kernel/watchdog: fix Kconfig constraints for perf hardlockup watchdog
authorNicholas Piggin <npiggin@gmail.com>
Fri, 18 Aug 2017 22:15:51 +0000 (15:15 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 18 Aug 2017 22:32:01 +0000 (15:32 -0700)
commit92e5aae457787d0bc6b255200d2fb116edf69794
treee246feb15627b3bbde2a033947ccede1eb0b2004
parent739f79fc9db1b38f96b5a5109b247a650fbebf6d
kernel/watchdog: fix Kconfig constraints for perf hardlockup watchdog

Commit 05a4a9527931 ("kernel/watchdog: split up config options") lost
the perf-based hardlockup detector's dependency on PERF_EVENTS, which
can result in broken builds with some powerpc configurations.

Restore the dependency.  Add it in for x86 too, despite x86 always
selecting PERF_EVENTS it seems reasonable to make the dependency
explicit.

Link: http://lkml.kernel.org/r/20170810114452.6673-1-npiggin@gmail.com
Fixes: 05a4a9527931 ("kernel/watchdog: split up config options")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/powerpc/Kconfig
arch/x86/Kconfig