git: f0ed49921c28 - stable/13 - dtrace: make 'ring' and 'fill' policies imply 'noswitch' flag

[Andriy Gapon]

The branch stable/13 has been updated by avg:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=f0ed49921c2891733b7ee65679a8dcba5398e3b6

commit f0ed49921c2891733b7ee65679a8dcba5398e3b6
Author:     Andriy Gapon <a...@freebsd.org>
AuthorDate: 2021-12-24 09:38:38 +0000
Commit:     Andriy Gapon <a...@freebsd.org>
CommitDate: 2024-02-17 19:22:08 +0000

    dtrace: make 'ring' and 'fill' policies imply 'noswitch' flag
    
    This should disable allocation of the second per-CPU principal buffer
    which is never used.  This will also enable additional asserts
    for buffers that are never switched.
    
    (cherry picked from commit e92491d95ff3500e140eafa614e88ca84ffb0d26)
---
 sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c 
b/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c
index 6ae0322ebb0f..17d9536b2428 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c
@@ -12055,7 +12055,6 @@ dtrace_buffer_switch(dtrace_buffer_t *buf)
        hrtime_t now;
 
        ASSERT(!(buf->dtb_flags & DTRACEBUF_NOSWITCH));
-       ASSERT(!(buf->dtb_flags & DTRACEBUF_RING));
 
        cookie = dtrace_interrupt_disable();
        now = dtrace_gethrtime();
@@ -14863,10 +14862,10 @@ dtrace_state_buffer(dtrace_state_t *state, 
dtrace_buffer_t *buf, int which)
 
        if (which == DTRACEOPT_BUFSIZE) {
                if (opt[DTRACEOPT_BUFPOLICY] == DTRACEOPT_BUFPOLICY_RING)
-                       flags |= DTRACEBUF_RING;
+                       flags |= DTRACEBUF_RING | DTRACEBUF_NOSWITCH;
 
                if (opt[DTRACEOPT_BUFPOLICY] == DTRACEOPT_BUFPOLICY_FILL)
-                       flags |= DTRACEBUF_FILL;
+                       flags |= DTRACEBUF_FILL | DTRACEBUF_NOSWITCH;
 
                if (state != dtrace_anon.dta_state ||
                    state->dts_activity != DTRACE_ACTIVITY_ACTIVE)