diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2016-10-07 16:42:25 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-10-24 10:31:32 -0300 |
| commit | 32f98aab75dd385e326c975717f8b730c6c57508 (patch) | |
| tree | 08f9357a1e5ee223e2c2e760ec2a397b1324b92e /tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c | |
| parent | e9c848928abf4cb60601e9ae7d336f0333c98bca (diff) | |
perf intel-pt/bts: Tidy instruction buffer size usage
Tidy instruction buffer size usage in preparation for copying the
instruction bytes onto samples.
The instruction buffer is presently used for debugging, so rename its
size macro from INTEL_PT_INSN_DBG_BUF_SZ to INTEL_PT_INSN_BUF_SZ, and
use it everywhere.
Note that the maximum instruction size is 15 which is a less efficient size
to copy than 16, which is why a separate buffer size is used.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1475847747-30994-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c')
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c index d23138c06665..5f95cd442075 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c @@ -27,6 +27,10 @@ #include "intel-pt-insn-decoder.h" +#if INTEL_PT_INSN_BUF_SZ < MAX_INSN_SIZE +#error Instruction buffer size too small +#endif + /* Based on branch_type() from perf_event_intel_lbr.c */ static void intel_pt_insn_decoder(struct insn *insn, struct intel_pt_insn *intel_pt_insn) @@ -166,10 +170,10 @@ int intel_pt_get_insn(const unsigned char *buf, size_t len, int x86_64, if (!insn_complete(&insn) || insn.length > len) return -1; intel_pt_insn_decoder(&insn, intel_pt_insn); - if (insn.length < INTEL_PT_INSN_DBG_BUF_SZ) + if (insn.length < INTEL_PT_INSN_BUF_SZ) memcpy(intel_pt_insn->buf, buf, insn.length); else - memcpy(intel_pt_insn->buf, buf, INTEL_PT_INSN_DBG_BUF_SZ); + memcpy(intel_pt_insn->buf, buf, INTEL_PT_INSN_BUF_SZ); return 0; } @@ -211,11 +215,6 @@ int intel_pt_insn_desc(const struct intel_pt_insn *intel_pt_insn, char *buf, return 0; } -size_t intel_pt_insn_max_size(void) -{ - return MAX_INSN_SIZE; -} - int intel_pt_insn_type(enum intel_pt_insn_op op) { switch (op) { |