* [PATCH 7/10]: sparc: Add alignment and emulation fault perf events.
@ 2009-12-12 6:55 David Miller
0 siblings, 0 replies; only message in thread
From: David Miller @ 2009-12-12 6:55 UTC (permalink / raw
To: sparclinux
This mirrors commit 196f02bf900c5eb6f85d889c4f70e7cc11fda7e8
(powerpc: perf_event: Add alignment-faults and emulation-faults software events)
Signed-off-by: David S. Miller <davem@davemloft.net>
---
arch/sparc/kernel/unaligned_32.c | 15 +++------------
arch/sparc/kernel/unaligned_64.c | 23 +++++++++--------------
arch/sparc/kernel/visemul.c | 3 +++
arch/sparc/math-emu/math_32.c | 3 +++
arch/sparc/math-emu/math_64.c | 2 ++
5 files changed, 20 insertions(+), 26 deletions(-)
diff --git a/arch/sparc/kernel/unaligned_32.c b/arch/sparc/kernel/unaligned_32.c
index 6b1e6cd..f8514e2 100644
--- a/arch/sparc/kernel/unaligned_32.c
+++ b/arch/sparc/kernel/unaligned_32.c
@@ -17,8 +17,7 @@
#include <asm/uaccess.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
-
-/* #define DEBUG_MNA */
+#include <linux/perf_event.h>
enum direction {
load, /* ld, ldd, ldh, ldsh */
@@ -29,12 +28,6 @@ enum direction {
invalid,
};
-#ifdef DEBUG_MNA
-static char *dirstrings[] = {
- "load", "store", "both", "fpload", "fpstore", "invalid"
-};
-#endif
-
static inline enum direction decode_direction(unsigned int insn)
{
unsigned long tmp = (insn >> 21) & 1;
@@ -255,10 +248,7 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
unsigned long addr = compute_effective_address(regs, insn);
int err;
-#ifdef DEBUG_MNA
- printk("KMNA: pc=%08lx [dir=%s addr=%08lx size=%d] retpc[%08lx]\n",
- regs->pc, dirstrings[dir], addr, size, regs->u_regs[UREG_RETPC]);
-#endif
+ perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, addr);
switch (dir) {
case load:
err = do_int_load(fetch_reg_addr(((insn>>25)&0x1f),
@@ -350,6 +340,7 @@ 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);
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 3792099..378ca82 100644
--- a/arch/sparc/kernel/unaligned_64.c
+++ b/arch/sparc/kernel/unaligned_64.c
@@ -20,10 +20,9 @@
#include <asm/uaccess.h>
#include <linux/smp.h>
#include <linux/bitops.h>
+#include <linux/perf_event.h>
#include <asm/fpumacro.h>
-/* #define DEBUG_MNA */
-
enum direction {
load, /* ld, ldd, ldh, ldsh */
store, /* st, std, sth, stsh */
@@ -33,12 +32,6 @@ enum direction {
invalid,
};
-#ifdef DEBUG_MNA
-static char *dirstrings[] = {
- "load", "store", "both", "fpload", "fpstore", "invalid"
-};
-#endif
-
static inline enum direction decode_direction(unsigned int insn)
{
unsigned long tmp = (insn >> 21) & 1;
@@ -327,12 +320,7 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
addr = compute_effective_address(regs, insn,
((insn >> 25) & 0x1f));
-#ifdef DEBUG_MNA
- printk("KMNA: pc=%016lx [dir=%s addr=%016lx size=%d] "
- "retpc[%016lx]\n",
- regs->tpc, dirstrings[dir], addr, size,
- regs->u_regs[UREG_RETPC]);
-#endif
+ perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, addr);
switch (asi) {
case ASI_NL:
case ASI_AIUPL:
@@ -399,6 +387,7 @@ 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);
if (insn & 0x2000) {
maybe_flush_windows(0, 0, rd, from_kernel);
value = sign_extend_imm13(insn);
@@ -445,6 +434,8 @@ 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);
+
save_and_clear_fpu();
current_thread_info()->xfsr[0] &= ~0x1c000;
if (freg & 3) {
@@ -566,6 +557,8 @@ 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);
+
maybe_flush_windows(0, 0, rd, from_kernel);
reg = fetch_reg_addr(rd, regs);
if (from_kernel || rd < 16) {
@@ -596,6 +589,7 @@ 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);
if (test_thread_flag(TIF_32BIT))
pc = (u32)pc;
if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
@@ -657,6 +651,7 @@ 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);
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 d231cbd..9dfd2eb 100644
--- a/arch/sparc/kernel/visemul.c
+++ b/arch/sparc/kernel/visemul.c
@@ -5,6 +5,7 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/thread_info.h>
+#include <linux/perf_event.h>
#include <asm/ptrace.h>
#include <asm/pstate.h>
@@ -801,6 +802,8 @@ 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);
+
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 e13f65d..a3fccde 100644
--- a/arch/sparc/math-emu/math_32.c
+++ b/arch/sparc/math-emu/math_32.c
@@ -67,6 +67,7 @@
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/mm.h>
+#include <linux/perf_event.h>
#include <asm/uaccess.h>
#include "sfp-util_32.h"
@@ -163,6 +164,8 @@ 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);
+
#ifdef DEBUG_MATHEMU
printk("In do_mathemu()... pc is %08lx\n", regs->pc);
printk("fpqdepth is %ld\n", fpt->thread.fpqdepth);
diff --git a/arch/sparc/math-emu/math_64.c b/arch/sparc/math-emu/math_64.c
index 6863c9b..56d2c44 100644
--- a/arch/sparc/math-emu/math_64.c
+++ b/arch/sparc/math-emu/math_64.c
@@ -11,6 +11,7 @@
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/errno.h>
+#include <linux/perf_event.h>
#include <asm/fpumacro.h>
#include <asm/ptrace.h>
@@ -183,6 +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);
if (test_thread_flag(TIF_32BIT))
pc = (u32)pc;
if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
--
1.6.5
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2009-12-12 6:55 [PATCH 7/10]: sparc: Add alignment and emulation fault perf events David Miller
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