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From c09c507e5a608718ac96af088fdc8cb441b09d0b 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 16:54:06 -0800
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Subject: [PATCH 112/217] cxl/memdev: Add serial support for memdev-related
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commands
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Allow for a "-s, --serial" option to turn the argument list into serial
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identifiers.
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Link: https://lore.kernel.org/r/164298564631.3021641.5552442288217413180.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/memdev-option.txt | 5 ++++
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Documentation/cxl/meson.build | 4 ++-
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cxl/memdev.c | 45 +++++++++++++++++++++--------
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3 files changed, 41 insertions(+), 13 deletions(-)
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diff --git a/Documentation/cxl/memdev-option.txt b/Documentation/cxl/memdev-option.txt
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index e778582..64348be 100644
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--- a/Documentation/cxl/memdev-option.txt
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+++ b/Documentation/cxl/memdev-option.txt
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@@ -2,3 +2,8 @@
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A 'memX' device name, or a memdev id number. Restrict the operation to
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the specified memdev(s). The keyword 'all' can be specified to indicate
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the lack of any restriction.
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+
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+-S::
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+--serial::
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+ Rather an a memdev id number, interpret the <memdev> argument(s)
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+ as a list of serial numbers.
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diff --git a/Documentation/cxl/meson.build b/Documentation/cxl/meson.build
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index 64ce13f..0a6346b 100644
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--- a/Documentation/cxl/meson.build
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+++ b/Documentation/cxl/meson.build
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@@ -19,7 +19,9 @@ else
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endif
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filedeps = [
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- '../copyright.txt',
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+ '../copyright.txt',
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+ 'memdev-option.txt',
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+ 'labels-options.txt',
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]
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cxl_manpages = [
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diff --git a/cxl/memdev.c b/cxl/memdev.c
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index 4cca8b8..ef5343a 100644
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--- a/cxl/memdev.c
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+++ b/cxl/memdev.c
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@@ -24,12 +24,14 @@ static struct parameters {
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unsigned len;
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unsigned offset;
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bool verbose;
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+ bool serial;
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} param;
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static struct log_ctx ml;
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#define BASE_OPTIONS() \
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-OPT_BOOLEAN('v',"verbose", ¶m.verbose, "turn on debug")
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+OPT_BOOLEAN('v',"verbose", ¶m.verbose, "turn on debug"), \
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+OPT_BOOLEAN('S', "serial", ¶m.serial, "user serials numbers to id memdevs")
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#define READ_OPTIONS() \
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OPT_STRING('o', "output", ¶m.outfile, "output-file", \
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@@ -172,8 +174,9 @@ out:
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}
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static int memdev_action(int argc, const char **argv, struct cxl_ctx *ctx,
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- int (*action)(struct cxl_memdev *memdev, struct action_context *actx),
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- const struct option *options, const char *usage)
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+ int (*action)(struct cxl_memdev *memdev,
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+ struct action_context *actx),
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+ const struct option *options, const char *usage)
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{
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struct cxl_memdev *memdev, *single = NULL;
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struct action_context actx = { 0 };
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@@ -190,16 +193,25 @@ static int memdev_action(int argc, const char **argv, struct cxl_ctx *ctx,
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if (argc == 0)
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usage_with_options(u, options);
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for (i = 0; i < argc; i++) {
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- if (strcmp(argv[i], "all") == 0) {
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- argc = 1;
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- break;
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+ if (param.serial) {
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+ char *end;
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+
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+ strtoull(argv[i], &end, 0);
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+ if (end[0] == 0)
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+ continue;
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+ } else {
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+ if (strcmp(argv[i], "all") == 0) {
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+ argc = 1;
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+ break;
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+ }
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+ if (sscanf(argv[i], "mem%lu", &id) == 1)
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+ continue;
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+ if (sscanf(argv[i], "%lu", &id) == 1)
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+ continue;
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}
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- if (sscanf(argv[i], "mem%lu", &id) == 1)
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- continue;
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- if (sscanf(argv[i], "%lu", &id) == 1)
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- continue;
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- log_err(&ml, "'%s' is not a valid memdev name\n", argv[i]);
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+ log_err(&ml, "'%s' is not a valid memdev %s\n", argv[i],
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+ param.serial ? "serial number" : "name");
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err++;
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}
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@@ -244,7 +256,16 @@ static int memdev_action(int argc, const char **argv, struct cxl_ctx *ctx,
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for (i = 0; i < argc; i++) {
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cxl_memdev_foreach(ctx, memdev) {
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- if (!util_cxl_memdev_filter(memdev, argv[i], NULL))
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+ const char *memdev_filter = NULL;
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+ const char *serial_filter = NULL;
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+
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+ if (param.serial)
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+ serial_filter = argv[i];
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+ else
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+ memdev_filter = argv[i];
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+
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+ if (!util_cxl_memdev_filter(memdev, memdev_filter,
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+ serial_filter))
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continue;
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if (action == action_write) {
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--
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2.27.0
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