mirror of https://github.com/dynup/kpatch
26 lines
894 B
Diff
26 lines
894 B
Diff
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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 2022-04-29 15:52:13.274335318 -0400
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+++ src/drivers/tty/n_tty.c 2022-04-29 15:53:04.777518603 -0400
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@@ -2253,7 +2253,7 @@ more_to_be_read:
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* 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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@@ -2340,6 +2340,12 @@ 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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