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path: root/tools/testing/selftests/mount/Makefile
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# Makefile for mount selftests.
CFLAGS = -Wall \
         -O2
all: unprivileged-remount-test

unprivileged-remount-test: unprivileged-remount-test.c
	$(CC) $(CFLAGS) unprivileged-remount-test.c -o unprivileged-remount-test

include ../lib.mk

TEST_PROGS := unprivileged-remount-test
override RUN_TESTS := if [ -f /proc/self/uid_map ] ; \
		      then	\
				./unprivileged-remount-test ; \
		      else	\
				echo "WARN: No /proc/self/uid_map exist, test skipped." ; \
		      fi
override EMIT_TESTS := echo "$(RUN_TESTS)"

clean:
	rm -f unprivileged-remount-test
d/hda?id=191e885a2e130e639bb0c8ee350d7047294f2ce6'>191e885a2e130e639bb0c8ee350d7047294f2ce6 (diff)
Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()
Commit a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") added the proper mb(), but removed the test "prev_write_sz < pending_sz" when making the signal decision. As a result, the guest can signal the host unnecessarily, and then the host can throttle the guest because the host thinks the guest is buggy or malicious; finally the user running stress test can perceive intermittent freeze of the guest. This patch brings back the test, and properly handles the in-place consumption APIs used by NetVSC (see get_next_pkt_raw(), put_pkt_raw() and commit_rd_index()). Fixes: a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") Signed-off-by: Dexuan Cui <decui@microsoft.com> Reported-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Tested-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/hda')