This patch set is a first try of implementing some additional perf events on PPC 8xx.
The first patch of the serie fixes missing MSR RI setting at end of exceptions The second patch implements the perf counters. The 8xx has no PMU, however some events can be emulated by other means. This patch implements the following 4 events: cpu-cycles OR cycles [Hardware event] instructions [Hardware event] dTLB-load-misses [Hardware cache event] iTLB-load-misses [Hardware cache event] I have no real clue on how should work perf events, hence the RFC status of this serie. I have tested it with 'perf stat' and it seems to provide relevant information. This serie applies of top of the two following patches: * powerpc/32: Remove FIX_SRR1 * powerpc/8xx: Implement hw_breakpoint Christophe Leroy (2): powerpc/32: Unset MSR RI in exception epilogs powerpc/8xx: Perf events on PPC 8xx arch/powerpc/include/asm/ppc_asm.h | 6 ++ arch/powerpc/include/asm/reg.h | 2 + arch/powerpc/include/asm/reg_8xx.h | 4 + arch/powerpc/kernel/entry_32.S | 5 + arch/powerpc/kernel/head_8xx.S | 45 +++++++- arch/powerpc/perf/8xx-pmu.c | 181 +++++++++++++++++++++++++++++++++ arch/powerpc/perf/Makefile | 2 + arch/powerpc/platforms/Kconfig.cputype | 7 ++ 8 files changed, 249 insertions(+), 3 deletions(-) create mode 100644 arch/powerpc/perf/8xx-pmu.c -- 2.10.1
