Author: emaste
Date: Thu Nov 20 23:16:19 2014
New Revision: 274766
URL: https://svnweb.freebsd.org/changeset/base/274766
Log:
Clamp too-large hwpmc callchaindepth to the maximum
If the depth requested by the user is too large, it's better to provide
the maximum than the smaller default.
Sponsored by: The FreeBSD Foundation
Modified:
head/sys/dev/hwpmc/hwpmc_mod.c
Modified: head/sys/dev/hwpmc/hwpmc_mod.c
==============================================================================
--- head/sys/dev/hwpmc/hwpmc_mod.c Thu Nov 20 23:00:17 2014
(r274765)
+++ head/sys/dev/hwpmc/hwpmc_mod.c Thu Nov 20 23:16:19 2014
(r274766)
@@ -4749,8 +4749,9 @@ pmc_initialize(void)
if (pmc_callchaindepth <= 0 ||
pmc_callchaindepth > PMC_CALLCHAIN_DEPTH_MAX) {
(void) printf("hwpmc: tunable \"callchaindepth\"=%d out of "
- "range.\n", pmc_callchaindepth);
- pmc_callchaindepth = PMC_CALLCHAIN_DEPTH;
+ "range - using %d.\n", pmc_callchaindepth,
+ PMC_CALLCHAIN_DEPTH_MAX);
+ pmc_callchaindepth = PMC_CALLCHAIN_DEPTH_MAX;
}
md = pmc_md_initialize();
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