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| author | David S. Miller <davem@davemloft.net> | 2018-10-17 21:28:01 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-17 21:29:23 -0700 |
| commit | 776ca1543b5fe673aaf1beb244fcc2429d378083 (patch) | |
| tree | c40d5e40a9a3746b21520c2d57a45d0de01ed6fe | |
| parent | c343db455eb3105f11bb5ac290d77ab2006b0209 (diff) | |
| download | linux-stable-776ca1543b5fe673aaf1beb244fcc2429d378083.tar.gz linux-stable-776ca1543b5fe673aaf1beb244fcc2429d378083.tar.bz2 linux-stable-776ca1543b5fe673aaf1beb244fcc2429d378083.zip | |
sparc: Fix syscall fallback bugs in VDSO.
First, the trap number for 32-bit syscalls is 0x10.
Also, only negate the return value when syscall error is indicated by
the carry bit being set.
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | arch/sparc/vdso/vclock_gettime.c | 12 | ||||
| -rw-r--r-- | tools/perf/util/event.c | 5 |
2 files changed, 16 insertions, 1 deletions
diff --git a/arch/sparc/vdso/vclock_gettime.c b/arch/sparc/vdso/vclock_gettime.c index 3feb3d960ca5..75dca9aab737 100644 --- a/arch/sparc/vdso/vclock_gettime.c +++ b/arch/sparc/vdso/vclock_gettime.c @@ -33,9 +33,19 @@ #define TICK_PRIV_BIT (1ULL << 63) #endif +#ifdef CONFIG_SPARC64 #define SYSCALL_STRING \ "ta 0x6d;" \ - "sub %%g0, %%o0, %%o0;" \ + "bcs,a 1f;" \ + " sub %%g0, %%o0, %%o0;" \ + "1:" +#else +#define SYSCALL_STRING \ + "ta 0x10;" \ + "bcs,a 1f;" \ + " sub %%g0, %%o0, %%o0;" \ + "1:" +#endif #define SYSCALL_CLOBBERS \ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 0cd42150f712..651cd6f6762c 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -1081,6 +1081,7 @@ void *cpu_map_data__alloc(struct cpu_map *map, size_t *size, u16 *type, int *max } *size += sizeof(struct cpu_map_data); + *size = PERF_ALIGN(*size, sizeof(u64)); return zalloc(*size); } @@ -1560,7 +1561,9 @@ struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr, return NULL; } +#if 0 try_again: +#endif al->map = map_groups__find(mg, al->addr); if (al->map == NULL) { /* @@ -1572,6 +1575,7 @@ try_again: * "[vdso]" dso, but for now lets use the old trick of looking * in the whole kernel symbol list. */ +#if 0 if (cpumode == PERF_RECORD_MISC_USER && machine && mg != &machine->kmaps && machine__kernel_ip(machine, al->addr)) { @@ -1579,6 +1583,7 @@ try_again: load_map = true; goto try_again; } +#endif } else { /* * Kernel maps might be changed when loading symbols so loading |