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authorSteven Rostedt <rostedt@goodmis.org>2008-10-16 09:31:27 -0400
committerIngo Molnar <mingo@elte.hu>2008-10-20 18:27:01 +0200
commitbd95b88d9e51fcbf392a7e90338a8fcc3499cbd6 (patch)
treea88df2bd756a4dd0715a92c3cec193366d86b861 /arch/sparc64/lib/mcount.S
parentc513867561eeb07d24a0bdda1a18a8f91921a301 (diff)
ftrace: release functions from hash
The x86 architecture uses a static recording of mcount caller locations and is not affected by this patch. For architectures still using the dynamic ftrace daemon, this patch is critical. It removes the race between the recording of a function that calls mcount, the unloading of a module, and the ftrace daemon updating the call sites. This patch adds the releasing of the hash functions that the daemon uses to update the mcount call sites. When a module is unloaded, not only are the replaced call site table update, but now so is the hash recorded functions that the ftrace daemon will use. Again, architectures that implement MCOUNT_RECORD are not affected by this (which currently only x86 has). Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/sparc64/lib/mcount.S')
0 files changed, 0 insertions, 0 deletions