[CRIU] [PATCH 2/9] opt: cpu-cap -- Introduce "none" and "cpuinfo" arguments

[Cyrill Gorcunov]

They will serve to choose capability level when migrating
images between various hardware nodes.

Note it's bare functionality introduced in this commit,
the real implementation is in next patches.

Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 crtools.c            | 10 +++++++---
 include/cr_options.h |  5 ++++-
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/crtools.c b/crtools.c
index b5f0a76ba866..1857f9f08246 100644
--- a/crtools.c
+++ b/crtools.c
@@ -114,8 +114,12 @@ static int parse_cpu_cap(struct cr_options *opts, const char *optarg)
 
 		if (!strncmp(optarg, "fpu", 3))
 			____cpu_set_cap(opts, CPU_CAP_FPU, inverse);
-		if (!strncmp(optarg, "all", 3))
+		else if (!strncmp(optarg, "all", 3))
 			____cpu_set_cap(opts, CPU_CAP_ALL, inverse);
+		else if (!strncmp(optarg, "none", 3))
+			____cpu_set_cap(opts, CPU_CAP_NONE, inverse);
+		else if (!strncmp(optarg, "cpuinfo", 3))
+			____cpu_set_cap(opts, CPU_CAP_CPUINFO, inverse);
 		else
 			goto Esyntax;
 	}
@@ -561,8 +565,8 @@ usage:
 "     --pidfile FILE     write root task, service or page-server pid to FILE\n"
 "  -W|--work-dir DIR     directory to cd and write logs/pidfiles/stats to\n"
 "                        (if not specified, value of --images-dir is used)\n"
-"     --cpu-cap CAP      require certain cpu capability. CAP: may be one of:\n"
-"                        'fpu','all'. To disable capability, prefix it with '^'.\n"
+"     --cpu-cap [CAP]    require certain cpu capability. CAP: may be one of:\n"
+"                        'cpuinfo','fpu','all','none'. To disable capability, prefix it with '^'.\n"
 "     --exec-cmd         execute the command specified after '--' on successful\n"
 "                        restore making it the parent of the restored process\n"
 "\n"
diff --git a/include/cr_options.h b/include/cr_options.h
index 5a7edd9263db..96f74af7f250 100644
--- a/include/cr_options.h
+++ b/include/cr_options.h
@@ -8,8 +8,11 @@
 /*
  * CPU capability options.
  */
-#define CPU_CAP_FPU		(1u)
+#define CPU_CAP_NONE		(0u)
 #define CPU_CAP_ALL		(-1u)
+#define CPU_CAP_FPU		(1u)		/* Only FPU capability required */
+#define CPU_CAP_CPUINFO		(2u)		/* CPU capability required */
+#define CPU_CAP_DEFAULT		(CPU_CAP_FPU)
 
 struct cg_root_opt {
 	struct list_head node;
-- 
1.9.3