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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-07-01 17:13:54 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-07-01 17:13:54 +0000 |
commit | 2957e9a7ea070524508a846205689431cb5c101f (patch) | |
tree | 42f079ff82e701ebcb76829974b4caca3e5b6798 /tools/perf/tests | |
parent | Adding upstream version 6.9.2. (diff) | |
download | linux-2957e9a7ea070524508a846205689431cb5c101f.tar.xz linux-2957e9a7ea070524508a846205689431cb5c101f.zip |
Adding upstream version 6.9.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/tests')
-rw-r--r-- | tools/perf/tests/builtin-test.c | 37 | ||||
-rw-r--r-- | tools/perf/tests/code-reading.c | 10 | ||||
-rwxr-xr-x | tools/perf/tests/shell/test_arm_coresight.sh | 2 | ||||
-rw-r--r-- | tools/perf/tests/workloads/datasym.c | 16 |
4 files changed, 28 insertions, 37 deletions
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index d13ee7683d..e05b370b1e 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -274,11 +274,8 @@ static int finish_test(struct child_test *child_test, int width) struct test_suite *t = child_test->test; int i = child_test->test_num; int subi = child_test->subtest; - int out = child_test->process.out; int err = child_test->process.err; - bool out_done = out <= 0; bool err_done = err <= 0; - struct strbuf out_output = STRBUF_INIT; struct strbuf err_output = STRBUF_INIT; int ret; @@ -290,11 +287,9 @@ static int finish_test(struct child_test *child_test, int width) pr_info("%3d: %-*s:\n", i + 1, width, test_description(t, -1)); /* - * Busy loop reading from the child's stdout and stderr that are set to - * be non-blocking until EOF. + * Busy loop reading from the child's stdout/stderr that are set to be + * non-blocking until EOF. */ - if (!out_done) - fcntl(out, F_SETFL, O_NONBLOCK); if (!err_done) fcntl(err, F_SETFL, O_NONBLOCK); if (verbose > 1) { @@ -303,11 +298,8 @@ static int finish_test(struct child_test *child_test, int width) else pr_info("%3d: %s:\n", i + 1, test_description(t, -1)); } - while (!out_done || !err_done) { - struct pollfd pfds[2] = { - { .fd = out, - .events = POLLIN | POLLERR | POLLHUP | POLLNVAL, - }, + while (!err_done) { + struct pollfd pfds[1] = { { .fd = err, .events = POLLIN | POLLERR | POLLHUP | POLLNVAL, }, @@ -317,21 +309,7 @@ static int finish_test(struct child_test *child_test, int width) /* Poll to avoid excessive spinning, timeout set for 1000ms. */ poll(pfds, ARRAY_SIZE(pfds), /*timeout=*/1000); - if (!out_done && pfds[0].revents) { - errno = 0; - len = read(out, buf, sizeof(buf) - 1); - - if (len <= 0) { - out_done = errno != EAGAIN; - } else { - buf[len] = '\0'; - if (verbose > 1) - fprintf(stdout, "%s", buf); - else - strbuf_addstr(&out_output, buf); - } - } - if (!err_done && pfds[1].revents) { + if (!err_done && pfds[0].revents) { errno = 0; len = read(err, buf, sizeof(buf) - 1); @@ -354,14 +332,10 @@ static int finish_test(struct child_test *child_test, int width) pr_info("%3d.%1d: %s:\n", i + 1, subi + 1, test_description(t, subi)); else pr_info("%3d: %s:\n", i + 1, test_description(t, -1)); - fprintf(stdout, "%s", out_output.buf); fprintf(stderr, "%s", err_output.buf); } - strbuf_release(&out_output); strbuf_release(&err_output); print_test_result(t, i, subi, ret, width); - if (out > 0) - close(out); if (err > 0) close(err); return 0; @@ -394,6 +368,7 @@ static int start_test(struct test_suite *test, int i, int subi, struct child_tes (*child)->process.no_stdout = 1; (*child)->process.no_stderr = 1; } else { + (*child)->process.stdout_to_stderr = 1; (*child)->process.out = -1; (*child)->process.err = -1; } diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c index 7a3a7bbbec..29d2f3ee4e 100644 --- a/tools/perf/tests/code-reading.c +++ b/tools/perf/tests/code-reading.c @@ -637,11 +637,11 @@ static int do_test_code_reading(bool try_kcore) evlist__config(evlist, &opts, NULL); - evsel = evlist__first(evlist); - - evsel->core.attr.comm = 1; - evsel->core.attr.disabled = 1; - evsel->core.attr.enable_on_exec = 0; + evlist__for_each_entry(evlist, evsel) { + evsel->core.attr.comm = 1; + evsel->core.attr.disabled = 1; + evsel->core.attr.enable_on_exec = 0; + } ret = evlist__open(evlist); if (ret < 0) { diff --git a/tools/perf/tests/shell/test_arm_coresight.sh b/tools/perf/tests/shell/test_arm_coresight.sh index 65dd852071..3302ea0b96 100755 --- a/tools/perf/tests/shell/test_arm_coresight.sh +++ b/tools/perf/tests/shell/test_arm_coresight.sh @@ -188,7 +188,7 @@ arm_cs_etm_snapshot_test() { arm_cs_etm_basic_test() { echo "Recording trace with '$*'" - perf record -o ${perfdata} "$@" -- ls > /dev/null 2>&1 + perf record -o ${perfdata} "$@" -m,8M -- ls > /dev/null 2>&1 perf_script_branch_samples ls && perf_report_branch_samples ls && diff --git a/tools/perf/tests/workloads/datasym.c b/tools/perf/tests/workloads/datasym.c index ddd40bc634..8e08fc75a9 100644 --- a/tools/perf/tests/workloads/datasym.c +++ b/tools/perf/tests/workloads/datasym.c @@ -16,6 +16,22 @@ static int datasym(int argc __maybe_unused, const char **argv __maybe_unused) { for (;;) { buf1.data1++; + if (buf1.data1 == 123) { + /* + * Add some 'noise' in the loop to work around errata + * 1694299 on Arm N1. + * + * Bias exists in SPE sampling which can cause the load + * and store instructions to be skipped entirely. This + * comes and goes randomly depending on the offset the + * linker places the datasym loop at in the Perf binary. + * With an extra branch in the middle of the loop that + * isn't always taken, the instruction stream is no + * longer a continuous repeating pattern that interacts + * badly with the bias. + */ + buf1.data1++; + } buf1.data2 += buf1.data1; } return 0; |