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Add support for built-in variable ustackdepth
Signed-off-by: Eugene Loh <eugene.loh@oracle.com> Reviewed-by: Kris Van Hees <kris.van.hees@oracle.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,215 @@ | ||
| /* | ||
| * Oracle Linux DTrace. | ||
| * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved. | ||
| * Licensed under the Universal Permissive License v 1.0 as shown at | ||
| * http://oss.oracle.com/licenses/upl. | ||
| */ | ||
|
|
||
| int mycallee(int i) { | ||
| return i ^ 1; | ||
| } | ||
|
|
||
| int myfunc_30() { | ||
| int i = 1; | ||
|
|
||
| /* call another function to prevent leaf call optimizations */ | ||
| i = mycallee(i); | ||
|
|
||
| /* endless loop, profile-n probe will fire here */ | ||
| while (i < 3) | ||
| i = 2 * i - 1; | ||
|
|
||
| return i; | ||
| } | ||
|
|
||
| /* have a very deep stack; ^1 prevents tail calls */ | ||
| int myfunc_2z() { return myfunc_30() ^ 1; } | ||
| int myfunc_2y() { return myfunc_2z() ^ 1; } | ||
| int myfunc_2x() { return myfunc_2y() ^ 1; } | ||
| int myfunc_2w() { return myfunc_2x() ^ 1; } | ||
| int myfunc_2v() { return myfunc_2w() ^ 1; } | ||
| int myfunc_2u() { return myfunc_2v() ^ 1; } | ||
| int myfunc_2t() { return myfunc_2u() ^ 1; } | ||
| int myfunc_2s() { return myfunc_2t() ^ 1; } | ||
| int myfunc_2r() { return myfunc_2s() ^ 1; } | ||
| int myfunc_2q() { return myfunc_2r() ^ 1; } | ||
| int myfunc_2p() { return myfunc_2q() ^ 1; } | ||
| int myfunc_2o() { return myfunc_2p() ^ 1; } | ||
| int myfunc_2n() { return myfunc_2o() ^ 1; } | ||
| int myfunc_2m() { return myfunc_2n() ^ 1; } | ||
| int myfunc_2l() { return myfunc_2m() ^ 1; } | ||
| int myfunc_2k() { return myfunc_2l() ^ 1; } | ||
| int myfunc_2j() { return myfunc_2k() ^ 1; } | ||
| int myfunc_2i() { return myfunc_2j() ^ 1; } | ||
| int myfunc_2h() { return myfunc_2i() ^ 1; } | ||
| int myfunc_2g() { return myfunc_2h() ^ 1; } | ||
| int myfunc_2f() { return myfunc_2g() ^ 1; } | ||
| int myfunc_2e() { return myfunc_2f() ^ 1; } | ||
| int myfunc_2d() { return myfunc_2e() ^ 1; } | ||
| int myfunc_2c() { return myfunc_2d() ^ 1; } | ||
| int myfunc_2b() { return myfunc_2c() ^ 1; } | ||
| int myfunc_2a() { return myfunc_2b() ^ 1; } | ||
| int myfunc_2Z() { return myfunc_2a() ^ 1; } | ||
| int myfunc_2Y() { return myfunc_2Z() ^ 1; } | ||
| int myfunc_2X() { return myfunc_2Y() ^ 1; } | ||
| int myfunc_2W() { return myfunc_2X() ^ 1; } | ||
| int myfunc_2V() { return myfunc_2W() ^ 1; } | ||
| int myfunc_2U() { return myfunc_2V() ^ 1; } | ||
| int myfunc_2T() { return myfunc_2U() ^ 1; } | ||
| int myfunc_2S() { return myfunc_2T() ^ 1; } | ||
| int myfunc_2R() { return myfunc_2S() ^ 1; } | ||
| int myfunc_2Q() { return myfunc_2R() ^ 1; } | ||
| int myfunc_2P() { return myfunc_2Q() ^ 1; } | ||
| int myfunc_2O() { return myfunc_2P() ^ 1; } | ||
| int myfunc_2N() { return myfunc_2O() ^ 1; } | ||
| int myfunc_2M() { return myfunc_2N() ^ 1; } | ||
| int myfunc_2L() { return myfunc_2M() ^ 1; } | ||
| int myfunc_2K() { return myfunc_2L() ^ 1; } | ||
| int myfunc_2J() { return myfunc_2K() ^ 1; } | ||
| int myfunc_2I() { return myfunc_2J() ^ 1; } | ||
| int myfunc_2H() { return myfunc_2I() ^ 1; } | ||
| int myfunc_2G() { return myfunc_2H() ^ 1; } | ||
| int myfunc_2F() { return myfunc_2G() ^ 1; } | ||
| int myfunc_2E() { return myfunc_2F() ^ 1; } | ||
| int myfunc_2D() { return myfunc_2E() ^ 1; } | ||
| int myfunc_2C() { return myfunc_2D() ^ 1; } | ||
| int myfunc_2B() { return myfunc_2C() ^ 1; } | ||
| int myfunc_2A() { return myfunc_2B() ^ 1; } | ||
| int myfunc_29() { return myfunc_2A() ^ 1; } | ||
| int myfunc_28() { return myfunc_29() ^ 1; } | ||
| int myfunc_27() { return myfunc_28() ^ 1; } | ||
| int myfunc_26() { return myfunc_27() ^ 1; } | ||
| int myfunc_25() { return myfunc_26() ^ 1; } | ||
| int myfunc_24() { return myfunc_25() ^ 1; } | ||
| int myfunc_23() { return myfunc_24() ^ 1; } | ||
| int myfunc_22() { return myfunc_23() ^ 1; } | ||
| int myfunc_21() { return myfunc_22() ^ 1; } | ||
| int myfunc_20() { return myfunc_21() ^ 1; } | ||
| int myfunc_1z() { return myfunc_20() ^ 1; } | ||
| int myfunc_1y() { return myfunc_1z() ^ 1; } | ||
| int myfunc_1x() { return myfunc_1y() ^ 1; } | ||
| int myfunc_1w() { return myfunc_1x() ^ 1; } | ||
| int myfunc_1v() { return myfunc_1w() ^ 1; } | ||
| int myfunc_1u() { return myfunc_1v() ^ 1; } | ||
| int myfunc_1t() { return myfunc_1u() ^ 1; } | ||
| int myfunc_1s() { return myfunc_1t() ^ 1; } | ||
| int myfunc_1r() { return myfunc_1s() ^ 1; } | ||
| int myfunc_1q() { return myfunc_1r() ^ 1; } | ||
| int myfunc_1p() { return myfunc_1q() ^ 1; } | ||
| int myfunc_1o() { return myfunc_1p() ^ 1; } | ||
| int myfunc_1n() { return myfunc_1o() ^ 1; } | ||
| int myfunc_1m() { return myfunc_1n() ^ 1; } | ||
| int myfunc_1l() { return myfunc_1m() ^ 1; } | ||
| int myfunc_1k() { return myfunc_1l() ^ 1; } | ||
| int myfunc_1j() { return myfunc_1k() ^ 1; } | ||
| int myfunc_1i() { return myfunc_1j() ^ 1; } | ||
| int myfunc_1h() { return myfunc_1i() ^ 1; } | ||
| int myfunc_1g() { return myfunc_1h() ^ 1; } | ||
| int myfunc_1f() { return myfunc_1g() ^ 1; } | ||
| int myfunc_1e() { return myfunc_1f() ^ 1; } | ||
| int myfunc_1d() { return myfunc_1e() ^ 1; } | ||
| int myfunc_1c() { return myfunc_1d() ^ 1; } | ||
| int myfunc_1b() { return myfunc_1c() ^ 1; } | ||
| int myfunc_1a() { return myfunc_1b() ^ 1; } | ||
| int myfunc_1Z() { return myfunc_1a() ^ 1; } | ||
| int myfunc_1Y() { return myfunc_1Z() ^ 1; } | ||
| int myfunc_1X() { return myfunc_1Y() ^ 1; } | ||
| int myfunc_1W() { return myfunc_1X() ^ 1; } | ||
| int myfunc_1V() { return myfunc_1W() ^ 1; } | ||
| int myfunc_1U() { return myfunc_1V() ^ 1; } | ||
| int myfunc_1T() { return myfunc_1U() ^ 1; } | ||
| int myfunc_1S() { return myfunc_1T() ^ 1; } | ||
| int myfunc_1R() { return myfunc_1S() ^ 1; } | ||
| int myfunc_1Q() { return myfunc_1R() ^ 1; } | ||
| int myfunc_1P() { return myfunc_1Q() ^ 1; } | ||
| int myfunc_1O() { return myfunc_1P() ^ 1; } | ||
| int myfunc_1N() { return myfunc_1O() ^ 1; } | ||
| int myfunc_1M() { return myfunc_1N() ^ 1; } | ||
| int myfunc_1L() { return myfunc_1M() ^ 1; } | ||
| int myfunc_1K() { return myfunc_1L() ^ 1; } | ||
| int myfunc_1J() { return myfunc_1K() ^ 1; } | ||
| int myfunc_1I() { return myfunc_1J() ^ 1; } | ||
| int myfunc_1H() { return myfunc_1I() ^ 1; } | ||
| int myfunc_1G() { return myfunc_1H() ^ 1; } | ||
| int myfunc_1F() { return myfunc_1G() ^ 1; } | ||
| int myfunc_1E() { return myfunc_1F() ^ 1; } | ||
| int myfunc_1D() { return myfunc_1E() ^ 1; } | ||
| int myfunc_1C() { return myfunc_1D() ^ 1; } | ||
| int myfunc_1B() { return myfunc_1C() ^ 1; } | ||
| int myfunc_1A() { return myfunc_1B() ^ 1; } | ||
| int myfunc_19() { return myfunc_1A() ^ 1; } | ||
| int myfunc_18() { return myfunc_19() ^ 1; } | ||
| int myfunc_17() { return myfunc_18() ^ 1; } | ||
| int myfunc_16() { return myfunc_17() ^ 1; } | ||
| int myfunc_15() { return myfunc_16() ^ 1; } | ||
| int myfunc_14() { return myfunc_15() ^ 1; } | ||
| int myfunc_13() { return myfunc_14() ^ 1; } | ||
| int myfunc_12() { return myfunc_13() ^ 1; } | ||
| int myfunc_11() { return myfunc_12() ^ 1; } | ||
| int myfunc_10() { return myfunc_11() ^ 1; } | ||
| int myfunc_0z() { return myfunc_10() ^ 1; } | ||
| int myfunc_0y() { return myfunc_0z() ^ 1; } | ||
| int myfunc_0x() { return myfunc_0y() ^ 1; } | ||
| int myfunc_0w() { return myfunc_0x() ^ 1; } | ||
| int myfunc_0v() { return myfunc_0w() ^ 1; } | ||
| int myfunc_0u() { return myfunc_0v() ^ 1; } | ||
| int myfunc_0t() { return myfunc_0u() ^ 1; } | ||
| int myfunc_0s() { return myfunc_0t() ^ 1; } | ||
| int myfunc_0r() { return myfunc_0s() ^ 1; } | ||
| int myfunc_0q() { return myfunc_0r() ^ 1; } | ||
| int myfunc_0p() { return myfunc_0q() ^ 1; } | ||
| int myfunc_0o() { return myfunc_0p() ^ 1; } | ||
| int myfunc_0n() { return myfunc_0o() ^ 1; } | ||
| int myfunc_0m() { return myfunc_0n() ^ 1; } | ||
| int myfunc_0l() { return myfunc_0m() ^ 1; } | ||
| int myfunc_0k() { return myfunc_0l() ^ 1; } | ||
| int myfunc_0j() { return myfunc_0k() ^ 1; } | ||
| int myfunc_0i() { return myfunc_0j() ^ 1; } | ||
| int myfunc_0h() { return myfunc_0i() ^ 1; } | ||
| int myfunc_0g() { return myfunc_0h() ^ 1; } | ||
| int myfunc_0f() { return myfunc_0g() ^ 1; } | ||
| int myfunc_0e() { return myfunc_0f() ^ 1; } | ||
| int myfunc_0d() { return myfunc_0e() ^ 1; } | ||
| int myfunc_0c() { return myfunc_0d() ^ 1; } | ||
| int myfunc_0b() { return myfunc_0c() ^ 1; } | ||
| int myfunc_0a() { return myfunc_0b() ^ 1; } | ||
| int myfunc_0Z() { return myfunc_0a() ^ 1; } | ||
| int myfunc_0Y() { return myfunc_0Z() ^ 1; } | ||
| int myfunc_0X() { return myfunc_0Y() ^ 1; } | ||
| int myfunc_0W() { return myfunc_0X() ^ 1; } | ||
| int myfunc_0V() { return myfunc_0W() ^ 1; } | ||
| int myfunc_0U() { return myfunc_0V() ^ 1; } | ||
| int myfunc_0T() { return myfunc_0U() ^ 1; } | ||
| int myfunc_0S() { return myfunc_0T() ^ 1; } | ||
| int myfunc_0R() { return myfunc_0S() ^ 1; } | ||
| int myfunc_0Q() { return myfunc_0R() ^ 1; } | ||
| int myfunc_0P() { return myfunc_0Q() ^ 1; } | ||
| int myfunc_0O() { return myfunc_0P() ^ 1; } | ||
| int myfunc_0N() { return myfunc_0O() ^ 1; } | ||
| int myfunc_0M() { return myfunc_0N() ^ 1; } | ||
| int myfunc_0L() { return myfunc_0M() ^ 1; } | ||
| int myfunc_0K() { return myfunc_0L() ^ 1; } | ||
| int myfunc_0J() { return myfunc_0K() ^ 1; } | ||
| int myfunc_0I() { return myfunc_0J() ^ 1; } | ||
| int myfunc_0H() { return myfunc_0I() ^ 1; } | ||
| int myfunc_0G() { return myfunc_0H() ^ 1; } | ||
| int myfunc_0F() { return myfunc_0G() ^ 1; } | ||
| int myfunc_0E() { return myfunc_0F() ^ 1; } | ||
| int myfunc_0D() { return myfunc_0E() ^ 1; } | ||
| int myfunc_0C() { return myfunc_0D() ^ 1; } | ||
| int myfunc_0B() { return myfunc_0C() ^ 1; } | ||
| int myfunc_0A() { return myfunc_0B() ^ 1; } | ||
| int myfunc_09() { return myfunc_0A() ^ 1; } | ||
| int myfunc_08() { return myfunc_09() ^ 1; } | ||
| int myfunc_07() { return myfunc_08() ^ 1; } | ||
| int myfunc_06() { return myfunc_07() ^ 1; } | ||
| int myfunc_05() { return myfunc_06() ^ 1; } | ||
| int myfunc_04() { return myfunc_05() ^ 1; } | ||
| int myfunc_03() { return myfunc_04() ^ 1; } | ||
| int myfunc_02() { return myfunc_03() ^ 1; } | ||
| int myfunc_01() { return myfunc_02() ^ 1; } | ||
| int myfunc_00() { return myfunc_01() ^ 1; } | ||
|
|
||
| int main(int c, char **v) { | ||
| return myfunc_00() ^ 1; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| /* | ||
| * Oracle Linux DTrace. | ||
| * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved. | ||
| * Licensed under the Universal Permissive License v 1.0 as shown at | ||
| * http://oss.oracle.com/licenses/upl. | ||
| */ | ||
|
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| /* @@trigger: ustack-tst-basic */ | ||
|
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| #pragma D option quiet | ||
|
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| /* | ||
| * ASSERTION: Verify ustackdepth against the ustack. | ||
| * | ||
| * SECTION: Variables/Built-in Variables | ||
| */ | ||
|
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| profile-1 | ||
| /pid == $target/ | ||
| { | ||
| printf("DEPTH %d\n", ustackdepth); | ||
| printf("TRACE BEGIN\n"); | ||
| ustack(); | ||
| printf("TRACE END\n"); | ||
| exit(0); | ||
| } | ||
|
|
||
| ERROR | ||
| { | ||
| exit(1); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| tst.stackdepth2.r |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| tst.stackdepth2.r.p |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| tst.ustackdepth2.r |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| tst.ustackdepth2.r.p |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| #!/bin/bash | ||
| # | ||
| # Oracle Linux DTrace. | ||
| # Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved. | ||
| # Licensed under the Universal Permissive License v 1.0 as shown at | ||
| # http://oss.oracle.com/licenses/upl. | ||
| # | ||
|
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| ## | ||
| # ASSERTION: ustackdepth works for larger than default perf_event_max_stack. | ||
| # | ||
| # SECTION: Variables/Built-in Variables/ustackdepth | ||
| ## | ||
|
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| dtrace=$1 | ||
|
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| orig_maxstack=`sysctl -n kernel.perf_event_max_stack` | ||
| echo kernel.perf_event_max_stack was $orig_maxstack | ||
| sysctl kernel.perf_event_max_stack=200 | ||
|
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| $dtrace $dt_flags -c test/triggers/ustack-tst-bigstack-spin -qn ' | ||
| profile-1 | ||
| /pid == $target/ | ||
| { | ||
| printf("DEPTH %d\n", ustackdepth); | ||
| printf("TRACE BEGIN\n"); | ||
| ustack(200); | ||
| printf("TRACE END\n"); | ||
| exit(0); | ||
| } | ||
| ERROR | ||
| { | ||
| exit(1); | ||
| } | ||
| ' | ||
| if [ $? -ne 0 ]; then | ||
| echo DTrace failure | ||
| exit 1 | ||
| fi | ||
|
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| sleep 2 | ||
| sysctl kernel.perf_event_max_stack=$orig_maxstack | ||
|
|
||
| exit 0 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| /* | ||
| * Oracle Linux DTrace. | ||
| * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved. | ||
| * Licensed under the Universal Permissive License v 1.0 as shown at | ||
| * http://oss.oracle.com/licenses/upl. | ||
| */ | ||
|
|
||
| /* @@trigger: ustack-tst-basic */ | ||
|
|
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| #pragma D option quiet | ||
| #pragma D option maxframes=5 | ||
|
|
||
| /* | ||
| * ASSERTION: Verify ustackdepth is limited by option "maxframes". | ||
| * | ||
| * SECTION: Variables/Built-in Variables | ||
| */ | ||
|
|
||
| profile-1 | ||
| /pid == $target/ | ||
| { | ||
| printf("DEPTH %d\n", ustackdepth); | ||
| exit(0); | ||
| } | ||
|
|
||
| ERROR | ||
| { | ||
| exit(1); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| DEPTH 5 | ||
|
|