diff options
Diffstat (limited to 'arch/mips/kernel/traps.c')
| -rw-r--r-- | arch/mips/kernel/traps.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index d053bf4759e..8d79b8774b3 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -29,6 +29,7 @@ #include <linux/notifier.h> #include <linux/kdb.h> #include <linux/irq.h> +#include <linux/perf_event.h> #include <asm/bootinfo.h> #include <asm/branch.h> @@ -576,10 +577,16 @@ static inline int simulate_sc(struct pt_regs *regs, unsigned int opcode) */ static int simulate_llsc(struct pt_regs *regs, unsigned int opcode) { - if ((opcode & OPCODE) == LL) + if ((opcode & OPCODE) == LL) { + perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, + 1, 0, regs, 0); return simulate_ll(regs, opcode); - if ((opcode & OPCODE) == SC) + } + if ((opcode & OPCODE) == SC) { + perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, + 1, 0, regs, 0); return simulate_sc(regs, opcode); + } return -1; /* Must be something else ... */ } @@ -595,6 +602,8 @@ static int simulate_rdhwr(struct pt_regs *regs, unsigned int opcode) if ((opcode & OPCODE) == SPEC3 && (opcode & FUNC) == RDHWR) { int rd = (opcode & RD) >> 11; int rt = (opcode & RT) >> 16; + perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, + 1, 0, regs, 0); switch (rd) { case 0: /* CPU number */ regs->regs[rt] = smp_processor_id(); @@ -630,8 +639,11 @@ static int simulate_rdhwr(struct pt_regs *regs, unsigned int opcode) static int simulate_sync(struct pt_regs *regs, unsigned int opcode) { - if ((opcode & OPCODE) == SPEC0 && (opcode & FUNC) == SYNC) + if ((opcode & OPCODE) == SPEC0 && (opcode & FUNC) == SYNC) { + perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, + 1, 0, regs, 0); return 0; + } return -1; /* Must be something else ... */ } |