linux-kernel - [tip:timers/urgent] time: Make VIRT_CPU_ACCOUNTING_GEN depend on GENERIC

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Date:   Wed, 6 Mar 2019 11:45:58 -0800
From:   tip-bot for Arnd Bergmann <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, fweisbec@...il.com, hpa@...or.com, arnd@...db.de,
        paulmck@...ux.ibm.com, tglx@...utronix.de,
        linux-kernel@...r.kernel.org
Subject: [tip:timers/urgent] time: Make VIRT_CPU_ACCOUNTING_GEN depend on
 GENERIC_CLOCKEVENTS

Commit-ID:  041a15744a7fb4e9b2759611e44fb8847960564e
Gitweb:     https://git.kernel.org/tip/041a15744a7fb4e9b2759611e44fb8847960564e
Author:     Arnd Bergmann <arnd@...db.de>
AuthorDate: Mon, 4 Mar 2019 21:01:31 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Wed, 6 Mar 2019 20:43:08 +0100

time: Make VIRT_CPU_ACCOUNTING_GEN depend on GENERIC_CLOCKEVENTS

Moving the CONTEXT_TRACKING Kconfig option into kernel/time/Kconfig added
an implicit dependency on the surrounding GENERIC_CLOCKEVENTS option, but
this is not always enabled when it is possible to select
VIRT_CPU_ACCOUNTING_GEN:

WARNING: unmet direct dependencies detected for CONTEXT_TRACKING
  Depends on [n]: GENERIC_CLOCKEVENTS [=n]
  Selected by [y]:
  - VIRT_CPU_ACCOUNTING_GEN [=y] && <choice> && HAVE_CONTEXT_TRACKING [=y] && HAVE_VIRT_CPU_ACCOUNTING_GEN [=y]

Platforms without GENERIC_CLOCKEVENTS are rare enough so that corner case
can be just ignored. Make it a dependency for VIRT_CPU_ACCOUNTING_GEN to
simplify the configuration.

Fixes: a4cffdad7314 ("time: Move CONTEXT_TRACKING to kernel/time/Kconfig")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: "Paul E . McKenney" <paulmck@...ux.ibm.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Link: https://lkml.kernel.org/r/20190304200202.1163250-1-arnd@arndb.de

---
 init/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/init/Kconfig b/init/Kconfig
index c9386a365eea..acbde4ef2395 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -382,6 +382,7 @@ config VIRT_CPU_ACCOUNTING_GEN
 	bool "Full dynticks CPU time accounting"
 	depends on HAVE_CONTEXT_TRACKING
 	depends on HAVE_VIRT_CPU_ACCOUNTING_GEN
+	depends on GENERIC_CLOCKEVENTS
 	select VIRT_CPU_ACCOUNTING
 	select CONTEXT_TRACKING
 	help