[libvirt] [PATCH v2 9/9] cpu-baseline command for virsh

Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com&gt; --- tools/virsh.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ tools/virsh.pod | 8 ++++++ 2 files changed, 80 insertions(+), 0 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index 7db48d9..8337477 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -7025,6 +7025,77 @@ cmdCPUCompare(vshControl *ctl, const vshCmd *cmd) return ret; } +/* + * "cpu-baseline" command + */ +static const vshCmdInfo info_cpu_baseline[] = { + {"help", gettext_noop("compute baseline CPU")}, + {"desc", gettext_noop("Compute baseline CPU for a set of given CPUs.")}, + {NULL, NULL} +}; + +static const vshCmdOptDef opts_cpu_baseline[] = { + {"file", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("file containing XML CPU descriptions")}, + {NULL, 0, 0, NULL} +}; + +static int +cmdCPUBaseline(vshControl *ctl, const vshCmd *cmd) +{ + char *from; + int found; + int ret = TRUE; + char *buffer; + char *p; + char *result = NULL; + const char **list = NULL; + unsigned int count = 0; + + if (!vshConnectionUsability(ctl, ctl->conn, TRUE)) + return FALSE; + + from = vshCommandOptString(cmd, "file", &found); + if (!found) + return FALSE; + + if (virFileReadAll(from, VIRSH_MAX_XML_FILE, &buffer) < 0) + return FALSE; + + p = buffer; + while ((p = strstr(p, "<cpu>"))) { + list = vshRealloc(ctl, list, sizeof(char *) * (count + 1)); + list[count++] = p; + + if ((p = strstr(p, "</cpu>"))) { + p += strlen("</cpu>"); + if (*p != '\0') { + *p = '\0'; + p++; + } + } + } + + if (count == 0) { + vshError(ctl, _("No host CPU specified in '%s'"), from); + ret = FALSE; + goto cleanup; + } + + result = virConnectBaselineCPU(ctl->conn, list, count, 0); + + if (result) + vshPrint(ctl, "%s", result); + else + ret = FALSE; + +cleanup: + VIR_FREE(result); + VIR_FREE(list); + VIR_FREE(buffer); + + return ret; +} + /* Common code for the edit / net-edit / pool-edit functions which follow. */ static char * editWriteToTempFile (vshControl *ctl, const char *doc) @@ -7396,6 +7467,7 @@ static const vshCmdDef commands[] = { #ifndef WIN32 {"console", cmdConsole, opts_console, info_console}, #endif + {"cpu-baseline", cmdCPUBaseline, opts_cpu_baseline, info_cpu_baseline}, {"cpu-compare", cmdCPUCompare, opts_cpu_compare, info_cpu_compare}, {"create", cmdCreate, opts_create, info_create}, {"start", cmdStart, opts_start, info_start}, diff --git a/tools/virsh.pod b/tools/virsh.pod index 10f622f..8f6df19 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -213,6 +213,14 @@ crashed. Prints the available amount of memory on the machine or within a NUMA cell if I<cellno> is provided. +=item B<cpu-baseline> I<FILE> + +Compute baseline CPU which will be supported by all host CPUs given in <file>. +The list of host CPUs is built by extracting all <cpu> elements from the +<file>. Thus, the <file> can contain either a set of <cpu> elements separated +by new lines or even a set of complete <capabilities> elements printed by +B<capabilities> command. + =item B<cpu-compare> I<FILE> Compare CPU definition from XML <file> with host CPU. The XML <file> may -- 1.6.6.1