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| author | Alexei Starovoitov <ast@fb.com> | 2016-02-18 06:58:57 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-02-20 08:21:44 +0300 |
| commit | 568b329a02f75ed3aaae5eb2cca384cb9e09cb29 (patch) | |
| tree | ae50fa4f98c1c7ad07ad834677be3304a282499e /kernel/events/internal.h | |
| parent | 6b83d28a55a891a9d70fc61ccb1c138e47dcbe74 (diff) | |
| download | linux-568b329a02f75ed3aaae5eb2cca384cb9e09cb29.tar.xz | |
perf: generalize perf_callchain
. avoid walking the stack when there is no room left in the buffer
. generalize get_perf_callchain() to be called from bpf helper
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/events/internal.h')
| -rw-r--r-- | kernel/events/internal.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/events/internal.h b/kernel/events/internal.h index 2bbad9c1274c..4199b6d193f5 100644 --- a/kernel/events/internal.h +++ b/kernel/events/internal.h @@ -182,8 +182,6 @@ DEFINE_OUTPUT_COPY(__output_copy_user, arch_perf_out_copy_user) /* Callchain handling */ extern struct perf_callchain_entry * perf_callchain(struct perf_event *event, struct pt_regs *regs); -extern int get_callchain_buffers(void); -extern void put_callchain_buffers(void); static inline int get_recursion_context(int *recursion) { |