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Merge remote-tracking branch 'acme/perf/urgent' into perf/core

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To pick up fixes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2018-09-18 17:20:41 -03:00
parent 49e73246cb 169e366c08
commit 7f16023bfc
19 changed files with 177 additions and 16 deletions
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4
kernel/events/core.c
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@@ -5943,6 +5943,7 @@ perf_output_sample_ustack(struct perf_output_handle *handle, u64 dump_size,
unsigned long sp;
unsigned int rem;
u64 dyn_size;
mm_segment_t fs;
/*
* We dump:
@@ -5960,7 +5961,10 @@ perf_output_sample_ustack(struct perf_output_handle *handle, u64 dump_size,
/* Data. */
sp = perf_user_stack_pointer(regs);
fs = get_fs();
set_fs(USER_DS);
rem = __output_copy_user(handle, (void *) sp, dump_size);
set_fs(fs);
dyn_size = dump_size - rem;
perf_output_skip(handle, rem);