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https://github.com/dynup/kpatch
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30f09bfaa2
Add patches rebased on top of upstream 5.18.0. Integration tests for these can be ran as this: $ make PATCH_DIR="linux-5.18.0" KPATCH_BUILD_OPTS="--non-replace --sourcedir /path/to/src/linux-5.18.0" integration-slow Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
26 lines
945 B
Diff
26 lines
945 B
Diff
diff -Nupr src.orig/drivers/tty/n_tty.c src/drivers/tty/n_tty.c
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--- src.orig/drivers/tty/n_tty.c 2022-06-15 10:04:10.454915345 -0400
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+++ src/drivers/tty/n_tty.c 2022-06-15 10:04:59.142148413 -0400
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@@ -2213,7 +2213,7 @@ more_to_be_read:
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* (note that the process_output*() functions take this lock themselves)
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*/
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-static ssize_t n_tty_write(struct tty_struct *tty, struct file *file,
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+static ssize_t noinline kpatch_n_tty_write(struct tty_struct *tty, struct file *file,
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const unsigned char *buf, size_t nr)
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{
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const unsigned char *b = buf;
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@@ -2300,6 +2300,12 @@ break_out:
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return (b - buf) ? b - buf : retval;
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}
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+static ssize_t __attribute__((optimize("-fno-optimize-sibling-calls"))) n_tty_write(struct tty_struct *tty, struct file *file,
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+ const unsigned char *buf, size_t nr)
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+{
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+ return kpatch_n_tty_write(tty, file, buf, nr);
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+}
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+
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/**
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* n_tty_poll - poll method for N_TTY
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* @tty: terminal device
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