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| author |   David Ahern <david.ahern@oracle.com> | 2015-06-15 16:15:46 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-06-25 06:01:03 -0700 |
| commit | 2d89cd8625c4af01a2683b18c3c8194cc3b3067c (patch) | |
| tree | 93d8f24e2555c4ffc0b559286d13a37b19020272 /arch/sparc/kernel | |
| parent | sparc64: perf: Add sanity checking on addresses in user stack (diff) | |
| download | linux-dev-2d89cd8625c4af01a2683b18c3c8194cc3b3067c.tar.xz linux-dev-2d89cd8625c4af01a2683b18c3c8194cc3b3067c.zip | |
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>
Diffstat (limited to 'arch/sparc/kernel')
| -rw-r--r-- | arch/sparc/kernel/perf_event.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c index a665e3f8c6c6..689db65f8529 100644 --- a/arch/sparc/kernel/perf_event.c +++ b/arch/sparc/kernel/perf_event.c @@ -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; |