From 80947e7c99c29ce3a78bdc1933b310468455a82f Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 18 May 2009 02:10:05 +0000 Subject: 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 Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/Kconfig.debug | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'arch/powerpc/Kconfig.debug') 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 -- cgit v1.2.3