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author | Stephane Eranian <eranian@google.com> | 2014-09-24 13:48:40 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@kernel.org> | 2014-11-16 11:42:01 +0100 |
commit | 26ff0f0af79d0a9fc1f783d45e470059b840c7c1 (patch) | |
tree | 113ab21981a99bd22ade4a20ee576a3f6f9eeaee | |
parent | 6a21c0b5c2abd2fdfa6fff79f11df3d6082c1873 (diff) | |
download | op-kernel-dev-26ff0f0af79d0a9fc1f783d45e470059b840c7c1.zip op-kernel-dev-26ff0f0af79d0a9fc1f783d45e470059b840c7c1.tar.gz |
perf/tests: Add interrupted state sample parsing test
This patch updates the sample parsing test with support
for the sampling of machine interrupted state.
The patch modifies the do_test() code to sahred the sample
regts bitmask between user and intr regs.
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: cebbert.lkml@gmail.com
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Link: http://lkml.kernel.org/r/1411559322-16548-5-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r-- | tools/perf/tests/sample-parsing.c | 55 |
1 files changed, 40 insertions, 15 deletions
diff --git a/tools/perf/tests/sample-parsing.c b/tools/perf/tests/sample-parsing.c index ca292f9..4908c64 100644 --- a/tools/perf/tests/sample-parsing.c +++ b/tools/perf/tests/sample-parsing.c @@ -126,16 +126,28 @@ static bool samples_same(const struct perf_sample *s1, if (type & PERF_SAMPLE_TRANSACTION) COMP(transaction); + if (type & PERF_SAMPLE_REGS_INTR) { + size_t sz = hweight_long(s1->intr_regs.mask) * sizeof(u64); + + COMP(intr_regs.mask); + COMP(intr_regs.abi); + if (s1->intr_regs.abi && + (!s1->intr_regs.regs || !s2->intr_regs.regs || + memcmp(s1->intr_regs.regs, s2->intr_regs.regs, sz))) { + pr_debug("Samples differ at 'intr_regs'\n"); + return false; + } + } + return true; } -static int do_test(u64 sample_type, u64 sample_regs_user, u64 read_format) +static int do_test(u64 sample_type, u64 sample_regs, u64 read_format) { struct perf_evsel evsel = { .needs_swap = false, .attr = { .sample_type = sample_type, - .sample_regs_user = sample_regs_user, .read_format = read_format, }, }; @@ -154,7 +166,7 @@ static int do_test(u64 sample_type, u64 sample_regs_user, u64 read_format) /* 1 branch_entry */ .data = {1, 211, 212, 213}, }; - u64 user_regs[64]; + u64 regs[64]; const u64 raw_data[] = {0x123456780a0b0c0dULL, 0x1102030405060708ULL}; const u64 data[] = {0x2211443366558877ULL, 0, 0xaabbccddeeff4321ULL}; struct perf_sample sample = { @@ -176,8 +188,8 @@ static int do_test(u64 sample_type, u64 sample_regs_user, u64 read_format) .branch_stack = &branch_stack.branch_stack, .user_regs = { .abi = PERF_SAMPLE_REGS_ABI_64, - .mask = sample_regs_user, - .regs = user_regs, + .mask = sample_regs, + .regs = regs, }, .user_stack = { .size = sizeof(data), @@ -187,14 +199,25 @@ static int do_test(u64 sample_type, u64 sample_regs_user, u64 read_format) .time_enabled = 0x030a59d664fca7deULL, .time_running = 0x011b6ae553eb98edULL, }, + .intr_regs = { + .abi = PERF_SAMPLE_REGS_ABI_64, + .mask = sample_regs, + .regs = regs, + }, }; struct sample_read_value values[] = {{1, 5}, {9, 3}, {2, 7}, {6, 4},}; struct perf_sample sample_out; size_t i, sz, bufsz; int err, ret = -1; - for (i = 0; i < sizeof(user_regs); i++) - *(i + (u8 *)user_regs) = i & 0xfe; + if (sample_type & PERF_SAMPLE_REGS_USER) + evsel.attr.sample_regs_user = sample_regs; + + if (sample_type & PERF_SAMPLE_REGS_INTR) + evsel.attr.sample_regs_intr = sample_regs; + + for (i = 0; i < sizeof(regs); i++) + *(i + (u8 *)regs) = i & 0xfe; if (read_format & PERF_FORMAT_GROUP) { sample.read.group.nr = 4; @@ -271,7 +294,7 @@ int test__sample_parsing(void) { const u64 rf[] = {4, 5, 6, 7, 12, 13, 14, 15}; u64 sample_type; - u64 sample_regs_user; + u64 sample_regs; size_t i; int err; @@ -280,7 +303,7 @@ int test__sample_parsing(void) * were added. Please actually update the test rather than just change * the condition below. */ - if (PERF_SAMPLE_MAX > PERF_SAMPLE_TRANSACTION << 1) { + if (PERF_SAMPLE_MAX > PERF_SAMPLE_REGS_INTR << 1) { pr_debug("sample format has changed, some new PERF_SAMPLE_ bit was introduced - test needs updating\n"); return -1; } @@ -297,22 +320,24 @@ int test__sample_parsing(void) } continue; } + sample_regs = 0; if (sample_type == PERF_SAMPLE_REGS_USER) - sample_regs_user = 0x3fff; - else - sample_regs_user = 0; + sample_regs = 0x3fff; + + if (sample_type == PERF_SAMPLE_REGS_INTR) + sample_regs = 0xff0fff; - err = do_test(sample_type, sample_regs_user, 0); + err = do_test(sample_type, sample_regs, 0); if (err) return err; } /* Test all sample format bits together */ sample_type = PERF_SAMPLE_MAX - 1; - sample_regs_user = 0x3fff; + sample_regs = 0x3fff; /* shared yb intr and user regs */ for (i = 0; i < ARRAY_SIZE(rf); i++) { - err = do_test(sample_type, sample_regs_user, rf[i]); + err = do_test(sample_type, sample_regs, rf[i]); if (err) return err; } |