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sparc64: perf: Use UREG_FP rather than UREG_I6 

perf walks userspace callchains by following frame pointers. Use the
UREG_FP macro to make it clearer that the %fp is being used.

Signed-off-by: David Ahern <david.ahern@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2015-06-15 16:15:46 -04:00 committed by David S. Miller
parent b69fb7699c
commit 2d89cd8625
1 changed files with 2 additions and 2 deletions
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4
arch/sparc/kernel/perf_event.c
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@ -1756,7 +1756,7 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry,
{
unsigned long ufp;
ufp = regs->u_regs[UREG_I6] + STACK_BIAS;
ufp = regs->u_regs[UREG_FP] + STACK_BIAS;
do {
struct sparc_stackf __user *usf;
struct sparc_stackf sf;
@ -1780,7 +1780,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
{
unsigned long ufp;
ufp = regs->u_regs[UREG_I6] & 0xffffffffUL;
ufp = regs->u_regs[UREG_FP] & 0xffffffffUL;
do {
unsigned long pc;