mir/ovs
2
0
Fork 0
mirror of https://github.com/openvswitch/ovs synced 2025-08-30 13:58:14 +00:00
Code Issues Releases Wiki Activity

dpif-netdev: Remove undefined integer division.

Browse Source 
Clang analyzer will complain about floating point operations conducted
with integer types as rounding is undefined. In pmd_info_show_rxq() a
percentage was calculated inside uint64 integers instead of a floating
pointer variable for a user visible message. This issue can be resolved
simply by casting to double while dividing.

Acked-by: Simon Horman <horms@ovn.org>
Signed-off-by: Mike Pattrick <mkp@redhat.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
This commit is contained in:
Mike Pattrick
2024-09-09 00:54:59 -04:00
committed by Eelco Chaudron
parent e48ba271f4
commit a67db28fd9
1 changed files with 7 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
lib/dpif-netdev.c
View File

@@ -942,9 +942,9 @@ pmd_info_show_rxq(struct ds *reply, struct dp_netdev_pmd_thread *pmd,
? "(enabled) " : "(disabled)");
ds_put_format(reply, " pmd usage: ");
if (total_pmd_cycles) {
ds_put_format(reply, "%2"PRIu64"",
rxq_proc_cycles * 100 / total_pmd_cycles);
ds_put_cstr(reply, " %");
ds_put_format(reply, "%2.0f %%",
(double) (rxq_proc_cycles * 100) /
total_pmd_cycles);
} else {
ds_put_format(reply, "%s", "NOT AVAIL");
}
@@ -959,8 +959,10 @@ pmd_info_show_rxq(struct ds *reply, struct dp_netdev_pmd_thread *pmd,
if (total_rxq_proc_cycles < busy_pmd_cycles) {
overhead_cycles = busy_pmd_cycles - total_rxq_proc_cycles;
}
ds_put_format(reply, "%2"PRIu64" %%",
overhead_cycles * 100 / total_pmd_cycles);
ds_put_format(reply, "%2.0f %%",
(double) (overhead_cycles * 100) /
total_pmd_cycles);
} else {
ds_put_cstr(reply, "NOT AVAIL");
}