#!/bin/bash # # Benchmark script: # - developed for benchmarking ingress qdisc path # # Script for injecting packets into RX path of the stack with pktgen # "xmit_mode netif_receive". With an invalid dst_mac this will only # measure the ingress code path as packets gets dropped in ip_rcv(). # # This script don't really need any hardware. It benchmarks software # RX path just after NIC driver level. With bursting is also # "removes" the SKB alloc/free overhead. # # Setup scenarios for measuring ingress qdisc (with invalid dst_mac): # ------------------------------------------------------------------ # (1) no ingress (uses static_key_false(&ingress_needed)) # # (2) ingress on other dev (change ingress_needed and calls # handle_ing() but exit early) # # config: tc qdisc add dev $SOMEDEV handle ffff: ingress # # (3) ingress on this dev, handle_ing() -> tc_classify() # # config: tc qdisc add dev $DEV handle ffff: ingress # # (4) ingress on this dev + drop at u32 classifier/action. # basedir=`dirname $0` source ${basedir}/functions.sh root_check_run_with_sudo "$@" # Parameter parsing via include source ${basedir}/parameters.sh # Using invalid DST_MAC will cause the packets to get dropped in # ip_rcv() which is part of the test if [ -z "$DEST_IP" ]; then [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1" fi [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff" [ -z "$BURST" ] && BURST=1024 # Base Config DELAY="0" # Zero means max speed COUNT="10000000" # Zero means indefinitely # General cleanup everything since last run pg_ctrl "reset" # Threads are specified with parameter -t value in $THREADS for ((thread = 0; thread < $THREADS; thread++)); do # The device name is extended with @name, using thread number to # make then unique, but any name will do. dev=${DEV}@${thread} # Add remove all other devices and add_device $dev to thread pg_thread $thread "rem_device_all" pg_thread $thread "add_device" $dev # Base config of dev pg_set $dev "flag QUEUE_MAP_CPU" pg_set $dev "count $COUNT" pg_set $dev "pkt_size $PKT_SIZE" pg_set $dev "delay $DELAY" pg_set $dev "flag NO_TIMESTAMP" # Destination pg_set $dev "dst_mac $DST_MAC" pg_set $dev "dst$IP6 $DEST_IP" # Inject packet into RX path of stack pg_set $dev "xmit_mode netif_receive" # Burst allow us to avoid measuring SKB alloc/free overhead pg_set $dev "burst $BURST" done # start_run echo "Running... ctrl^C to stop" >&2 pg_ctrl "start" echo "Done" >&2 # Print results for ((thread = 0; thread < $THREADS; thread++)); do dev=${DEV}@${thread} echo "Device: $dev" cat /proc/net/pktgen/$dev | grep -A2 "Result:" done
path: root/drivers/usb/gadget
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authorStanislaw Gruszka <sgruszka@redhat.com>2017-01-29 12:40:52 +0100
committerKalle Valo <kvalo@codeaurora.org>2017-01-31 09:08:52 +0200
commit33e962c8871f015f5c8978384553dddcf5b81b22 (patch)
tree43aff96c2ee21d9e0fa2018457778a4de52053cd /drivers/usb/gadget
parent575ddce0507789bf9830d089557d2199d2f91865 (diff)
rt2x00: fix clk_get call
clk_get() takes two arguments and might return ERR_PTR(), so we have to nullify pointer on that case, to do not break further call to clk_get_rate(). Reported-by: Felix Fietkau <nbd@nbd.name> Fixes: 34db70b92fae ("rt2x00: add copy of clk for soc devices") Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/usb/gadget')