perf: Remove the nmi parameter from the swevent and overflow interface

The nmi parameter indicated if we could do wakeups from the current
context, if not, we would set some state and self-IPI and let the
resulting interrupt do the wakeup.

For the various event classes:

  - hardware: nmi=0; PMI is in fact an NMI or we run irq_work_run from
    the PMI-tail (ARM etc.)
  - tracepoint: nmi=0; since tracepoint could be from NMI context.
  - software: nmi=[0,1]; some, like the schedule thing cannot
    perform wakeups, and hence need 0.

As one can see, there is very little nmi=1 usage, and the down-side of
not using it is that on some platforms some software events can have a
jiffy delay in wakeup (when arch_irq_work_raise isn't implemented).

The up-side however is that we can remove the nmi parameter and save a
bunch of conditionals in fast paths.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Michael Cree <mcree@orcon.net.nz>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
Cc: Anton Blanchard <anton@samba.org>
Cc: Eric B Munson <emunson@mgebm.net>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Don Zickus <dzickus@redhat.com>
Link: http://lkml.kernel.org/n/tip-agjev8eu666tvknpb3iaj0fg@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>

39 files changed, 77 insertions, 85 deletions

diff --git a/arch/alpha/kernel/perf_event.c b/arch/alpha/kernel/perf_event.c
index 90561c45e7d8..8e47709160f8 100644
--- a/arch/alpha/kernel/perf_event.c
+++ b/arch/alpha/kernel/perf_event.c
@@ -847,7 +847,7 @@ static void alpha_perf_event_irq_handler(unsigned long la_ptr,
         data.period = event->hw.last_period;
 
         if (alpha_perf_event_set_period(event, hwc, idx)) {
-                if (perf_event_overflow(event, 1, &data, regs)) {
+                if (perf_event_overflow(event, &data, regs)) {
                         /* Interrupts coming too quickly; "throttle" the
                          * counter, i.e., disable it for a little while.
                          */
diff --git a/arch/arm/kernel/perf_event_v6.c b/arch/arm/kernel/perf_event_v6.c
index f1e8dd94afe8..38dc4da1d612 100644
--- a/arch/arm/kernel/perf_event_v6.c
+++ b/arch/arm/kernel/perf_event_v6.c
@@ -479,7 +479,7 @@ armv6pmu_handle_irq(int irq_num,
                 if (!armpmu_event_set_period(event, hwc, idx))
                         continue;
 
-                if (perf_event_overflow(event, 0, &data, regs))
+                if (perf_event_overflow(event, &data, regs))
                         armpmu->disable(hwc, idx);
         }
 
diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c
index 4960686afb58..6e5f8752303b 100644
--- a/arch/arm/kernel/perf_event_v7.c
+++ b/arch/arm/kernel/perf_event_v7.c
@@ -787,7 +787,7 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
                 if (!armpmu_event_set_period(event, hwc, idx))
                         continue;
 
-                if (perf_event_overflow(event, 0, &data, regs))
+                if (perf_event_overflow(event, &data, regs))
                         armpmu->disable(hwc, idx);
         }
 
diff --git a/arch/arm/kernel/perf_event_xscale.c b/arch/arm/kernel/perf_event_xscale.c
index 39affbe4fdb2..99b6b85c7e49 100644
--- a/arch/arm/kernel/perf_event_xscale.c
+++ b/arch/arm/kernel/perf_event_xscale.c
@@ -251,7 +251,7 @@ xscale1pmu_handle_irq(int irq_num, void *dev)
                 if (!armpmu_event_set_period(event, hwc, idx))
                         continue;
 
-                if (perf_event_overflow(event, 0, &data, regs))
+                if (perf_event_overflow(event, &data, regs))
                         armpmu->disable(hwc, idx);
         }
 
@@ -583,7 +583,7 @@ xscale2pmu_handle_irq(int irq_num, void *dev)
                 if (!armpmu_event_set_period(event, hwc, idx))
                         continue;
 
-                if (perf_event_overflow(event, 0, &data, regs))
+                if (perf_event_overflow(event, &data, regs))
                         armpmu->disable(hwc, idx);
         }
 
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 97260060bf26..0c9b1054f790 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -396,7 +396,7 @@ static long ptrace_hbp_idx_to_num(int idx)
 /*
  * Handle hitting a HW-breakpoint.
  */
-static void ptrace_hbptriggered(struct perf_event *bp, int unused,
+static void ptrace_hbptriggered(struct perf_event *bp,
                                      struct perf_sample_data *data,
                                      struct pt_regs *regs)
 {
diff --git a/arch/arm/kernel/swp_emulate.c b/arch/arm/kernel/swp_emulate.c
index 40ee7e5045e4..5f452f8fde05 100644
--- a/arch/arm/kernel/swp_emulate.c
+++ b/arch/arm/kernel/swp_emulate.c
@@ -183,7 +183,7 @@ static int swp_handler(struct pt_regs *regs, unsigned int instr)
         unsigned int address, destreg, data, type;
         unsigned int res = 0;
 
-        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, regs->ARM_pc);
+        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, regs->ARM_pc);
 
         if (current->pid != previous_pid) {
                 pr_debug("\"%s\" (%ld) uses deprecated SWP{B} instruction\n",
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index bc0e1d88fd3b..9ea4f7ddd665 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -318,11 +318,11 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
         fault = __do_page_fault(mm, addr, fsr, tsk);
         up_read(&mm->mmap_sem);
 
-        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, addr);
+        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, addr);
         if (fault & VM_FAULT_MAJOR)
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0, regs, addr);
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, addr);
         else if (fault & VM_FAULT_MINOR)
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0, regs, addr);
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, addr);
 
         /*
          * Handle the "normal" case first - VM_FAULT_MAJOR / VM_FAULT_MINOR
diff --git a/arch/mips/kernel/perf_event.c b/arch/mips/kernel/perf_event.c
index a8244854d3dc..d0deaab9ace2 100644
--- a/arch/mips/kernel/perf_event.c
+++ b/arch/mips/kernel/perf_event.c
@@ -527,7 +527,7 @@ handle_associated_event(struct cpu_hw_events *cpuc,
         if (!mipspmu_event_set_period(event, hwc, idx))
                 return;
 
-        if (perf_event_overflow(event, 0, data, regs))
+        if (perf_event_overflow(event, data, regs))
                 mipspmu->disable_event(idx);
 }
 
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index e9b3af27d844..b7517e3abc85 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -578,12 +578,12 @@ static int simulate_llsc(struct pt_regs *regs, unsigned int opcode)
 {
         if ((opcode & OPCODE) == LL) {
                 perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS,
-                                1, 0, regs, 0);
+                                1, regs, 0);
                 return simulate_ll(regs, opcode);
         }
         if ((opcode & OPCODE) == SC) {
                 perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS,
-                                1, 0, regs, 0);
+                                1, regs, 0);
                 return simulate_sc(regs, opcode);
         }
 
@@ -602,7 +602,7 @@ static int simulate_rdhwr(struct pt_regs *regs, unsigned int opcode)
                 int rd = (opcode & RD) >> 11;
                 int rt = (opcode & RT) >> 16;
                 perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS,
-                                1, 0, regs, 0);
+                                1, regs, 0);
                 switch (rd) {
                 case 0:         /* CPU number */
                         regs->regs[rt] = smp_processor_id();
@@ -640,7 +640,7 @@ static int simulate_sync(struct pt_regs *regs, unsigned int opcode)
 {
         if ((opcode & OPCODE) == SPEC0 && (opcode & FUNC) == SYNC) {
                 perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS,
-                                1, 0, regs, 0);
+                                1, regs, 0);
                 return 0;
         }
 
diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c
index cfea1adfa153..eb319b580353 100644
--- a/arch/mips/kernel/unaligned.c
+++ b/arch/mips/kernel/unaligned.c
@@ -111,8 +111,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
         unsigned long value;
         unsigned int res;
 
-        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS,
-                      1, 0, regs, 0);
+        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0);
 
         /*
          * This load never faults.
@@ -517,7 +516,7 @@ asmlinkage void do_ade(struct pt_regs *regs)
         mm_segment_t seg;
 
         perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS,
-                        1, 0, regs, regs->cp0_badvaddr);
+                        1, regs, regs->cp0_badvaddr);
         /*
          * Did we catch a fault trying to load an instruction?
          * Or are we running in MIPS16 mode?
diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
index d32cb0503110..dbf2f93a5091 100644
--- a/arch/mips/math-emu/cp1emu.c
+++ b/arch/mips/math-emu/cp1emu.c
@@ -272,8 +272,7 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
         }
 
       emul:
-        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS,
-                        1, 0, xcp, 0);
+        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, xcp, 0);
         MIPS_FPU_EMU_INC_STATS(emulated);
         switch (MIPSInst_OPCODE(ir)) {
         case ldc1_op:{
diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index 137ee76a0045..937cf3368164 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -145,7 +145,7 @@ good_area:
          * the fault.
          */
         fault = handle_mm_fault(mm, vma, address, write ? FAULT_FLAG_WRITE : 0);
-        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
+        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
         if (unlikely(fault & VM_FAULT_ERROR)) {
                 if (fault & VM_FAULT_OOM)
                         goto out_of_memory;
@@ -154,12 +154,10 @@ good_area:
                 BUG();
         }
         if (fault & VM_FAULT_MAJOR) {
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ,
-                                1, 0, regs, address);
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, address);
                 tsk->maj_flt++;
         } else {
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN,
-                                1, 0, regs, address);
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, address);
                 tsk->min_flt++;
         }
 
diff --git a/arch/powerpc/include/asm/emulated_ops.h b/arch/powerpc/include/asm/emulated_ops.h
index 45921672b97a..2cc41c715d2b 100644
--- a/arch/powerpc/include/asm/emulated_ops.h
+++ b/arch/powerpc/include/asm/emulated_ops.h
@@ -78,14 +78,14 @@ extern void ppc_warn_emulated_print(const char *type);
 #define PPC_WARN_EMULATED(type, regs)                                   \
         do {                                                            \
                 perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS,           \
-                        1, 0, regs, 0);                                 \
+                        1, regs, 0);                                    \
                 __PPC_WARN_EMULATED(type);                              \
         } while (0)
 
 #define PPC_WARN_ALIGNMENT(type, regs)                                  \
         do {                                                            \
                 perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS,           \
-                        1, 0, regs, regs->dar);                         \
+                        1, regs, regs->dar);                            \
                 __PPC_WARN_EMULATED(type);                              \
         } while (0)
 
diff --git a/arch/powerpc/kernel/perf_event.c b/arch/powerpc/kernel/perf_event.c
index 822f63008ae1..14967de98876 100644
--- a/arch/powerpc/kernel/perf_event.c
+++ b/arch/powerpc/kernel/perf_event.c
@@ -1207,7 +1207,7 @@ struct pmu power_pmu = {
  * here so there is no possibility of being interrupted.
  */
 static void record_and_restart(struct perf_event *event, unsigned long val,
-                               struct pt_regs *regs, int nmi)
+                               struct pt_regs *regs)
 {
         u64 period = event->hw.sample_period;
         s64 prev, delta, left;
@@ -1258,7 +1258,7 @@ static void record_and_restart(struct perf_event *event, unsigned long val,
                 if (event->attr.sample_type & PERF_SAMPLE_ADDR)
                         perf_get_data_addr(regs, &data.addr);
 
-                if (perf_event_overflow(event, nmi, &data, regs))
+                if (perf_event_overflow(event, &data, regs))
                         power_pmu_stop(event, 0);
         }
 }
@@ -1346,7 +1346,7 @@ static void perf_event_interrupt(struct pt_regs *regs)
                 if ((int)val < 0) {
                         /* event has overflowed */
                         found = 1;
-                        record_and_restart(event, val, regs, nmi);
+                        record_and_restart(event, val, regs);
                 }
         }
 
diff --git a/arch/powerpc/kernel/perf_event_fsl_emb.c b/arch/powerpc/kernel/perf_event_fsl_emb.c
index b0dc8f7069cd..0a6d2a9d569c 100644
--- a/arch/powerpc/kernel/perf_event_fsl_emb.c
+++ b/arch/powerpc/kernel/perf_event_fsl_emb.c
@@ -568,7 +568,7 @@ static struct pmu fsl_emb_pmu = {
  * here so there is no possibility of being interrupted.
  */
 static void record_and_restart(struct perf_event *event, unsigned long val,
-                               struct pt_regs *regs, int nmi)
+                               struct pt_regs *regs)
 {
         u64 period = event->hw.sample_period;
         s64 prev, delta, left;
@@ -616,7 +616,7 @@ static void record_and_restart(struct perf_event *event, unsigned long val,
                 perf_sample_data_init(&data, 0);
                 data.period = event->hw.last_period;
 
-                if (perf_event_overflow(event, nmi, &data, regs))
+                if (perf_event_overflow(event, &data, regs))
                         fsl_emb_pmu_stop(event, 0);
         }
 }
@@ -644,7 +644,7 @@ static void perf_event_interrupt(struct pt_regs *regs)
                         if (event) {
                                 /* event has overflowed */
                                 found = 1;
-                                record_and_restart(event, val, regs, nmi);
+                                record_and_restart(event, val, regs);
                         } else {
                                 /*
                                  * Disabled counter is negative,
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index cb22024f2b42..3177617af2ef 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -882,7 +882,7 @@ void user_disable_single_step(struct task_struct *task)
 }
 
 #ifdef CONFIG_HAVE_HW_BREAKPOINT
-void ptrace_triggered(struct perf_event *bp, int nmi,
+void ptrace_triggered(struct perf_event *bp,
                       struct perf_sample_data *data, struct pt_regs *regs)
 {
         struct perf_event_attr attr;
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 54f4fb994e99..dbc48254c6cc 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -173,7 +173,7 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,
                 die("Weird page fault", regs, SIGSEGV);
         }
 
-        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
+        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
 
         /* When running in the kernel we expect faults to occur only to
          * addresses in user space.  All other faults represent errors in the
@@ -319,7 +319,7 @@ good_area:
         }
         if (ret & VM_FAULT_MAJOR) {
                 current->maj_flt++;
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1,
                                      regs, address);
 #ifdef CONFIG_PPC_SMLPAR
                 if (firmware_has_feature(FW_FEATURE_CMO)) {
@@ -330,7 +330,7 @@ good_area:
 #endif
         } else {
                 current->min_flt++;
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1,
                                      regs, address);
         }
         up_read(&mm->mmap_sem);
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index fe103e891e7a..095f782a5512 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -299,7 +299,7 @@ static inline int do_exception(struct pt_regs *regs, int access,
                 goto out;
 
         address = trans_exc_code & __FAIL_ADDR_MASK;
-        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
+        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
         flags = FAULT_FLAG_ALLOW_RETRY;
         if (access == VM_WRITE || (trans_exc_code & store_indication) == 0x400)
                 flags |= FAULT_FLAG_WRITE;
@@ -345,11 +345,11 @@ retry:
         if (flags & FAULT_FLAG_ALLOW_RETRY) {
                 if (fault & VM_FAULT_MAJOR) {
                         tsk->maj_flt++;
-                        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
+                        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1,
                                       regs, address);
                 } else {
                         tsk->min_flt++;
-                        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
+                        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1,
                                       regs, address);
                 }
                 if (fault & VM_FAULT_RETRY) {
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index 3d7b209b2178..8051976100a6 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -63,7 +63,7 @@ static inline int put_stack_long(struct task_struct *task, int offset,
         return 0;
 }
 
-void ptrace_triggered(struct perf_event *bp, int nmi,
+void ptrace_triggered(struct perf_event *bp,
                       struct perf_sample_data *data, struct pt_regs *regs)
 {
         struct perf_event_attr attr;
diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c
index b51a17104b5f..d9006f8ffc14 100644
--- a/arch/sh/kernel/traps_32.c
+++ b/arch/sh/kernel/traps_32.c
@@ -393,7 +393,7 @@ int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs,
          */
         if (!expected) {
                 unaligned_fixups_notify(current, instruction, regs);
-                perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0,
+                perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1,
                               regs, address);
         }
 
diff --git a/arch/sh/kernel/traps_64.c b/arch/sh/kernel/traps_64.c
index 6713ca97e553..67110be83fd7 100644
--- a/arch/sh/kernel/traps_64.c
+++ b/arch/sh/kernel/traps_64.c
@@ -434,7 +434,7 @@ static int misaligned_load(struct pt_regs *regs,
                 return error;
         }
 
-        perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, address);
+        perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, address);
 
         destreg = (opcode >> 4) & 0x3f;
         if (user_mode(regs)) {
@@ -512,7 +512,7 @@ static int misaligned_store(struct pt_regs *regs,
                 return error;
         }
 
-        perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, address);
+        perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, address);
 
         srcreg = (opcode >> 4) & 0x3f;
         if (user_mode(regs)) {
@@ -588,7 +588,7 @@ static int misaligned_fpu_load(struct pt_regs *regs,
                 return error;
         }
 
-        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, address);
+        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, address);
 
         destreg = (opcode >> 4) & 0x3f;
         if (user_mode(regs)) {
@@ -665,7 +665,7 @@ static int misaligned_fpu_store(struct pt_regs *regs,
                 return error;
         }
 
-        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, address);
+        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, address);
 
         srcreg = (opcode >> 4) & 0x3f;
         if (user_mode(regs)) {
diff --git a/arch/sh/math-emu/math.c b/arch/sh/math-emu/math.c
index f76a5090d5d1..977195210653 100644
--- a/arch/sh/math-emu/math.c
+++ b/arch/sh/math-emu/math.c
@@ -620,7 +620,7 @@ int do_fpu_inst(unsigned short inst, struct pt_regs *regs)
         struct task_struct *tsk = current;
         struct sh_fpu_soft_struct *fpu = &(tsk->thread.xstate->softfpu);
 
-        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
+        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0);
 
         if (!(task_thread_info(tsk)->status & TS_USEDFPU)) {
                 /* initialize once. */
diff --git a/arch/sh/mm/fault_32.c b/arch/sh/mm/fault_32.c
index d4c34d757f0d..7bebd044f2a1 100644
--- a/arch/sh/mm/fault_32.c
+++ b/arch/sh/mm/fault_32.c
@@ -160,7 +160,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
         if ((regs->sr & SR_IMASK) != SR_IMASK)
                 local_irq_enable();
 
-        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
+        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
 
         /*
          * If we're in an interrupt, have no user context or are running
@@ -210,11 +210,11 @@ good_area:
         }
         if (fault & VM_FAULT_MAJOR) {
                 tsk->maj_flt++;
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1,
                                      regs, address);
         } else {
                 tsk->min_flt++;
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1,
                                      regs, address);
         }
 
diff --git a/arch/sh/mm/tlbflush_64.c b/arch/sh/mm/tlbflush_64.c
index 7f5810f5dfdc..e3430e093d43 100644
--- a/arch/sh/mm/tlbflush_64.c
+++ b/arch/sh/mm/tlbflush_64.c
@@ -116,7 +116,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
         /* Not an IO address, so reenable interrupts */
         local_irq_enable();
 
-        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
+        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
 
         /*
          * If we're in an interrupt or have no user
@@ -200,11 +200,11 @@ good_area:
 
         if (fault & VM_FAULT_MAJOR) {
                 tsk->maj_flt++;
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1,
                                      regs, address);
         } else {
                 tsk->min_flt++;
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1,
                                      regs, address);
         }
 
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index 2cb0e1c001e2..0b32f2e9e08d 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -1277,7 +1277,7 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self,
                 if (!sparc_perf_event_set_period(event, hwc, idx))
                         continue;
 
-                if (perf_event_overflow(event, 1, &data, regs))
+                if (perf_event_overflow(event, &data, regs))
                         sparc_pmu_stop(event, 0);
         }
 
diff --git a/arch/sparc/kernel/unaligned_32.c b/arch/sparc/kernel/unaligned_32.c
index 4491f4cb2695..7efbb2f9e77f 100644
--- a/arch/sparc/kernel/unaligned_32.c
+++ b/arch/sparc/kernel/unaligned_32.c
@@ -247,7 +247,7 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
                 unsigned long addr = compute_effective_address(regs, insn);
                 int err;
 
-                perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, addr);
+                perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, addr);
                 switch (dir) {
                 case load:
                         err = do_int_load(fetch_reg_addr(((insn>>25)&0x1f),
@@ -338,7 +338,7 @@ asmlinkage void user_unaligned_trap(struct pt_regs *regs, unsigned int insn)
                 }
 
                 addr = compute_effective_address(regs, insn);
-                perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, addr);
+                perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, addr);
                 switch(dir) {
                 case load:
                         err = do_int_load(fetch_reg_addr(((insn>>25)&0x1f),
diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c
index b2b019ea8caa..35cff1673aa4 100644
--- a/arch/sparc/kernel/unaligned_64.c
+++ b/arch/sparc/kernel/unaligned_64.c
@@ -317,7 +317,7 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
 
                 addr = compute_effective_address(regs, insn,
                                                  ((insn >> 25) & 0x1f));
-                perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, addr);
+                perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, addr);
                 switch (asi) {
                 case ASI_NL:
                 case ASI_AIUPL:
@@ -384,7 +384,7 @@ int handle_popc(u32 insn, struct pt_regs *regs)
         int ret, i, rd = ((insn >> 25) & 0x1f);
         int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
                                 
-        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
+        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0);
         if (insn & 0x2000) {
                 maybe_flush_windows(0, 0, rd, from_kernel);
                 value = sign_extend_imm13(insn);
@@ -431,7 +431,7 @@ int handle_ldf_stq(u32 insn, struct pt_regs *regs)
         int asi = decode_asi(insn, regs);
         int flag = (freg < 32) ? FPRS_DL : FPRS_DU;
 
-        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
+        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0);
 
         save_and_clear_fpu();
         current_thread_info()->xfsr[0] &= ~0x1c000;
@@ -554,7 +554,7 @@ void handle_ld_nf(u32 insn, struct pt_regs *regs)
         int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
         unsigned long *reg;
                                 
-        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
+        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0);
 
         maybe_flush_windows(0, 0, rd, from_kernel);
         reg = fetch_reg_addr(rd, regs);
@@ -586,7 +586,7 @@ void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
 
         if (tstate & TSTATE_PRIV)
                 die_if_kernel("lddfmna from kernel", regs);
-        perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, sfar);
+        perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, sfar);
         if (test_thread_flag(TIF_32BIT))
                 pc = (u32)pc;
         if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
@@ -647,7 +647,7 @@ void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
 
         if (tstate & TSTATE_PRIV)
                 die_if_kernel("stdfmna from kernel", regs);
-        perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, sfar);
+        perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, sfar);
         if (test_thread_flag(TIF_32BIT))
                 pc = (u32)pc;
         if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
diff --git a/arch/sparc/kernel/visemul.c b/arch/sparc/kernel/visemul.c
index 36357717d691..32b626c9d815 100644
--- a/arch/sparc/kernel/visemul.c
+++ b/arch/sparc/kernel/visemul.c
@@ -802,7 +802,7 @@ int vis_emul(struct pt_regs *regs, unsigned int insn)
 
         BUG_ON(regs->tstate & TSTATE_PRIV);
 
-        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
+        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0);
 
         if (test_thread_flag(TIF_32BIT))
                 pc = (u32)pc;
diff --git a/arch/sparc/math-emu/math_32.c b/arch/sparc/math-emu/math_32.c
index a3fccde894ec..aa4d55b0bdf0 100644
--- a/arch/sparc/math-emu/math_32.c
+++ b/arch/sparc/math-emu/math_32.c
@@ -164,7 +164,7 @@ int do_mathemu(struct pt_regs *regs, struct task_struct *fpt)
         int retcode = 0;                               /* assume all succeed */
         unsigned long insn;
 
-        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
+        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0);
 
 #ifdef DEBUG_MATHEMU
         printk("In do_mathemu()... pc is %08lx\n", regs->pc);
diff --git a/arch/sparc/math-emu/math_64.c b/arch/sparc/math-emu/math_64.c
index 56d2c44747b8..e575bd2fe381 100644
--- a/arch/sparc/math-emu/math_64.c
+++ b/arch/sparc/math-emu/math_64.c
@@ -184,7 +184,7 @@ int do_mathemu(struct pt_regs *regs, struct fpustate *f)
 
         if (tstate & TSTATE_PRIV)
                 die_if_kernel("unfinished/unimplemented FPop from kernel", regs);
-        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
+        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0);
         if (test_thread_flag(TIF_32BIT))
                 pc = (u32)pc;
         if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
index 7543ddbdadb2..aa1c1b1ce5cc 100644
--- a/arch/sparc/mm/fault_32.c
+++ b/arch/sparc/mm/fault_32.c
@@ -251,7 +251,7 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
         if (in_atomic() || !mm)
                 goto no_context;
 
-        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
+        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
 
         down_read(&mm->mmap_sem);
 
@@ -301,12 +301,10 @@ good_area:
         }
         if (fault & VM_FAULT_MAJOR) {
                 current->maj_flt++;
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
-                              regs, address);
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, address);
         } else {
                 current->min_flt++;
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
-                              regs, address);
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, address);
         }
         up_read(&mm->mmap_sem);
         return;
diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c
index f92ce56a8b22..504c0622f729 100644
--- a/arch/sparc/mm/fault_64.c
+++ b/arch/sparc/mm/fault_64.c
@@ -325,7 +325,7 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
         if (in_atomic() || !mm)
                 goto intr_or_no_mm;
 
-        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
+        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
 
         if (!down_read_trylock(&mm->mmap_sem)) {
                 if ((regs->tstate & TSTATE_PRIV) &&
@@ -433,12 +433,10 @@ good_area:
         }
         if (fault & VM_FAULT_MAJOR) {
                 current->maj_flt++;
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
-                              regs, address);
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, address);
         } else {
                 current->min_flt++;
-                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
-                              regs, address);
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, address);
         }
         up_read(&mm->mmap_sem);
 
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 8a57f9aa8e36..5b86ec51534c 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1339,7 +1339,7 @@ static int x86_pmu_handle_irq(struct pt_regs *regs)
                 if (!x86_perf_event_set_period(event))
                         continue;
 
-                if (perf_event_overflow(event, 1, &data, regs))
+                if (perf_event_overflow(event, &data, regs))
                         x86_pmu_stop(event, 0);
         }
 
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index 41178c826c48..d38b0020f775 100644
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -1003,7 +1003,7 @@ again:
 
                 data.period = event->hw.last_period;
 
-                if (perf_event_overflow(event, 1, &data, regs))
+                if (perf_event_overflow(event, &data, regs))
                         x86_pmu_stop(event, 0);
         }
 
diff --git a/arch/x86/kernel/cpu/perf_event_intel_ds.c b/arch/x86/kernel/cpu/perf_event_intel_ds.c
index bab491b8ee25..0941f93f2940 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_ds.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_ds.c
@@ -340,7 +340,7 @@ static int intel_pmu_drain_bts_buffer(void)
          */
         perf_prepare_sample(&header, &data, event, &regs);
 
-        if (perf_output_begin(&handle, event, header.size * (top - at), 1, 1))
+        if (perf_output_begin(&handle, event, header.size * (top - at), 1))
                 return 1;
 
         for (; at < top; at++) {
@@ -616,7 +616,7 @@ static void __intel_pmu_pebs_event(struct perf_event *event,
         else
                 regs.flags &= ~PERF_EFLAGS_EXACT;
 
-        if (perf_event_overflow(event, 1, &data, &regs))
+        if (perf_event_overflow(event, &data, &regs))
                 x86_pmu_stop(event, 0);
 }
 
diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c
index f76fddf63381..d6e6a67b9608 100644
--- a/arch/x86/kernel/cpu/perf_event_p4.c
+++ b/arch/x86/kernel/cpu/perf_event_p4.c
@@ -970,7 +970,7 @@ static int p4_pmu_handle_irq(struct pt_regs *regs)
 
                 if (!x86_perf_event_set_period(event))
                         continue;
-                if (perf_event_overflow(event, 1, &data, regs))
+                if (perf_event_overflow(event, &data, regs))
                         x86_pmu_stop(event, 0);
         }
 
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index 5f9ecff328b5..98da6a7b5e82 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -608,7 +608,7 @@ int kgdb_arch_init(void)
         return register_die_notifier(&kgdb_notifier);
 }
 
-static void kgdb_hw_overflow_handler(struct perf_event *event, int nmi,
+static void kgdb_hw_overflow_handler(struct perf_event *event,
                 struct perf_sample_data *data, struct pt_regs *regs)
 {
         struct task_struct *tsk = current;
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 807c2a2b80f1..11db2e9b860a 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -528,7 +528,7 @@ static int genregs_set(struct task_struct *target,
         return ret;
 }
 
-static void ptrace_triggered(struct perf_event *bp, int nmi,
+static void ptrace_triggered(struct perf_event *bp,
                              struct perf_sample_data *data,
                              struct pt_regs *regs)
 {
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 2dbf6bf4c7e5..4d09df054e39 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -1059,7 +1059,7 @@ do_page_fault(struct pt_regs *regs, unsigned long error_code)
         if (unlikely(error_code & PF_RSVD))
                 pgtable_bad(regs, error_code, address);
 
-        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
+        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
 
         /*
          * If we're in an interrupt, have no user context or are running
@@ -1161,11 +1161,11 @@ good_area:
         if (flags & FAULT_FLAG_ALLOW_RETRY) {
                 if (fault & VM_FAULT_MAJOR) {
                         tsk->maj_flt++;
-                        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
+                        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1,
                                       regs, address);
                 } else {
                         tsk->min_flt++;
-                        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
+                        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1,
                                       regs, address);
                 }
                 if (fault & VM_FAULT_RETRY) {