Messages in this thread | | | From | Jacob Shin <> | Subject | [PATCH V4 0/3] perf/x86/amd: AMD Family 16h Data Breakpoint Extensions | Date | Sun, 28 Apr 2013 01:05:49 -0500 |
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Oleg, Ingo, this is my final push for 3.10. I understand that it might be too late for that .. if so I'll try again later for 3.11.
The following patchset enables hardware breakpoint bp_len greater than HW_BREAKPOINT_LEN_8 on AMD Family 16h and later.
$ perf stat -e mem:0x1000/16:w a.out ^^ bp_len
Will count writes to [0x1000 ~ 0x1010)
V4: Even more per Oleg's suggestion: * Further simplify info->len and info->mask setting switch statement
V3: More per Oleg's suggestion: * Use already existing bp_len instead of changing userland API and in kernel turn bp_len into proper AMD hardware breakpoint address mask.
V2: Per Oleg's suggestions: * Moved testing of bp_addr_mask to validate_hw_breakpoint() * Changed perf tool syntax to mem:<addr>[/addr_mask][:access]
Jacob Shin (3): perf/x86/amd: AMD support for bp_len > HW_BREAKPOINT_LEN_8 perf tools: allow user to specify hardware breakpoint bp_len perf tools: add hardware breakpoint bp_len test cases
arch/x86/include/asm/cpufeature.h | 2 ++ arch/x86/include/asm/debugreg.h | 5 +++ arch/x86/include/asm/hw_breakpoint.h | 1 + arch/x86/include/uapi/asm/msr-index.h | 4 +++ arch/x86/kernel/cpu/amd.c | 19 +++++++++++ arch/x86/kernel/hw_breakpoint.c | 47 ++++++++++--------------- tools/perf/Documentation/perf-record.txt | 7 ++-- tools/perf/tests/parse-events.c | 55 ++++++++++++++++++++++++++++++ tools/perf/util/parse-events.c | 17 ++++----- tools/perf/util/parse-events.h | 2 +- tools/perf/util/parse-events.l | 1 + tools/perf/util/parse-events.y | 24 +++++++++++-- 12 files changed, 140 insertions(+), 44 deletions(-)
-- 1.7.9.5
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