Messages in this thread |  | | From | <> | Subject | [PATCH V5 0/3] perf/x86/amd: AMD Family 16h Data Breakpoint Extensions | Date | Wed, 2 Oct 2013 11:11:05 -0500 |
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From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Frederic, this is the rebase of the V4 patch onto the linux-3.12.0-rc3 (linux.git), and retest.
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
This will count writes to [0x1000 ~ 0x1010)
V5: * Rebase onto 3.12.0-rc3. * Modify the tools/perf/util/parse-events.y due to change in parse_events_add_breakpoint().
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 | 26 +++++++++++++-- 12 files changed, 142 insertions(+), 44 deletions(-)
-- 1.8.1.2
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