ftrace: convert single large buffer into single pages.

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Allocating large buffers for the tracer may fail easily.
This patch converts the buffer from a large ordered allocation
to single pages. It uses the struct page LRU field to link the
pages together.

Later patches may also implement dynamic increasing and decreasing
of the trace buffers.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Steven Rostedt 2008-05-12 21:20:43 +02:00 • committed by Thomas Gleixner

parent 5072c59fd4

commit 4c11d7aed3

2 changed files with 195 additions and 58 deletions

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245

kernel/trace/trace.c

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8

kernel/trace/trace.h

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