|author||Frederic Weisbecker <firstname.lastname@example.org>||2020-12-02 12:57:29 +0100|
|committer||Thomas Gleixner <email@example.com>||2020-12-02 20:20:04 +0100|
s390/vtime: Use the generic IRQ entry accounting
s390 has its own version of IRQ entry accounting because it doesn't account the idle time the same way the other architectures do. Only the actual idle sleep time is accounted as idle time, the rest of the idle task execution is accounted as system time. Make the generic IRQ entry accounting aware of architectures that have their own way of accounting idle time and convert s390 to use it. This prepares s390 to get involved in further consolidations of IRQ time accounting. Signed-off-by: Frederic Weisbecker <firstname.lastname@example.org> Signed-off-by: Thomas Gleixner <email@example.com> Link: https://firstname.lastname@example.org
Diffstat (limited to 'arch/Kconfig')
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index 56b6ccc0e32d..0f151b49c7b7 100644
@@ -627,6 +627,12 @@ config HAVE_TIF_NOHZ
+ Architecture has its own way to account idle CPU time and therefore
+ doesn't implement vtime_account_idle().
@@ -641,7 +647,6 @@ config HAVE_VIRT_CPU_ACCOUNTING_GEN
some 32-bit arches may require multiple accesses, so proper
locking is needed to protect against concurrent accesses.