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authorGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>2009-05-18 02:10:05 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-05-21 15:44:26 +1000
commit80947e7c99c29ce3a78bdc1933b310468455a82f (patch)
treed0403ed66d03aa7f6498c65193e1f56def6af13f /arch/powerpc/Kconfig.debug
parentf312deb4cd0c88196edf6dab192b7d42514398d6 (diff)
downloadlinaro-lsk-80947e7c99c29ce3a78bdc1933b310468455a82f.tar.gz
powerpc: Keep track of emulated instructions
If CONFIG_PPC_EMULATED_STATS is enabled, make available counters for the various classes of emulated instructions under /sys/kernel/debug/powerpc/emulated_instructions/ (assumed debugfs is mounted on /sys/kernel/debug). Optionally (controlled by /sys/kernel/debug/powerpc/emulated_instructions/do_warn), rate-limited warnings can be printed to the console when instructions are emulated. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/Kconfig.debug')
-rw-r--r--arch/powerpc/Kconfig.debug13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index a1098e23221..d79a902d155 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -41,6 +41,19 @@ config HCALL_STATS
This option will add a small amount of overhead to all hypervisor
calls.
+config PPC_EMULATED_STATS
+ bool "Emulated instructions tracking"
+ depends on DEBUG_FS
+ help
+ Adds code to keep track of the number of instructions that are
+ emulated by the in-kernel emulator. Counters for the various classes
+ of emulated instructions are available under
+ powerpc/emulated_instructions/ in the root of the debugfs file
+ system. Optionally (controlled by
+ powerpc/emulated_instructions/do_warn in debugfs), rate-limited
+ warnings can be printed to the console when instructions are
+ emulated.
+
config CODE_PATCHING_SELFTEST
bool "Run self-tests of the code-patching code."
depends on DEBUG_KERNEL