From: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com> Signed-off-by: Jacob Shin <jacob.s...@amd.com> --- tools/perf/Documentation/perf-record.txt | 14 ++++++++++---- tools/perf/util/parse-events.c | 2 +- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index d4da111..48a7587 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -33,13 +33,19 @@ OPTIONS - a raw PMU event (eventsel+umask) in the form of rNNN where NNN is a hexadecimal event descriptor. - - a hardware breakpoint event in the form of '\mem:addr[:access]' - where addr is the address in memory you want to break in. - Access is the memory access type (read, write, execute) it can - be passed as follows: '\mem:addr[:[r][w][x]]'. + - a hardware breakpoint event in the form of + '\mem:addr[:access][:addr_mask]' where addr is the address in + memory you want to break in. Access is the memory access type (read, + write, execute) it can be passed as follows: '\mem:addr[:[r][w][x]]'. + addr_mask is the "don't care" bit mask to further qualify the given + addr, to break in on accesses to an address range. + If you want to profile read-write accesses in 0x1000, just set 'mem:0x1000:rw'. + If you want to profile write accesses in [0x1000 ~ 0x1010), just set + 'mem:0x1000:w:0xf'. (Only supported on some hardware) + --filter=<filter>:: Event filter. diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 0744895..93d0c9c 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -1148,7 +1148,7 @@ void print_events(const char *event_glob, bool name_only) printf("\n"); printf(" %-50s [%s]\n", - "mem:<addr>[:access]", + "mem:<addr>[:access][:addr_mask]", event_type_descriptors[PERF_TYPE_BREAKPOINT]); printf("\n"); } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/