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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2010-05-15 22:57:48 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2010-05-16 01:57:36 +0200 |
| commit | c01d4323309a90a298fd81cf3a059ee1b12be2e9 (patch) | |
| tree | d34c6508c56d14cf1461528c1840182a348f26f4 | |
| parent | lockup_detector: Update some config (diff) | |
| download | linux-c01d4323309a90a298fd81cf3a059ee1b12be2e9.tar.xz linux-c01d4323309a90a298fd81cf3a059ee1b12be2e9.zip | |
lockup_detector: Adapt CONFIG_PERF_EVENT_NMI to other archs
CONFIG_PERF_EVENT_NMI is something that need to be enabled from the
arch. This is fine on x86 as PERF_EVENTS is builtin but if other
archs select it, they will need to handle the PERF_EVENTS dependency.
Instead, handle the dependency in the generic layer:
- archs need to tell what they support through HAVE_PERF_EVENTS_NMI
- Enable magically PERF_EVENTS_NMI if we have PERF_EVENTS and
HAVE_PERF_EVENTS_NMI.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
| -rw-r--r-- | arch/Kconfig | 3 | ||||
| -rw-r--r-- | arch/x86/Kconfig | 2 | ||||
| -rw-r--r-- | init/Kconfig | 3 |
3 files changed, 5 insertions, 3 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index e5eb1337a537..89b0efb50948 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -145,4 +145,7 @@ config HAVE_HW_BREAKPOINT config HAVE_USER_RETURN_NOTIFIER bool +config HAVE_PERF_EVENTS_NMI + bool + source "kernel/gcov/Kconfig" diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 3cb28cd1f551..3cb5bb02172b 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -54,7 +54,7 @@ config X86 select HAVE_KERNEL_LZO select HAVE_HW_BREAKPOINT select PERF_EVENTS - select PERF_EVENTS_NMI + select HAVE_PERF_EVENTS_NMI select ANON_INODES select HAVE_ARCH_KMEMCHECK select HAVE_USER_RETURN_NOTIFIER diff --git a/init/Kconfig b/init/Kconfig index e44e25422f22..ab733c32292c 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -943,8 +943,7 @@ config PERF_USE_VMALLOC See tools/perf/design.txt for details config PERF_EVENTS_NMI - bool - depends on PERF_EVENTS + def_bool PERF_EVENTS && HAVE_PERF_EVENTS_NMI help System hardware can generate an NMI using the perf event subsystem. Also has support for calculating CPU cycle events |