documentation/cxl/cxl-list.txt
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@@ -30,7 +30,7 @@ OPTIONS
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-------
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-m::
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--memdev=::
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- Specify a cxl memory device name to filter the listing. For example:
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+ Specify CXL memory device name(s), or device id(s), to filter the listing. For example:
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----
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# cxl list --memdev=mem0
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{
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@@ -38,6 +38,25 @@ OPTIONS
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"pmem_size":268435456,
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"ram_size":0,
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}
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+
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+# cxl list -m "0 mem1 2"
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+[
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+ {
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+ "memdev":"mem0",
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+ "pmem_size":268435456,
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+ "ram_size":0
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+ },
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+ {
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+ "memdev":"mem2",
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+ "pmem_size":268435456,
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+ "ram_size":268435456
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+ },
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+ {
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+ "memdev":"mem1",
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+ "pmem_size":268435456,
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+ "ram_size":268435456
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+ }
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+]
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----
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-M::
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diff --git a/cxl/filter.c b/cxl/filter.c
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index 21322ed..efafaf5 100644
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--- a/cxl/filter.c
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+++ b/cxl/filter.c
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@@ -2,24 +2,40 @@
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// Copyright (C) 2015-2020 Intel Corporation. All rights reserved.
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#include <stdio.h>
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#include <string.h>
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+#include <stdlib.h>
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#include <cxl/libcxl.h>
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#include "filter.h"
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struct cxl_memdev *util_cxl_memdev_filter(struct cxl_memdev *memdev,
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- const char *ident)
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+ const char *__ident)
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{
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- int memdev_id;
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+ char *ident, *save;
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+ const char *name;
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+ int memdev_id;
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- if (!ident || strcmp(ident, "all") == 0)
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- return memdev;
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+ if (!__ident)
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+ return memdev;
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- if (strcmp(ident, cxl_memdev_get_devname(memdev)) == 0)
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- return memdev;
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+ ident = strdup(__ident);
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+ if (!ident)
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+ return NULL;
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- if ((sscanf(ident, "%d", &memdev_id) == 1
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- || sscanf(ident, "mem%d", &memdev_id) == 1)
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- && cxl_memdev_get_id(memdev) == memdev_id)
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- return memdev;
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+ for (name = strtok_r(ident, " ", &save); name;
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+ name = strtok_r(NULL, " ", &save)) {
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+ if (strcmp(name, "all") == 0)
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+ break;
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- return NULL;
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+ if ((sscanf(name, "%d", &memdev_id) == 1 ||
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+ sscanf(name, "mem%d", &memdev_id) == 1) &&
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+ cxl_memdev_get_id(memdev) == memdev_id)
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+ break;
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+
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+ if (strcmp(name, cxl_memdev_get_devname(memdev)) == 0)
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+ break;
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+ }
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+
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+ free(ident);
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+ if (name)
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+ return memdev;
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+ return NULL;
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}
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--
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2.27.0
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