Author: mmacy
Date: Mon Jun 4 21:17:30 2018
New Revision: 334637
URL: https://svnweb.freebsd.org/changeset/base/334637
Log:
hwpmc: don't defer user callchain capture completion to ast
Modified:
head/sys/dev/hwpmc/hwpmc_mod.c
Modified: head/sys/dev/hwpmc/hwpmc_mod.c
==============================================================================
--- head/sys/dev/hwpmc/hwpmc_mod.c Mon Jun 4 21:05:56 2018
(r334636)
+++ head/sys/dev/hwpmc/hwpmc_mod.c Mon Jun 4 21:17:30 2018
(r334637)
@@ -1715,11 +1715,9 @@ pmc_process_thread_delete(struct thread *td)
static void
pmc_process_thread_userret(struct thread *td)
{
-
- thread_lock(td);
- curthread->td_flags |= TDF_ASTPENDING;
- thread_unlock(td);
- pmc_post_callchain_callback();
+ sched_pin();
+ pmc_capture_user_callchain(curcpu, PMC_UR, td->td_frame);
+ sched_unpin();
}
/*
@@ -2253,8 +2251,6 @@ pmc_hook_handler(struct thread *td, int function, void
cpu = PCPU_GET(cpuid);
pmc_capture_user_callchain(cpu, PMC_SR,
- (struct trapframe *) arg);
- pmc_capture_user_callchain(cpu, PMC_UR,
(struct trapframe *) arg);
KASSERT(td->td_pinned == 1,
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