D40049.id122633.diff
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	diff --git a/lib/libpmc/libpmc.c b/lib/libpmc/libpmc.c
	--- a/lib/libpmc/libpmc.c
	+++ b/lib/libpmc/libpmc.c
	@@ -1195,6 +1195,7 @@
	{
	struct pmc_op_configurelog cla;

	+ cla.pm_flags = 0;
	cla.pm_logfd = fd;
	if (PMC_CALL(CONFIGURELOG, &cla) < 0)
	return (-1);
	diff --git a/share/man/man4/hwpmc.4 b/share/man/man4/hwpmc.4
	--- a/share/man/man4/hwpmc.4
	+++ b/share/man/man4/hwpmc.4
	@@ -598,6 +598,12 @@
	.Dv PMC_OP_GETPMCINFO
	operation.
	.It Bq Er EINVAL
	+The
	+.Ar pm_flags
	+argument to a
	+.Dv PMC_OP_CONFIGURELOG
	+request contained unknown flags.
	+.It Bq Er EINVAL
	A
	.Dv PMC_OP_CONFIGURELOG
	request to de-configure a log file was issued without a log file
	diff --git a/sys/dev/hwpmc/hwpmc_mod.c b/sys/dev/hwpmc/hwpmc_mod.c
	--- a/sys/dev/hwpmc/hwpmc_mod.c
	+++ b/sys/dev/hwpmc/hwpmc_mod.c
	@@ -3438,6 +3438,12 @@
	break;
	}

	+ /* No flags currently implemented */
	+ if (cl.pm_flags != 0) {
	+ error = EINVAL;
	+ break;
	+ }
	+
	/* mark this process as owning a log file */
	p = td->td_proc;
	if ((po = pmc_find_owner_descriptor(p)) == NULL)