linux-kernel - [PATCH] cxl: remove CONFIG_CXL_PMU entry in drivers/cxl/Kconfig

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240204094613.40687-1-masahiroy@kernel.org>
Date: Sun,  4 Feb 2024 18:46:13 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: Davidlohr Bueso <dave@...olabs.net>,
	Jonathan Cameron <jonathan.cameron@...wei.com>,
	Dave Jiang <dave.jiang@...el.com>,
	Alison Schofield <alison.schofield@...el.com>,
	Vishal Verma <vishal.l.verma@...el.com>,
	Ira Weiny <ira.weiny@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	linux-cxl@...r.kernel.org
Cc: Masahiro Yamada <masahiroy@...nel.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] cxl: remove CONFIG_CXL_PMU entry in drivers/cxl/Kconfig

Commit 5d7107c72796 ("perf: CXL Performance Monitoring Unit driver")
added the config entries for CXL_PMU in drivers/cxl/Kconfig and
drivers/perf/Kconfig, so it can be toggled from multiple locations:

[1] Device Drivers
     -> PCI support
       -> CXL (Compute Expres Link) Devices
         -> CXL Performance Monitoring Unit

[2] Device Drivers
     -> Performance monitor support
       -> CXL Performance Monitoring Unit

This complicates things, and nobody else does this.

I kept the one in drivers/perf/Kconfig because CONFIG_CXL_PMU controls
the compilation of drivers/perf/cxl_pmu.c.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 drivers/cxl/Kconfig | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/drivers/cxl/Kconfig b/drivers/cxl/Kconfig
index 67998dbd1d46..5f3c9c5529b9 100644
--- a/drivers/cxl/Kconfig
+++ b/drivers/cxl/Kconfig
@@ -144,17 +144,4 @@ config CXL_REGION_INVALIDATION_TEST
 	  If unsure, or if this kernel is meant for production environments,
 	  say N.
 
-config CXL_PMU
-	tristate "CXL Performance Monitoring Unit"
-	default CXL_BUS
-	depends on PERF_EVENTS
-	help
-	  Support performance monitoring as defined in CXL rev 3.0
-	  section 13.2: Performance Monitoring. CXL components may have
-	  one or more CXL Performance Monitoring Units (CPMUs).
-
-	  Say 'y/m' to enable a driver that will attach to performance
-	  monitoring units and provide standard perf based interfaces.
-
-	  If unsure say 'm'.
 endif
-- 
2.40.1