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From ff22437ef4310a2ab37d732bdd1496a926315691 Mon Sep 17 00:00:00 2001
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From: Viktor Malik <viktor.malik@gmail.com>
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Date: Mon, 17 Jan 2022 11:15:26 +0100
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Subject: [PATCH 5/6] Update bio* tools to work on kernel 5.16+
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Kernel 5.16 contains commit:
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https://github.com/torvalds/linux/commit/be6bfe36db1795babe9d92178a47b2e02193cb0f
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which renamed some of the functions that the bio* tools attach to.
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---
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tools/biolatency.bt | 6 ++++--
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tools/biosnoop.bt | 6 ++++--
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tools/biostacks.bt | 3 ++-
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3 files changed, 10 insertions(+), 5 deletions(-)
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diff --git a/tools/biolatency.bt b/tools/biolatency.bt
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index 4ea910b4..d5af1f29 100755
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--- a/tools/biolatency.bt
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+++ b/tools/biolatency.bt
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@@ -16,12 +16,14 @@ BEGIN
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printf("Tracing block device I/O... Hit Ctrl-C to end.\n");
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}
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-kprobe:blk_account_io_start
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+kprobe:blk_account_io_start,
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+kprobe:__blk_account_io_start
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{
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@start[arg0] = nsecs;
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}
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-kprobe:blk_account_io_done
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+kprobe:blk_account_io_done,
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+kprobe:__blk_account_io_done
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/@start[arg0]/
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{
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@usecs = hist((nsecs - @start[arg0]) / 1000);
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diff --git a/tools/biosnoop.bt b/tools/biosnoop.bt
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index 38ffeb52..aa88f4ba 100755
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--- a/tools/biosnoop.bt
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+++ b/tools/biosnoop.bt
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@@ -16,7 +16,8 @@ BEGIN
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printf("%-12s %-7s %-16s %-6s %7s\n", "TIME(ms)", "DISK", "COMM", "PID", "LAT(ms)");
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}
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-kprobe:blk_account_io_start
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+kprobe:blk_account_io_start,
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+kprobe:__blk_account_io_start
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{
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@start[arg0] = nsecs;
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@iopid[arg0] = pid;
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@@ -24,7 +25,8 @@ kprobe:blk_account_io_start
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@disk[arg0] = ((struct request *)arg0)->rq_disk->disk_name;
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}
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-kprobe:blk_account_io_done
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+kprobe:blk_account_io_done,
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+kprobe:__blk_account_io_done
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/@start[arg0] != 0 && @iopid[arg0] != 0 && @iocomm[arg0] != ""/
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{
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diff --git a/tools/biostacks.bt b/tools/biostacks.bt
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index 58201cdf..1bc9f819 100755
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--- a/tools/biostacks.bt
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+++ b/tools/biostacks.bt
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@@ -18,7 +18,8 @@ BEGIN
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printf("Tracing block I/O with init stacks. Hit Ctrl-C to end.\n");
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}
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-kprobe:blk_account_io_start
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+kprobe:blk_account_io_start,
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+kprobe:__blk_account_io_start
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{
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@reqstack[arg0] = kstack;
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@reqts[arg0] = nsecs;
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--
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2.35.3
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