git: 3977781b987e - main - pmc: clarify and strengthen statements about API/ABI
- Go to: [ bottom of page ] [ top of archives ] [ this month ]
Date: Fri, 16 Jun 2023 16:45:07 UTC
The branch main has been updated by mhorne:
URL: https://cgit.FreeBSD.org/src/commit/?id=3977781b987e369a9fe23bb642b9680b0a3887c1
commit 3977781b987e369a9fe23bb642b9680b0a3887c1
Author: Mitchell Horne <mhorne@FreeBSD.org>
AuthorDate: 2023-06-16 16:38:19 +0000
Commit: Mitchell Horne <mhorne@FreeBSD.org>
CommitDate: 2023-06-16 16:44:54 +0000
pmc: clarify and strengthen statements about API/ABI
- Make it clear that applications are not only encouraged to use the
pmc(3) library, but use of the hwpmc(4) interface directly is a
use-case we do not support
- Move the COMPATIBILITY section above PROGRAMMING API in hwpmc(4)
- Drop statements about the driver and library being "under development"
Reviewed by: jkoshy, emaste
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D40543
---
lib/libpmc/pmc.3 | 8 ++------
share/man/man4/hwpmc.4 | 27 +++++++++------------------
2 files changed, 11 insertions(+), 24 deletions(-)
diff --git a/lib/libpmc/pmc.3 b/lib/libpmc/pmc.3
index 83f555a5a770..83906a8d9e44 100644
--- a/lib/libpmc/pmc.3
+++ b/lib/libpmc/pmc.3
@@ -23,7 +23,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd April 5, 2023
+.Dd June 16, 2023
.Dt PMC 3
.Os
.Sh NAME
@@ -542,11 +542,7 @@ In order to ease forward compatibility with future versions of the
driver, applications are urged to dynamically link with the
.Nm pmc
library.
-.Pp
-The
-.Nm pmc
-API is
-.Ud
+Doing otherwise is unsupported.
.Sh SEE ALSO
.Xr pmc.atom 3 ,
.Xr pmc.core 3 ,
diff --git a/share/man/man4/hwpmc.4 b/share/man/man4/hwpmc.4
index 6c9e90b36c2d..c394af90cd8d 100644
--- a/share/man/man4/hwpmc.4
+++ b/share/man/man4/hwpmc.4
@@ -28,7 +28,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd May 31, 2023
+.Dd June 16, 2023
.Dt HWPMC 4
.Os
.Sh NAME
@@ -281,14 +281,15 @@ Non-disabled hardware counters in such a row may be used
for satisfying system scope allocation requests.
No process scope PMCs will use hardware counters in this row.
.El
-.Sh PROGRAMMING API
-The recommended way for application programs to use the facilities of
-the
-.Nm
-driver is using the API provided by the
+.Sh COMPATIBILITY
+The API and ABI documented in this manual page may change in the future.
+This interface is intended to be consumed by the
.Xr pmc 3
-library.
-.Pp
+library; other consumers are unsupported.
+Applications targeting PMCs should use the
+.Xr pmc 3
+library API.
+.Sh PROGRAMMING API
The
.Nm
driver operates using a system call number that is dynamically
@@ -519,16 +520,6 @@ The value for tunable
.Va kern.hwpmc.nsamples
was negative or greater than 65535.
.El
-.Sh COMPATIBILITY
-The
-.Nm
-driver is
-.Ud
-The API and ABI documented in this manual page may change in
-the future.
-The recommended method of accessing this driver is using the
-.Xr pmc 3
-API.
.Sh ERRORS
A command issued to the
.Nm