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| author | David S. Miller <davem@davemloft.net> | 2012-11-17 22:00:43 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-11-17 22:00:43 -0500 |
| commit | 67f4efdce7d85282fbd5832cddc80a07eb89b6d6 (patch) | |
| tree | 9a1771ef13b27abdf8cf172e5b7556ab93e5c48c /arch/sparc/kernel/perf_event.c | |
| parent | c53aa5058ad5ca8876a47d6639ad4d4f2c5ed584 (diff) | |
| parent | f4a75d2eb7b1e2206094b901be09adb31ba63681 (diff) | |
| download | linux-rt-67f4efdce7d85282fbd5832cddc80a07eb89b6d6.tar.gz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Minor line offset auto-merges.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/perf_event.c')
| -rw-r--r-- | arch/sparc/kernel/perf_event.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c index 885a8af74064..b5c38faa4ead 100644 --- a/arch/sparc/kernel/perf_event.c +++ b/arch/sparc/kernel/perf_event.c @@ -1762,15 +1762,25 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry, ufp = regs->u_regs[UREG_I6] & 0xffffffffUL; do { - struct sparc_stackf32 *usf, sf; unsigned long pc; - usf = (struct sparc_stackf32 *) ufp; - if (__copy_from_user_inatomic(&sf, usf, sizeof(sf))) - break; + if (thread32_stack_is_64bit(ufp)) { + struct sparc_stackf *usf, sf; - pc = sf.callers_pc; - ufp = (unsigned long)sf.fp; + ufp += STACK_BIAS; + usf = (struct sparc_stackf *) ufp; + if (__copy_from_user_inatomic(&sf, usf, sizeof(sf))) + break; + pc = sf.callers_pc & 0xffffffff; + ufp = ((unsigned long) sf.fp) & 0xffffffff; + } else { + struct sparc_stackf32 *usf, sf; + usf = (struct sparc_stackf32 *) ufp; + if (__copy_from_user_inatomic(&sf, usf, sizeof(sf))) + break; + pc = sf.callers_pc; + ufp = (unsigned long)sf.fp; + } perf_callchain_store(entry, pc); } while (entry->nr < PERF_MAX_STACK_DEPTH); } |