From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: xen-devel@lists.xenproject.org, Ian.Campbell@citrix.com,
ian.jackson@eu.citrix.com, wei.liu2@citrix.com
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: [PATCH 3/4] libxl: vcpuset: Remove useless limit on max_vcpus.
Date: Mon, 2 Feb 2015 15:47:48 -0500 [thread overview]
Message-ID: <1422910069-15760-4-git-send-email-konrad.wilk@oracle.com> (raw)
In-Reply-To: <1422910069-15760-1-git-send-email-konrad.wilk@oracle.com>
The check is superflous. If the 'max_vcpus' (argument
value) is greater than pCPU and --ignore-host has not
been supplied we would print an warning and return
and not call this code.
If the --ignore-host parameter had been used we would
never end up in this condition and enforce 'max_vcpus'.
The only time it would be invoked is if max_vcpus < host_cpu
in which case it would set max_vcpus to max_vcpus.
In short - it is dead code.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
tools/libxl/xl_cmdimpl.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index d22ba85..9e2d1b2 100644
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -5053,8 +5053,6 @@ static int vcpuset(uint32_t domid, const char* nr_vcpus, int check_host)
" continue\n", host_cpu, max_vcpus);
return -ERROR_INVAL;
}
- /* NB: This also limits how many are set in the bitmap */
- max_vcpus = (max_vcpus > host_cpu ? host_cpu : max_vcpus);
}
rc = libxl_cpu_bitmap_alloc(ctx, &cpumap, max_vcpus);
if (rc) {
--
1.8.4.2
next prev parent reply other threads:[~2015-02-02 20:48 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-04 13:33 [PATCH v1] Misc fixes to libxl (v1) Konrad Rzeszutek Wilk
2014-06-04 13:33 ` [PATCH v1 1/2] libxl: give pciback a chance to do its teardown before we reset the device Konrad Rzeszutek Wilk
2014-06-05 10:58 ` Ian Campbell
2014-06-05 17:41 ` Konrad Rzeszutek Wilk
2014-06-05 17:56 ` Ian Jackson
2014-06-06 9:07 ` Ian Campbell
2014-06-04 13:33 ` [PATCH v1 2/2] libxl: vcpu-set - allow to decrease vcpu count on overcommitted guests (v2) Konrad Rzeszutek Wilk
2014-06-05 11:02 ` Ian Campbell
2014-06-05 17:44 ` Konrad Rzeszutek Wilk
2014-06-06 9:07 ` Ian Campbell
2015-02-02 20:47 ` Konrad Rzeszutek Wilk
2015-02-02 20:47 ` [PATCH 1/4] libxl: vcpuset: Return error values Konrad Rzeszutek Wilk
2015-02-03 11:29 ` Ian Jackson
2015-02-02 20:47 ` [PATCH 2/4] libxl: vcpuset: Check max_vcpus argument against the maximum number of vCPUs the guest has set Konrad Rzeszutek Wilk
2015-02-03 15:11 ` Ian Jackson
2015-02-03 15:45 ` Konrad Rzeszutek Wilk
2015-03-11 10:56 ` Ian Campbell
2015-02-02 20:47 ` Konrad Rzeszutek Wilk [this message]
2015-02-02 20:47 ` [PATCH 4/4] libxl: vcpu-set - allow to decrease vcpu count on overcommitted guests (v3) Konrad Rzeszutek Wilk
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